Service Repair Manual
Model: M315 EXCAVATOR 7ML
Configuration: M315 Excavator 7ML00001-00859 (MACHINE) POWERED BY 3054 Engine
Disassembly and Assembly
M315 EXCAVATOR MACHINE SYSTEMS
Media Number -SENR8930-00
Publication Date -15/01/1997
Date Updated -02/07/2018
SMCS - 5058-010; 5058-017
Remove & Install Swing Motor
Fluid Spillage Containment
Care must be taken to ensure that fluids are contained during performance of inspection,
maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with
suitable containers before opening any compartment or disassembling any component containing
fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to
collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations
At operating temperature, the hydraulic oil is hot and under pressure.
Hot oil can cause burns. To prevent possible personal injury, release the
pressure in the implement hydraulic circuits (boom, stick and bucket)
before any hydraulic lines or components are disconnected or removed.
1. Release the pressure in the hydraulic system as follows:
a. Fully retract the stick cylinder rod.
b. Adjust the position of the bucket so it will be flat on the ground when the boom is lowered.
c. Lower the boom until the bucket is flat on the ground.
d. Stop the engine.
e. Place the engine start switch in the "ON" position without starting the engine.
f. Move the control levers for the boom, stick, bucket and swing to all full stroke positions. This
will release any pressure that might be present in the pilot system.
g. Slowly move the travel pilot control pedal to "FORWARD" and "REVERSE" travel positions.
This will release any pressure in the travel circuit.
h. Slowly loosen and remove the pressu