REMOVAL - TM-10-3930-607-150209

UPRIGHTS

is locked in position by the right rear latch. Under these

conditions the inner upright is secured to the outer and

will remain so until the right rear latch is rotated to

unlock the left latch. This happens when the carriage

ceases to free-lift.

During the free-lift stroke, the carriage rises to the top of

the inner upright without any extension of the upright.

At the end of the free-lift stroke, the carriage lug

engages and rotates the front latch, which rotates the

right rear latch, unlocking the left rear latch. At the

same time, the lifting blocks make contact.

As the carriage continues to rise, it carries the inner

upright with it. Raising the inner upright rotates the left

rear latch, disengaging it from the lug. When the left

rear latch is rotated, it looks the right rear latch, At this

stage of operation, and until the carriage is lowered past

this stage, the carriage is secured to the inner upright.

Figure 8.

4, Remove the carriage chain anchor pins and

When the carriage is lowered, the outer upright lug

disconnect the load chains from the carriage.

engages and rotates the left rear latch, unlocking the left

rear latch, When the right rear latch is free to rotate, so

5., Hoist the upright free of the truck and at the

is the front latch. The front latch rotates and the

same time guide the carriage out of the bottom of the

carriage lug is disengaged as the carriage continues to

uprights.

lower,

C. DISASSEMBLY (Figs. 6 and 7)

B. REMOVAL

With the upright assembly in a horizontal

1. Be sure hoist cylinder is completely collapsed.

position, remove the snap ring from the front of each

Disconnect the pressure hose from hoist cylinder and

carriage chain anchor. Push the anchors out of the

uncouple the cylinder bleed back hose.

carriage crossmember.

2. Remove the front wheels. Fasten an overhead hoist

2. Using a sling and a hoist, sling the carriage and

to the uprights to support and move them. All uprights

pull it out of the inner upright.

should be secured together.

Remove the hanger

(Fig. 9)

bearing caps, noting the shims located behind them.

(Fig. 8)

3. Disconnect the tilt cylinders from the uprights by

removing the pin retainers and the anchor pins (Fig. 8).

Figure 9.

B-173