Figure 4-82. Lift Chain Adjustment

Figure 483. Blocking Wheels

Figure 4-82. Lift Chain Adjustment

b. Check to be sure there is no bind, as the

b. Elevate carriage to about 4 feet.

upright is lowered slowly. Rail assembly should be

free to lower smoothly without hesitation or

c . Smear grease on the inner-slide channel as

hang-up.

c. If there is any evidence of binding (rail

d. Pick up a capacity load.

assembly hesitates, remaining stationary briefly

w h i l e lift cylinder continues to retract), upright

Note

rollers must be adjusted. Refer to paragraph 4-83.

It is important that the chain adjustment

4-80. LUBRICATE MACHINE. Lubricate all

be made with a capacity load. In this

m i s c e l l a n e o u s linkage with SAE 20 oil and all

manner you will allow for chain stretch.

grease fittings with chassis grease. (Refer to

Lubrication Chart.)

e. Making sure upright is either vertical or aft of

vertical, lower load to the bottom.

f. Remove capacity load.

When lubricating machine, inspect for

g. Raise carriage and measure the distance from

leaking hydraulic lines, fittings and

where the center of the bottom carriage roller

electrical wiring.

stopped, to the bottom edge of the inner slide.

D i s t a n c e must not be less than l/2 inch. Adjust

4-81. HYDRAULIC CONTROL VALVE AND

chain length at anchors (see figure 4-82) as

LINES. Inspect for damage, leakage and security of

required to obtain this dimension.

mounting.

4-79. LIFT CARRIAGE AND UPRIGHT

ROLLER ADJUSTMENT CHECK.

4-82. LIFT BRACKET. Inspect for damage, bent

forks, etc.

a. Extend upright and carriage to the upper limit.

4-68