621G and 623G Wheel Tractor Power Train Caterpillar


Final Drive - Assemble

Usage:

621G ALP

Assembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
138-7574  Link Bracket 
2P-8312  Retaining Ring Pliers 
9S-3263  Thread Lock Compound 


NOTICE

Keep all parts clean from contaminants.

Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.

To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.

Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.




    Illustration 1g00829571

  1. Support ring gear (11) with suitable blocking. Install Tooling (A) and a suitable lifting device to hub (12). Install hub (12) to ring gear (11). The weight of ring gear (11) is approximately 45 kg (100 lb). The weight of hub (12) is approximately 50 kg (110 lb).


    Illustration 2g00829569

  2. Apply Tooling (C) onto the bolts that attach retainers (13). Install two opposing retainers (13) and the bolts before removal of Tooling (A). Install the other retainers (13) and the bolts.


    Illustration 3g01050664

  3. Install roller bearings (9), spacers (10), and thrust washers (8) into planetary gear (7).

  4. Repeat Step 3 in order to assemble the remaining two planetary gears.


    Illustration 4g01050663

  5. Install seal (6). Install planetary gears (7).


    Illustration 5g00829518

  6. Use Tooling (B) in order to install retaining ring (5).

  7. Repeat Step 6 in order to install the remaining two retaining rings.


    Illustration 6g00829516

  8. Install planetary shafts (4).


    Illustration 7g01050662

  9. Install spacer (1) and sun gear (2). Use Tooling (B) in order to install retaining ring (1).

End By:

  1. Install the final drive. Refer to Disassembly and Assembly, "Final Drive - Install".

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