Jack Assemblies (Shelter Serial No. 728 and Subsequent)

TM 10-5410-223-14/1

(2) Remove drive screw (4) and disconnect

d. Inspection. Inspect all parts for wear and

end terminal (5) from wire rope (6). Remove wire

damage.

rope.

e. Repair.

(3) Remove locking screw (7) and pad (8) from

(1) Replace all worn and damaged parts.

outer tube (14).

(2) Replace an irreparable jack assembly.

(4) Drive out spring pin (9) and detach

f. Assembly.

wrenching stud (10), thrust washer (11), and seal

(12).

NOTE

(5) Carefully slide out lower portion of the

During reassembly lubricate all mov-

jack, away from the outer tube (14).

ing parts with a suitable high-tem-

perature water- resistant grease NLGI

(6) Remove packing (13) and key (18) from

2 automotive chassis lubricant is sat-

the inside of outer tube (14).

isfactory).

(7) Remove two bearing raceways (15), thrust

bearing (16), and bearing support (17) from pro-

(1) Install the pin assembly (16, fig. 4-26) on

truding portion of lifting screw (33).

the plate (17) and secure with screw (15).

(8) Remove cotter pin (19) and pin (20) and

(2) Install the retracting tube (14) on the

detach base plate (21).

plate (17) and secure with pin (13) and cotter pin

(12).

(9) Remove cotter pin (22), pin (23), and two

spacers (24) from inner tube (34). Detach pivot

(3) Install a new grommet (11), if removed.

block (25).

(4) Install the plug (10) and screw (9).

(10) Remove caplug (26) from inside of inner

(5) Install the wire rope (8) and secure with

tube (34).

screw (7).

(11) Remove two pins (27), setscrew (28),

(6) Install the ratchet (6) and wire rope (5).

spring (29), and locking insert (30). Detach lifting

(7) Install the seal (4), washer (3) and stud (2)

nut (31) from inner tube (34).

onto the retracting tube (14) and secure with pin

(12) Remove lifting screw (33) and stop pin

(1).

(32) from inner tube (34).

g. Installation.

d. Inspection. Inspect all parts for wear and

(1) Position the jack assembly, figure 4-25,

damage.

and secure lower bracket with bolts.

e. Repair.

(2) Secure upper portion of jack bracket with

(1) Replace all worn or damaged parts.

pin and cotter pin.

(2) Replace an irreparable jack assembly.

4-24.1 Jack Assemblies (Shelter Serial No. 728

f. Assembly.

and Subsequent).

NOTE

a. General. This paragraph provides mainte-

During reassembly, pack listing screw

nance instructions for jacks installed on shelter

with approximatley 1 oz. of MIL-G-

seial no. 728 and subsequent.

23827 grease.

b. Removal

(1) Install stop pin (32) on lifting screw (33).

(1) Refer to figure 4-26.1 and remove four re-

(2) Screw lifting nut (31) onto lifting screw

taining hex-head screws and washers from the

(33) until threads catch.

upper mounting bracket.

(3) Install locking insert (30), spring (29), and

(2) Remove two hex-head screws and washers

setscrew (28).

from the lower mounting bracket and remove jack

assembly,

(4) Install preassembled parts through the

top of inner tube (34). Align holes and install two

c. Disassembly.

pins (27).

(1) Remove ferrules (1, fig. 4-26.2) and discon-

(5) Install caplug (26) into inner tube (34).

nect wire rope (2) from ratchet wrench (3). Remove

ratchet wrench from its mounting bracket.

Change 2

4-79