REMOVAL, REPAIR AND INSTALLATION OF JACKSCREW.

TM 55-1730-223-13

d. Remove rear legs. (See para. 3-21.)

e. Remove steps. (See para. 3-22.)

f. Rotate handwheel to raise front leg 12 inches. Support securely

with safety stands between main frame and front leg.

g. Loosen self-locking nuts (1)

and capscrews from upper tubing

and mount (2).

h. Loosen capscrew (3) to

release tension on clamp (4).

Support drive shaft (5) to

prevent it from falling.

i. Loosen self-locking nuts (1)

and capscrews and remove from

lower tubing and mount (2).

j. Loosen capscrew (3) to

release tension on clamp (4).

k. Pull jackscrew (1) so that

upper tubing and mount (2) and

lower tubing and mount (3) slides

thru front leg (4) and main frame

(5).

l. When jackscrews are free

from frame and front leg, loosen

two capscrews (6 and 7) and two

self-locking screws (8 and 9) on

both jackscrews. Remove both

upper and lower tubing and mounts

(2 and 3) from both jackscrews.

m. Straighten any bent parts.

Weld any cracks that appear.

3-20