Cluster Cylinder

TM 10-3930-630-12

Figure 4-18. Checking degrees of mast tilt

(a) Set protractor to measure ten degrees of

raise the carriage and mast. The cylinder includes two

tilt. Place protractor against mast as shown. Tilt mast

outer cylinders and a center cylinder. The crossheads

to end of cylinder backward stroke. Bubble must be

are secured to the top of the outer cylinder rods. As

centered if tilt is correct.

rods extend the crossheads rise and carry the chains

(b) If tilt is not correct, tilt mast as far forward

over the bearings, lifting the carriage and forks.

b. Inspection.

as possible (end of stroke). Loosen clamp screw (fig.

k17) on yoke at front of cylinder. Turn adjusting hex on

(1) Inspect the cylinders and connections for

cylinder rod (fig. 4-17) to extend or retract rod as

leaks and damage.

necessary to adjust tilt.

(2) Inspect crosshead bearings for good

(c) After adjusting, check degree of tilt.

condition.

Continue adjusting piston rod until ten degrees

(3) Operate lift mechanism and check chain

of backward tilt is obtained. Tighten clamp screw (fig. 4-

and cylinder operation.

c. Removal (Model ACC40-24PS180).

17) on yoke.

(d) Forward tilt is automatically adjusted to

(1) Lower mast to bring cluster cylinder to fully

proper angle when backward tilt is correct.

lowered position.

(e) Install floor and toe plates.

(2) Refer to paragraph 4-33 and remove the lift

(2) Normal tilt of the mast on model ACC40-

chains.

24PS180 trucks is 3 forward and 5.5 backward. Check

(3) Refer to paragraph 4-34 and remove

and set tilt as described in (1) above to these limits.

carriage.

4-38. Cluster Cylinder

(4) Remove screw (1), fig. 4-19) and

a. General Both models use a cluster cylinder

lockwasher (2) and remove guard (3) from tube.

4-27