Installation - TM-10-3930-673-20-20696

TM 10-3930-673-20-2

18-29. BOOM HOIST CYLINDERS REPLACEMENT (CONT)

NOTE

If removing one boom hoist cylinder have assistant signal operator when cylinder is fully retracted.

If removing both boom hoist cylinders, note that one cylinder will fully retract before other cylinder

begins to retract. Have assistant signal operator when both cylinders are fully retracted.

(6)

Start engine and run at full throttle (TM 10-3930-673-10).

(7)

Using boom hoist joystick, fully retract boom hoist cylinder (4).

(8)

Stop engine (TM 10-3930-673-10).

(9)

Using suitable lifting device, lower boom hoist cylinder (4) until cylinder is resting on wooden board placed

on vehicle deck (5).

(10)

Tag, mark, and remove two hoses (9 and 10)

from fittings (11 and 12).

(11)

Remove boom hoist cylinder lower pivot pin

(13) from frame (14).

(a)

Remove locknut (15) and screw (16) from

lower pivot pin (13) and frame (14).

Discard locknut.

(b)

Remove lower pivot pin (13) from frame

(14) and boom hoist cylinder (4).

(12)

Move lifting device to cylinder (4) balance

point and remove cylinder from vehicle.

b. Installation.

(1)

Using suitable lifting device, lower boom

TR00843

hoist cylinder (4) until cylinder is resting on

board placed on vehicle deck (5).

(2)

Apply anti-seize compound on lower pivot pin (13).

(3)

Align cylinder base lower mounting holes and install lower pivot pin (13) in frame (14) and boom hoist

cylinder (4) with screw (16) and locknut (15).

(4)

Install two hoses (9 and 10) on fittings (11 and 12).

18-160