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Section II: CONTROLS
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TM-55-1730-202-14 Jack Hydraulic Tripod Type B-5 Part Number 50K25177 Manual
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Section V. NUMERICAL PARTS LISTING
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).
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

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