Service Repair Manual
312B and 312B L Excavator
Model: 312B EXCAVATOR 9NW
Configuration: 312B & 312B L Excavators 9NW00001-UP (MACHINE) POWERED BY 3054 Engine
Disassembly and Assembly
312B Excavator Machine Systems
Media Number -RENR1113-01
Publication Date -01/06/1999
Date Updated -29/11/2001
Final Drive - Disassemble
SMCS - 4050-015
Spring Compressor Plate
110 V Power Pack
220 V Power Pack
312B & 312B L Excavators 9NW00001-UP (MACHINE) POWERED BY 3054 Engin...
( 1 ) Use this wrench for the newer shaft nut that has four slots.
A. Remove the final drive. Refer to Disassembly and Assembly, "Final Drive - Remove" in this
1. Thoroughly clean the outside of the travel motor and the final drive prior to disassembly.
2. Put an alignment mark across the sections of the travel motor and the final drive for
assembly purposes. The parts must be reinstalled in the original locations of the parts.
3. Fasten the travel motor and the final drive to Tooling (A) with the travel motor in the up
position. Remove drain plugs (1) in order to drain the oil. The capacity of the final drive is
2.5 L (.66 US gal).
4. Remove the bolts (2) and use the lifting strap in order to remove the travel motor from the