Figure 4-85. Roller Clearance Check

4-83. UPRIGHT ROLLER ADJUSTMENT. If

upright is binding or sticking during operation, an

adjustment of the upright rollers is necessary. This

adjustment is to be performed as follows:

a. Tilt the upright forward to raise drive wheels

o f f the ground, and block up drive wheels and

steering wheels as shown in figure 4-83.

b. Raise carriage and secure at its upper limit on

upright with a heavy chain as shown in figure 4-84.

Support carriage by running chain through

lower carriage bar and wrapping chain

around the lift cylinder just above the

chain anchor bracket. Chain should contact

cylinder barrel, not the push rod.

c. Position inner rail about 5 inches above the

full down position. Check for excessive clearance

Figure 4-84. Supporting Carriage

at top and bottom of both sides of the inner rail

Figure 4-85. Roller Clearance Check

4-59