Bush Hog 3227 QT User Manual

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SECTION IV MAINTENANCE

4-1MAINTENANCE CHECK LIST

Perform scheduled maintenance as outlined below. Lower machine to ground, turn off tractor, and set parking brake before doing maintenance inspections or work. All bolts should be torqued as recommended in torque chart unless otherwise indicated.

WARNING

THE LOADER CAN FALL FROM HYDRAULIC SYSTEM FAILURE. TO AVOID SERIOUS INJURY OR DEATH, SECURELY SUPPORT LOADER BEFORE WORKING UNDERNEATH.

BEFORE EACH USE

1.Inspect hydraulic lines and fittings for wear or leaks. Repair or replace if needed.

2.Inspect all pivot pins for wear. Make certain clevis pins and cotter pins are installed to retain each pivot pin.

3.Check all bolts for tightness.

4.Perform BEFORE EACH USE lubrication per paragraph 4-2.

5.During operation, listen for abnormal sounds which might indicate loose parts or other damage.

AFTER EACH USE

1.Clean all debris from machine, especially cylinder rods and affixed safety decals. Replace any missing or illegible decals.

2.Inspect loader for worn or damaged components. Repair or replace before next use. Any replacement components installed during repair shall include the components current safety decals specified by the manufacturer to be affixed to the component.

3.Store loader in a dry place.

4-2LUBRICATION (Figure4-1)

NOTE

The multi-purposegrease referenced in this section is an NLGI grade 2 type grease.

BEFORE EACH USE

1.Boom Pivot Pins - Apply multi-purposegrease to each fitting (1 fitting each side)

2.Boom Cylinders - Apply multi-purposegrease to each fitting (2 fittings each cylinder)

3.Bucket Cylinders - Apply multi-purposegrease to each fitting (2 fittings each cylinder)

4.Bucket Pivot Pin - Apply multi-purposegrease to each fitting (1 fitting each side)

5.Hydraulic Oil - Cycle boom and bucket cylinders 2 or 3 times before each use, then check hydraulic oil level in tractor reservoir.

CAUTION

USE A PIECE OF CARDBOARD OR WOOD RATHER THAN HANDS AND WEAR EYE PROTECTION WHEN SEARCHING FOR HYDRAULIC LEAKS. ESCAPING HYDRAULIC OIL UNDER PRESSURE CAN PENETRATE SKIN. IF OIL IS INJECTED INTO SKIN, IT MUST BE SURGICALLY REMOVED WITHIN A FEW HOURS BY A DOCTOR OR GANGRENE MAY RESULT.

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Figure 4-1Lubrication Points

À

Â

Á

Ä

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4-3HYDRAULIC SYSTEM PRESSURE REQUIREMENTS

A tractor hydraulic system pressure setting of 2500 psi is recommended for maximum efficiency and service. Do not exceed 3000 psi as this will damage components possibly causing serious injury.

The Bush Hog control valve is pre-setat the factory and should not be adjusted.

4-4TROUBLESHOOTING

Troubleshooting procedures are listed in Table 4-1.If the problem cannot be solved or replacement parts are necessary, contact your authorized Bush Hog dealer. Please have ready your machine name, model number, serial number, purchase date and exact cause or description of problem.

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TABLE 4-1TROUBLESHOOTING PROCEDURES

 

PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

Loader slow and/or will not dump.

Hydraulic oil to heavy.

Change to proper oil.

 

 

 

Oil filter plugged.

Clean or replace filter.

 

 

 

Hydraulic pump worn.

Repair or replace pump.

 

 

 

Oil line restricted or leaking.

Check all hoses and tubes for leaks,

 

 

 

 

damage or restrictions. Replace

 

 

 

 

damaged or restricted hoses or tube lines.

 

 

 

Quick couplers not properly connected.

Check connection - Replace if necessary.

 

 

 

Control valve does not shift properly.

Inspect clean, repair or replace valve.

 

 

 

Air in hydraulic system.

Cycle lift cylinders and bucket cylinders

 

 

 

 

several times to free system of air.

 

 

 

Cylinder leaks internally.

Replace seals.

 

 

 

Faulty valve.

Repair or replace valve.

 

 

 

 

 

 

 

Loader chatters or vibrates when

Air in hydraulic system.

Cycle lift cylinders and bucket cylinders.

 

 

raising or lowering.

Oil level too low.

Add oil as required.

 

 

 

 

 

 

 

 

 

 

Oil leaks.

Damaged fittings or hoses.

Replace damaged parts.

 

 

 

Loose connections.

Tighten fittings.

 

 

 

Worn or damaged O-ringor

Install a seal repair kit.

 

 

 

wiper seal in cylinder rod end.

 

 

 

 

Worn or damaged O-ringsin

Install an O-ringrepair kit.

 

 

 

valve.

 

 

 

Insufficient lift capacity.

Load is greater

Check loader specifications.

 

 

 

than boom lift capacity.

Check tractor system.

 

 

 

Internal boom cylinder leakage.

Replace any worn parts and install a seal

 

 

 

 

repair kit.

 

 

 

Improper hydraulic valve

Repair or replace valve.

 

 

 

operation.

 

 

 

 

 

 

 

 

Slow leakdown.

Worn control valve.

Have authorized Bush Hog dealer replace

 

 

 

 

seals.

 

 

 

Worn cylinder piston seals.

Have authorized Bush Hog dealer replace

 

 

 

 

seals.

 

 

Excessive wear on bottom of bucket

Float position not used while

Use float position provided on valve.

 

 

and wear pads.

operating loader.

 

 

 

 

 

 

 

 

Hydraulic cylinders inoperative.

Hose from control valve improperly

Refer to plumbing diagrams in Section V.

 

 

 

connected.

 

 

 

 

 

 

 

 

Pump operating continually on closed

Hydraulic control valve relief stuck

See your tractor manual for proper adjust-

 

 

center tractor hydraulic system.

open.

ment or Bush Hog dealer for loader valve.

 

 

 

Hydraulic control valve relief set

(3000 PSI is maximum pressure relief

 

 

 

too low.

setting recommended)

 

 

Loader lift and bucket tilt controls do not work

Hoses improperly connected.

Refer to plumbing diagrams in Section V

 

 

according to decal.

 

and correct hose connections.

 

 

 

 

 

 

 

Valve noisy and/or hot.

Open center control valve on

Install closed center plug on optional valve.

 

 

 

closed center tractor.

 

 

 

 

 

 

 

 

Tractor loads/pump squeals.

Closed center control valve on open

Install open center plug on optional valve.

 

 

 

center tractor.

 

 

 

 

 

 

 

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SECTION V ASSEMBLY

CAUTION

THE FOLLOWING SAFETY PRECAUTIONS SHOULD BE THOROUGHLY UNDERSTOOD BEFORE ATTEMPTING MACHINE ASSEMBLY.

1.Do not lift heavy parts or assemblies. Use crane, jack, tackle, fork trucks, or other mechanical devices.

2Select an area for assembly that is clean and free of any debris which might cause persons working on the assembly to trip.

3.Arrange parts to be assembled neatly in the work area and have tools or other mechanical assist ing devices in easy reach.

4.Inspect all parts and assemblies thoroughly and remove any sharp edges, grease, oil, or dirt which might cause pieces to slip when handling.

5.Preview the assembly instructions in your opera tor’s manual before proceeding further.

6.If the assembly instructions call for parts or assemblies to be blocked up, use only blocking material that is in good condition and is capable of handling the weight of the assembly to be blocked. Also insure that the blocking material is on a clean, dry surface.

7.Never put hands on any other part of body under blocked up assemblies if at all possible.

8.Always wear goggles or safety glasses when hammering, grinding or drilling metal parts.

9.If the assembly calls for welding or cutting, be sure that there are no flammable materials close at hand and that bystanders have taken necessary precautions.

AFTER COMPLETING ANY ASSEMBLY STEP,THOROUGHLY READ THE NEXT STEP IN THE ASSEMBLY INSTRUCTIONS BEFORE PROCEEDING WITH THAT STEP.

10.After completing assembly, thoroughly inspect the machine to be sure that all nuts, bolts, hydraulic fittings or any other fastened assemblies have been thoroughly tightened.

11.After completing assembly, be sure that all safety locking devices or guards are in place.

12.Before operating the machine, thoroughly read the operation section of this manual.

13.Before operating, read the maintenance section of this manual to be sure that any parts requiring lubrication such as gearboxes are full to avoid any possible damage.

14.Wear personal protective equipment such as,but not limited to, protection for eyes, ears, feet, hands, lungs and head when assembling the equipment. Do not wear loose clothing or jewelry that may catch on equipment moving parts.

BEFORE OPERATING THE EQUIPMENT, IF YOU HAVE ANY QUESTIONS REGARDING THE PROPER ASSEMBLY OR OPERATION, CONTACT YOUR AUTHORIZED BUSH HOG DEALER OR REPRESENTATIVE.

5-1MAINFRAME ASSEMBLY

BE SURE ALL STEPS ARE COMPLETED IN SUPPLEMENTAL BRACKET INSTRUCTIONS BEFORE BEGINNING FINAL ASSEMBLY.

A.Bolt the front mount, side mounts and cross tube (some models do not require cross tubes) to the tractor according to the supplemental instructions furnished with the mounting kit.

B.Attach level indicator rod guide to right hand side of boom using 1/4” bolt and flat washers as shown in Figure 3-1.Do not tighten so as to prevent indicator rod from pivoting.

C.Slide indicator rod through guide and secure

other end to outside of quick hitch with 1/2” locknut and washers. Check to ensure that indicator rod will pivot freely.

D.Install elbow fitting (supplied in bag of hardware) to the rod end of each bucket cylinder and attach corresponding hoses.

E. Raise rear of loader to install parking stands as shown.(Figure 5-1)

CAUTION

INSURE THAT METHOD OF RAISING THE FRAME ASSEMBLY PROVIDES SECURE SUPPORT AT ALL TIMES TO PREVENT IT FALLING ONTO FEET, HANDS, ETC.

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Figure 5-1Parking Stands Installed

Figure 5-3Cuff Arrangements

LOADER MODELS 2427 QT, 3227 QT

Subframe

Cuff WithWelded-OnBolt

Fixed

Pivot Pin

F.Connect hydraulic hoses to loader as shown in Figure 5-2.If optional hydraulic valve is used, refer to paragraphs5-2and5-3for valve and stand assembly instructions.

G.Install cuffs, pins, washers, bolts, and nuts as shown depending on your particular model loader. (Figure 5-3)

LOADER MODELS 2447 QT, 2847 QT

Square Head Bolt

Figure 5-2Tractor Hydraulic Kit

(4) Hoses

NOTE:

HOSES COMING FROM MAINFRAME ARE

COLOR CODED FOR IDENTIFICATION. Straight Adaptor

Red - Rod End of Lift Cylinder

Blue - Head End of Lift Cylinder

Green - Head End of Bucket Cylinder

Yellow - Rod End of Bucket Cylinder

3/4”- 16 JIC Threads

Mainframe

Subframe

Removable

Pin

Cuff

1/2” NPT to 3/4” JIC

To Tractor Outlets Through Quick Couplers

(Not Supplied)

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Figure 5-4Valve Stand Assembly

Optional

Mounting Bracket

 

 

Operational

 

 

Decal

Shield

 

 

 

1/2 x 1-1/2”

3/8 x 1-1/4”

 

5/8 x6-1/2”

5/16 x 3”

Mounting Bracket

1/2 X 3”

1/2 X 1-1/2”

5/8 X 6-1/2”

Mounting Plate

5-2OPTIONAL HYDRAULIC VALVE

STAND ASSEMBLY (Figure 5-4)

A.Attach mounting plate to loader frame using two 5/8 x 5-1/2”bolts, flatwashers, lockwashers and nuts. Note that this plate may be rotated 180° to allow three different mounting tube heights.

B.Attach mounting bracket to plate using two 1/2

x1-1/2”bolts, lockwashers and nuts.

(2)

5/16 X 2-1/2”

5/16 X 3”

Valve

Plate

5/16 X 1”

Tube

Optional Brace

C.Attach mounting tube to bracket using 1/2 x 3” bolts, lockwashers and nuts. The slotted hole also requires a flatwasher, as shown.

D.Attach valve plate to tube using U-bolts,lockwashers and nuts.Note: Mounting tube may be too long for tractor being mounted and should be cut to desired length.

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5-3OPTIONAL HYDRAULIC VALVE PLUMBING INSTRUCTIONS

A.Mount valve assembly to valve plate using fasten ers provided.

B.Plumb valve as shown in Figure 5-5.

C.This valve is set for an open center tractor hydraulic system. If tractor has a closed center hydraulic system, a closed center plug must be installed.

Figure 5-5Walvoil Hydraulic Control Valve

7/8” ORB to 3/4” JIC

Note: Single handle control shown. Dual handle control plumbs the same as shown.

D.Remove open center plug.

E.Install the closed center plug furnished with valve. Note: When converting to closed center configuration open center plug is removed from valve and installed in sleeve of closed center plug assembly.

F.Install valve operational decal on valve shield.

HOSE COLOR CODES

Red - Rod End of Lift Cylinder

Green - Head End of Bucket

Blue - Head End of Lift Cylinder

Yellow - Rod End of Bucket

NOTE:

When converting to closed center configuration open center plug is removed from valve and installed in sleeve of closed center plug assembly.

Open Center Plug

To Presure Outlet

To Return Inlet

90° Elbow 1/2” NPT to 3/4” JIC

Attach Quick Couplers to these fittings. (Quick couplers not supplied in kit.)

Closed Center/Power Beyond Plug

NOTES:

1.When attaching a loader valve to the rear remotes of the tractor, a power beyond kit is not required. (Figure 5-6)A power beyond kit MUST be used when attaching a loader valve to a hydraulic source other than to the rear remotes of a tractor having an OPEN center hydraulic system.

2.A power beyond kit is NOT required on tractors with a CLOSED center hydraulic system. The loader valve may be attached to the tractor at the rear remotes or, at another hydraulic source recommended by the tractor manufacturer.

3.If Power Beyond System is used, refer to basic Power Beyond plumbing instructions on the following page. (Figure 5-6)

4.If the tractor has a Pressure Flow Compensated System (PFC) - the loader valve MUST be connected to theTRACTOR REMOTES.

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5-4BASIC POWER BEYOND PLUMBING INSTRUCTIONS

IMPORTANT

When loader hydraulics are disconnected from tractor hydraulics, hoses A & B must be connected to complete tractor hydraulic circuit. FAILURE TO DO THIS WILL CAUSE SERIOUS DAMAGE TO TRACTOR HYDRAULIC SYSTEM.

Figure 5-6

Power Beyond

Plug

NOTE

More detailed assembly instructions are furnished with individual Power Beyond Kits.

 

 

 

 

Return

Inlet

 

 

 

 

Pressurized

 

 

Hose

Here)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To

 

 

 

 

 

 

Long

 

 

 

 

 

 

 

 

(Use

 

 

 

 

 

 

Inlet

 

 

 

 

 

 

Sump

 

 

 

 

Inlet

 

To

 

 

 

 

Pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

To

 

 

 

 

B

 

 

C

These hoses to

 

be furnished by

A

dealer.

 

Open Center

Plug

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5-5FORK LIFT OPTION

Raise positioning lock pins at the top of each fork. Place fork in the middle of the frame over the notch in the lower edge. slide forks to desired positions and lower pins to lock forks in place.

Guard

Fork

Mainframe

 

Lock Pin

5-6BALE SPEAR OPTION

Insert long spear into top of frame and fasten with eccentric nut as shown. Tapered side of nut must be against frame. Torque nut to 470 - 505 ft./lbs. Insert short spears into tubes at bottom of frame and tighten bolts.

Eccentric Nut

Long Spear

Frame Assembly

Short Spears

Locking Bolt

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5-7OPTIONAL BUCKET ITEMS ASSEMBLY

SPILL GUARD ATTACHMENT

SPILL GUARD

1/2 x 1-1/2”Bolt,

Lockwasher & Nut

1.Place spill guard on bucket & center.

2.Mark hole centers for attaching fasteners. Allow clearance for side cutting edges on bolts in side plates if necessary.

3.Remove spill guard and drill 9/16” holes. Install spill guard and torque fasteners per Bush Hog standards.

9/16” Holes (7Places)

SIDE CUTTING EDGES

DIGGING TEETH

1/2 x 1” Bolt & Locknut

3/8 X 2-1/2”Bolt,

 

 

 

Bushings

Lockwasher & Nut

 

 

 

 

 

 

 

 

1/2 X 1-1/2”BOLT

3/8” U-BOLT

TINE TEETH

Lockwashers & Nuts

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