TM 10-5410-228-24
2.12.8 Hydraulic Pump Replacement.
This task covers:
a. Removal
d. Installation
b. Disassembly
e. Alignment
c. Assembly
f. Prime Hydraulic Pump
INITIAL SETUP
Tools/Test Equipment:
Equipment Conditions:
Shop Equipment, Automotive Maintenance and
ECV shut off, system off, power panel and rear
Repair (Item 38, Appendix B)
control panel tagged.
1-7/8 Inch Crowfoot Wrench (Item 63, Appendix B)
ECV parking brake set.
Torque Wrench (Item 66, Appendix B)
ECV hood raised and secured
Tension Tester Bar (Item 49, Appendix B)
(see TM 9-2320-387-24-1).
Mechanical Puller (Item 30, Appendix B)
Primary hydraulic pump belt removed
(see para 2.12.7).
Materials/Parts:
Hydraulic system drained (see para 2.14.3) or hose
Antiseize Compound (Item 13, Appendix C)
assembly quick disconnects uncoupled.
Hydraulic Fluid (Item 24, Appendix C)
Inner fender and air duct removed
Eight Lockwashers (Item 27, Appendix E)
(see TM 9-2320-387-24).
Three Lockwashers (Item 28, Appendix E)
Seven Lockwashers (Item 30, Appendix E)
References:
TM 9-2320-387-24-1
O-ring (Item 63, Appendix E)
O-ring (Item 50, Appendix E)
O-ring (Item 53, Appendix E)
O-ring (Item 54, Appendix E)
External Tooth Lockwasher (Item 38, Appendix E)
NOTE
A small amount of hydraulic fluid will be released when removing tubes. Collect fluid in a
container and clean any spillage with rags.
Remove/disassemble only to the extent necessary to remove or replace defective
assemblies/components. Use standard maintenance shop practices/procedures.
a. Removal (Refer to Figure 2-14)
(1)
Close shut off valve (1) to hydraulic pump (2).
(2)
Remove four bolts (3) and four lockwashers (4) securing two flange halves (5) and hose assembly
(6) to hydraulic pump (2). Discard four lockwashers (4).
(3)
Remove and discard O-ring (7) from hose assembly (6).
(4)
Disconnect hose assembly (8) from hydraulic pump (2).
(5)
Disconnect hose assembly (9) from elbow (10).
(6)
Remove elbow (10) from hydraulic pump (2).
(7)
Remove and discard O-rings (11 and 12) from elbow (10).
(8)
Disconnect tube assembly (13) from elbow (14).
(9)
Remove four bolts (15) and four lockwashers (16) securing two flange halves (17) and elbow (14)
to hydraulic pump (2). Discard four lockwashers (16).