Servicing The Planet Carrier Assemblies - PRM NEWAGE 415 Series Workshop Manual

Servicing the Planet Carrier Assemblies

NOTE: This procedure assumes the Axle has had both arms removed - see section D.
1. The Planet Carrier assembly (C1 – C8) can now be removed from the Main Case (A3). Take
care not to withdraw the Sun Gears (C9).
2. Remove the Sun Gears (C9) carefully so as not to allow to drop and damage, from either
side.
3. Check the Planet Gears (C4) and the mating gear teeth on the Annulus (C10) and Sun Gear
(C9) for damage and wear. The Planet Gears (C4) should run free in the Planet Pins (C1),
without excessive radial "play". Replace if worn.
NOTE: When servicing the Planet assembly, we recommend all three Planet Gears (C4),
Planet Pins (C1), Needle Roller Bearings (C3), Spring Dowels (C6), Annulus (C10) & Sun Gear
(C9) are replaced together.
4. To replace the Planet Gears, Pins or Bearings, drift each Spring Dowel (C6) through its hole,
which locates the Planet Pins (C1) through the Planet Carrier (C5). Once the Dowels have
been removed, lightly drift each Planet Pin (C1) through the Planet Gear (C4) and Planet Car-
rier (C5). Remove the loose Planet Gears (C4), Thrust Washers (C2) and Needle Roller Bear-
ings (C3). Remove Circlip (C8), which secures the Spacer (C7).
NOTE: The Spacer (C7) is fitted with the large central chamfer facing outwards towards the Spline
in the Planet Carrier (C5).
To reassemble:
1. Replace the Spacer & Circlip (C7 & C8) and slide the Needle Roller Bearings (C3) into the
Planet Gears (C4). Fit the bottom Thrust Washer (C2) over the machined boss within the
Planet Carrier (C5), place the Planet Gear (C4) with the Needle Roller Bearing (C3) on top of
the bottom Thrust Washer and from the underside gently tap the Planet Pin (C1) through
the Carrier (C5), bottom Thrust Washer (C2) & Planet Gear (C4).
NOTE: When you begin this procedure, the cross hole in the Planet Pin (C1) must be
aligned with the cross hole in the Planet Carrier (C5).
2. When part way through fit the top Thrust Washer (C2) and continue to drift the Planet Pin
(C1) all the way through the Planet Carrier until it is flush with the Planet Carrier machined
face (C5).
3. Secure by fitting a new Spring Dowel (C1) in the Planet Carrier (C5). To prevent the Spring
Dowel (C1) from drifting out of position. The end should be peined into the Planet Carrier
(C5). Failure to do this can cause the Planet Gear (C4) to work loose.
4. Check for free rotation of the Planet Gears (C4) & their respective Planet Pin (C1).
5. This process is repeated for all three Planet Gear fitment (C4).
6. To refit, engage the Teeth of the Sun Gear (C9) with those of the Planet Gears (C4). Mesh the
Planet Gears with the Annulus (C10) and push into position.
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