Section IV. OPERATION UNDER UNUSUAL CONDITIONS

TM 55-1730-202-14

(2) Position the rise indicator (1) on zero of the rise

(6) Secure the retaining screw in the ram locknut

indicator decalcomania.

(4, figure 1) when the desired height is attained.

(3) Loosen the retaining screw on the ram locknut

c. Lowering.

(4) to allow the locknut to lower by its own weight as the

(1) Loosen the retaining screw in the ram locknut

ram is extended.

(4), turn the locknut to the top of the ram (3), and secure

t h e retaining screw.

(4) Loosen the air vent (1, figure 2) and tighten the

release valve (6).

(2) Slowly open the release valve (6, figure 2) until

the desired lowering rate of speed is obtained.

(5) Actuate the handle (8) to raise the load. If the

resistance from the handle is excessive, relocate the pin

(3) After the ram is completely lowered, close the

assembly (5) to shorten the stroke of the socket (7).

air vent assembly screw (2, figure 1).

Section IV. OPERATION UNDER UNUSUAL CONDITIONS

20. OPERATION IN DUSTY OR SANDY AREAS.

minimizing moisture contamination of the hydraulic oil.

c. Keep the hose dry to prevent rot and deterioration.

a. Lubricate the jack in accordance with lubrication

instructions contained in paragraph 24. Keep lubricant

containers clean and covered to prevent contamination.

22. OPERATION IN SALT WATER AREAS.

b. Protect the jack from dust and sand as much as

a. Protect all exposed metal surfaces from the cor-

possible. Clean jack frequently and cover jack with tar-

rosive action of salt air with a thin film of oil.

paulin when not in use.

b. Retouch or repaint the jack as required to protect

21. OPERATION UNDER HUMID CONDITIONS

painted areas from corrosion (Federal Specification TT-

E-489G, color 13538, Federal Standard 595A).

a. Clean all exposed areas frequently and apply a thin

film of oil to all exposed metal surfaces.

c. Keep the jack covered with a tarpaulin when not in

b. Open the air vent only when required for operation, use.

Section V. NUMERICAL PARTS LISTING

Fig. and

Index No.

Change 4 5