INSTALLATION - CONTINUED -832450317

TM 10-3930-660-24-2

BOOM ASSEMBLY REPLACEMENT - CONTINUED

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INSTALLATION - CONTINUED

Carefully lower boom assembly (8) with hoist and sling until front of outer boom section is on jackstand or support.

Secure hydraulic hoses (3) to bottom of boom assem-

bly with new locknuts (A), capscrews (B) and clamp

halves (C).

10.

Connect rod ends of boom hoist cylinder (12) to boom

assembly (8).

11.

Reposition slings to front of outer boom section.

12.

Lift boom assembly (8) until cylinder pivot pin holes

of boom assembly (8) are just above cab.

A,B,C

409-1400

13.

Lift boom hoist cylinders (12) into position and sup-

port cylinders.

CAUTION

Use hoist and sling to make final alignment with cylinder rod eye and pivot pin hole. Do not use the joystick

to make final alignment; damage to rod eye bushing could result.

NOTE

One boom hoist cylinder will begin to extend before the other. Install this cylinder first. Second cylinder will

begin to extend after first cylinder is connected.

14.

Start engine (TM 10-3930-660-10).

15.

Use joystick to extend boom hoist cylinder (12) until

cylinder rod eye is aligned with pivot pin hole of

boom assembly (8). Stop engine (TM 10-3930-660-

10).

NOTE

Apply antiseize compound to pivot pin as installed.

16.

Secure pivot pin (13) to boom assembly (8) with cap-

screw (14) and new locknut (15).

17.

Repeat steps 14 thru 16 for other boom hoist cylinder

(12).

18.

Connect three hoses (9) to lines (10) at underside of

boom assembly (8).

19.

Start engine and raise boom assembly (8) as required

to access lines (10). Stop engine (TM 10-3930-660-

10).

WARNING

Remove hose caps carefully prior to con-

necting hoses in step 20. Hydraulic oil

may be under pressure.

20.

Connect three hoses (9) to three lines (10) at underside

409-1301

of boom assembly (8).

21.

Start engine and lower boom assembly (8) until hori-

zontal. Stop engine (TM 10-3930-660-10).

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