Service Repair Manual
312C and 312C L Excavator
Model: 312C EXCAVATOR BNN
Configuration: 312C & 312C L Excavators BNN00001-UP (MACHINE) POWERED BY 3054T Engine
Disassembly and Assembly
312C Excavator Machine Systems
Media Number -RENR7476-00
Publication Date -01/07/2003
Date Updated -22/07/2003
Final Drive and Travel Motor - Disassemble
SMCS - 4050-015; 4351-015
S/N - BNN1-UP
Tool Part Number
Transmission Repair Stand 1
Slide Hammer Puller Gp
Backlash Gauge Gp
Bearing Puller Gp
Retaining Ring Pliers
Spanner Wrench As
A. Remove the final drive and the travel motor. Refer to the Disassembly and Assembly, "Final
Drive and Travel Motor - Remove".
312C & 312C L Excavators BNN00001-UP (MACHINE) POWERED BY 3054T Eng...
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
Refer to Special Publication, NENG2500, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is