Remove - TM-5-5420-279-230899

TM 5-5420-279-23

NOTE

The Boom must be lifted away from the Crane Base to allow access to the Lifting Cylinder.

The boom must then be supported throughout the lifting Cylinder replacement procedure.

Remove

(1)

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

(2)

Remove the hydraulic pipes (4) and (5) connected to the lifting cylinder (3).

(3)

Remove the electrical harness (6) and (7) connected to the lifting cylinder.

(4)

Remove the upper cylinder pin (8) snap ring (not shown).

(5)

Remove the set screws (9).

(6)

Note the orientation of the stop mechanical (10) and remove.

(7)

Support the weight of the lifting cylinder (3) and remove the upper cylinder pin (8). Note the

position of and retain the linkage and cylinder spacers that are fitted between the linkage

the lifting cylinder (3).

(8)

Remove the lower cylinder pin snap ring (not shown).

(9)

Remove the set screws (11).

(10)

Note the orientation of the stop mechanical (12) and remove.

(11)

Remove the lower cylinder pin (13). Note the position of and retain the spacers that are

fitted between the crane base (2) and the lifting cylinder (3).

(12)

Remove the lifting cylinder (3).

(13)

Check the set screws, stops mechanical and spacers for damage and wear.

(14)

Check hydraulic hoses for chaffing or crush damage.

(15)

Replace components as necessary.

Install

(1)

Locate the lifting cylinder (3) in the crane base (2).

(2)

Locate the lower pin spacers in the positions noted during removal and insert the lower

cylinder pin (13).

(3)

Align the slot in the lower cylinder pin (13).

(4)

Insert the stop mechanical (12) as noted during removal.

(5)

Secure the stop mechanical in place with the set screws (11).

(6)

Fit the snap ring to the opposite end of the lower cylinder pin (13).

(7)

Locate the upper pin spacers in the positions noted during removal and insert the upper

cylinder pin (8).

(8)

Align the slot in the upper cylinder pin (8).

(9)

Insert the stop mechanical (10) as noted during removal.

(10)

Secure the stop mechanical in place with the set screws (9).

(11)

Fit the snap ring to the opposite end of the upper cylinder pin (8).

(12)

Connect the hydraulic pipes (4) and (5) to the lifting cylinder (3).

(13)

Connect the electrical harness (6) and (7) to the lifting cylinder (3).

6-155