Service Repair Manual
Models
312B and 312B L Excavator
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Product: 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
i02061750
Final Drive - Disassemble
SMCS - 4050-015
Disassembly Procedure
Table 1
Required Tools
Tool
Part Number
Part Description
Qty
A
1P-2420
Repair Stand
1
B
9S-7338
Crossblock
1
3H-0465
Push-Puller Plate
2
154-9326
Spring Compressor Plate
1
154-9323
Spacer
2
C
5P-4758
Internal Pliers
1
D
138-7575
Link Bracket
2
E
1U-5839
Puller
1
F
199-4925
Wrench
(1)
1
165-1670
Wrench
1
165-1671
Reaction Shaft
1
132-8119
Torque Wrench
1
132-8223
110 V Power Pack
1
132-8231
220 V Power Pack
1
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G
154-9315
Thread File
1
( 1 ) Use this wrench for the newer shaft nut that has four slots.
Start By:
A. Remove the final drive. Refer to Disassembly and Assembly, "Final Drive - Remove" in this
manual.
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.
Illustration 1
g00526895
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).
Illustration 2
g00526930
4. Remove the bolts (2) and use the lifting strap in order to remove the travel motor from the
final drive.
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