TM 9-2330-235-14&P
4-50.
LEVELING JACK MAINTENANCE (M514) (Con't).
4. Disassemble plunger assembly (56) by removing setscrew (50) from body (53). Remove spring (51) and pin (52)
from body.
5. Remove four nuts (6), lockwashers (7), and screws (1) securing cover (58) to gearbox (8). Remove cover and
gasket (25). Discard lockwashers and gasket.
6. Remove screw (17), lockwasher (16), and shoe (15) and cover (14) assembly from screw (11). Discard
lockwasher.
7. Remove three cotter pins (19), nuts (18) and separate shoe (15) from cover (14). Discard cotter pins.
8. Loosen hose clamp (12) and remove socket (13) from screw (11).
9. Remove four nuts (22), lockwashers (21), screws (20), sleeve (10), and plate (9) from gearbox (8). Discard
lockwashers.
10. Remove two screws (24) and stop (23) from gearbox (8).
11. Using handcrank, turn gearbox gears to remove screw (11) from gearbox (8).
c.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective goggles and gloves, and
use only in a well-ventilated area. Avoid contact with skin, eyes, and clothes, and DO NOT breathe
vapors. DO NOT use near open flame or excessive heat. The solvent's flash point is 1000F-1380F
(380C-590C). If you become dizzy while using cleaning solvent, immediately get fresh air and medical
help. If solvent contacts eyes, immediately wash your eyes and get medical aid.
1. Clean all metal parts with dry cleaning solvent and dry thoroughly.
2. Inspect screw for straightness by rolling on a flat surface.
3. Inspect shouldered shafts and plunger for damage.
4. Inspect sleeve for tears in fabric or loose stitching.
5. Check each case (49) for damage. If case is damaged, remove retaining ring (27) and press case out of support
assembly (3). Discard retaining. Press new case into support assembly and secure with new retaining ring.
6. Check fit of shouldered shaft in case. Fit should be smooth without binding or excessive free play.
7. Inspect bearings (26) for damage. If damaged, press out of support assembly and replace.
8. Check fit of plunger in bearing. Fit should be smooth without binding or excessive free play.
9. Inspect threaded inserts (62) in yoke (61) for stripped threads or other damage. If damaged, drive out of yoke and
replace.
10. If damaged, repair gearbox (para 4-51).
d.
ASSEMBLY
1. Aline screw (11) with threads in worm gear at lower side of gearbox (8). Turn drive shaft with handcrank, and
work screw into gearbox.
2. Install stop (23) on gearbox (8) with two screws (24).
4-120
