Servicing The Main Case And Differential Assemblies; Removing The Differential; Servicing The Differential Assembly - PRM NEWAGE 415 Series Workshop Manual

Servicing the Main Case and Differential Assemblies

Removing the Differential

1. Remove the Axle Arm Assemblies and Sun Gears (C9) – see Section D.
2. Remove the Axle Arm Planetary Assemblies - see Section C.
3. Remove 10 off Bolts (E8).
4. The Input Cartridge Pinion Assembly (E1 – E12) with the Differential Assembly (B1 – B9) can
be removed from Main Case (A3), ensuring that the 2 Dowels (A5) are either removed or
remain in the Main Case (A3)
5. The Adjuster Nuts (B10) are "peined" into the Input Pinion Cartridge Housing (E7).
6. Carefully "Un-pein" and removed the Adjuster Nuts (B10), using PR30332 tool.
7. The Differential Assembly (B1 – B9) can now be removed from the Input Pinion Cartridge
Housing (E7).
CAUTION: Great care must be taken when removing the Differential Assembly from Main Case.
Any damage to the Crown Wheel would be detrimental to the axles' performance.
WARNING: The space constraints around the differential are very tight. The Differential
Assembly weights 20Kg, so ensure that you have a good grip on the casing before attempting
to remove the assembly from the case.

Servicing the Differential Assembly

1. Remove Nuts (B9) and Bolts if necessary (B1). The Crown Wheel (E1) is now loose and the
Differential assembly will split into 2 halves.
2. Remove the Differential Spider 2 off (B7) with the respective Differential Wheels (B8), Pin-
ions (B6), Wheel Washers (B4) & Pinion Washers (B5).
3. Inspect all Differential Wheels (B8), Pinions (B6), Spiders (B7), Bearings (B2), Wheel Washers
(B4) and Pinion Washers (B5) for damage and wear, replace if necessary.
4. To assemble, reverse the above procedure.
5. If new Differential Bearings (B2) are fitted, it will be necessary to reset the Bearing pre-load
and Crown Wheel/Pinion backlash.
NOTE: To reset the backlash, see page 13 for the procedure. The acceptable range can be found on
page 9.
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