TM 10-5410-228-24
3.9.7
NBC Fan/Motor Repair Continued.
NOTE
Remove two elbows, connector, and adapter from hydraulic motor prior to removing
hydraulic motor from C-face adapter. Otherwise, a vise will be required to hold hydraulic
motor.
Plug open ports on hydraulic motor and open ends of tube assemblies to keep the hydraulic
motor free of contaminants.
(4)
Remove elbow (2) from hydraulic motor (3). Remove and discard O-ring (12) from elbow (2). Plug
open port on hydraulic motor (3).
(5)
Remove elbow (6) from hydraulic motor (3). Remove and discard O-ring (13) from elbow (6). Plug
open port on hydraulic motor (3).
(6)
Remove connector (9) from adapter (10). Remove and discard O-ring (14) from connector (9).
(7)
Remove adapter (10) from hydraulic motor (3). Remove and discard O-ring (15) from adapter
(10). Plug open port on hydraulic motor (3).
NOTE
Access setscrew on NBC motor coupling through access hole on C-face adapter (plate may
have to be removed). In order to reach setscrew, NBC motor coupling may have to be rotated.
(8)
Loosen setscrew (16) on NBC motor coupling (17).
(9)
Remove four screws (18) and four lockwashers (19) securing hydraulic motor (3) to C-face
adapter (20) and remove hydraulic motor (3). Discard four lockwashers (19).
b. Installation (Refer to Figure 3-12)
(1)
Apply antiseize compound to shaft of hydraulic motor (3).
(2)
Secure hydraulic motor (3) to C-face adapter (20) with four screws (18) and four new
lockwashers (19) (Item 18, Appx E).
(3)
Align NBC motor coupling (17) key way and slide onto shaft of hydraulic motor (3).
Wear gloves when working with sealers. Use in well ventilated area. Avoid prolonged contact
with skin.
(4)
Apply sealant to setscrew (16).
(5)
Align NBC motor coupling (17) to NBC fan coupling insert (25) and tighten setscrew (16).
(6)
Check adapter (10) sealing surfaces for damage or material build up. If required, replace
adapter (10) or clean any material build up with clean, lint-free cloth.
(7)
Install new O-ring (15) (Item 55, Appx E) on adapter (10). Ensure that O-ring (15) is seated and
retained properly.
(8)
Lubricate O-ring (15) with a light coating of hydraulic fluid.
(9)
Coat male threads of adapter (10) with hydraulic fluid.
(10) Remove plug from port on hydraulic motor (3). Install adapter (10) on hydraulic motor (3), finger
tight.
(11) Check connector (9) sealing surfaces for damage or material build up. If required, replace
connector (9) or clean any material build up with clean, lint-free cloth.
(9). Ensure O-rings (14 and 11) are seated and retained properly.
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