Carriage Load Rollers Removal and Installation
4500 SRM 971
Carriage Load Rollers Removal and Installation
For the following procedures, refer to Figure 5 and
Figure 6.
1.
Remove the reach assembly from the mast as-
sembly to remove and install the carriage load
rollers. See Reach Assembly Removal and Instal-
lation.
2.
Remove the jam nuts and setscrews for the load
rollers.
3.
If necessary, replace the wear plugs by pushing
at the back of the wear plug.
1.
LOAD ROLLER
2.
WEAR PLUG
3.
SNAP RING
4.
SETSCREW
5.
JAM NUT
6.
STUB SHAFT
7.
MAST, REACH,
OR CARRIAGE
CHANNEL
Figure 5. Load Roller and Wear Plug Assembly
WARNING
Lift chains, hoses, and cables can roll over the
sheaves to fall and cause an injury if the ends
are not fastened. Keep control of the ends of
the lift chains, hoses, and cables as they are re-
moved. Use wire to temporarily connect the
ends of the lift chains, hoses, or cable to the
masts.
4.
On three-stage masts, remove the safety chains
installed in Step 4. Lower the reach assembly
for access to the chain anchors at the back of the
free-lift cylinder. Use safety chains to fasten the
movable member of the mast to the outer weld-
ment so it cannot move. Move the key to the OFF
position and disconnect the battery.
1.
LOAD ROLLER WITH SNAP RING REMOVED
2.
PRY BAR
3.
MAST, REACH, OR CARRIAGE
4.
SIDE ROLLER
Figure 6. Removing Load Roller
5.
Install lifting eyes in the reach assembly for
chains or slings. Fasten chains or slings to the
reach assembly so the reach assembly cannot
tip as it is removed from the mast weldment.
Fasten the chains to the lifting eyes. Use the
crane to raise the reach assembly so the lift
chains become loose.
WARNING
Be careful when removing or installing snap
rings.
These snap rings are large and can
come loose during removal or installation with
enough force to cause an injury. Always use
the correct snap ring pliers, and wear eye and
face protection during removal or installation.
8
