Remove - TM-5-5420-279-230340

TM 5-5420-279-23

WARNING

CRUSH INJURY. THE FOLDING CYLINDER IS VERY HEAVY. SUITABLE SUPPORT

IS REQUIRED TO PREVENT INJURY TO PERSONNEL.

INJURY FROM EXTREME HYDRAULIC OIL PRESSURE. THE SYSTEM MUST BE

DE-PRESSURIZED BEFORE CARRYING OUT ANY WORK ON THE FOLDING

CYLINDER.

SLIP AND FALL INJURY. PERSONNEL MAY SLIP ON SPILLED HYDRAULIC

FLUID. SUITABLE CONTAINERS AND FLUID ABSORBENT MATERIALS ARE TO

BE USED TO CONTAIN SPILLAGE.

Remove

(1)

De-pressurize hydraulic system. Refer to unit maintenance procedure 5-118.

(2)

Locate and identify the folding cylinders (1). They are located centrally on the A-Frame

lower cross member.

(3)

Place a suitable container under the folding cylinder (1) to catch any spilled hydraulic fluid.

(4)

Release the hydraulic pressure in the folding cylinder (1) refer to unit maintenance

procedure 5-123.

(5)

Note the position of and undo the connections of the two flexible hydraulic hoses (2)

attached to the folding cylinder (1).

(6)

Remove the flexible hoses and fit plugs and caps to the flexible hoses and the connection

block on the folding cylinder (1).

(7)

Support the weight of the folding cylinder (1).

(8)

Remove and retain the folding cylinder base pin (3) by removing two screws and the

locking plate.

(9)

Remove and retain the piston pivot pin (4) by removing two screws and the locking plate.

(10)

Remove the folding cylinder (1) from the mounting brackets on the A-Frame assembly.

(11)

Check the flexible hoses for chaffing or damage.

(12)

Examine bolt heads and threads on screws for damage.

(13)

Replace components as required.

Install

(1)

Place a folding cylinder (1) into the center-mounting bracket on the A-Frame.

(2)

Fit the base pin (3) and spacers. Secure in place with the locking plates and screws.

(3)

Fit the piston pivot pin (4) and spacers. Secure in place with the locking plate and screws.

5-84