1. MACHINE SCREW
17. FIBER WASHER
19. ADJUSTING SCREW
4. MOTOR BASE
22. CARBON BEARING
7. MACHINE SCREW
8. PUMP ASSEMBLY
24. IDLE SHAFT
10. LIP SEAL
11. HEXAGON HEAD CAPSCREW
26. DRIVE SHAFT
13. FIBER WASHER
14. PLUG NUT
15. BY-PASS VALVE ASSEMBLY
30. MACHINE SCREW
16. VALVE NUT
Figure 8-8. Prelube Pump Assembly, Exploded View (Sheet 2 of 2)
PRELUBE PUMP B3 CLEANING AND INSPECTION. See Figure 8-8.
Dry cleaning solvent, PD-680, Type Ill, or equivalent, is flammable
and moderately toxic to the skin, eyes, and respiratory tract.
Assure adequate ventilation. Skin, eye, and respiratory protection
is required to avoid injury to personnel.
Compressed air used for cleaning or drying can create airborne
particles that may enter the eyes. Pressure shall not exceed 30 psi
(207 kPa). Wearing of goggles is required to avoid injury to
Clean all parts using cleaning solvent PD-680, Type Ill, or equivalent, and dry with compressed air.
Inspect all threaded parts for stripped or damaged threads. Replace as necessary.
Inspect the carbon bearings (22), idle shaft (24), and drive shaft (26) for scoring of the friction surfaces.
Replace as necessary.
Inspect the cover (12) and body (29) for damage, and ensure that the mating surfaces are not scored or
grooved. Replace as necessary.
Check the spring (20) for signs of breakage or distortion. Replace as necessary.
Check the grommets (3) for signs of damage or deterioration. Replace as necessary.
PRELUBE PUMP B3 ASSEMBLY.
Install the lip seal (10, Figure 8-8) in the cover (12).
Press the carbon bearings (22) into the cover (12) and the body (29), if removed.
Press the gear (25) on the drive shaft (26), and press the pin (27) in the gear.
Press the gear (23) on the file shaft (24).
Lubricate the idle shaft (24) and gear (23), and the drive shaft (26) and gear (25), with dean lubricating oil,
such as MIL-L-2104, and install in the cover (12). Ensure that the idle shaft (24) and gear (23), and the drive
shaft (26) and gear (25), rotate freely in the carbon bearings (22).