TM 10-5410-228-24
3.7.1
Auxiliary Power Pack Replacement Continued.
(4)
Place motor mounting base (48) with AC motor (42) attached onto four rubber mounts (49) and
secure with four screws (45), four new lockwashers (46) (Item 20, Appx E) and four flat washers
(47).
(5)
Install pump shaft key (44) onto shaft of AC motor (42). Apply antiseize compound to shaft.
(6)
Align and slide motor coupling (34), pump insert (43) and pump coupling (32) onto shaft of AC
motor (42).
(7)
Secure C-face pump adapter (38) to AC motor (42) with four screws (39), four new lockwashers
(40) (Item 22, Appx E) and four flat washers (41).
(8)
Secure piston pump (7) to C-face pump adapter (38) with two screws (35), two new lockwashers
(36) (Item 22, Appx E) and two flat washers (37).
NOTE
Gain access to pump coupling setscrew through access hole in C-face pump adapter.
(9)
Tighten setscrew (31) on pump coupling (32) and setscrew (33) on motor coupling (34).
(10) Install new O-ring (29) (Item 56 Appx E) on elbow (11). Lubricate O-ring (29) with a small
amount of grease.
(11) Install elbow (11) on piston pump (7). Ensure that O-ring (29) is properly seated and is not
pinched. Tighten elbow (11) until finger tight.
(12) Torque elbow (11) to 720 25 in.-lb (60 2 ft-lb).
d. Installation (Refer to Figure 3-2)
The auxiliary power pack is extremely heavy. Use proper lifting equipment and observe all
safety practices for lifting to prevent injury to personnel.
NOTE
When removing hoses, catch excess hydraulic oil in hose with small container. Clean up
spillage with rags.
An extension light should be used to help locate components and hardware.
(1)
Place auxiliary power pack onto jack.
(2)
Carefully slide jack and auxiliary power pack underneath ECV compartment.
(3)
Center jack and auxiliary power pack underneath the ECV wheel well.
Clearances are extremely close. Damage may result if auxiliary power pack is not raised
carefully.
(4)
Using jack, carefully start to raise auxiliary power pack through cutout in ECV wheel well.
Connect cable assembly 1A1W2 connector P1 (21) to underside of pan and frame assembly per
(5)
Install new O-ring (27) (Item 53, Appx E) on fitting (23). Lubricate O-ring (27) with small
amount of hydraulic fluid.
(6)
Install fitting (23) on hose assembly (22). Ensure that O-ring (27) is properly seated and is not
pinched.
(7)
Install new O-ring (28) (Item 54, Appx E) on fitting (23). Lubricate O-ring (28) with small
amount of hydraulic fluid.
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