Toro 09715 Service Manual

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Form No. 07155SL Rev A

ProCore® 864/1298

Original Instructions (EN)

Revision History

Revision

Date

Description

2007

02/2018

Added revision history.

reproduced by a third party without the express written consent of The Toro Company (and/or the appropriate affiliated company).

Initial Issue.

THE TORO COMPANY 2018

This document and all information contained herein is the sole property of The Toro Company (and/or its affiliated companies). No intellectual property rights are granted by the delivery of this document or the disclosure of its content. This document shall not be

Reader Comments

The Toro Company Technical Assistance Center maintains a continuous effort to improve the quality and usefulness of its publications. To do this effectively, we encourage user feedback. Please comment on the completeness, accuracy, organization, usability, and readability of this manual by an e-mail to servicemanuals@toro.com

or Mail to: Technical Publication Manager, Commercial

The Toro Company 8111 Lyndale Avenue South Bloomington, MN 55420-1196 Phone: +1 952-887-8495

NOTES _

Preface

The purpose of this publication is to provide the service technician with information for troubleshooting, testing and repair of major systems and components on the ProCore 864 and 1298 aerators.

REFER TO THE OPERATOR’S MANUALS FOR OPERATING, MAINTENANCE AND ADJUSTMENT INSTRUCTIONS. Space is provided in Chapter 2 of this book to insert the Operator’s Manuals and Parts Catalogs for your machine. Replacement Operator’s Manuals are available on the internet at www.toro.com or by sending complete Model and Serial Number to:

The Toro Company Attn. Technical Publications 8111 Lyndale Avenue South Minneapolis, MN 55420

The Toro Company reserves the right to change product specifications or this publication without notice.

Part No. 07155SL (Rev. A)

Service Manual

ProCoreR 864/1298

This safety symbol means DANGER, WARNING, or CAUTION, PERSONAL SAFETY INSTRUCTION. When you see this symbol, carefully read the instructions that follow. Failure to obey the instructions may result in personal injury.

NOTE: A NOTE will give general information about the

correct operation, maintenance, service, testing or repair of the machine.

IMPORTANT: The IMPORTANT notice will give important instructions which must be followed to prevent damage to systems or components on the machine.

E The Toro Company − 2007, 2018

This page is intentionally blank.

ProCore 864/1298

Chapter 1 − Safety

Safety Instructions 1 − 2. . . . . . . . . . . . . . . . . . . . . . . . . .

Safety and Instruction Decals 1 − 4. . . . . . . . . . . . . . . .

Chapter 2 − Product Records and Maintenance

Product Records 2 − 1. . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 2 − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equivalents and Conversions 2 − 2. . . . . . . . . . . . . . . .

Torque Specifications 2 − 3. . . . . . . . . . . . . . . . . . . . . . .

Chapter 3 − Chassis

Service and Repairs 3 − 2. . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4 − Coring Head

Specifications 4 − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information 4 − 4. . . . . . . . . . . . . . . . . . . . . . . .

Special Tools 4 − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service and Repairs 4 − 10. . . . . . . . . . . . . . . . . . . . . . .

SafetyProduct Records

and Maintenance

ChassisCoring Head

ProCore 864/1298

This page is intentionally blank.

ProCore 864/1298

Chapter 1

Safety

Table of Contents

SAFETY INSTRUCTIONS 2. . . . . . . . . . . . . . . . . . . . . .

Before Operating 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

While Operating 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance and Service 3. . . . . . . . . . . . . . . . . . . .

SAFETY AND INSTRUCTION DECALS 4. . . . . . . . . .

Safety

ProCore 864/1298 Page 1 − 1 Safety

Safety Instructions

The ProCore 864 and 1298 are designed and tested to offer safe service when operated and maintained properly. Although hazard control and accident prevention partially are dependent upon the design and configuration of the machine, these factors are also dependent upon the awareness, concern and proper training of the personnel involved in the operation, transport, maintenance and storage of the machine. Improper use or maintenance of the machine can result in injury or death. To reduce the potential for injury or death, comply with the following safety instructions.

Before Operating

WARNING

To reduce the potential for injury or death, comply with the following safety instructions.

1. Read and un d e r s t a n d t h e c o ntents of the Operator’s Manual before starting and operating the aerator. Become familiar with the controls and know how to stop the machine quickly. A replacement Operator’s Manual is available on the Internet at www.Toro.com or by sending the complete model and serial number to:

The Toro Company Attn. Technical Publications 8111 Lyndale Avenue South Bloomington, Minnesota 55420−1196

2. Keep all shields, safety devices and decals in place. If a shield, safety device or decal is defective, illegible or damaged, repair or replace it before operating the machine.

3. Make sure that the tractor is carefully selected to assure the best performance and safe operation of the ProCore aerator.

4. Make sure that operator is familiar with safe tractor operation.

5. Tighten any loose nuts, bolts or screws to ensure machine is in safe operating condition.

6. Make sure that the ProCore aerator is properly attached to tractor.

ProCore 864/1298Page 1 − 2Safety

While Operating

1. Operator should be on the tractor when starting the engine and when operating the aerator. Stay away from the aerator coring head when it is engaged.

2. Before starting the engine on the tractor: A. Apply the parking brake. B. Make sure traction lever or transmission is in neu-

tral and PTO is disengaged. C. Refer t o Tractor Operator’s Manual for safe start-

ing procedures.

3. Do not run tractor engine in a confined area without

adequate ventilation. Exhaust fumes are hazardous and could possibly be deadly.

4. If abnormal vibration is detected, disengage PTO

and stop tractor immediately. Determine source of vibration and correct problem(s) before resuming the use of aerator.

5. While operating, the combination of the tractor and the ProCore aerator may exceed noise levels of 85dB(A) at the operator position. Hearing protection is recommended for prolonged exposure to reduce the potential of permanent hearing damage.

IMPORTANT: Never operate aerator without tine heads installed.

IMPORTANT: Never operate the tractor PTO in excess of 540 RPM or damage to the aerator could occur.

6. Before leaving the operator’s position of the tractor: A. Disengage PTO power to aerator and lower aera-

tor to the ground. B. Apply parking brake on tractor. Stop engine and

remove key from ignition switch. C. Wait for all moving parts to stop before leaving

the tractor.

Safety

Maintenance and Service

1. Before servicing or making adjustments to aerator, disengage tractor PTO, position aerator on a level surface and lower aerator to the ground. Apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Make sure machine is in safe operating condition by keeping all nuts, bolts and screws tight.

3. Use care when checking or servicing the coring head: wear gloves and use caution.

4. Never step over the PTO shaft to reach other side o f aerator. Walk around the machine instead.

5. Before disconnecting aerator from tractor, install storage stand to aerator hitch frame and park aerator on a hard, level surface.

6. After servicing the aerator, be sure that all guards

and covers are properly installed and that the rear hood is secured shut.

7. At the time of manufacture, the machine conformed

to all applicable safety standards. To assure optimum performance and continued safety certification of the machine, use genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers may result in non-conformance with the safety standards, and the warranty may be voided.

8. If major repairs are ever needed or assistance is de-

sired, contact an Authorized Toro Distributor.

ProCore 864/1298 Page 1 − 3 Safety

Safety and Instruction Decals

Numerous safety and instruction decals are affixed to the ProCore 864 and 1298. If any decal becomes illegible or damaged, install a new decal. Part numbers for replacement decals are listed in your Parts Catalog. Order replacement decals from your Authorized Toro Distributor.

ProCore 864/1298Page 1 − 4Safety

Product Records and Maintenance

Table of Contents

PRODUCT RECORDS 1. . . . . . . . . . . . . . . . . . . . . . . . .

MAINTENANCE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EQUIVALENTS AND CONVERSIONS 2. . . . . . . . . . .

Decimal and Millimeter Equivalents 2. . . . . . . . . . . .

U.S. to Metric Conversions 2. . . . . . . . . . . . . . . . . . .

TORQUE SPECIFICATIONS 3. . . . . . . . . . . . . . . . . . .

Fastener Identification 3. . . . . . . . . . . . . . . . . . . . . . .

Standard Torque for Dry, Zinc Plated and

Steel Fasteners (Inch Series) 4. . . . . . . . . . . . . . .

Standard Torque for Dry, Zinc Plated and

Steel Fasteners (Metric Fasteners) 5. . . . . . . . . .

Other Torque Specifications 6. . . . . . . . . . . . . . . . . .

Conversion Factors 6. . . . . . . . . . . . . . . . . . . . . . . . .

Product Records

Chapter 2

Product Records

and Maintenance

Insert Operator’s Manual and Parts Catalog for your ProCore 864 or 1298 at the end of this chapter . Additionally , i f any optional equipment or accessories have been installed to your ProCore, insert the Installation Instructions, Operator’s Manuals and Parts Catalogs for those options at the end of this chapter.

Maintenance

Maintenance procedures and recommended service intervals for the ProCore 864 or 1298 are covered in the Operator’s Manual. Refer to that publication when performing regular equipment maintenance.

ProCore 864/1298 Page 2 − 1 Product Records and Maintenance

Equivalents and Conversions

0.09375

ProCore 864/1298Page 2 − 2Product Records and Maintenance

Torque Specifications

Recommended fastener torque values are listed in the following tables. For critical applications, as determined by Toro, either the recommended torque or a torque that is unique to the application is clearly identified and specified in this Service Manual.

These Torque Specifications for the installation and tightening of fasteners shall apply to all fasteners which do not have a specific requirement identified in this Service Manual. The following factors shall be considered when applying torque: cleanliness of the fastener, use of a thread sealant (e.g. Loctite), degree of lubrication on the fastener, presence of a prevailing torque feature, hardness of the surface underneath the fastener’s head or similar condition which affects the installation.

Fastener Identification

As noted in the following tables, torque values should be reduced by 25% for lubricated fasteners to achieve the similar stress as a dry fastener. Torque values may also have to be reduced when the fastener is threaded into aluminum or brass. The specific torque value should be determined based on the aluminum or brass material strength, fastener size, length of thread engagement, etc.

The standard method of verifying torque shall be performed by marking a line on the fastener (head or nut) and mating part, then back off fastener 1/4 of a turn. Measure the torque required to tighten the fastener until the lines match up.

Product Records

and Maintenance

Grade 1 Grade 5 Grade 8

Inch Series Bolts and Screws

Figure 1

Class 8.8 Class 10.9

Metric Bolts and Screws

Figure 2

ProCore 864/1298 Page 2 − 3 Product Records and Maintenance

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)

10 + 2

13 + 2

147 + 23

13 + 2

25 + 5

282 + 30

18 + 2

30 + 5

339 + 56

Grade 1, 5 &

Thread Size

# 6 − 32 UNC

# 6 − 40 UNF

# 8 − 32 UNC

# 8 − 36 UNF

# 10 − 24 UNC

# 10 − 32 UNF

1/4 − 20 UNC 48 + 7 53 + 7 599 + 79 100 + 10 1125 + 100 140 + 15 1580 + 170

1/4 − 28 UNF 53 + 7 65 + 10 734 + 113 115 + 10 1300 + 100 160 + 15 1800 + 170

5/16 − 18 UNC 115 + 15 105 + 17 1186 + 169 200 + 25 2250 + 280 300 + 30 3390 + 340

5/16 − 24 UNF 138 + 17 128 + 17 1446 + 192 225 + 25 2540 + 280 325 + 30 3670 + 340

3/8 − 16 UNC 16 + 2 16 + 2 22 + 3 30 + 3 41 + 4 43 + 4 58 + 5

8 with Thin

Height Nuts

in−lb in−lb N−cm in−lb N−cm in−lb N−cm

ft−lb ft−lb N−m ft−lb N−m ft−lb N−m

SAE Grade 1 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 2 or Stronger Nuts)

SAE Grade 5 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 2 or Stronger Nuts)

15 + 2 170 + 20 23 + 2 260 + 20

17 + 2 190 + 20 25 + 2 280 + 20

29 + 3 330 + 30 41 + 4 460 + 45

31 + 3 350 + 30 43 + 4 485 + 45

42 + 4 475 + 45 60 + 6 675 + 70

48 + 4 540 + 45 68 + 6 765 + 70

SAE Grade 8 Bolts, Screws, Studs &

Sems with Regular Height Nuts

(SAE J995 Grade 5 or Stronger Nuts)

3/8 − 24 UNF 17 + 2 18 + 2 24 + 3 35 + 3 47 + 4 50 + 4 68 + 5

7/16 − 14 UNC 27 + 3 27 + 3 37 + 4 50 + 5 68 + 7 70 + 7 95 + 9

7/16 − 20 UNF 29 + 3 29 + 3 39 + 4 55 + 5 75 + 7 77 + 7 104 + 9

1/2 − 13 UNC 30 + 3 48 + 7 65 + 9 75 + 8 102 + 11 105 + 10 142 + 14

1/2 − 20 UNF 32 + 3 53 + 7 72 + 9 85 + 8 115 + 11 120 + 10 163 + 14

5/8 − 11 UNC 65 + 10 88 + 12 119 + 16 150 + 15 203 + 20 210 + 20 285 + 27

5/8 − 18 UNF 75 + 10 95 + 15 129 + 20 170 + 15 230 + 20 240 + 20 325 + 27

3/4 − 10 UNC 93 + 12 140 + 20 190 + 27 265 + 25 359 + 34 375 + 35 508 + 47

3/4 − 16 UNF 115 + 15 165 + 25 224 + 34 300 + 25 407 + 34 420 + 35 569 + 47

7/8 − 9 UNC 140 + 20 225 + 25 305 + 34 430 + 45 583 + 61 600 + 60 813 + 81

7/8 − 14 UNF 155 + 25 260 + 30 353 + 41 475 + 45 644 + 61 660 + 60 895 + 81

NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated fasteners are defined as threads coated with a lubricant such as oil, graphite or thread sealant such as Loctite.

NOTE: The nominal torque values listed above for Grade 5 and 8 fasteners are based on 75% of the minimum proof load specified in SAE J429. The tolerance is approximately +

10% of the nominal torque value. Thin

height nuts include jam nuts.

NOTE: Torque values may have to be reduced when installing fasteners into threaded aluminum or brass. The specific torque value should be determined based on the fastener size, the aluminum or base material strength, length of thread engagement, etc.

ProCore 864/1298Page 2 − 4Product Records and Maintenance

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Fasteners)

Thread Size

Regular Height Nuts

Class 8.8 Bolts, Screws and Studs with

(Class 8 or Stronger Nuts)

M5 X 0.8 57 + 5 in−lb 640 + 60 N−cm 78 + 7 in−lb 885 + 80 N−cm

M6 X 1.0 96 + 9 in−lb 1018 + 100 N−cm 133 + 13 in−lb 1500 + 150 N−cm M8 X 1.25 19 + 2 ft−lb 26 + 3 N−m 27 + 2 ft−lb 36 + 3 N−m M10 X 1.5 38 + 4 ft−lb 52 + 5 N−m 53 + 5 ft−lb 72 + 7 N−m

M12 X 1.75 66 + 7 ft−lb 90 + 10 N−m 92 + 9 ft−lb 125 + 12 N−m

M16 X 2.0 166 + 15 ft−lb 225 + 20 N−m 229 + 22 ft−lb 310 + 30 N−m M20 X 2.5 325 + 33 ft−lb 440 + 45 N−m 450 + 37 ft−lb 610 + 50 N−m

NOTE: The nominal torque values listed above are based on 75% of the minimum proof load specified in SAE J1199. The tolerance is approximately + nominal torque value.

Class 10.9 Bolts, Screws and Studs with

(Class 10 or Stronger Nuts)

10% of the

Product Records

and Maintenance

ProCore 864/1298 Page 2 − 5 Product Records and Maintenance

Other Torque Specifications

Thread Size

Size

Baseline Torque*

SAE Grade 8 Steel Set Screws

Recommended Torque

Square Head Hex Socket

1/4 − 20 UNC 140 + 20 in−lb 73 + 12 in−lb

5/16 − 18 UNC 215 + 35 in−lb 145 + 20 in−lb

3/8 − 16 UNC 35 + 10 ft−lb 18 + 3 ft−lb 1/2 − 13 UNC 75 + 15 ft−lb 50 + 10 ft−lb

Thread Cutting Screws

(Zinc Plated Steel)

Type 1, Type 23 or Type F

Thread Size Baseline Torque*

No. 6 − 32 UNC 20 + 5 in−lb

Wheel Bolts and Lug Nuts

Thread Size

7/16 − 20 UNF

Grade 5

1/2 − 20 UNF

Grade 5

M12 X 1.25

Class 8.8

M12 X 1.5

Class 8.8

** For steel wheels and non−lubricated fasteners.

Thread Cutting Screws

(Zinc Plated Steel)

Thread

No. 6 18 20 20 + 5 in−lb

Threads per Inch Type A Type B

Recommended Torque**

65 + 10 ft−lb 88 + 14 N−m

80 + 10 ft−lb 108 + 14 N−m

No. 8 − 32 UNC 30 + 5 in−lb

No. 10 − 24 UNC 38 + 7 in−lb

1/4 − 20 UNC 85 + 15 in−lb

5/16 − 18 UNC 110 + 20 in−lb

3/8 − 16 UNC 200 + 100 in−lb

Conversion Factors

in−lb X 11.2985 = N−cm N−cm X 0.08851 = in−lb

ft−lb X 1.3558 = N−m N−m X 0.7376 = ft−lb

No. 8 15 18 30 + 5 in−lb No. 10 12 16 38 + 7 in−lb No. 12 11 14 85 + 15 in−lb

* Hole size, material strength, material thickness & finish must be considered when determining specific torque values. All torque values are based on non−lubricated fasteners.

ProCore 864/1298Page 2 − 6Product Records and Maintenance

Table of Contents

SERVICE AND REPAIRS 2. . . . . . . . . . . . . . . . . . . . . .

Roller 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Turf Guards 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Covers (ProCore 864) 6. . . . . . . . . . . . . . . . . .

Front Covers (ProCore 1298) 8. . . . . . . . . . . . . . . . .

Hitch Frame (ProCore 1298) 10. . . . . . . . . . . . . . . . .

Chapter 3

Chassis

ProCore 864/1298 Page 3 − 1 Chassis

Service and Repairs

Roller

PROCORE 864 SHOWN

ANTISEIZE

LUBRICANT

FRONT

RIGHT

1. Roller

2. Flange bearing (2 used)

3. Cap screw (2 used per bearing)

4. Lock nut (2 used per bearing)

5. Scraper arm (2 used)

ANTISEIZE

LUBRICANT

Figure 1

6. Carriage screw (2 used per arm)

7. Flange nut

8. Roller scraper

9. Compression spring

10. Grease fitting

11. Bolt

12. Hex nut

13. Set screw

14. Hitch frame

ProCore 864/1298Page 3 − 2Chassis

Roller Removal (Fig. 1)

Roller Installation (Fig. 1)

1. Position aerator on a firm, level surface with aerator attached to tractor. Disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch. Support aerator to prevent it from moving.

2. Chock roller to prevent it from moving.

3. Loosen flange bearings from roller shaft: A. Loosen set screw (item 2.1) that secures each

bearing locking collar to roller shaft. B. Using the blind hole in bearing locking collars as a

striking point, unlock collars from roller shaft by rotating the collars with a punch in the opposite direction of normal roller rotation.

4. Remove two (2) cap screws and lock nuts that se-

cure both flange bearings (item 2) to aerator frame.

5. Start engine on tow vehicle. Slowly raise aerator

while allowing roller to remain on the ground. Stop tow vehicle engine. Support raised aerator to prevent it from lowering unexpectedly.

CAUTION

To prevent personal injury, make sure that roller is supported as it is removed from the machine. Roller weighs approximately 133 pounds (60 kg).

1. Clean roller shaft ends and apply antiseize lubricant to shaft ends. Slide bearings onto roller shafts. Do not tighten set screws at this time.

CAUTION

To prevent personal injury, make sure that roller is supported as it is installed to the machine. Roller weighs approximately 133 pounds (60 kg).

2. Position roller with flange bearings under raised aerator.

3. Start engine on tow vehicle. Slowly lower aerator to position aerator frame to roller assembly.

4. Align holes in bearing flanges with holes in aerator frame. Orientate bearing so that grease fittings point to front of aerator. Secure both flange bearings to frame with two (2) cap screws and lock nuts.

5. Check that roller is free to rotate and no binding exists. Center roller between bearings.

6. Using the blind hole in the flange mount bearing locking collars as a striking point, lock collars to roller shaft by rotating the collars with a punch in the direction of normal roller rotation. Tighten set screw (item 2.1) to secure each bearing locking collar to roller shaft.

Chassis

6. Remove roller with flange bearings from under ma-

chine.

7. Slide bearings from roller shaft.

7. Check that clearance between roller scraper and roller is from 0.060” to 0.090” (1.5 to 2.2 mm) along entire length of scraper. Adjust scraper position if necessary.

8. Lubricate grease fittings on roller bearings.

ProCore 864/1298 Page 3 − 3 Chassis

Turf Guards

PROCORE 864 SHOWN

FRONT

RIGHT

1. Lock nut

2. Thrust washer

3. Spring bracket

4. Screw (2 used per bracket)

5. Flat washer

6. Spring rod sleeve

7. Compression spring

8. Spring rod

Figure 2

9. Jam nut

10. Spring tube

11. Cap screw

12. Flange nut

13. Carriage screw

14. Flange nut

15. Turf guard clamp

16. Flange bushing

17. Thrust washer

18. Stub shaft

19. RH turf guard

20. Shaft

21. LH turf guard

22. Rib neck screw

23. Hitch frame

24. Turf guard

ProCore 864/1298Page 3 − 4Chassis

Removal (Fig. 2)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Disconnect spring assembly from turf guard:

NOTE: On ProCore 864 machines, there is one (1) thrust washer on each side of the turf guard. On ProCore 1298 machines, there are two (2) thrust washers on each side of turf guard (Fig. 3).

4. Place thrust washer(s) between each side of turf guard and frame.

A. Remove flange nut (item 12) that secures spring assembly to turf guard.

B. Slide end of cap screw (item 11) from bracket on turf guard.

C. Position spring assembly away from turf guard.

3. On both sides of frame, loosen and remove two (2)

carriage screws and flange nuts that secure turf guard pivot shafts to frame.

NOTE: On ProCore 864 machines, the LH pivot shaft extends completely through the LH turf guard and into the RH turf guard.

4. Slide pivot shafts from frame and turf guard.

NOTE: On ProCore 864 machines, there is one (1) thrust washer on each side of the turf guard. On ProCore 1298 machines, there are two (2) thrust washers on each side of turf guard (Fig. 3).

5. Remove turf guard assembly from machine. Locate

and retrieve thrust washer(s) from each side of turf guard.

5. On both sides of frame, slide turf guard pivot shafts through frame and into turf guard. Secure pivot shafts to frame with two (2) carriage screws and flange nuts.

6. Connect spring assembly to turf guard: A. Slide end of cap screw (item 11) through bracket

on turf guard. B. Secure spring assembly to turf guard with flange

nut.

PROCORE 1298

Chassis

6. Disassemble turf guard and spring assembly as needed using Figure 2 as a guide.

7. If necessary, use press to remove rib neck screws (item 22) from turf guard.

Installation (Fig. 2)

1. If rib neck screws were removed from turf guard, use press to install screws into turf guard. Make sure that screw heads are flush with turf guard surface.

2. Assemble turf guard and spring assembly as needed using Figure 2 as a guide. If spring assembly was taken apart, use dimensions shown in Figure 4 during the assembly process.

3. Make sure that keyed flange bushing (item 16) is correctly placed in each end of turf guard. Position turf guard assembly to aerator.

1. Turf guard

2. Stub shaft

2.410” to 2.530”

(61.2 to 64.2 mm)

Figure 3

3. Thrust washer

5.940” to 6.060”

(150.9 to 153.9 mm)

Figure 4

ProCore 864/1298 Page 3 − 5 Chassis

Front Covers (ProCore 864)

FRONT

RIGHT

1. Front cover

2. RH pulley shield

3. LH pulley shield

4. Flange head screw

5. Flat washer

6. Iso mount

7. Flat washer

Figure 5

8. Tinnerman nut

9. Front cover support (3 used)

10. Carriage screw (2 used per support)

11. Flange nut

12. Side shield (2 used)

13. Screw (2 used)

14. LH shield support

15. RH shield support

16. Lock nut (2 used)

17. Manual housing

18. Housing cap

19. R−Clamp (2 used)

20. PTO shield

ProCore 864/1298Page 3 − 6Chassis

Removal (Fig. 5)

Installation (Fig. 5)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood.

3. T o remove either pulley shield (items 2 or 3), remove four (4) flange head screws and flat washers that secure pulley shield to coring frame. Remove pulley shield.

4. To remove front cover (item 1): A. Remove four (4) flange head screws and four (4)

flat washers that secure PTO shield (item 20) to front cover. Remove PTO shield.

B. Remove one of the pulley shields (see step 3 above).

C. Remove seven (7) flange head screws and flat washers that secure front cover to frame. Remove front cover.

1. Make sure that tinnerman nuts (item 8) are properly positioned to frame. Also, make sure that iso mounts (item 6) are placed in cover holes.

2. Position front cover to aerator frame and secure with removed fasteners. Attach PTO shield to front cover with removed fasteners.

3. After front cover is installed, position pulley shield to aerator frame and secure with removed fasteners.

4. Install rear hood.

Chassis

ProCore 864/1298 Page 3 − 7 Chassis

Front Covers (ProCore 1298)

FRONT

RIGHT

1. Front cover (RH shown)

2. Pulley shield (RH shown)

3. Yoke cover

4. Flange head screw

5. Flat washer

6. Iso mount

7. Screw (2 used)

Figure 6

8. Tinnerman nut

9. Front cover support (2 used)

10. Carriage screw (4 used)

11. Flange nut (8 used)

12. Side shield

13. Flat washer (2 used)

14. Hitch frame

15. Shield support (RH shown)

16. Screw (4 used)

17. Manual housing

18. Housing cap

19. R−clamp (2 used)

20. Lock nut (2 used)

21. Subframe (RH shown)

ProCore 864/1298Page 3 − 8Chassis

Removal (Fig. 6)

Installation (Fig. 6)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood.

3. To remove pulley shield (item 2), remove four (4)

flange head screws and flat washers that secure pulley shield to coring frame. Remove pulley shield.

4. To remove front cover (item 1): A. Remove one of the pulley shields (see step 3

above). B. Remove five (5) flange head screws and flat

washers that secure front cover to frame. Remove front cover.

5. To remove yoke cover (item 3), remove four (4)

flange head screws and flat washers that secure yoke cover to hitch frame. Remove yoke cover.

1. Make sure that tinnerman nuts (item 8) are properly positioned to machine. Also, make sure that iso mounts are placed in cover holes.

2. Position cover to aerator frame and secure with removed fasteners.

3. After front cover is installed, position shield to aerator frame and secure with removed fasteners.

4. Install rear hood.

Chassis

ProCore 864/1298 Page 3 − 9 Chassis

Hitch Frame (ProCore 1298)

FRONT

RIGHT

1. Hitch frame

2. Lynch pin (2 used)

3. Link pin (2 used)

4. Washer (2 used)

5. Hex nut (2 used)

6. Grease fitting (2 used)

Figure 7

7. Pad (2 used)

8. Flange head screw (4 used per pad)

9. Lynch pin (2 used)

10. Clevis pin

11. Flange nut (4 used per pad)

12. RH subframe

13. LH subframe

14. Pivot shaft (2 used)

15. Roll pin (2 used)

16. Thrust washer (4 used)

17. Lock nut (2 used)

ProCore 864/1298Page 3 − 10Chassis

Removal (Fig. 7)

1. Position aerator on a firm, level surface and discon-

nect aerator from tractor.

2. Support subframes, coring frames and hitch frame

assemblies to prevent them from falling or shifting unexpectedly.

3. Remove front covers (see Front Covers (ProCore

1298) Removal in this section).

4. Disconnect both coring head driveshafts from gear-

box (see Driveshaft Removal in the Service and Repairs section of Chapter 4 − Coring Head). Position and support driveshafts away from hitch frame.

5. Remove gearbox from hitch frame (see Gearbox Re-

moval in the Service and Repairs section of Chapter 4

− Coring Head).

6. Remove lock nuts that secure pivot shafts to sub-

frames and hitch frame.

3. Install gearbox to hitch frame (see Gearbox Installation in the Service and Repairs section of Chapter 4 − Coring Head).

4. Connect both coring head driveshafts to gearbox (see Driveshaft Installation in the Service and Repairs section of Chapter 4 − Coring Head).

5. Install front covers (see Front Covers (ProCore

1298) Installation in this section).

6. Lubricate grease fittings on subframe pivot tubes.

7. Make sure that aerator frame sections are sup-

ported.

8. Slide both pivot shafts from subframe and hitch

frame. Locate and retrieve thrust washer (item 16) from each side of subframe.

9. Lift subframe assemblies from hitch frame. Remove

hitch frame.

10.Inspect bushings in subframe for wear or damage

(Fig. 8). Replace bushings if necessary.

Installation (Fig. 7)

1. Position hitch frame to subframe assemblies.

2. Connect both subframes to hitch frame: A. Place thrust washer on each side of subframe

pivot tube. B. Slide pivot shaft through hitch frame, both thrust

washers and subframe pivot. Make sure that roll pin in pivot shaft is positioned in frame reliefs.

Chassis

Figure 8

1. Subframe 2. Flange bushing

C. Install lock nut onto pivot shaft. Tighten lock nut until the total clearance between the subframe and hitch frame is from 0.010” to 0.030” (0.3 to 0.7 mm).

ProCore 864/1298 Page 3 − 1 1 Chassis

This page is intentionally blank.

ProCore 864/1298Page 3 − 12Chassis

Table of Contents

SPECIFICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL INFORMATION 4. . . . . . . . . . . . . . . . . . . . .

ProCore 864 Coring Head 4. . . . . . . . . . . . . . . . . . . .

ProCore 1298 Coring Head 6. . . . . . . . . . . . . . . . . . .

Coring Head Adjustments 8. . . . . . . . . . . . . . . . . . . .

SPECIAL TOOLS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SERVICE AND REPAIRS 10. . . . . . . . . . . . . . . . . . . . .

Rotolink Damper Assemblies 10. . . . . . . . . . . . . . . .

Stomper Arms 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coring Crankshaft Bearing Housings

(ProCore 864) 16. . . . . . . . . . . . . . . . . . . . . . . . . . .

Coring Crankshaft Bearing Housings

(ProCore 1298) 20. . . . . . . . . . . . . . . . . . . . . . . . . .

Coring Head Drive Belt 24. . . . . . . . . . . . . . . . . . . . .

Coring Head Drive 26. . . . . . . . . . . . . . . . . . . . . . . . .

Coring Head Pivot (H−Frame) 28. . . . . . . . . . . . . . .

Depth Control Assembly 32. . . . . . . . . . . . . . . . . . . .

Depth Control Assembly Service 34. . . . . . . . . . . . .

Driveshafts 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Driveshaft Cross and Bearing Service 38. . . . . . . .

Gearbox 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gearbox Service 42. . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4

Coring Head

ProCore 864/1298 Page 4 − 1 Coring Head

Specifications

Item Description

Gearbox

Lubricant GL−5 API, SAE 80W−90 gear lube Capacity 56 US fl. oz. (1.65 liter)

ProCore 864/1298Page 4 − 2Coring Head

This page is intentionally blank.

Coring Head

ProCore 864/1298 Page 4 − 3 Coring Head

General Information

ProCore 864 Coring Head

1. Driven pulley

2. #1 stomper arm

3. #8 stomper arm

Figure 1

4. Bearing housing (4 used)

5. Crankarm (2, 4, 6) (4 used)

6. Crankarm (3, 5) (3 used)

7. Coupler assembly (3 used)

8. Counter weight

ProCore 864/1298Page 4 − 4Coring Head

Operation

The coring head of the ProCore 864 consists of a frame, a coring crankshaft assembly, turf holders, tine holders and aerating tines. The crankshaft assembly operates eight (8) stomper arms with rotolink assemblies to provide vertical tine motion. The coring head frame pivots to allow aerating depth control.

Drive for the coring head comes from the tow tractor PTO. A gearbox on the ProCore is turned by a driveshaft connected to the tractor PTO. The gearbox provides rotation for the coring head crankshaft assembly.

The crankshaft assembly is supported with four (4) identical bearing housing assemblies. Each bearing housing supports two (2) crankarms.

The crankarm used in the #1 crankshaft position is incorporated into the driven pulley. The remaining odd numbered crankshaft positions (#3, #5 and #7) use the same crankarm. These crankarm castings can be identified with the numbers 3 and 5 in the castings. Crankarms used in even numbered crankshaft positions (#2, #4, #6 and #8) are the same component. These crankarms can be identified with the numbers 2, 4 and 6 in the crankarm castings.

The gearbox rotates a single driveshaft which in turn rotates a pulley to drive the coring crankshaft assembly with a 4 groove drive belt. This drive belt is tensioned by a spring loaded idler pulley.

The coring crankshaft is composed of multiple crankarms, bearings, bearing housings and couplings. The crankshaft assembly is designed to ensure minimal vibration during aerator operation.

Aeration depth control is performed by adjusting the coring head depth control assembly to obtain the desired aerating depth.

Turf holders are used to prevent damage to the turf as the tines are lifted from the ground.

A variety of tines, tine heads and turf holders are available for use on the ProCore 864. See the Operator’s Manual for available options.

Coring Crankshaft (Fig. 1)

The coring crankshaft assembly is composed of eight (8) crankarms. The crankarms are timed for proper aerating operation. Coring crankshaft positions are identified based on their relationship with the crankshaft driven pulley . The #1 position is at the pulley side of the crankshaft (Fig. 1).

Three (3) coupler assemblies are used to connect the crankarms that are secured in the bearing housings. These coupler assemblies use the same components: a #2 coupling, a #3 coupling, a coupling plate, two (2) iso−mounts and necessary fasteners. The #2 couplings attach to even numbered crankarms. The #3 couplings are secured to odd numbered crankarms.

Two counterweights are incorporated into the ProCore 864 coring crankshaft to ensure the rotational balance of the crankshaft assembly. One of the counterweights is bolted to the driven pulley. The second counterweight is attached to the #8 crankarm position.

The stomper arms and rotolink assemblies used on the ProCore 864 are the same for all crankshaft positions.

Coring Crankshaft Timing

On the ProCore 864 aerator, each pair of crankarms joined through a bearing housing are assembled with the crankarm journals positioned 180

apart. The coupler assemblies that connect these pairs of crankarms allow for proper phasing of the crankshaft to allow minimal operating vibration.

NOTE: On the ProCore 864, the numbers cast into the crankarms will not align with the raised indicator marks on the bearing housings.

Coring Head

ProCore 864/1298 Page 4 − 5 Coring Head

ProCore 1298 Coring Head

1. Driven pulley

2. #1 stomper arm

3. #6 stomper arm

Figure 2

4. Bearing housing (3 used)

5. Crankarm (#2 and #4)

6. Crankarm (#3 and #5)

7. Crankarm (#6)

8. Coupling assembly (2 / 3)

9. Coupling Assembly (4 / 5)

ProCore 864/1298Page 4 − 6Coring Head

Operation

The ProCore 1298 is comprised of two (2) independent coring heads connected with a pivoting subframe system. Each of the coring heads includes a coring crankshaft assembly, turf holders, tine holders and aerating tines. The crankshaft assembly operates six (6) stomper arms with rotolink assemblies to provide vertical tine motion. The coring head frame pivots to allow aerating depth control.

The crankarm used in the #1 crankshaft position is incorporated into the driven pulley. Crankarms used in crankshaft positions #2 and #4 are the same component. These crankarms can be identified with the numbers 2, 4 and 6 in the crankarm castings. Crankarms used in crankshaft positions #3 and #5 use the same crankarm and can be identified with the numbers 3 and 5 in the castings. The crankarm used in crankshaft position #6 is different than other crankarms and has the numbers 2, 4 and 6 in the casting.

Drive for the dual coring heads comes from the tow tractor PTO. A single gearbox on the ProCore is turned by a driveshaft connected to the tractor PTO. The gearbox provides rotation for the two (2) coring head crankshaft assemblies.

The ProCore gearbox rotates two (2) driveshafts. Each of these driveshafts rotates a coring head crankshaft with a pulley and 4 groove drive belt tensioned by a spring loaded idler pulley.

The two (2) coring crankshafts are composed of multiple crankarms, bearings, bearing housings and couplings. For assembly purposes, proper crankshaft component position is identified by alignment marks on bearing housings and numbers cast into crankarms and coupling components. Crankarm journals are timed to ensure minimal vibration.

Aeration depth control is performed by adjusting the coring head depth control assembly to obtain the desired aerating depth.

Turf holders are used to prevent damage to the turf as the tines are lifted from the ground.

A variety of tines, tine heads and turf holders are available for use on the ProCore 1298. See the Operator’s Manual for available options.

Coring Crankshaft (Fig. 2)

Two (2) coupler assemblies are used to connect the crankarms that are secured in the bearing housings. These coupler assemblies use two (2) couplings, a coupling plate, two (2) iso−mounts and necessary fasteners. The couplings used on the ProCore 1298 are all different. The couplings are identified with the crankshaft position in the coupling casting.

The stomper arms and rotolink assemblies used on the ProCore 1298 are the same for all crankshaft positions.

Coring Crankshaft Timing

When properly assembled, the crankshaft position numbers on the crankarms will align with the raised alignment marks on the bearing housing (Fig. 3). The timing of either coring head is not dependent on the adjacent coring head.

Coring Head

Each of the ProCore 1298 coring crankshaft assemblies

is composed of six (6) crankarms. The crankarms are timed for proper aerating operation. Coring crankshaft positions are identified based on their relationship with the crankshaft driven pulley. The #1 position is at the

1. Housing timing mark 2. Crankarm position

Figure 3

pulley side of the crankshaft (Fig. 2). The crankshaft assembly on each of the coring heads is

supported with three (3) identical bearing housing assemblies. Each bearing housing supports two (2) crankarms.

ProCore 864/1298 Page 4 − 7 Coring Head

Coring Head Adjustments

See Operator’s Manual for adjustment procedures for the coring head on the ProCore 864 and 1298.

CAUTION

Never work on the coring head with the tow tractor PTO engaged or engine running. Always disengage the PTO, stop tractor engine, remove key from the ignition switch and wait for all machine movement to stop before performing any service to coring head components.

ProCore 864/1298Page 4 − 8Coring Head

Special Tools

Compression Spring Tool

Use to remove and install the coring head compression springs. Obtain these items locally.

NOTE: The ProCore 864 uses two (2) compression springs for its single coring frame. The ProCore 1298 uses one (1) compression spring for each of its dual coring frames.

5”

20”

Figure 4

1. Threaded rod (1/2” or 5/8” diameter)

2. Nut (2 used)

3. Flat washer (2 used)

Coring Head Drive Pulley Tool

Use to remove the coring head drive pulley. Obtain these items locally.

Coring Head

Cap Screw (Full Thread)

.375” − 16 UNC − 2B

Figure 5

1. Drive pulley 2. Cap screw (full thread)

ProCore 864/1298 Page 4 − 9 Coring Head

Service and Repairs

)

Rotolink Damper Assemblies

FRONT

RIGHT

1. Rotolink damper

2. Stud (2 used per rotolink)

3. Bumper (2 used per rotolink)

4. Standoff (4 used per rotolink)

5. Hardened D washer

6. Flange nut (2 used per rotolink)

9 8

7. Cap screw

8. Ball bearing

9. Damper link

10. Lock nut

11. Cap screw

LOCTITE #242

Figure 6

150 to 170 ft−lb

(204 to 230 N−m)

12. Hardened washer

13. Flange nut

14. Rubber bumper (2 used per rotolink

15. Stomper arm

16. Coring head frame

NOTE: The rotolink damper assemblies for all stomper

arms used on ProCore 864 and 1298 aerators are identical.

ProCore 864/1298Page 4 − 10Coring Head

Disassembly (Fig. 6)

Assembly (Fig. 6)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rotolink components as needed using Figure 6 as a guide.

1. If studs (item 2) were removed from rotolink damper (item 1), apply Loctite #242 (or equivalent) to threads of studs. Thread stud fully into damper.

2. If bearings (item 8) were removed from damper links, press new bearings into links. Make sure that bearings are pressed completely to the shoulder of the link bore.

3. Assemble all components before fully tightening any fasteners so there is no preload on rotolink damper components. Tighten fasteners in the following order:

A. Secure damper links (item 9) to stomper arm (item 15) and damper (item 1). Torque lock nuts (item

10) from 150 to 170 ft−lb (204 to 230 N−m). B. Tighten two (2) flange nuts (item 13) that secure

damper links. C. Tighten two (2) flange nuts (item 6) that secure

damper to frame.

4. After assembly, rotate coring crankshaft by hand to make sure that no binding occurs.

Coring Head

ProCore 864/1298 Page 4 − 1 1 Coring Head

Stomper Arms

210 to 230 ft−lb

(285 to 311 N−m)

FRONT

RIGHT

LUBRICANT

ANTISEIZE

PROCORE 1298 STOMPER ARMS #1 AND #2 SHOWN

1. Cap screw

2. Flat washer

3. Ball bearing (2 used per arm)

4. Retaining ring

5. Bearing spacer

6. Stomper arm

7. Crankshaft driven pulley

8. Bearing housing assembly

NOTE: All stomper arms used on ProCore 864 and

1298 aerators are identical. Coring crankshaft positions are identified based on their relationship with the crankshaft driven pulley. The #1 position is at the pulley side of the coring crankshaft (Fig. 8).

Figure 7

210 to 230 ft−lb

9. Coring head frame

10. Square key

11. Coupling

12. Crankarm

(285 to 311 N−m)

IMPORTANT: Before disassembling the coring crankshaft, label location of components that are to be removed. Correct component location and orientation are necessary for proper aerator operation.

Figure 8

1. Crankshaft driven pulley

2. #1 position (ProCore 1298 LH coring head shown)

3. #6 position (ProCore 1298 LH coring head shown)

ProCore 864/1298Page 4 − 12Coring Head

Removal (Fig. 7)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood.

3. For stomper arm that is to be removed, remove two (2) flange nuts and hardened D washers that secure rotolink damper to coring head frame (Fig. 9) (see Rotolink Damper Assemblies in this section).

WARNING

As crankshaft components are removed from machine, the crankshaft will become out of balance and may rotate quickly, creating pinch points and potential for personal injury. Be cautious when disassembling the coring crankshaft.

4. If an outside stomper arm is to be removed: A. If #1 (pulley side) stomper arm is being removed,

remove coring head drive belt (see Coring Head Drive Belt Removal in this section).

B. Remove cap screw and flat washer that retain stomper arm to coring crankshaft.

C. If #8 (final) stomper arm is being removed from a ProCore 864, remove counter weight (item 3, Fig.

10) from coring crankshaft. D. Support stomper arm assembly to prevent it from

falling during removal. Slide stomper arm from coring crankshaft. Carefully lower stomper arm assembly from coring head frame.

5. If an inside stomper arm is to be removed: A. Remove fasteners that secure coupling plate to

coupling on stomper arm to be removed (Fig. 11). B. Remove cap screw and flat washer that secures

coupling and stomper arm to coring crankshaft.

1. Rotolink damper

2. D washer (2 used)

PROCORE 864

1. Stomper arm (#8)

2. Crankarm

Figure 9

3. Flange nut (2 used)

4. Stomper arm

Coring Head

Figure 10

3. Counter weight

C. Slide coupling from coring crankshaft. Locate and retrieve square key.

D. Support stomper arm assembly to prevent it from falling during removal. Slide stomper arm from coring crankshaft. Carefully lower stomper arm assembly from coring head frame.

6. If necessary, remove ball bearings, bearing spacer

and retaining ring from stomper arm.

ProCore 864/1298 Page 4 − 13 Coring Head

7. If necessary, remove tines and tine holders from stomper arm (see Operator’s Manual).

8. Remove rotolink damper components from stomper arm as needed (see Rotolink Damper Assemblies in this section).

Installation (Fig. 7 and 11)

1. If bearings were removed from stomper arm, install retaining ring into groove in upper bore of stomper arm. Make sure that retaining ring is properly seated in groove. Position bearing spacer and press two (2) ball bearings into stomper arm bore.

150 to 170 ft−lb

(204 to 230 N−m)

2. Install all rotolink damper components that were removed during disassembly (see Rotolink Damper Assemblies in this section).

3. Apply antiseize lubricant liberally to crankarm shaft surface.

4. Raise stomper arm assembly up through coring head frame. Slide stomper arm onto coring crankshaft.

5. Secure stomper arm to coring crankshaft in the reverse order of disassembly.

A. Torque grade 5, 5/8” cap screws (item 4, Fig. 1 1) from 150 to 170 ft−lb (204 to 230 N−m).

B. Torque grade 8, 5/8” cap screws (item 1, Fig. 7) from 210 to 230 ft−lb (285 to 311 N−m).

C. Torque 1/2” cap screws (item 6, Fig. 11) from 70 to 80 ft−lb (95 to 108 N−m).

6. Secure rotolink damper to coring head frame with two (2) lock nuts and hardened D washers (Fig. 9) (see Rotolink Damper Assemblies in this section).

70 to 80 ft−lb

(95 to 108 N−m)

1. Coupling (#3 shown)

2. Iso mount (2 used)

3. Coupling (#2 shown)

4. Cap screw (2 used)

Figure 11

5. Coupling plate

6. Cap screw (4 used)

7. Lock nut (2 used)

8. Flat washer (2 used)

7. After assembly, rotate coring crankshaft by hand to make sure that no binding occurs.

8. If removed, install tine holders and tines to stomper arm (see Operator’s Manual).

9. If removed, install coring head drive belt (see Coring Head Drive Belt Installation in this section).

10.Install rear hood.

ProCore 864/1298Page 4 − 14Coring Head

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Coring Head

ProCore 864/1298 Page 4 − 15 Coring Head

Coring Crankshaft Bearing Housings (ProCore 864)

70 to 80 ft−lb

(95 to 108 N−m)

FRONT

RIGHT

210 to 230 ft−lb

(285 to 311 N−m)

22 23

ANTISEIZE

LUBRICANT

210 to 230 ft−lb

(285 to 311 N−m)

PROCORE 864 STOMPER ARMS #3 AND #4 SHOWN

Figure 12

1. Cap screw

2. Flat washer

3. Ball bearing (2 used per arm)

4. Retaining ring

5. Bearing spacer

6. Stomper arm (8 used)

7. Ball bearing (2 used per housing)

8. Bearing housing (4 used)

9. Bearing spacer

10. Square key

11. Spring pin (2 used per housing)

12. Cap screw (4 used per housing)

13. Hardened washer

14. Lock nut (4 used per housing)

15. Crankarm (#2/4/6 casting) (4 used)

16. Coupling (#2 casting) (3 used)

17. Crankarm (#3/5/7 casting) (3 used)

NOTE: The bearing housings used on ProCore 864

aerators are identical. Coring crankshaft positions are identified based on their relationship with the crankshaft driven pulley . The #1 position is at the pulley side of the coring crankshaft (Fig. 13).

210 to 230 ft−lb

(285 to 311 N−m)

18. Coring head frame

19. Coupling (#3 casting) (3 used)

20. Cap screw (4 used per plate)

21. Cap screw (2 used per plate)

22. Coupling plate (3 used)

23. Iso mount (2 used per plate)

24. Snubbing washer (2 used per plate)

25. Lock nut (2 used per plate)

IMPORTANT: Before disassembling the coring crankshaft, label location of components that are to be removed. Correct component location and orientation are necessary for proper aerator operation.

ProCore 864/1298Page 4 − 16Coring Head

Removal (Fig. 12)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood.

3. If bearing housing for #1 and #2 stomper arms is to

be removed, remove coring head drive belt (see Coring Head Drive Belt Removal in this section).

WARNING

4. Remove stomper arms and couplings on both sides

of bearing housing that is to be removed (see Stomper Arm Removal in this section).

5. Drive spring pins (item 11) from bearing housing and

coring head frame.

6. Support bearing housing assembly to prevent it from

falling. Remove fasteners that secure bearing housing assembly to coring head frame. Remove bearing housing assembly from machine.

7. Disassemble bearing housing assembly:

Figure 13

1. Crankshaft driven pulley

2. #1 crankshaft position

70 to 80 ft−lb

(95 to 108 N−m)

3. #8 crankshaft position

150 to 170 ft−lb

(204 to 230 N−m)

Coring Head

A. Remove cap screw (item 1) and flat washer (item

2) that fasten crankarms together. Note that crankarm journals are positioned 180

from each other.

B. Slide crankarms from bearing housing.

1. Coupling (#3 shown)

2. Iso mount (2 used)

3. Coupling (#2 shown)

4. Cap screw (2 used)

Figure 14

5. Coupling plate

6. Cap screw (4 used)

7. Lock nut (2 used)

8. Washer (2 used)

C. If necessary, remove bearings and bearing spacer from bearing housing.

8. If necessary, remove counterweight from driven

pulley (Fig. 15).

Loctite #242

Installation (Fig. 12)

1. Install new bearings if they were removed from bear-

ing housing:

A. Install new bearing into one side of housing by pressing on outer race of bearing.

B. Position bearing spacer into bearing housing. C. Install second new bearing into housing by press-

ing on outer race of bearing. Make sure that spacer is

1. Driven pulley

2. Counterweight

Figure 15

3. Flange head screw

centered between bearings.

ProCore 864/1298 Page 4 − 17 Coring Head

2. If counterweight was removed from driven pulley, ap ply Loctite #242 (or equivalent) to threads of flange head screws and secure counterweight to pulley.

3. Apply antiseize lubricant liberally to crankarm splines and journals.

4. Install crankarms into bearing housing. Make sure that crankarm journals are positioned 180

from each

other.

5. Install cap screw (item 1) and flat washer (item 2) to retain crankarms. Do not fully tighten cap screw.

6. Drive new spring pins (item 11) into coring head frame holes.

7. Position bearing housing assembly to coring head frame. Make sure that crankarms identified with 2/4/6 in the casting are orientated toward the left side of the machine.

8. Secure bearing housing to frame with four (4) cap screws, eight (8) hardened washers and four (4) lock nuts. Torque fasteners from 70 to 80 ft−lb (95 to 108 N−m).

9. Install stomper arms and couplings to crankarms on both sides of bearing housing (see Stomper Arm Installation in this section). Do not fully tighten fasteners.

IMPORTANT: On the ProCore 864, the numbers cast into the crankarms will not align with the raised indicator marks on the bearing housings.

10.Once all stomper arm and crankarm components have been installed, fully tighten fasteners in the following order (Fig. 16). Tighten fasteners to the torque specifications identified in Figures 12 and 14:

A. Cap screw used to secure crankarms. B. Cap screws that secure top of stomper arms.

1. Crankarm screw

2. Stomper arm screw

Figure 16

3. Coupling plate screw

4. Damper lock nut

C. Cap screws that secure coupling plates (Fig. 14). D. Lock nuts that secure rotolink dampers to frame

(see Rotolink Damper Assemblies in this section).

11.After assembly, rotate coring crankshaft by hand to make sure that no binding occurs.

12.If removed, install coring head drive belt (see Coring Head Drive Belt Installation in this section).

13.Install rear hood.

ProCore 864/1298Page 4 − 18Coring Head

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Coring Head

ProCore 864/1298 Page 4 − 19 Coring Head

Coring Crankshaft Bearing Housings (ProCore 1298)

FRONT

RIGHT

210 to 230 ft−lb

(285 to 311 N−m)

ANTISEIZE

LUBRICANT

70 to 80 ft−lb

(95 to 108 N−m)

210 to 230 ft−lb

(285 to 311 N−m)

ANTISEIZE

LUBRICANT

PROCORE 1298 STOMPER ARMS #1 AND #2 SHOWN

Figure 17

1. Cap screw

2. Flat washer

3. Ball bearing (2 used per arm)

4. Retaining ring

5. Bearing spacer

6. Stomper arm

7. Ball bearing (2 used per housing)

8. Bearing housing

9. Bearing spacer

10. Square key

11. Spring pin (2 used per housing)

12. Cap screw (4 used per housing)

NOTE: The bearing housings used on ProCore 1298

IMPORTANT: Before disassembling the coring crankshaft, label location of components that are to be removed. Correct component location and orientation are necessary for proper aerator operation.

13. Hardened washer

14. Lock nut (4 used per housing)

15. Crankarm

16. Coupling

17. Coring head frame

18. Crankshaft driven pulley

ProCore 864/1298Page 4 − 20Coring Head

Removal (Fig. 17)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood.

WARNING

3. If bearing housing for #1 and #2 stomper arms is to

be removed, remove coring head drive belt (see Coring Head Drive Belt Removal in this section).

4. Remove stomper arms and couplings on both sides

of bearing housing that is to be removed (see Stomper Arm Removal in this section).

5. Drive spring pins (item 11) from bearing housing and

coring head frame.

6. Support bearing housing assembly to prevent it from

falling. Remove fasteners that secure bearing housing assembly to coring head frame. Remove bearing housing assembly from machine.

7. Disassemble bearing housing assembly: A. Remove cap screw (item 1) and flat washer (item

2) that fasten crankarms together. Take note of alignment of crankarm identification number with timing mark on bearing housing (Fig. 19).

B. Slide crankarms from bearing housing.

Figure 18

1. Crankshaft driven pulley

2. #1 position (ProCore 1298 LH coring head shown)

3. #6 position (ProCore 1298 LH coring head shown)

Figure 19

1. Housing timing mark 2. Crankarm position

150 to 170 ft−lb

(204 to 230 N−m)

Coring Head

C. If necessary, remove bearings and bearing spacer from bearing housing.

Installation (Fig. 17)

1. Install new bearings if they were removed from bear-

ing housing:

A. Install new bearing into one side of housing by

pressing on outer race of bearing.

B. Position bearing spacer into bearing housing. C. Install second new bearing into housing by press-

ing on outer race of bearing. Make sure that spacer is centered between bearings.

70 to 80 ft−lb

(95 to 108 N−m)

1. Coupling (#3 shown)

2. Iso mount (2 used)

3. Coupling (#2 shown)

4. Cap screw (2 used)

Figure 20

5. Coupling plate

6. Cap screw (4 used)

7. Lock nut (2 used)

8. Flat washer (2 used)

ProCore 864/1298 Page 4 − 21 Coring Head

2. Apply antiseize lubricant liberally to crankarm splines and journals.

3. Install crankarms into bearing housing. Make sure that correct identification number on crankarm is aligned with timing mark on bearing housing (Fig. 19).

4. Install cap screw (item 1) and flat washer (item 2) to retain crankarms. Do not fully tighten cap screw.

5. Drive new spring pins (item 11) into coring head frame holes.

6. Position bearing housing assembly to coring head frame.

7. Secure bearing housing to frame with four (4) cap screws, eight (8) hardened washers and four (4) lock nuts. Torque fasteners from 70 to 80 ft−lb (95 to 108 N−m).

8. Install stomper arms and couplings to crankarms on both sides of bearing housing (see Stomper Arm Installation in this section). Do not fully tighten fasteners.

9. Make sure that when #1 crankarm (at pulley) is aligned with cast mark on bearing housing, all subsequent crankarm cast timing numbers are in numerical order (Fig. 19).

10.Once all stomper arm and crankarm components have been installed, fully tighten fasteners in the following order (Fig. 21). Tighten fasteners to the torque specifications identified in Figures 17 and 20:

A. Cap screw used to secure crankarms. B. Cap screws that secure top of stomper arms. C. Cap screws that secure coupling plates (Fig. 20). D. Lock nuts that secure rotolink dampers to frame

(see Rotolink Damper Installation in this section).

11.After assembly, rotate coring crankshaft by hand to make sure that no binding occurs.

12.If removed, install coring head drive belt (see Coring Head Drive Belt Installation in this section).

13.Install rear hood.

1. Crankarm screw

2. Stomper arm screw

Figure 21

3. Coupling plate screw

4. Damper lock nut

ProCore 864/1298Page 4 − 22Coring Head

This page is intentionally blank.

Coring Head

ProCore 864/1298 Page 4 − 23 Coring Head

Coring Head Drive Belt

PROCORE 864 SHOWN

1. Tinnerman nut (4 used)

2. Belt guard support

3. Dirt shield

4. Belt guard

5. Flat washer (4 used)

6. Flange head screw (4 used)

7. Flange nut

8. Flat washer

Figure 22

9. Cap screw

10. Idler pulley

11. Idler arm

12. Spring mount

13. Pulley shaft

14. Pulley support

15. Lock nut

FRONT

16. Idler nut

17. Spacer hose

18. Compression spring

19. Pulley

20. Flat washer

21. Cap screw

22. Drive belt

RIGHT

Removal (Fig. 22)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood from machine to allow access to coring head drive belt.

3. Remove pulley shield from machine (see Cover Removal in the Service and Repairs section of Chapter 3

− Chassis).

4. Remove fasteners (items 5, 6 and 7) that secure belt guard to support. Remove belt guard from machine. Flat washer (item 8) and cap screw (item 9) can remain on frame.

1. Drive pulley

2. Idler pulley

Figure 23

3. Driven pulley

4. Drive belt

ProCore 864/1298Page 4 − 24Coring Head

5. Loosen lock nut (item 15) that secures idler nut in

position on idler spring mount. Loosen idler nut (item 16) to remove idler tension on drive belt.

CAUTION

Be careful when lifting the idler pulley. The idler pulley is spring loaded and may cause personal injury.

6. Lift and hold idler pulley away from belt. Remove belt

from drive pulley. Carefully lower idler pulley.

7. Loosen and remove two (2) flange nuts and hard-

ened D washers that secure rotolink damper for #1 stomper arm (see Rotolink Damper Disassembly in this section). Lower rotolink damper from coring head frame.

8. Remove drive belt from driven pulley on coring

crankshaft.

9. Route drive belt down through coring head frame

and around lower end of #1 stomper arm to remove coring head drive belt from machine (Fig. 24 and 25).

Installation (Fig. 22)

1. Route drive belt around lower end of #1 stomper arm

and up through coring head frame (Fig. 24 and 25).

Figure 24

1. Drive belt 2. #1 stomper arm

2. Position drive belt to driven pulley on coring crank-

shaft.

3. Lift idler pulley, route drive belt under idler pulley and

install belt onto drive pulley (Fig. 23).

4. Apply tension to idler pulley by adjusting idler nut

(item 16) until compression spring length is 5.750” (145 mm). Secure idler nut location with lock nut (item 15).

5. Raise rotolink damper for #1 stomper arm to coring

head frame. Make sure that damper standoffs and bumper are on damper studs. Secure damper to coring head frame with two (2) D washers and lock nuts (see Rotolink Damper Assembly in this section).

6. Make sure that tinnerman nuts (item 1), flat washer

(item 8) and cap screw (item 9) are on frame. Position belt guard to machine. Secure belt guard to support with flange nut (item 7), two (2) flange head screws (item 6) and flat washers (item 5).

7. Install pulley shield to machine (see Cover Installa-

tion in the Service and Repairs section of Chapter 3 − Chassis).

8. Install rear hood to machine.

Figure 25

1. Drive belt 2. #1 rotolink damper

5.750”

(145 mm)

Figure 26

1. Idler pulley

2. Drive belt

3. Compression spring

4. Idler nut

5. Lock nut

Coring Head

ProCore 864/1298 Page 4 − 25 Coring Head

Coring Head Drive

PROCORE 864 SHOWN

ANTISEIZE

LUBRICANT

1. Pulley support

2. Pulley shaft

3. Bearing (2 used)

4. Bearing spacer

5. Shim washer

6. Pulley

7. Flat washer

8. Cap screw

9. Spacer tube

10. Spring mount

11. Washer

12. Cap screw

FRONT

RIGHT

210 to 230 ft−lb

(285 to 311 N−m)

Figure 27

13. Flange bushing (2 used)

14. Pivot sleeve

15. Idler arm

16. Flat washer

17. Cap screw

18. Cap screw

19. Idler pulley

20. Flat washer

21. Lock nut

22. Compression spring

23. Idler nut

24. Lock nut

25. Drive belt

26. Cap screw

27. Tinnerman nut (4 used)

28. Belt guard support

29. Dirt shield

30. Belt guard

31. Flat washer (4 used)

32. Flange head screw (6 used)

33. Spacer hose

34. Flange nut

35. Bushing (2 used)

The coring head on the ProCore 864 is driven by a single 4 grooved banded belt on the right side of the coring head. The ProCore 1298 dual coring heads are each driven by a banded belt on the outside of the coring head. The drive belt, drive pulley, belt tensioning system and other coring head drive components are similar on both the ProCore 864 and 1298.

ProCore 864/1298Page 4 − 26Coring Head

Removal (Fig. 27)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

C. As drive pulley (item 6) is being installed, place 0, 1 or 2 shims (item 5) between outer shaft bearing and drive pulley to align drive pulley with driven pulley on coring crankshaft. Pulleys should be aligned within

0.070” (1.8 mm).

2. Remove rear hood from machine.

3. Remove front cover and pulley shield from machine

(see Cover Removal in the Service and Repairs section of Chapter 3 − Chassis).

4. Remove coring head drive belt (see Coring Head

Drive Belt Removal in this section).

5. Remove driveshaft from pulley shaft (see Driveshaft

Removal in this section).

6. Remove pulley (item 6) from pulley shaft: A. Install a .375” − 16 UNC − 2B screw into one of the

threaded pulley holes leaving 1” to 2” of the screw extending from the pulley surface. Do not tighten screw with a wrench. Use a suitable pry bar between the pulley flange and screw extension to prevent the pulley and pulley shaft from rotating.

B. Remove cap screw and flat washer that secure pulley to pulley shaft.

C. If needed, the use of three (3) .375” − 16 UNC − 2B screws (see Special Tools) can be installed into threaded holes of pulley to aid in pulley removal. Tighten screws progressively and evenly until the pulley is loose on the pulley shaft.

7. Remove additional components as necessary using

Figure 27 as a guide.

D. Install a .375” − 16 UNC − 2B screw into one of the threaded pulley holes leaving 1” to 2” of the screw extending from the pulley surface. Make sure that the end of the screw does not contact pulley drive housing. Use a suitable pry bar between the pulley flange and screw extension to prevent the pulley and pulley shaft from rotating.

E. Secure drive pulley to pulley shaft with flat washer and cap screw. Torque cap screw from 210 to 230 ft− lb (285 to 311 N−m).

F. Remove screw from pulley hole.

2. Install coring head drive belt (see Coring Head Drive Belt Installation in this section). Make sure that drive belt is properly tensioned.

3. Install driveshaft to pulley shaft (see Driveshaft Installation in this section).

4. Install front cover and pulley shield to machine (see Cover Installation in the Service and Repairs section of Chapter 3 − Chassis).

5. Install rear hood to machine.

Coring Head

Installation (Fig. 27)

1. Install all removed components using Figure 27 as a

guide.

A. If pulley shaft (item 2) was removed, apply antiseize lubricant to shaft bearing surface before sliding shaft into bearing bores.

B. Apply antiseize lubricant to splines of pulley shaft (item 2) before installing pulley and driveshaft.

1. Drive pulley

2. Idler pulley

Figure 28

3. Driven pulley

4. Drive belt

ProCore 864/1298 Page 4 − 27 Coring Head

Coring Head Pivot (H−Frame)

PROCORE 1298 SHOWN

FRONT

RIGHT

1. H−frame

2. Thrust washer (4 used)

3. Pivot shaft (2 used)

4. Cap screw

5. Flange nut

6. Carriage screw

7. Rod end (LH threads) (2 used)

8. Jam nut (LH threads) (2 used)

Figure 29

9. Upper link (2 used)

10. Jam nut (2 used)

11. Rod end (2 used)

12. Lock washer (4 used)

13. Hex nut (4 used)

14. Spring cup

15. Compression spring

16. Depth control assembly

17. Carriage screw (4 used)

18. Upper link assembly

19. Flange nut (4 used)

20. Bushing (8 used)

21. Coring head frame (RH shown)

22. Subframe (RH shown)

ProCore 864/1298Page 4 − 28Coring Head

Disassembly (Fig. 29)

1. Position aerator on a firm, level surface. If attached

to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood from machine. Adjust coring

head depth to the deepest setting.

3. Remove front cover and pulley shield from machine

(see Cover Removal in the Service and Repairs section of Chapter 3 − Chassis).

4. Support the aerator to prevent the machine from

moving. NOTE: The ProCore 1298 uses one (1) compression

spring for each of its dual coring frames. The ProCore 864 uses two (2) compression springs for its single coring frame.

WARNING

THE CORING HEAD FRAME IS SPRING LOADED! To prevent possible personal injury, use compression spring tool (see Special Tools) to remove compression spring(s) before disassembling the coring head pivot.

7. Using suitable lift or hoist, raise coring head slightly using lifting eyelets on coring crankshaft as lift points (Fig. 30). Use appropriate jackstands or blocking to support the coring head to prevent it from shifting.

8. Remove upper link assemblies (item 21) from hitch frame and coring head frame.

9. Remove fasteners (items 4, 5 and 6) that secure end of pivot shafts to machine.

10.Carefully slide pivot shafts from H−frame. Locate and retrieve four (4) thrust washers (item 2) from between H−frame and machine frame.

11.Remove H−frame from machine.

12.If necessary, remove bushings (item 20) from H− frame.

5. Use compression spring tool (see Special Tools) to

remove compression spring(s) from coring head frame:

A. Install compression spring tool threaded rod through holes in each spring cup (item 1), then install washer and nut on both ends of rod.

B. Tighten upper nut on rod to compress spring (item 2).

C. With tool compressing the spring, carefully lift bottom of spring, slide it from coring head frame, lower from hitch frame and remove from machine.

D. If working on ProCore 864, repeat for second compression spring.

6. Make sure that machine is well supported with jack-

stands or blocking.

CAUTION

The ProCore 864 coring head frame assembly weighs approximately 900 pounds (408 kg). The ProCore 1298 coring head frame assembly weighs approximately 675 pounds (306 kg). Make sure that proper lift or hoist is used to support coring head frame during repairs.

ProCore 864/1298 Page 4 − 29 Coring Head

1. Bearing housing 2. Lifting eyelet

Assembly (Fig. 29)

1. If upper links were disassembled, note that link has a groove on the end that has left hand threads. Install rod ends equally to make link assembly from 8.170” to

8.230” (208 to 209 mm) long (rod center to rod center) (Fig. 31). Also, align rod ends before tightening jam nuts.

2. If bushings were removed from H−frame, press new bushings into H−frame bores. Bushings should be recessed into the H−frame at least 0.030” (0.8 mm).

IMPORTANT: When installing pivot shafts, make sure that both sides of H−frame are aligned with holes in frame before installing pivot shaft.

3. Position H−frame to hitch frame making sure that thrust washers are placed between H−frame and hitch frame. Align both sides of H−frame to pivot shaft holes in hitch frame. Slide pivot shaft through hitch frame and H−frame. Secure pivot shaft to hitch frame with cap screw and flange nut.

Figure 30

Coring Head

4. Position coring head to allow alignment of both sides of H−frame to pivot shaft holes in coring head frame. Slide pivot shaft through coring head frame and H− frame. Secure pivot shaft to coring head frame with carriage screw and flange nut.

5. Position upper link assemblies to hitch frame and coring head frame. Make sure that link assemblies (Fig.

31) have the groove installed in the same direction. Secure upper link rod ends to machine with lock washer and hex nut.

6. Install compression spring(s) to coring head frame: A. With compression spring tool (see Special T ools)

compressing the spring, position upper end of spring to hitch frame and then slide bottom of spring to coring head frame spring bracket.

B. Loosen lower nut on threaded rod to allow spring (item 2) to extend.

C. Remove compression spring tool threaded rod, washers and nuts from spring cups (item 1) and spring.

1. Rod end (RH threads)

2. Rod end (LH threads)

8.170” to 8.230” (208 to 209 mm)

Figure 31

3. Link groove

D. If working on ProCore 864, repeat for second spring.

7. Install pulley shield and front cover to machine (see

Cover Installation in the Service and Repairs section of Chapter 3 − Chassis).

8. Install rear hood to machine.

9. Adjust aerator to desired depth setting.

ProCore 864/1298Page 4 − 30Coring Head

This page is intentionally blank.

Coring Head

ProCore 864/1298 Page 4 − 31 Coring Head

Depth Control Assembly

PROCORE 1298 SHOWN

FRONT

RIGHT

1. H−frame

2. Depth control assembly

3. Flange nut (4 used)

4. Carriage screw (4 used)

Figure 32

5. Coring head frame

6. Compression spring

7. Spring cup

8. Hitch frame

9. Flange head screw (4 used)

10. Pad

11. Flange nut (4 used)

ProCore 864/1298Page 4 − 32Coring Head

Removal (Fig. 32)

Installation (Fig. 32)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove rear hood from machine.

3. Remove front cover to allow access to depth control assembly (see Cover Removal in the Service and Repairs section of Chapter 3 − Chassis).

4. Use compression spring tool (see Special Tools) to compress coring head compression spring(s) slightly. The springs do not have to be removed from machine.

A. Install compression spring tool threaded rod through holes in each spring cup (item 7), then install washer and nut on both ends of rod.

B. Tighten upper nut on rod to compress spring (item 6) until upper spring cup is approximately 1/2” (13 mm) from spring seat on hitch frame.

C. If working on ProCore 864, repeat for second compression spring.

1. Make sure that coring frame is supported in a raised position to prevent unexpected lowering of coring frame.

2. Position depth control assembly to coring frame.

3. Secure depth control assembly to coring frame with four (4) carriage screws and flange nuts.

4. Use appropriate hoist to lower coring frame so that depth control assembly is supporting coring frame.

5. Remove compression spring tool from coring head compression spring(s):

A. Loosen lower nut on threaded rod to allow spring (item 2) to extend. Make sure that upper spring cup (item 1) extends into spring seat on hitch frame.

B. Remove compression spring tool components (threaded rod, washers and nuts) from spring.

C. If working on ProCore 864, repeat for second spring.

6. Adjust aerator to desired depth setting.

CAUTION

5. Use suitable lift or hoist and lifting eyelets on coring crankshaft as lift points (Fig. 33) to raise coring head. Raise coring head so that clearance exists between depth control assembly and pad on hitch frame.

6. Use appropriate jackstands or blocking to support the coring head to prevent it from shifting or lowering.

7. Remove four (4) carriage screws and flange nuts that secure depth control assembly to coring frame.

8. Remove depth control assembly from coring frame.

7. Install front cover to machine (see Cover Installation in the Service and Repairs section of Chapter 3 − Chassis).

8. Install rear hood to machine.

Coring Head

Figure 33

1. Bearing housing 2. Lifting eyelet

ProCore 864/1298 Page 4 − 33 Coring Head

Depth Control Assembly Service

251625

1. Flange head screw

2. Flat washer

3. Depth control gage

4. Oil seal

5. Depth control hub

6. Plug

7. Oil seal

8. Shoe

9. Hairpin clip

Figure 34

10. Depth control shaft

11. Flange bushing

12. Thrust bearing

13. Thrust washer

14. Worm

15. Worm gear spacer

16. Bearing washer

17. Thrust bearing

18. Worm gear

19. Plain washer

20. Gasket

21. Cover

22. Lock plate

23. Flange head screw (6 used)

24. Key

25. Adjustment shaft

26. Decal

ProCore 864/1298Page 4 − 34Coring Head

Disassembly (Fig. 34)

1. Remove flange head screw (item 1), flat washer (item 2) and depth control gage (item 3) from top of depth control shaft.

2. Remove hairpin clip (item 9) and shoe (item 8) from bottom of depth control shaft.

3. Position worm gear assembly into depth control hub. Slide plain washer (item 19) between worm gear and control hub.

4. Place inner flange bushing (item 1 1) into depth control hub.

5. Install components onto adjustment shaft (item 25):

3. Unscrew depth control shaft (item 10) and remove from depth control hub.

4. Remove upper and lower oil seals (items 4 and 7) from depth control hub. Take care to not damage seal bores in hub. Discard seals.

5. Remove six (6) flange head screws (item 23) that secure lock plate and cover to depth control hub. Remove lock plate, cover and gasket.

6. Slide adjustment shaft assembly from depth control hub. Remove flange bushings (item 1 1), thrust washers (item 13), th r u st bear i n g s ( i t e m 1 2 ) , w o r m ( item 14 ) , k e y (item 24) and worm gear spacer (item 15) from adjustment shaft.

7. Remove plain washer (item 19) from depth control hub.

8. Slide worm gear (item 18) with two (2) bearing washers (item 16) and thrust bearing (item 17) from depth control hub. Remove bearing washers and thrust bearing from worm gear flange.

9. Clean and inspect all components. Replace all components that are worn or damaged.

Assembly (Fig. 34)

1. Apply grease to depth control components: A. Pack thrust bearings (items 12 and 17) 60% to

100% full with grease.

A. Slide outer flange bushing (item 11), worm gear spacer (item 15), thrust washer (item 13), greased thrust bearing (item 12) and second thrust washer onto shaft.

B. Place key (item 24) into shaft slot, align worm (item 14) with key and then slide greased worm onto shaft.

C. Place thrust washer (item 13), greased thrust bearing (item 12) and final thrust washer onto shaft.

6. Slide assembled adjustment shaft into inner flange bushing in depth control hub. Make sure that inner flange bushing is still properly positioned in hub bore.

7. Place gasket (item 20) and cover (item 21) onto depth control hub. Make sure that outer flange bushing (item 11) is properly positioned into cover bore. Install four (4) flange head screws that surround adjustment shaft. Do not fully tighten screws at this time.

8. Lightly oil upper and lower oil seals. Install seals into depth control hub taking care to not damage seals during installation.

9. Insert greased depth control shaft (item 10) into bottom of depth control hub and thread shaft into worm gear. Take care to not damage seals during depth control shaft installation.

10.Position lock plate (item 22) to cover and secure with two (2) flange head screws. Fully tighten all six (6) cover screws.

Coring Head

B. Fill all threads of depth control shaft (item 10) 60% to 100% full with grease.

C. Fill all gear teeth voids of worm (item 14) and worm gear (item 18) 60% to 100% full with grease.

2. Place bearing washer (item 16), greased thrust bear-

ing (item 17) and then second bearing washer onto flange of greased worm gear (item 18).

ProCore 864/1298 Page 4 − 35 Coring Head

11.Place shoe (item 8) on bottom of depth control shaft and secure with hairpin clip.

12.Position depth control gage (item 3) to top of depth control shaft and align slot in gage with tab on shaft. Secure gage to control shaft with flat washer and flange head screw.

Driveshafts

PROCORE 1298 SHOWN

ANTISEIZE

LUBRICANT

FRONT

RIGHT

70 to 80 ft−lb

(95 to 108 N−m)

70 to 80 ft−lb

(95 to 108 N−m)

ANTISEIZE

LUBRICANT

ANTISEIZE

LUBRICANT

ANTISEIZE

LUBRICANT

Figure 35

1. PTO driveshaft

2. Lock nut

3. Cap screw

4. Coring head driveshaft

5. Hitch frame

6. Gearbox

NOTE: The ProCore 1298 uses two (2) identical coring

head driveshafts (shown in Figure 35). The ProCore 864 uses one (1) coring head driveshaft.

Removal (Fig. 35)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

2. Remove front covers to allow access to driveshaft (see Cover Removal in the Service and Repairs section of Chapter 3 − Chassis).

3. Remove two (2) cap screws and lock nuts from both end yokes of driveshaft.

4. Slide driveshaft end yokes from shafts and remove driveshaft from machine.

70 to 80 ft−lb

(95 to 108 N−m)

7. RH pulley support assembly

8. LH pulley support assembly

1. End yoke

2. Cross and bearings

3. Shaft and yoke

CORING HEAD DRIVESHAFT

Figure 36

4. Grease fitting

5. Tube and yoke

6. Grease fitting

ProCore 864/1298Page 4 − 36Coring Head

5. If necessary, remove guards from PTO driveshaft

(Fig. 38):

A. Press clip end and rotate clip from guard. B. Rotate bushing to disengage bushing from

guard. C. Slide guard from driveshaft. D. Remove bushing from groove in yoke. Clean

bushing and groove.

Installation (Fig. 35)

PTO DRIVESHAFT

1. Apply antiseize lubricant to shaft surfaces.

2. If driveshaft halves were separated, note that splines

on shaft and tube have a blind spline to ensure alignment of end yokes when the driveshaft is assembled. Align blind spline in shaft and tube when assembling driveshaft halves.

3. Install guards to PTO driveshaft if removed (Fig. 38): A. Grease bushing groove in yoke and install bush-

ing into groove. B. Slide guard onto driveshaft and insert guard

openings over bushing tabs. C. Rotate bushing to engage bushing tabs and

guard. D. Secure bushing and guard by pushing the clip

into guard.

4. Position driveshaft to aerator: A. Coring head driveshaft should be installed with

slip tube yoke to gearbox (Fig. 36). B. PTO driveshaft should be installed with safety

slide lock yoke toward tractor (Fig. 37).

1. Safety slide lock yoke

2. Cross and bearings

3. Shaft and yoke

4. Outer guard

Figure 37

5. Inner guard

6. Tube and yoke

7. End yoke

Coring Head

5. Align splines of driveshaft yokes with shafts. Slide

driveshaft end yokes onto shafts.

6. Secure driveshaft end yokes to shafts with two (2)

cap screws and lock nuts. Torque lock nuts from 70 to 80 ft−lb (95 to 108 N−m).

7. Lubricate driveshaft grease fittings.

8. Install front covers to machine (see Cover Installa-

tion in the Service and Repairs section of Chapter 3 − Chassis).

Figure 38

1. Clip (locked)

2. Clip (unlocked)

3. Bushing (engaged)

4. Bushing (disengaged)

ProCore 864/1298 Page 4 − 37 Coring Head

Driveshaft Cross and Bearing Service

1. Remove driveshaft from aerator (see Driveshaft Removal in this section).

IMPORTANT: When placing yoke in vise, clamp lightly on the solid part of the yoke to prevent yoke damage. Also, the use of a vise with soft jaws is recommended.

2. Lightly clamp yoke in vise. Remove snap rings that secure bearings in each yoke. Remove yoke from vise.

IMPORTANT: Yokes must be supported when removing and installing bearings to prevent damage.

3. Use a press to remove cross and bearings from yokes:

A. Place a small socket against one bearing and a large socket against the yoke on the opposite side.

B. While supporting the large socket, apply pressure on small socket to partially push the opposite bearing into the large socket.

C. Remove yoke from press, grasp partially removed bearing and tap on yoke to completely remove the bearing.

5. Make sure that assembled joint moves without binding. Slight binding can usually be eliminated by lightly rapping the yoke lugs with a soft faced hammer. If binding continues, disassemble joint to identify source of binding.

6. If driveshaft halves were separated during cross and bearing service, note that splines on shaft and tube have a blind spline to ensure alignment of end yokes when the driveshaft is assembled. Align blind spline in shaft and tube when assembling driveshaft halves.

7. Install driveshaft to aerator (see Driveshaft Installation in this section).

D. Repeat process for remaining bearings. E. Thoroughly clean and inspect all components.

4. To install new cross and bearings: A. Apply a coating of grease to bearing bores of end

yoke and shaft yoke. Also, apply grease to bearings and seal of bearing assembly. Make sure that all bearing rollers are properly seated in bearing cage.

B. Press one bearing partially into yoke.

IMPORTANT: Take care when installing cross into bearing to avoid damaging bearing seal.

C. Carefully insert cross into bearing and yoke. D. Hold cross in alignment and press bearing in until

it hits the yoke. E. Carefully place second bearing into yoke bore

and onto cross shaft. Press bearing into yoke. F. Install snap rings to secure bearings in place.

1. End yoke

2. Cross and bearing kit

Figure 39

3. Snap ring (4 used)

4. Shaft yoke

G. Repeat procedure for other yoke. H. Grease cross until grease comes out of all four (4)

bearing cups.

ProCore 864/1298Page 4 − 38Coring Head

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Coring Head

ProCore 864/1298 Page 4 − 39 Coring Head

Gearbox

PROCORE 1298 SHOWN

FRONT

RIGHT

1. PTO driveshaft

2. Gearbox

3. Flange head screw (4 used)

4. Reducer fitting

5. Adapter

6. Tube

7. Hardline keeper

8. Lock nut

9. Cap

10. Cap screw

11. Lock nut

12. Cap screw

13. Lock nut

Figure 40

14. Relief vent

15. Coring head driveshaft

16. Pulley drive

17. O−ring

18. Hitch frame

19. O−ring

ProCore 864/1298Page 4 − 40Coring Head

Removal (Fig. 40)

1. Position aerator on a firm, level surface. If attached to tractor, disengage PTO, apply tractor parking brake, stop engine and remove key from the ignition switch.

Installation (Fig. 40)

CAUTION

2. Remove front cover from hitch frame (see Front Cover Removal in the Service and Repairs section of Chapter 3 − Chassis).

3. Drain lubricant from gearbox. NOTE: The ProCore 864 uses one (1) coring head dri-

veshaft. The ProCore 1298 has two (2) coring head driveshafts.

4. Disconnect PTO and coring head driveshaft(s) from gearbox shafts (see Driveshafts Removal in this section).

5. Disconnect drain tube from adapter on bottom of gearbox.

CAUTION

To prevent personal injury, make sure that gearbox is supported as it is removed from the machine. Gearbox weighs approximately 120 pounds (54 kg).

To prevent personal injury, make sure that gearbox is supported as it is installed to the machine. Gearbox weighs approximately 120 pounds (54 kg).

1. Position gearbox to machine hitch frame. Secure gearbox to frame with four (4) flange head screws.

2. Make sure that O−ring is positioned in groove in adapter on bottom of gearbox. Connect drain tube to adapter.

3. Connect PTO and coring head driveshaft(s) to gearbox shafts (see Driveshafts Installation in this section).

4. Fill gearbox with proper lubricant (see Operator’s Manual).

5. Install front cover to machine (see Front Cover Installation in the Service and Repairs section of Chapter 3 − Chassis).

6. Support gearbox to prevent it from shifting.

7. Remove four (4) flange head screws that secure gearbox to hitch frame.

8. Carefully remove gearbox from machine.

Coring Head

ProCore 864/1298 Page 4 − 41 Coring Head

Gearbox Service

Thread

Sealant

1. Oil seal

2. Retaining ring

3. Hard shim

4. Soft shim

5. Bearing (cup and cone)

6. Cross shaft

7. Relief vent

81 ft−lb (109 N−m)

Figure 41

8. Fitting

9. Housing

10. Oil seal

11. Plug

12. Adapter

13. Input gear and shaft

14. Bearing (cup and cone)

Thread

Sealant

15. Gasket

16. O−ring

17. Quill

18. Flange head screw (6 used)

19. Retaining shim

20. Lock nut

21. Oil seal

NOTE: The gearbox used on ProCore 864 and 1298

machines is identical.

Disassembly (Fig. 41)

1. Remove six (6) flange head screws that secure quill

assembly to gearbox housing.

NOTE: Gaskets (item 15) are used to adjust gearbox backlash. Take note of number of gaskets to assist in assembly process.

2. Pull quill assembly from gearbox housing. Remove and discard O−ring and gasket(s).

ProCore 864/1298Page 4 − 42Coring Head

3. Disassemble quill assembly:

3. Install cross shaft assembly into gearbox housing:

A. Remove oil seal (item 21) from quill housing. Discard oil seal.

B. Bend retaining tab of retaining shim and remove lock nut and shim from shaft. Discard retaining shim.

C. Remove outer bearing. Slide shaft and inner bearing from quill housing.

D. Remove inner bearing from shaft. E. Use press to remove bearing cups from quill

housing.

4. Remove oil seal (item 1) from housing to allow removal of cross shaft assembly. Discard oil seal.

5. Remove retaining ring that secures cross shaft assembly in gearbox housing.

NOTE: Soft shims (item 4) between hard shim (item 3) and outer bearing (item 5) are used to adjust cross shaft end play. Take note of number and location of shims to assist in assembly process.

6. Slide cross shaft assembly from gearbox housing. Note location of hard shim (item 3) and soft shim(s) just inside retaining ring location. Remove outer bearing cup and both bearing cones from cross shaft.

NOTE: Soft shims (item 4) between inner bearing cup and gearbox housing are used to adjust gear mesh and pattern. Take note of number of shims to assist in assembly process.

7. Remove inner bearing cup from gearbox housing. Remove soft shim(s) from between inner bearing cup location and gearbox housing. Note the number of soft shim(s).

8. Remove and discard remaining oil seal (item 10) from gearbox housing. Discard oil seal.

A. Slide cross shaft assembly into gearbox housing. NOTE: Soft shims (item 4) between hard shim and

outer bearing are used to adjust cross shaft end play. During assembly, install same number of soft shims as were removed.

B. Position outer bearing cup, soft shim(s) and hard shim (item 3) onto cross shaft. Secure cross shaft with retaining ring.

C. Check that cross shaft has from 0.001” to 0.003” (0.03 to 0.07 mm) end play. If necessary, add or remove soft shim(s) between outer bearing and hard shim to adjust end play.

4. Assemble quill assembly: A. Install bearing cups into quill housing. Make sure

that cups are fully installed to shoulder in housing. B. Install inner bearing cone fully onto shaft. C. Slide shaft into housing. D. Slide outer bearing cone onto shaft. E. Install retaining shim and then lock nut onto shaft.

Make sure that tab on retaining shim is aligned with slot in shaft.

F. Tighten lock nut until shaft has from 0.001” to

0.003” (0.03 to 0.07 mm) end play. Secure lock nut in place by bending a locking tab on retaining shim into one of the slots in the lock nut.

5. Lightly grease O−ring (item 16) and install into

groove of quill housing. NOTE: Gaskets (item 15) are used to adjust gearbox

backlash. During assembly, install same number of gasket(s) as were removed.

Coring Head

9. Thoroughly clean and inspect all gearbox components. Replace all worn or damaged parts.

Assembly (Fig. 41) NOTE: Soft shims (item 4) between inner bearing cup

and gearbox housing are used to adjust gear mesh and pattern. During assembly, install same number of soft shims as were removed.

1. Position soft shim(s) in housing and then press inner bearing cup fully into housing bore.

2. Press inner and outer bearing cones onto cross shaft. Make sure that bearings are pressed fully to shoulders on shaft.

ProCore 864/1298 Page 4 − 43 Coring Head

6. Position gasket(s) to quill housing and install hous-

ing assembly into gearbox housing. Make sure that gear teeth mesh properly with gear on cross shaft. Secure quill housing with six (6) flange head screws. Torque screws 81 ft−lbs (109 N−m).

7. Check gearbox backlash (Fig. 42): A. Clamp the output shaft of gearbox in a soft jawed

vise. B. Lightly clamp a pair of locking pliers onto the

gearbox input shaft.

C. Mount a dial indicator with a magnetic base to the vise so that the dial indicator touches the pliers

3.100” (78.7 mm) from the center of the input shaft. D. Rotate the pliers and monitor the dial indicator

reading to check gearbox backlash. Allowable backlash is from 0.006” to 0.013” (0.16 to 0.33 mm).

E. If backlash adjustment is necessary, remove gasket(s) from between quill and gearbox housing to decrease backlash. Increase backlash by installing additional gasket(s). Recheck backlash after any gasket change. Repeat process until backlash is correct.

F. Remove gearbox from vise.

8. After backlash is correct, check gear pattern to assure that proper gear mesh exists:

A. Remove quill housing assembly and coat gear teeth on cross shaft with gear mounting compound.

LOCKING PLIERS

(LIGHTLY CLAMPED)

DIAL

INDICATOR

SOFT JAWED

VISE

3.100”

(78.7 mm)

Figure 42

GEAR PATTERN REQUIREMENTS

B. Install quill housing into gearbox housing using the same number of gaskets and secure with six (6) flange head screws. Torque screws 81 ft−lbs (109 N−m).

C. Rotate the input shaft to establish a gearmesh pattern in the gear mounting compound. Rotating the input shaft 1/2 turn will allow all cross shaft gear teeth to contact input shaft gear teeth.

D. Remove quill assembly from gearbox and inspect the pattern on the gear teeth.

E. Ideal pattern should cover from 40% to 80% of the gear face width (Fig. 43). The contact area should be in the center of each tooth and extend from 20% to 50% of the gear face height. The pattern should not run off the tooth heel, toe or top.

F. If necessary, adjust the number of soft shim(s) between housing and inner bearing cone to correct gear pattern. Make sure to also check and adjust cross shaft end play.

G. Recheck backlash if any changes are made. Adjust backlash if necessary.

0.118” (3.0 mm) MINIMUM

TOE

20% to 50% of

40% to 80% of

Tooth Width

Tooth Height

0.118” (3.0 mm) MINIMUM

HEEL

0.197” (5.0 mm) MINIMUM

Figure 43

9. Apply a light coating of grease on seal lips and seal OD. Install seals into gearbox bores taking care to not damage seals during installation. Seals should be installed until they are flush with the housing.

1. Input gear and shaft

2. Cross shaft

Figure 44

3. Gasket location

4. Soft shim location

ProCore 864/1298Page 4 − 44Coring Head

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Commercial Products

Toro 09715 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision History

Reader Comments

Preface

Table Of Contents

Safety Instructions

Safety and Instruction Decals

Product Records

Maintenance

Torque Specifications

Service and Repairs

Roller

Turf Guards

Front Covers (ProCore 864)

Front Covers (ProCore 1298)

Hitch Frame (ProCore 1298)

Specifications

General Information

ProCore 864 Coring Head

ProCore 1298 Coring Head

Coring Head Adjustments

Special Tools

Service and Repairs

Rotolink Damper Assemblies

Stomper Arms

Coring Crankshaft Bearing Housings (ProCore 864)

Coring Crankshaft Bearing Housings (ProCore 1298)

Coring Head Drive Belt

Coring Head Drive

Coring Head Pivot (H−Frame)

Depth Control Assembly

Depth Control Assembly Service

Driveshafts

Driveshaft Cross and Bearing Service

Gearbox

Gearbox Service