Gravely 985112, 985111, 985103, 985113, 985104 User Manual

...
4 (1)

Professional 2-Wheel Tractor

Service Manual

Models 985103,104, 105, 107 - 115, 117

08483800 08/00 Printed in USA

TABLE OF CONTENTS

Section 1 - Introduction . . . . . . . . . . . . . . . . . . . 1-3

1.1 The Manual. . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.2 Service And Replacement Parts. . . . . . . . . 1-3

1.3 Product Registration . . . . . . . . . . . . . . . . . . 1-3

1.4 Unauthorized Replacement Parts. . . . . . . . 1-3

1.5 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.6 Technical Service Communications . . . . . . 1-3

1.7 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Section 2 - Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.1 Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2 Signal Words. . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.3 Notations. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.4 Practices And Laws . . . . . . . . . . . . . . . . . . 2-4

2.5 Maintenance And Storage . . . . . . . . . . . . . 2-4

2.6 Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.7 Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.8 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Section 3 - Specifications . . . . . . . . . . . . . . . . . 3-6

Section 4 - General Maintenance

& Adjustments . . . . . . . . . . . . . . . . . . . . . . 4-10

4.1 Controls And Features . . . . . . . . . . . . . . . 4-10

4.2 Filling The Fuel Tank. . . . . . . . . . . . . . . . . 4-10

4.3 General Lubrication . . . . . . . . . . . . . . . . . 4-11

4.4 Forward-Reverse Clutch Adjustment . . . . 4-11

4.5 Hi/Low Gear Clutch Adjustment . . . . . . . . 4-12

4.6 Steering Brake Adjustment

(Applicable Models) . . . . . . . . . . . . . . . . . 4-12

4.7 PTO Brake Adjustment . . . . . . . . . . . . . . . 4-13

4.8 Slip Clutch Adjustment . . . . . . . . . . . . . . . 4-14

Section 5 - Engine . . . . . . . . . . . . . . . . . . . . . . 5-15

5.1 Engine Troubleshooting . . . . . . . . . . . . . . 5-15

5.2 Checking Engine Oil . . . . . . . . . . . . . . . . . 5-16

5.3 Changing Oil . . . . . . . . . . . . . . . . . . . . . . . 5-16

5.4 Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . 5-16

5.5 Engine Removal And Installation . . . . . . . 5-17

5.6 Engine Maintenance . . . . . . . . . . . . . . . . . 5-17

5.7 Engine Storage . . . . . . . . . . . . . . . . . . . . . 5-17

Section 6 - Steering & Controls . . . . . . . . . . . 6-18

6.1 Handlebar Assembly. . . . . . . . . . . . . . . . . 6-18

6.2 Steering Brakes (Optional) . . . . . . . . . . . . 6-19

6.3 Adjusting Brakes . . . . . . . . . . . . . . . . . . . . 6-19

6.4 Power Take Off Control. . . . . . . . . . . . . . . 6-22

6.5 Range Shift Control (Two Speed Axle) . . . 6-22

Section 7 - Drive Train . . . . . . . . . . . . . . . . . . . 7-23

7.1 Transmission Trouble Analysis . . . . . . . . . 7-23

7.2 Clutch Adjustment. . . . . . . . . . . . . . . . . . . 7-24

7.3 Transmission Removal . . . . . . . . . . . . . . . 7-24

7.4 Forward-Reverse Clutch &

Planetary System . . . . . . . . . . . . . . . . . . . 7-24

7.5 First -Second Gear, Clutch And Planetary 7-24

7.6 Differential. . . . . . . . . . . . . . . . . . . . . . . . . 7-25

7.7 Differential Removal . . . . . . . . . . . . . . . . . 7-25

7.8 Power Take Off (PTO). . . . . . . . . . . . . . . . 7-28

Section 8 - Fuel System. . . . . . . . . . . . . . . . . . 8-29

8.1 Fuel System Troubleshooting . . . . . . . . . . 8-29

8.2 Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . 8-30

8.3 Fuel System Contamination . . . . . . . . . . . 8-30

8.4 Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . 8-30

Section 9 - Electrical . . . . . . . . . . . . . . . . . . . . 9-31

9.1 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31

9.2 Electrical Measurements. . . . . . . . . . . . . . 9-31

9.3 Safety Interlock System . . . . . . . . . . . . . . 9-32

9.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32

9.5 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35

9.6 Solenoid And Relays. . . . . . . . . . . . . . . . . 9-35

9.7 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36

9.8 Diodes And Rectifiers . . . . . . . . . . . . . . . . 9-36

9.9 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . 9-37

9.10 Continuity Diagram . . . . . . . . . . . . . . . . . 9-38

9.11 12 HP Electric Start - Kohler . . . . . . . . . . 9-39

9.12 8 HP Manual Start - Kohler . . . . . . . . . . . 9-40

9.13 8 HP Electric Start - Kohler . . . . . . . . . . . 9-41

9.14 16 HP Electric Start - Briggs . . . . . . . . . . 9-42

9.15 Robin Engines . . . . . . . . . . . . . . . . . . . . 9-43

2

SECTION 1 - INTRODUCTION

1.1 THE MANUAL

The purpose of this manual is to provide complete instructions for service, maintenance, disassembly, repair, and installation of the mechanical components for the unit.

Dealer trained service personnel should use this manual as a supplement to and reminder of the training sessions conducted by the company.

Read all information for servicing a part or system before repair work is started to avoid needless disassembly.

Operation

Before operation of the unit, carefully and completely read manuals supplied with the unit. The contents will provide you with an understanding of safety instructions and controls during normal operation and maintenance.

Safety Messages

For your safety and the safety of others always read, understand, and follow all DANGER, WARNING, and CAUTION messages found in manuals and on safety decals.

Directional Reference

All reference to left, right, front, or rear are given from the operator in the operator position and facing the direction of forward travel.

1.2 SERVICE AND REPLACEMENT PARTS

When ordering publications, replacement parts, or making service inquiries, know the Model and Serial numbers of your unit and engine.

Numbers are located on the product registration form in the unit literature package. They are printed on a serial number label, located under the hood of your unit.

1.3 PRODUCT REGISTRATION

A warranty registration card must be filled out, signed, and returned at time of purchase. This card activates the warranty. Claims meeting requirements during limited warranty period will be honored.

Specific Model and Serial Numbers are on a label located on the frame of your Tractor and on a label located on the product registration form. Record those numbers below and transfer the label from the product registration to place indicated below. Use these numbers whenever parts or service is required.

1.4 UNAUTHORIZED REPLACEMENT PARTS

Use only Gravely replacement parts. The replacement of any part on this vehicle with anything other than a Gravely authorized replacement part may adversely affect the performance, durability, or safety of this unit and may void the warranty. Gravely disclaims liability for any claims or damages, whether warranty, property damage, personal injury, or death arising out of the use of unauthorized replacement parts.

1.5 DISCLAIMER

Gravely reserves the right to discontinue, make changes to, and add improvements upon its products at any time without public notice or obligation. The descriptions and specifications contained in this manual were in effect at printing. Equipment described within this manual may be optional. Some illustrations may not be applicable to your unit.

1.6 TECHNICAL SERVICE COMMUNICATIONS

Gravely Technical Service communicates information to the field using Service Letters, Service Bulletins, Product Notices, and Campaigns. Each communication signifies a type of information and priority. The dealer is responsible to carry out the directive provided in the communication. The types of communication are:

Service Letter - General technical information for the dealer. Technical information on how to service the product and product improvements.

Service Bulletin - Notification to update products to resolve certain issues or a notification of a policy change.

Product Notices - Notification of limited product located in a certain region. This is a limited distribution to only those who received the product involved.

Campaigns - Notification of a safety related issue. All products must be updated and are tracked by the factory until all units are corrected.

1 -3

1.7 PREPARATION

Before starting any removal of parts, proper preparation is very important for efficient work. A clean work area at the start of each job will allow you to perform service repairs easily and quickly.

To reduce the incidence of misplaced tools or parts, place removed components with all attaching hardware

in the disassembly order on a clean work surface. Organization is a key part of proper reassembly.

Tools, instruments, and parts needed for the job should be gathered before work is started. Interrupting a job to locate tools or parts is a needless delay.

SECTION 2 - SAFETY

2.1 SAFETY ALERTS

Look for these symbols to point out important safety precautions. They mean:

Attention!

Personal Safety Is Involved!

Become Alert!

Obey The Message!

2.2 SIGNAL WORDS

The safety alert symbol is used in decals on the unit and with proper operation procedures in this manual. They alert you to the existence and relative degree of hazards.

Understand the safety message. It contains important information about personal safety on or near the unit.

DANGER: IMMINENTLY HAZARDOUS SITUATION! If not avoided, WILL RESULT in death or serious injury.

WARNING: POTENTIALLY HAZARDOUS SITUATION! If not avoided, COULD RESULT in death or serious injury.

CAUTION: POTENTIALLY HAZARDOUS SITUATION! If not avoided, MAY RESULT in minor or moderate injury. It may also be used to alert against unsafe practices.

2.3 NOTATIONS

NOTE: General reference information for proper operation and maintenance practices.

IMPORTANT: Specific procedures or information required to prevent damage to unit or attachment.

2.4 PRACTICES AND LAWS

Practice usual and customary safe working precautions, for the benefit of yourself and others. Understand and follow all safety messages. Be alert to

unsafe conditions and the possibility of minor, moderate, or serious injury or death. Learn applicable rules and laws in your area.

2.5 MAINTENANCE AND STORAGE

Keep the equipment in good condition. Maintain it as directed in this manual. Check all hardware at regular intervals.

Use only Gravely accessories, attachment and replacement parts.

Do not overspeed the engine. Do not override the governor.

Before making any repairs, adjustments inspections or cleaning unit disengage the PTO, turn off and remove the ignition key and wait for all motion to stop.

To reduce fire hazard and overheating, keep equipment free of grass, leaves, debris or excessive lubricants.

Worn out mufflers can result in fire or explosion and should be replaced immediately.

Never store equipment with gasoline in tank inside a building where fumes may reach an open flame or spark. Allow engine to cool before storing in any enclosure.

2.6 SAFETY RULES

Improper use of this tractor can injure people and damage the equipment. People using or servicing this tractor must read and follow the instructions in this manual.

It is important to understand that this manual and any other Gravely instruction manuals do not cover every possible danger. It is impossible for Gravely to know of all possible dangers in operating and servicing the tractor and attachments.

The purchaser must give these instructions to the people operating and maintaining this tractor. These people must use eye and foot protection.

2.7 TRAINING

Read this manual, the attachment manual and the engine manual carefully before operating unit.

2 -4

Learn the location and function of all controls.

Learn how to use the controls to stop the wheels and attachment quickly in an emergency.

Understand and follow each danger, warning, caution and instruction decal installed on this product.

Never permit children to operate the Two-Wheel Tractor. Do not allow adults to operate it without proper instruction. Safe operation of this equipment requires your complete and unimpaired attention at all times. Do not operate unit after or during the consumption of drugs or alcohol.

Keep all people and animals away from the operating area.

2.8 PREPARATION

Use caution with gasoline. Gasoline is very flammable and its vapors are explosive. Keep it in a clean, tight and approved (Red) container. Never put gasoline in the fuel tank while the engine is running or hot. Clean up spilled gasoline before starting engine. Do not fill fuel tank indoors. Never allow smoking materials, sparks or flame (match, pilot light, etc.) near mower or fuel container. Replace fuel tank cap and fuel container cap securely.

Inspect area of operation and remove all material which could be thrown by the attachment such as stones, sticks, wires and other foreign objects.

When hauling the equipment, connect the chassis to the transporting vehicle. Never connect from control levers, rods, or like items that could be damaged.

Replace all parts that become damaged or lost.

Wear hand, foot, head, ear and eye protection. Do not wear loose clothing, which might get caught in rotating parts of the unit.

Before making adjustments, cleaning, removing obstructions or servicing the tractor or attachment move the PTO to "OFF", turn the ignition switch to "OFF", remove the ignition key and wait until all moving parts completely stop.

WARNING: Always block wheels and know that jack stands or blocks used are stable, strong, or secure and will hold the weight of the unit during maintenance.

2.9 OPERATION

Be certain that all shields, guards, and interlock switches are in the correct position and operating properly.

Before starting the engine, put the PTO lever in the "OFF" position and the gear shift lever in the neutral "N" position.

Check the operation of the operator presence controls before operating the tractor. With either the PTO or the direction control lever engaged, the engine should run

only if at least one of the operator presence switches is depressed.

Do not use the equipment in the dark without adequate lighting.

Keep away from moving parts. Stay clear of the attachment whenever the engine is running.

Do not let people other than the operator near the operating equipment. Never direct disengage the attachment drive when moving the tractor to and from work areas.

Use a slow speed and engage the shift lever slowly when operating on slopes.

Travel across slopes, not up and down. Use extreme caution when changing direction on slopes. Do not operate on steep slopes.

Look for and keep away from hazards, such as dropoffs. Stay alert for holes, rocks and other hidden hazards in the area of operation.

After hitting an object, disengage the PTO, turn off and remove the ignition key and wait for all motion to stop. Check for damage. Repair any damage before restarting unit.

Look behind when operating in reverse. Look for people and hazards.

Operate only from the operator’s position, just behind the handlebars.

If there is a sudden change in the sound or vibration of the equipment, disengage the PTO, turn off and remove the ignition key, wait for all motion to stop and check for damage. Repair any damage or failure before restarting unit.

Never run the engine indoors except to move it outside. Exhaust fumes are dangerous.

Go slowly on slick surfaces. Always be sure of your footing, keep a firm grip on the handlebars and walk, never run.

Follow traffic laws when operating on or near a road.

Before leaving the operator’s position, put the PTO lever in the "OFF" position, turn off and remove ignition key. Move the shift control to first gear position.

Do not touch parts which might be hot from operation. Before attempting to maintain, adjust or service allow such parts to cool.

2 -5

SECTION 3 - SPECIFICATIONS

Model Number

985103

 

985104

985105

 

985107

 

 

 

 

 

 

 

Description

8HP Gear Drive

 

8HP Gear Drive

8HP Gear Drive

 

12 HP Gear Drive

Brakes

Optional, individual, 7" (17.8 cm) x 1.75" (4.4 cm) drum type

 

 

 

 

 

Steering

 

 

Manual, optional power steering kit available

 

 

 

 

 

 

Turning Radius

 

 

Zero (with steering kit)

 

 

 

 

 

 

 

 

Minimum Uncut Circle

Zero

 

Zero

Zero

 

Zero

 

 

 

 

 

 

 

Optional Tire Sizes

 

 

 

 

 

 

 

 

 

 

 

 

 

-Stud Tread

4" x 8", 4 ply

 

4" x 8", 4 ply

4" x 8", 4 ply

 

4" x 8", 4 ply

 

 

 

 

 

 

 

-Trac Tread

4" x 8", 4 ply

 

4" x 8", 4 ply

4" x 8", 4 ply

 

4" x 8", 4 ply

 

 

 

 

 

 

 

-Turf-Chief

18" x 6.5" x 8", 4 ply

 

18" x 6.5" x 8", 4 ply

18" x 6.5" x 8", 4 ply

 

18" x 6.5" x 8", 4 ply

 

 

 

 

 

 

 

-Turf-Saver

18" x 8.5" x 8", 4 ply

 

18" x 8.5" x 8", 4 ply

18" x 8.5" x 8", 4 ply

 

18" x 8.5" x 8", 4 ply

 

 

 

 

 

 

 

-Semi-Pneumatic

16" x 5" x 3", 4 ply

 

16" x 5" x 3", 4 ply

16" x 5" x 3", 4 ply

 

16" x 5" x 3", 4 ply

 

 

 

 

 

 

 

Tire Pressure

18 psi

 

18 psi

18 psi

 

18 psi

 

 

 

 

 

 

 

Battery

12 volt, BCI group

 

12 volt, BCI group

12 volt, BCI group

 

12 volt, BCI group

 

 

 

 

 

 

 

Engine

Kohler

 

Kohler

Kohler

 

Kohler

 

 

 

 

 

 

 

-Type

K181T

 

K181T

K181S

 

M12T (PS471525)

 

 

 

 

 

 

 

-Horsepower

8HP at 3600 RPM

 

8HP at 3600 RPM

8HP at 3600 RPM

 

12HP at 3600 RPM

 

 

 

 

 

 

 

-Number of Cylinders

One

 

One

One

 

One

 

 

 

 

 

 

 

-Displacement

18 cu. in. (305.4 cc)

 

18 cu. in. (305.4 cc)

18 cu. in. (305.4 cc)

 

29 cu. in. (476.5 cc)

 

 

 

 

 

 

 

-Fuel

Gasoline, 87 minimum

 

Gasoline, 87 minimum

Gasoline, 87 minimum

 

Gasoline, 87 minimum

 

octane

 

octane

octane

 

octane

 

 

 

 

 

 

 

-Fuel Capacity

1.25 gals. (4.7 L)

 

1.25 gals. 4.7 L)

1.25 gals. (4.7 L)

 

2.0 gals. (4.7 L)

 

 

 

 

 

 

 

-Cooling

Air

 

Air

Air

 

Air

 

 

 

 

 

 

 

-Air Filter

Dual Element with

 

Dual Element with

Dual Element with

 

Dual Element with

 

PreCleaner

 

PreCleaner

PreCleaner

 

PreCleaner

 

 

 

 

 

 

 

-Lubrication

Splash System

 

Splash System

Splash System

 

Splash System

 

 

 

 

 

 

 

-Oil Type

See Engine Manual

 

See Engine Manual

See Engine Manual

 

See Engine Manual

 

 

 

 

 

 

 

-Oil Capacity

2.5 pts. (1.2 L)

 

2.5 pts. (1.2 L)

2.5 pts. (1.2 L)

 

2.5 pts. (1.2 L)

 

 

 

 

 

 

 

-Oil Filter

N/A

 

N/A

N/A

 

Spin on oil filter

 

 

 

 

 

 

 

-Charging System

Recoil

 

Recoil

12 volt, 15 amp

 

12 volt, 15 amp

 

 

 

 

 

 

 

Transmission

 

 

 

 

 

 

 

 

 

 

 

-Type

All gear planetary transmission with fully enclosed PTO and immersion clutch

 

 

 

 

 

-Oil Type

 

 

SAE 30W API service class SF or higher

 

 

 

 

 

 

 

 

-Oil Capacity

5 qts (4.7 L)

 

5 qts (4.7 L)

5 qts (4.7 L)

 

5 qts (4.7 L)

 

 

 

 

 

 

 

-Cooling

Air

 

Air

Air

 

Air

 

 

 

 

 

 

 

-Number of Speeds

2 forward/2 reverse

 

4 forward/4 reverse

4 forward/4 reverse

 

4 forward/4 reverse

 

 

 

 

 

 

 

Speeds (with 18" tires)

 

 

 

 

 

 

 

 

 

 

 

 

 

-Forward

1st - 2.0 mph (3.2 kph)

 

1st - 1.3 mph (2.1 kph)

 

1st - 1.4 mph (2.3 kph)

 

2nd - 2.5 mph (4.0 kph)

 

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.8 mph (2.9 kph)

 

 

 

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.7 mph (4.4 kph)

 

 

 

4th - 3.4 mph (5.5 kph)

 

4th - 3.7 mph (6.0 kph)

 

 

 

 

 

 

-Reverse

1st - 1.9 mph (3.1 kph)

 

1st - 1.2 mph (2.0 kph

 

1st - 1.3 mph (2.1 kph)

 

2nd - 2.4 mph (3.9 kph)

 

2nd - 1.6 mph (2.6 kph)

 

2nd - 1.7 mph (2.7 kph)

 

 

 

3rd - 2.4 mph (3.9 kph)

 

3rd - 2.6 mph (4.2 kph)

 

 

 

4th - 3.1 mph (5.0 kph)

 

4th - 3.3 mph (5.3 kph)

 

 

 

 

 

 

 

PTO

 

 

 

 

 

 

 

 

 

 

 

 

 

-Type

Internal Slip Clutch

 

Internal Slip Clutch

Internal Slip Clutch

 

Internal Slip Clutch

 

 

 

 

 

 

 

-Drive

 

 

All gear shaft driven off high/low planetary

 

 

 

 

 

-Output Speeds

 

High - 1179 RPM, low - 888 RPM at 3300 engine RPM

 

 

 

 

 

 

Construction

 

 

Cast-iron transmission case with 7-gauge framing

 

 

 

 

 

 

 

 

3 -6

Model Number

985108

 

985109

985110

 

985111

 

 

 

 

 

 

 

Description

12HP Gear Drive

 

16HP Gear Drive

8HP Gear Drive

 

8HP Gear Drive

Brakes

Optional, individual, 7" (17.8 cm) x 1.75 (4.4 cm) drum type

 

 

 

 

 

Steering

 

 

Manual, optional power steering kit available

 

 

 

 

 

 

Turning Radius

 

 

Zero (with steering kit)

 

 

 

 

 

 

Minimum Uncut Circle

 

 

Zero

 

 

 

 

 

 

 

 

Optional Tire Sizes

 

 

 

 

 

 

 

 

 

 

 

 

 

-Stud Tread

4" x 8", 4 ply

 

4" x 8", 4 ply

4" x 8", 4 ply

 

4" x 8", 4 ply

 

 

 

 

 

 

 

-Trac Tread

4" x 8", 4 ply

 

4" x 8", 4 ply

4" x 8", 4 ply

 

4" x 8", 4 ply

 

 

 

 

 

 

 

-Turf-Chief

18" x 6.5" x 8", 4 ply

 

18" x 6.5" x 8", 4 ply

18" x 6.5" x 8", 4 ply

 

18" x 6.5" x 8", 4 ply

 

 

 

 

 

 

 

-Turf-Saver

18" x 8.5" x 8", 4 ply

 

18" x 8.5" x 8", 4 ply

18" x 8.5" x 8", 4 ply

 

18" x 8.5" x 8", 4 ply

 

 

 

 

 

 

 

-Semi-Pneumatic

16" x 5" x 3", 4 ply

 

16" x 5" x 3", 4 ply

16" x 5" x 3", 4 ply

 

16" x 5" x 3", 4 ply

 

 

 

 

 

 

 

Tire Pressure

18 psi

 

18 psi

18 psi

 

18 psi

 

 

 

 

 

 

 

Battery

12 volt, BCI group

 

12 volt, BCI group

None

 

12 volt, BCI group

 

 

 

 

 

 

 

Engine

Kohler

 

Briggs & Stratton

Kohler

 

Kohler

 

 

 

 

 

 

 

-Type

M12S (PS471529)

 

303447

PS-301058

 

PS-30159

 

 

 

 

 

 

 

-Horsepower

12HP at 3600 RPM

 

16 HP at 3600 RPM

8 HP at 3600 RPM

 

8 HP at 3600 RPM

 

 

 

 

 

 

 

-Number of Cylinders

One

 

Two

One

 

One

 

 

 

 

 

 

 

-Displacement

29 cu. in. (477 cc)

 

29.3 cu. in. (480 cc)

18 cu. in. (305.4 cc)

 

18 cu. in. (305.4 cc)

 

 

 

 

 

 

 

-Fuel

Gasoline, 87 minimum

 

Gasoline, 87 minimum

See Engine Manual

 

See Engine Manual

 

octane

 

octane

 

 

 

 

 

 

 

 

 

 

-Fuel Capacity

2.0 gals. (7.5 L)

 

1.5 gals. (5.7 L)

1.25 gals. (4.7 L)

 

1.25 gals. (4.7 L)

 

 

 

 

 

 

 

-Cooling

Air

 

Air

Air

 

Air

 

 

 

 

 

 

 

-Air Filter

Dual Element with

 

Dual Element with

Dual Element with

 

Dual Element with

 

PreCleaner

 

PreCleaner

PreCleaner

 

PreCleaner

 

 

 

 

 

 

 

-Lubrication

Splash System

 

Full pressure pump with

Splash System

 

Splash System

 

 

 

oil filter

 

 

 

 

 

 

 

 

 

 

-Oil Type

See Engine Manual

 

See Engine Manual

See Engine Manual

 

See Engine Manual

 

 

 

 

 

 

 

-Oil Capacity

2.5 pts. (1.2 L)

 

3.0 pts. (1.4 L)

2.5 pts. (1.2 L)

 

2.5 pts. (1.2 L)

 

 

 

 

 

 

 

-Oil Filter

Spin on oil filter

 

Spin on oil filter

Spin on oil filter

 

Spin on oil filter

 

 

 

 

 

 

 

-Charging System

12 volt, 15 amp

 

12 volt, 16 amp

Recoil

 

12 volt, 15 amp

 

 

 

 

 

 

 

Transmission

 

 

 

 

 

 

 

 

 

 

 

-Type

All gear planetary transmission with fully enclosed PTO and immersion clutch

 

 

 

 

 

-Oil Type

 

 

SAE 30W API service class SF or higher

 

 

 

 

 

 

 

 

-Oil Capacity

5 qts (4.7 L)

 

5 qts (4.7 L)

5 qts (4.7 L)

 

5 qts (4.7 L)

 

 

 

 

 

 

 

-Cooling

Air

 

Air

Air

 

Air

 

 

 

 

 

 

 

-Number of Speeds

2 forward/2 reverse

 

4 forward/4 reverse

4 forward/4 reverse

 

4 forward/4 reverse

 

 

 

 

 

 

 

Speeds

 

 

 

 

 

 

 

 

 

 

 

 

 

-Forward

1st - 1.4 mph (2.3 kph)

 

1st - 1.4 mph (2.3 kph)

1st - 1.4 mph (2.3 kph)

 

1st - 1.4 mph (2.3 kph)

 

2nd - 1.8 mph (2.9 kph)

 

2nd - 1.8 mph (2.9 kph)

2nd - 1.8 mph (2.9 kph)

 

2nd - 1.8 mph (2.9 kph)

 

3rd - 2.7 mph (4.4 kph)

 

3rd - 2.7 mph (4.4 kph)

3rd - 2.7 mph (4.4 kph)

 

3rd - 2.7 mph (4.4 kph)

 

4th - 3.7 mph (6.0 kph)

 

4th - 3.7 mph (6.0 kph)

4th - 3.7 mph (6.0 kph)

 

4th - 3.7 mph (6.0 kph)

 

 

 

 

 

 

 

-Reverse

1st - 1.3 mph (2.1 kph)

 

1st - 1.3 mph (2.1 kph)

1st - 1.3 mph (2.1 kph)

 

1st - 1.3 mph (2.1 kph)

 

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.7 mph (2.7 kph)

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.7 mph (2.7 kph)

 

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.6 mph (4.2 kph)

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.6 mph (4.2 kph)

 

4th - 3.3 mph (5.3 kph)

 

4th - 3.3 mph (5.3 kph)

4th - 3.3 mph (5.3 kph)

 

4th - 3.3 mph (5.3 kph)

 

 

 

 

 

 

 

PTO

 

 

 

 

 

 

 

 

 

 

 

 

 

-Type

Internal Slip Clutch

 

Internal Slip Clutch

Internal Slip Clutch

 

Internal Slip Clutch

 

 

 

 

 

 

 

-Drive

All gear shaft driven off

 

All gear shaft driven off

All gear shaft driven off

 

All gear shaft driven off

 

high/low planetary

 

high/low planetary

high/low planetary

 

high/low planetary

 

 

 

 

 

 

 

Output Speeds

 

High - 1179 RPM, low - 888 RPM at 3300 engine RPM

 

 

 

 

 

 

Construction

 

 

Cast-iron transmission case with 7-gauge framing

 

 

 

 

 

 

 

 

3 -7

Model Number

985112

 

985113

 

985114

 

985115

 

 

 

 

 

 

 

 

Description

12 HP

 

12 HP

 

16 HP

 

8.5 HP

 

Gear Drive

 

Gear Drive

 

Gear Drive

 

Gear Drive

 

 

 

 

 

 

 

 

Brakes

 

 

 

 

7 x 1.75" Drum Type

 

N/A

 

 

 

 

 

 

 

Steering

 

 

Manual, optional power steering kit available

 

 

 

 

 

 

Turning Radius

 

 

Zero (with steering kit)

 

 

 

 

 

 

 

Minimum Uncut Circle

 

 

 

Zero

 

 

 

 

 

 

 

 

 

Optional Tire Sizes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-Stud Tread

4.00-8

 

4.00-8

 

4.00-8

 

4.00-8

 

 

 

 

 

 

 

 

-Trac Tread

4.00-8

 

4.00-8

 

4.00-8

 

4.00-8

 

 

 

 

 

 

 

 

-Turf-Chief

18" x 6.50"-8"

 

18" x 6.50"-8"

 

18" x 6.50"-8"

 

18" x 6.50"-8"

 

 

 

 

 

 

 

 

-Turf-Saver

18" x 8.50"-8"

 

18" x 8.50"-8"

 

18" x 8.50"-8"

 

18" x 8.50"-8"

 

 

 

 

 

 

 

 

-Semi-Pneumatic

N/A

 

N/A

 

16" x 5" x 3"

 

16" x 5" x 3"

 

 

 

 

 

 

 

 

Tire Pressure

18 psi (124 Kn/m2)

 

18 psi (124 Kn/m2)

 

See Tire Sidewall

 

See Tire Sidewall

 

 

 

 

 

 

 

 

Battery

12V BCI Group

 

12V BCI Group

 

12V BCI Group

 

12V BCI Group

 

 

 

 

 

 

 

 

Engine

Kohler

 

Kohler

 

Briggs & Stratton

 

Robin

 

 

 

 

 

 

 

 

-Type

PS-471529

 

PS-471529

 

303447

 

EH252-0225T

 

 

 

 

 

 

 

 

-Horsepower

12 HP

 

12 HP

 

16 HP

 

8.5 HP

 

 

 

 

 

 

 

 

-Number of Cylinders

One

 

One

 

Two

 

One

 

 

 

 

 

 

 

 

-Displacement

 

 

 

 

29.3 cu. in. (480 cc)

 

15.31 cu. in. (251 cc)

 

 

 

 

 

 

 

 

-Fuel

See Engine Manual

 

See Engine Manual

 

Auto Gasoline

 

Auto Gasoline

 

 

 

 

 

 

 

 

-Fuel Capacity

2.0 gals. (7.5 L)

 

2.0 gals. (7.5 L)

 

1.5 gals. (5.7 L)

 

1.5 gals. (5.7 L)

 

 

 

 

 

 

 

 

-Cooling

Air

 

Air

 

Air

 

Air

 

 

 

 

 

 

 

 

-Air Filter

Dual Element with

 

Dual Element with

 

Dual Element with

 

Dual Element with

 

PreCleaner

 

PreCleaner

 

PreCleaner

 

PreCleaner

 

 

 

 

 

 

 

 

-Lubrication

Splash Type

 

Splash Type

 

Pump w/oil filter

 

Splash Type

 

 

 

 

 

 

 

 

-Oil Type

See Engine Manual

 

See Engine Manual

 

See Engine Manual

 

SAE 20#, 30# 10W-30

 

 

 

 

 

 

 

 

-Oil Capacity

2.5 pts. (1.2 L)

 

2.5 pts. (1.2 L)

 

3.0 pts. (1.4 L)

 

2.1 pts. (1.0 L)

 

 

 

 

 

 

 

 

-Oil Filter

Spin on oil filter

 

Spin on oil filter

 

Spin on oil filter

 

Spin on oil filter

 

 

 

 

 

 

 

 

-Charging System

12 volt, 15 amp

 

12 volt, 15 amp

 

12 volt, 16 amp

 

13 volt, 11.5 amp

 

 

 

 

 

 

 

 

Transmission

 

 

 

 

 

 

 

 

 

 

 

 

-Type

All gear transmission w/fully enclosed PTO and immersion clutch

 

 

 

 

 

-Oil Type

 

 

SAE 30W API service class SF or higher

 

 

 

 

 

 

 

 

 

-Oil Capacity

5 qts. (4.7 L)

 

5 qts. (4.7 L)

 

5 qts. (4.7 L)

 

5 qts. (4.7 L)

 

 

 

 

 

 

 

 

-Cooling

Air

 

Air

 

Air

 

Air

 

 

 

 

 

 

 

 

-Number of Speeds

4 forward/4 reverse

 

4 forward/4 reverse

 

4 forward/4 reverse

 

4 forward/4 reverse

 

 

 

 

 

 

 

 

-Direction Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speeds (with 18" tires)

 

 

 

 

 

 

(with 14" tires)

 

 

 

 

 

 

 

 

-Forward

1st - 1.4 mph (2.3 kph)

 

1st - 1.4 mph (2.3 kph)

 

1st - 1.4 mph (2.3 kph)

 

1st - 1.3 mph (2.1 kph)

 

2nd - 1.8 mph (2.9 kph)

 

2nd - 1.8 mph (2.9 kph)

 

2nd - 1.8 mph (2.9 kph)

 

2nd - 1.7 mph (2.7 kph)

 

3rd - 2.7 mph (4.4 kph)

 

3rd - 2.7 mph (4.4 kph)

 

3rd - 2.7 mph (4.4 kph)

 

3rd - 2.6 mph (4.2 kph)

 

4th - 3.7 mph (6.0 kph)

 

4th - 3.7 mph (6.0 kph)

 

4th - 3.7 mph (6.0 kph)

 

4th - 3.4 mph (5.5 kph)

 

 

 

 

 

 

 

 

-Reverse

1st - 1.3 mph (2.1 kph)

 

1st - 1.3 mph (2.1 kph)

 

1st - 1.3 mph (2.1 kph)

 

1st - 1.3 mph (2.1 kph)

 

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.7 mph (2.7 kph)

 

2nd - 1.7 mph (2.7 kph)

 

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.6 mph (4.2 kph)

 

3rd - 2.6 mph (4.2 kph)

 

4th - 3.3 mph (5.3 kph)

 

4th - 3.3 mph (5.3 kph)

 

4th - 3.3 mph (5.3 kph)

 

4th - 3.3 mph (5.3 kph)

 

 

 

 

 

 

 

 

PTO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-Type

Internal Slip Clutch

 

Internal Slip Clutch

 

Internal Slip Clutch

 

Internal Slip Clutch

 

 

 

 

 

 

 

 

-Drive

All gear shaft driven off

 

All gear shaft driven off

 

All gear shaft driven off

 

All gear shaft driven off

 

high/low planetary

 

high/low planetary

 

high/low planetary

 

high/low planetary

 

 

 

 

 

 

 

-Output Speeds

 

High - 1179 RPM, low - 888 RPM at 3300 engine RPM

 

 

 

 

 

 

Construction

 

 

Cast-iron transmission case with 7-gauge framing

 

 

 

 

 

 

 

 

 

3 -8

Model Number

985117

 

 

 

 

 

 

 

 

Description

13.5 HP Gear Drive

 

 

 

Brakes

7 x 1.75" Drum Type

 

 

 

 

 

 

 

 

Steering

Manual, optional power

 

 

 

 

steering kit available

 

 

 

 

 

 

 

 

Turning Radius

Zero (with steering kit)

 

 

 

 

 

 

 

 

Minimum Uncut Circle

Zero

 

 

 

 

 

 

 

 

Optional Tire Sizes

 

 

 

 

 

 

 

 

 

-Stud Tread

4.00"-8"

 

 

 

 

 

 

 

 

-Trac Tread

4.00"-8"

 

 

 

 

 

 

 

 

-Turf-Chief

18" x 6.50"-8"

 

 

 

 

 

 

 

 

-Turf-Saver

18" x 8.50"-8"

 

 

 

 

 

 

 

 

-Semi-Pneumatic

16" x 5" x 3"

 

 

 

 

 

 

 

 

Tire Pressure

See Tire Sidewall

 

 

 

 

 

 

 

 

Battery

12V BCI Group

 

 

 

 

 

 

 

 

Engine

Robin

 

 

 

 

 

 

 

 

-Type

EH410-0226T

 

 

 

 

 

 

 

 

-Horsepower

13.5 HP

 

 

 

 

 

 

 

 

-Number of Cylinders

One

 

 

 

 

 

 

 

 

-Displacement

24.67 cu. in. (440 cc)

 

 

 

 

 

 

 

 

-Fuel

Auto gasoline

 

 

 

 

 

 

 

 

-Fuel Capacity

1.5 gal. (5.7 L)

 

 

 

 

 

 

 

 

-Cooling

Air

 

 

 

 

 

 

 

 

-Air Filter

Dual element

 

 

 

 

 

 

 

 

-Lubrication

Splash Type

 

 

 

 

 

 

 

 

-Oil Type

See Engine Manual

 

 

 

 

 

 

 

 

-Oil Capacity

5 qts. (4.7 L)

 

 

 

 

 

 

 

 

-Oil Filter

Spin on filter

 

 

 

 

 

 

 

 

-Charging System

12 volt, 12.5 amp

 

 

 

 

 

 

 

 

Transmission

 

 

 

 

 

 

 

 

 

-Type

Gear transmission

 

 

 

 

 

 

 

 

-Oil Type

SAE 30W API service

 

 

 

 

class SF or higher

 

 

 

 

 

 

 

 

-Oil Capacity

5 qts. (4.7 L)

 

 

 

 

 

 

 

 

-Cooling

Air

 

 

 

 

 

 

 

 

-Number of Speeds

4 forward/4 reverse

 

 

 

 

 

 

 

 

-Direction Control

 

 

 

 

 

 

 

 

 

Speeds (with 18" tires)

 

 

 

 

 

 

 

 

 

-Forward

1st - 1.4 mph (2.3 kph)

 

 

 

 

2nd - 1.8 mph (2.9 kph)

 

 

 

 

3rd - 2.7 mph (4.4 kph)

 

 

 

 

4th - 3.7 mph (6.0 kph)

 

 

 

 

 

 

 

 

-Reverse

1st - 1.3 mph (2.1 kph)

 

 

 

 

2nd - 1.7 mph (2.7 kph)

 

 

 

 

3rd - 2.6 mph (4.2 kph)

 

 

 

 

4th - 3.3 mph (5.3 kph)

 

 

 

 

 

 

 

 

PTO

 

 

 

 

 

 

 

 

 

-Type

Internal Slip Clutch

 

 

 

 

 

 

 

 

-Drive

All gear shaft driven off

 

 

 

 

high/low planetary

 

 

 

 

 

 

 

 

-Output Speeds

High - 1179 RPM,

 

 

 

 

Low - 888 RPM at 3300

 

 

 

 

engine RPM

 

 

 

 

 

 

 

 

Construction

Cast-iron transmission

 

 

 

 

case with 7-gauge

 

 

 

 

framing

 

 

 

 

 

 

 

 

3 -9

SECTION 4 - GENERAL MAINTENANCE & ADJUSTMENTS

4.1 CONTROLS AND FEATURES

 

 

 

1

 

 

 

2

 

 

 

4

7

 

 

 

 

 

 

 

 

10

 

 

3

 

15

 

 

9

 

 

 

 

 

 

12

4

 

6

 

13

 

 

 

 

 

 

 

5

 

 

 

 

11

 

 

 

 

14

 

 

4

 

8

 

 

 

 

 

 

 

 

 

OH0160

1.

Direction Control Lever

8.

Kick Stand

 

2.

Steering Brake Handlebar (Optional)

9.

Throttle Control

 

3.

Gear Shift Lever (Hi/Low Gear)

10.

Hour meter

 

4.

Operator Presence Control

11.

Brake Handle Cross Bar

 

5.

Choke Control Knob (Models with Briggs & Stratton

12.

Range Shift Handle (Two Speed Axle)

 

 

Engines)

13.

Parking Brake Handle (Optional on 8.5 HP)

6.

PTO Control

14.

Instruction Plate

 

7.

Ignition Switch

15.

Choke Lever (Models with Robin Engines)

 

 

16.

Choke Control Knob (Models with Briggs & Stratton

Figure 1

4.2 FILLING THE FUEL TANK

WARNING: Use caution with fuel. Fuel is very flammable. Keep fuel in a clean and tight container. Keep fuel away from fire or heat. Never put fuel in the fuel tank while the engine is running or hot. Clean up any spilled fuel before starting engine.

Add fuel to the fuel tank as needed. See your engine manual for the correct type and grade of fuel.

Put the unit in an open area. Stop the engine and lock the brake. Clean the fuel cap and the area around the fuel cap to prevent dirt from entering the fuel tank.

Remove the cap from the fuel tank. Fill the fuel tank. Be careful not to spill the fuel. Install the cap on the fuel tank and tighten. Clean up any spilled fuel before starting the engine.

4 -10

4.3 GENERAL LUBRICATION

Control Linkage Lubrication

Every 25 hours of operation put a drop of engine oil on the pivots of the throttle lever, the direction control lever, the gear shift lever, the PTO control, and range shift handle.

NOTE: There are no grease fittings on the tractor.

Transmission

Capacity: 5 U.S. Quarts (4.7 liters)

Grade: SAE 30W API service class SF or higher

Viscosity: Summer: SAE 30W or SAE 10W-30

Winter: (32oF or below) SAE 10W or

SAE 10W-30

• After every 100 hours of operation, check the level of the lubricant in the transmission. Never operate the tractor when the transmission oil level is below the "LOW’ mark on the dipstick.

• Stop the engine and raise the hood. Make sure that the tractor is level. Clean the dipstick tube and the dipstick (Figure 2). Remove the dipstick, wipe it with a clean cloth or towel and put it back in the tube. Pull the dipstick out again and look at the oil.

• If the oil level is below the low mark on the dipstick, clean the area around the filler plug and remove the filler plug. Add new clean lubricant until the dipstick indicates that the oil level is correct. See specification. Install the filler plug and dipstick.

1

2

3

 

1.Oil Filler Plug

2.Dipstick

3.Dipstick Tube

Figure 2

OH0230

CAUTION: Before performing any service or adjustments:

Turn PTO switch "OFF".

Park mower on a hard, flat, level surface.

Place steering control levers in neutral lock (fully outward) position.

Set parking brake.

Turn ignition switch "OFF" and remove key.

Wait for all moving parts to stop.

4.4FORWARD-REVERSE CLUTCH ADJUSTMENT

After 25 hours of operation, check the adjustment of the forward-reverse clutch.

WARNING: Stop the engine before adjusting the forward-reverse clutch.

The reverse clutch is adjusted correctly when the direction control lever stops 15 degrees past vertical to the rear. The lever should return to neutral position from reverse when adjusted correctly.

To adjust the reverse clutch, loosen the control extension rod jam nuts on the end of the fwd-rev control rod. Adjust the rear nut so that the direction control lever stops 15 degrees past vertical to the rear. Hold the rear nut and jam with the forward nut (Figure 3).

The forward clutch is adjusted correctly when the direction control lever is in the full forward position and the large spring has a coil clearance of .010" (.254 mm).

4 -11

 

2

 

7

1

7

4

5

7

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

3

 

 

1

7

 

 

9

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

1.

Jam Nuts

 

 

7.

Adjusting

 

 

 

2.

Fwd-Rev Control Rod

 

nuts

 

 

 

 

3.

Control Extension Rod

8.

Fwd-Rev Lever

 

 

4.

Fwd-Rev Neutral

 

 

Assembly

 

 

 

 

Spring

 

 

9.

Adjustment Bracket

 

5.

Large Spring

 

 

10.

Cam Lever Arm

 

 

6.

Brake Rod Assembly

 

 

 

 

 

 

 

 

 

Figure 3

 

 

 

 

OH0181

To adjust the forward clutch, put the direction control in the forward position. Loosen the control extension rod rear set of jam nuts on the fwd-rev control rod. Adjust the forward nut until the large spring coils are .010" (.254mm) apart. Hold the forward nut and jam with the rear nut.

4.5 HI/LOW GEAR CLUTCH ADJUSTMENT

After every 25 hours of operation, check the adjustment of the gear clutch.

WARNING: Stop the engine before adjusting the gear clutch.

The clutch is adjusted correctly when the gear shift lever is in the "HIGH" or "LOW" position and the spring coils are .010" (.254 mm) apart.

To adjust the "HIGH" clutch, loosen and separate the hi-low control rod jam nuts on the rear of the control extension rod. Put the gear shift lever in the "HIGH" position. Adjust the nut (front) near the spring until the spring coils are .010" (.254 mm) apart. Move the gear shift lever to the "NEUTRAL" position. Hold the nut adjusted to the spring and jam with the other (rear) nut (Figure 4).

To adjust the "LOW" clutch, loosen and separate the hi-lo control rod jam nuts on the end of the control extension rod. Put the gear shift lever in the "LOW" position. Adjust the nut (rear) near the spring until the spring coils are 0.10" (.254 mm) apart. Move the gear shift lever to the "NEUTRAL" position. Hold the nut adjusted to the spring and jam with the other (front) nut.

4.6 STEERING BRAKE ADJUSTMENT (APPLICABLE MODELS)

Park the unit in a level area. Put the parking brake handle in the "OFF" (down) position. Loosen the jam nuts on the right and left brake rod assemblies (Figures 2 & 3). Turn the adjusting nuts until the brake handle cross bar is parallel with the instrument panel (Figure 1).

Move the brake handlebar all the way to the right and measure the distance from the right end edge of the brake handle cross bar to the right side of the instrument panel. Move the brake handlebar all the way to the left and make the same measurement on the left.

Adjust the nuts until the difference between the two measurements is 1/2" to 3/4" (13 to 19 mm). Turn both adjusting nuts the same amount, clockwise to increase the measurement difference or counterclockwise to decrease the measurement difference. Tighten the jam nuts.

Loosen the jam nuts below the compression spring (Figure 4) on the right side of the tractor and adjust until one has the desired tension for the right brake. Tighten the jam nuts.

IMPORTANT: Replace brake shoes before lining is worn to rivet heads.

If correct braking action cannot be achieved after performing the above procedures, do the following:

1.Loosen the 5/16-24 nut and bolt which fastens cam lever arm to brake cam.

2.Remove cam lever arm from the brake cam. Rotate the cam lever arm one spine to the rear and put back on brake cam. Tighten nut and bolt.

4 -12

Gravely 985112, 985111, 985103, 985113, 985104 User Manual

3

2

1

2

1

9

7

1

2

1

 

 

5

6

8

2

4

1.

Adjusting Nuts

4.

Pivot Plate

7.

Large Spring

2.

Jam Nuts

5.

Brake Rod Assembly

8.

Hi-Lo Lever Assembly

3.

Adjustment Bracket

6.

Hi-Lo Control Rod

9.

Control Extension Rod

Figure 4

OH0191

4.7 PTO BRAKE ADJUSTMENT

Adjust the PTO brake after every 100 hours of operation.

WARNING: Stop the engine before adjusting the PTO brake.

Remove the attachment and lower the rear of the tractor to the ground. Carefully clean the front of the transmission. Remove the quick hitch studs from the transmission and remove the quick hitch casting and PTO brake assembly (Figure 5).

NOTE: The attachment gasket must be replaced if damaged.

Tighten all PTO brake bolts until the springs are solid. Back all bolts up 1/2 turn (Figure 5).

2

1

3

1.

PTO Brake Bolts

3. PTO Shaft

 

2.

Springs

 

 

 

 

Figure 5

OH0210

NOTE: Do not tighten the bolts in a circular sequence, by tightening the bolt next to one which was just tightened. The bolts should be tightened in a cross sequence, by tightening one bolt, then tightening the bolt which is across from it on the plate. Continue tightening the bolts in this sequence until all the bolts are tightened.

1

2

2

2

2

1.Quick Hitch Adapter

2.Quick Hitch Stud

Figure 6

OH0200

Make sure the trunnion block is on the shipper shaft and held in place by the dog. The dog should rest on the spiral teeth of the clutch dog plate. Install the gasket.

Align the splines on the quick hitch shaft with those in the dog. Slide the quick hitch casting and PTO brake assembly back into the place on the front of the transmission. Install the quick hitch studs and tighten.

4 -13

4.8 SLIP CLUTCH ADJUSTMENT

Adjust the slip clutch after every 100 hours of operation.

WARNING: Stop the engine before adjusting the slip clutch.

Remove the attachment and lower the rear of the tractor to the ground. Carefully clean the front of the transmission. Remove the quick hitch studs from the transmission and remove the quick hitch PTO assembly and PTO brake assembly (Figures 5 & 6).

NOTE: The attachment gasket must be replaced if damaged.

 

 

19

20

 

 

 

17

 

 

18

16

 

 

 

 

 

15

 

 

 

4

 

 

14

1

 

 

13

2

 

 

12

3

 

 

11

2

 

 

10

5

7

 

6

 

 

 

 

 

9

 

 

 

8

 

 

1.

Back Plate

11.Drive Plate

 

2.

Brake Disc

12.Friction Washer

3.

Dog Plate Brake

13.Back Plate

 

4.

Trunnion Block

14.Pinion Shaft

 

5.

Seal

15.Shipper Shaft

 

6.

Quick Hitch Shaft

16.Shipper Shaft Gasket

7.

Quick Hitch Casting

17.Shipper Shaft Body

8.

Dog

18.Shipper Shaft

 

9.

Friction Washer

19.Set Screw

 

10.Dog Plate

20.Roll Pin

 

 

Figure 7

 

Remove the dog and trunnion block. Disconnect the wiring harness from the PTO brake interlock switch and remove the shifter parts. Slide the shipper shaft assembly through the top of the advance casting. Slide the clutch assembly and pinion shaft out of the transmission. Remove the retaining ring and slide the clutch assembly off of the pinion shaft. Turn all of the jam nuts counterclockwise to loosen.

Torque bolts in stages using the pattern shown in Figure 8:

1.Tighten bolts down until the spring starts to compress.

2.

Tighten bolts to 80-85 in-lbs (9-9.6 Nm).

 

3.

Tighten nuts to 165-170 in-lbs (18.6-19.2 Nm).

 

4.

Finish tightening the nuts to 100-150 ft-lbs

 

 

(136-203 Nm).

 

 

6

 

 

1

 

 

3

 

 

 

4

 

2

 

 

5

 

 

Figure 8

OH0220

NOTE: Do not tighten the bolts in a circular sequence, that is, by tightening the bolt next to one which was just tightened. The bolts should be tightened in a cross sequence, that is, by tightening one bolt, then tightening the bolt which is across from it on the plate. Continue tightening the bolts in this sequence until all the bolts are tightened. (Figure 8)

Slide the clutch assembly back onto the pinion shaft, install the retaining ring and slide the pinion shaft completely into the transmission. Install the shipper shaft and other parts that were removed previously. Make sure the trunnion block is on the shipper shaft and held in place by the dog. The dog should rest on the spiral teeth of the clutch dog plate. Install the gasket. Align the splines on the quick hitch shaft with those in the dog. Slide the quick hitch casting and PTO brake assembly back into place on the front of the transmission. Install the quick hitch studs and tighten.

4 -14

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