Group 34, Uprights
34-7-2 • Fork and Carriage Removal and Replacement SM 765, Nov ’06
4. Lift tips of forks to engage the fork hooks on the
upper carriage fork bar.
5. Remove blocks from under fork.
6. Check fork latches when repositioning forks to upper
carriage fork notches.
Carriage Removal
The carriage should be removed for shimming or when
any service procedure is performed on the upright.
WARNING
!
The procedures for checking, maintaining,
and adjusting uprights, carriages, and forks
involve movement of the components.
• Do not walk or stand under raised forks.
• Keep clear of load and carriage when mak-
ing any check or adjustment.
• Keep your arms and fingers away from
moving parts of the upright.
• Do not reach through open areas of the
upright.
• Always use a prybar to move the upright or
carriage.
Failure to follow these warnings can result in
serious injury.
1. Set upright tilt to 0 degrees (vertical). Raise the car-
riage about 12 in (305 mm).
2. Place a heavy pallet under the forks. Turn the key off.
3. Lower the carriage onto the pallet and keep lowering
(until the primary cylinder is all the way down on
TSUs and Hi-Lo). Before proceeding with the next
step read the following warning.
WARNING
!
You may need to pull on the hoses/cables and
chains while lowering the primary cylinder to
get it all the way down. This is done to create
slack in hoses/cables and chains and to dis-
place as much oil as possible, which will
reduce oil loss when disconnecting hydraulic
lines for auxiliary components.
You may need a helper to hold the control
handle in the lowering position while you pull
on the carriage chains to fully collapse the
primary cylinder (on Hi-Lo & TSUs). When
pulling on the chains to lower the primary
cylinder (on Hi-Lo & TSUs), the ignition
must be off.
4. Once the carriage is fully lowered, clamp the front of
one fork to the pallet to prevent the carriage from
falling over backwards when removed.
5. For carriage auxiliary components, the hose sheave
bracket must be unbolted from the primary cylinder
chain sheave bracket. Move the hose bracket off the
chain bracket.
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