New Holland TD60D - Fault Finding for Bevel Gear Pair and Differential; Fault Finding for Final Drives

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SECTION 27 -- REAR AXLE AND TRANSMISSION -- CHAPTER 1
603.54.471.00 -- 11 -- 2004
DESCRIPTION AND OPERATION
The rear transmission transmits power from the
gearbox to the lateral final drives by means of the
bevel gear pair. The bevel gear pair is of the helical
tooth type and is supported by taper--roller bearings.
The differential has two pinions and is equipped with
a mechanically controlled differential lock.
FAULT FINDING FOR BEVEL GEAR PAIR AND DIFFERENTIAL
Problems
Possible causes Remedies
T ransmission noisy while the trac-
tor is moving, even when the gear-
box is in neutral (not arising from
final drives).
1. Incorrect adjustment of bevel
pinion and / or ring bevel gear
bearings.
Remove the rear transmission box
and adjust the pinion and ring bevel
gear bearings correctly (page 39).
T ransmission noisy when tractor
ia operated with or without load.
1. Excessive clearance between
pinion and ring gear teeth.
Remove the rear transmission box
and correctly adjust the pinion and
ring gear bearings (page 39).
Differential repeats noise within
short intervals.
1. An internal component is bro-
ken or defective.
Remove the rear transmission box,
replace the worn parts and correctly
adjust the differential gear clearance
(page 42).
T ransmission noisy and assembly
overheats.
1. Pinion and / or ring gear
bearing clearances insuffi-
cient.
Remove the rear transmission box
and correctly adjust the pinion and
ring bevel gear bearings (page 39).
2. Insufficient coupling clear-
ance between the teeth of the
pinion and the ring gear.
Remove the rear transmission box
and correctly adjust the ring bevel
gear bearings (page 39).
F AULT FINDING FOR FINAL DRIVES
Problems
Possible causes Remedies
Final drive noisy when tractor is
moving, even with the gearbox in
neutral.
1. An internal component is bro-
ken or defective.
Remove the final drive box and re-
place the damaged parts.
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