Mec 4069RT - Driving on Slopes; Transport and Lifting Guidelines; Machine Transport and Lifting Overview

“4069RT” Service and Parts ManualMarch 2014
Page 1-8
HYDRAULIC PUMP
H YDRAULIC P UMP
• Clean all fittings before disconnecting hoses.
• Tag hoses for proper reassembly.
• Plug all openings to prevent contamination.
Figure 1-3: Hydraulic Pump
An internal
combustion engine
drives a variable
displacement axial
piston pump.
R EMOVE
1. Place a large con-
tainer under the
engine and pump
to catch fluid that
will be lost during
pump replace-
ment. Dispose of
used fluid properly.
2. Tag and disconnect
hydraulic hoses,
and IMMEDI-
ATELY cap or cover
the openings to prevent contamination.
3. Remove the two bolts that hold the pump to the housing.
4. Remove the pump.
I NSTALL
1. Install drive hub onto pump shaft. Torque bolt to 45 Ft. Lbs. (61 Nm).
2. Position the pump next to the housing. Turn the pump until the splines on the hub
align allowing the pump to become flush with the housing.
3. Turn the pump until the bolt holes align with the mounting holes on the housing and
install the bolts. Torque to 25-28 Ft. Lbs. (35-38 Nm).
4. Install the hydraulic hoses.
5. Check for leaks and check all hydraulic pressures.
ART_4483
Hydraulic
Pump Unit