Group 34, Uprights
34-4-10 •
Carriage and Upright Roller Clearance Checks and Shim Adjustments
SM 765, Nov ’06
7. Jack up the truck only enough to remove the blocking
and slowly lower the truck so that its full weight is on
the floor.
8. Replace the carriage and forks.
9. Test the upright lift and tilt functions; make sure all
upright components work correctly and smoothly.
Check for overshimming as described in the next
subsection. Repeat the load test to make sure the
upright works correctly under load. When you are
sure all components are operating correctly, perform
the chain adjustment checks in Section 3 before
returning the truck to service.
Overshimming
Use these steps to check for overshimming:
1. With the forks removed, lift the upright to maximum
fork height.
2. Slowly lower the upright.
• The carriage should not bind or hang up at any
point along the rails.
• If the carriage binds or hangs up, and the rails are
not clogged with grease or debris, the carriage
requires reshimming. See “Troubleshooting” for
other mis-staging problems.
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