Chapter 3. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

TM 55-1730-208-13

CHAPTER 3

ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

Section I. PREPARATION FOR INSTALLATION, STORAGE, AND SHIPMENT

3-1. General.

e. Connect hose at cylinder and ram assembly.

This section provides detailed instructions for

f. Using sufficient manpower, place hydraulic jack

unpacking, erection, inspection, bleeding, and servicing

upright.

procedures to be performed before the hydraulic jack is

put into service. This section also provides storage,

g. Operate pump handle.

demolition, and shipment procedures.

h. If ram is slow to rise or is spongy, use a suitable

container to catch escaping hydraulic fluid and loosen

3-2. Unpacking.

hose at cylinder and ram assembly. Operate pump

Unpack the hydraulic jack in accordance with the

handle to bleed air from hydraulic system. Tighten

following procedures.

hose.

a. Remove hydraulic jack from wood crate.

i. Repeat step h as required to bleed hydraulic

system.

b. Remove tape, barrier material, and desiccant

bags from cylinder and ram assembly and pump

3-6. Servicing.

assembly.

Service the hydraulic jack as follows:

c. Check contents of shipping crate against list of

parts provided.

a. Clean hydraulic jack with dry cleaning solvent

d. Remove preservative coating compound from

(item 1, table 1-2) by spray or brush application. Dry

treated surfaces with dry cleaning solvent item 1, table

with filtered, compressed air or use a clean cloth.

1-2).

b. Apply a thin film of lubricating oil (item 2, table

1-2) on ram assembly and roller of pump assembly.

3-3. Erection.

c. Lubricate casters with lubricating oil (item 2,

To assemble or change height configuration of the

table 1-2).

hydraulic jack, refer to paragraph 2-1 and figure 2-1.

d. Spot paint hydraulic jack with enamel (item 3,

3-4. Inspection.

table 1-2) as required.

Inspect the hydraulic jack in accordance with the

e. Flush and service pump assembly as follows:

following procedures.

(1) Remove filler plug and fill with hydraulic

a. Inspect hydraulic jack for condition of paint,

fluid (item 4, table 1-2).

corrosion, and bent braces and tension bar.

(2) Disconnect hose from pump assembly

b. Inspect nameplate and decals for legibility

and drain hydraulic fluid into a suitable container.

and security.

(3) Reconnect hose to pump assembly.

(4) Fill reservoir with hydraulic fluid (item 4,

3-5. Bleeding.

table 1-2) to a level of I inch below filler plug. Install

Bleed the hydraulic jack in accordance with the

filler plug.

following procedures.

3-7. Limited Storage Procedures.

a. Using sufficient manpower, lower hydraulic jack

Place the hydraulic jack in limited storage in

on its side with hose from pump assembly up.

accordance with the following procedures:

b. Disconnect hose at cylinder and ram assembly.

c. Add hydraulic fluid (item 4, table 2-1) through

a. Inspection. When preparing the hydraulic jack

inlet port of cylinder and ram assembly until the cylinder

for limited storage, inspect all parts for serviceable

is full and all entrapped air has escaped.

condition. Correct any deficiencies prior to placing

equipment in storage.

d. Elevate hose and slowly operate pump handle

until hydraulic fluid completely fills hose.

b. Preservation. The hydraulic jack shall be

3-1