Service Repair Manual
325B and 325B L EXCAVATOR
Model: 325B L EXCAVATOR 8RR
Configuration: 325B & 325B L TRACK-TYPE EXCAVATORS 8RR00001-UP (MACHINE) POWERED BY 3116 ENGINE
Disassembly and Assembly
325B Excavator Machine Systems
Media Number -SENR8963-06
Publication Date -01/02/2017
Date Updated -21/02/2017
Final Drive - Assemble
SMCS - 4050-016
Tool Part Number
Transmission Repair Stand
Retaining Ring Pliers
Thread Lock Compound
Note: Make sure that all of the parts of the final drive are thoroughly clean and free of dirt
and debris prior to assembly.
1. Check the condition of all the O-ring seals that are used in the final drive. If any of the O-
ring seals are damaged, use new parts for replacement.
Note: If the final drive sprocket was removed from the main housing, refer to Disassembly
and Assembly, "Final Drive Sprocket - Remove and Install" in this manual. Follow the
installation procedure in order to install the final drive sprocket on the main housing.
2. Assemble the final drive on Tooling (A).
325B & 325B L TRACK-TYPE EXCAVATORS 8RR00001-UP (MACHINE) POWE...
3. Apply Tooling (F) to the surfaces inside the main housing that contact bearings (38) and
(39). Install bearings (38) and (39) in the original locations in the main housing with a press.
Install bearings (38) and (39) until the bearings contact the counterbore in the main housing.
4. Use the following procedure to determine the correct bearing preload and the correct
thickness of shims (35) that are used under gear (34).