Landoll 7431 VT Plus User Manual download pdf (Page 85)

OPERATION AND MAINTENANCE

4-17

Wheel Bearing Maintenance

Wheel bearing maintenance should be performed at the

beginning of every season of use. Check the wheel

bearings periodically for excessive end play. If needed,

adjust or replace them using the following procedure:

1. Place the frame on blocks or stands sufficient to lift

the tire clear of the ground.

2. Remove the tire.

3. Remove the hub cap, cotter pin, slotted nut and

washer.

4. Remove the hub. Clean and inspect the bearings and

hub cavity. Replace any worn or defective parts.

5. Repack the bearings using a high-quality wheel

bearing grease.

6. Slide the seal onto the spindle. Do not install the seal

into the hub.

7. Slide the inner bearing cone and hub onto the

spindle.

8. Install the outer bearing cone, washer and slotted

nut.

9. Torque spindle nut to 50 ft. lbs. Rotate hub both

directions a minimum of one quarter turn to set

bearings. Back off spindle nut until loose and torque

to 27 ft. lbs. on the 2-1/4” spindle or 45 ft. lbs. on the

3” spindle. If necessary, back off spindle nut until the

nut slot is lined up with the cotter pin hole. Do not

back off more than one flat of nut. Install new cotter

pin. Bend cotter pin to secure spindle nut.

10. Install a new hub cap. Coat inside of cap with grease.

NOTE

The seals should point away from the hub to keep

contaminants out and allow grease to pass.

11. Position seal over seal bore. Rotate seal in an inward

motion to ensure sealing surfaces are facing away

from the hub. Install seal flush with seal bore casting

surface.

12. When greasing hubs, fill hub until grease is purged

from seal.

Hydraulic Maintenance

1. Check the tractor hydraulic fluid level per tractor

owner's manual and after any leakage. Check fluid

level with the cylinders in the retracted position.

2. If a cylinder or valve leaks, disassemble the parts to

determine the cause of the leak. Any time a cylinder

is opened up, or whenever any seal replacement is

necessary, it is advisable to clean all parts and

replace all seals. Seal kits are available from your

Landoll dealer.

3. Check all hydraulic hoses weekly. Look for binding or

cracking. Replace all worn or defective parts

immediately.

IMPORTANT

Unfold, lower the unit to the ground, and relieve

hydraulic pressure before attempting to service any

hydraulic component.

4. Transport locks are provided to hold the implement in

a raised position. Do not attempt to perform any

service work under the implement without first

installing the transport locks. Before servicing any

hydraulic component, lower the implement to the

ground and relieve all system pressure. If a hydraulic

component is disconnected, repaired, or replaced, it

will be necessary to purge the system of air before

operation. See “Hydraulic Lift System” on

page 4-3 and “Hydraulic Fold System” on

page 4-5 on how to purge the hydraulic systems.

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Landoll 7431 VT Plus User Manual Page 85

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