Inner Upright Raises Before End Of Free-Lift Travel

UPRIGHTS

TROUBLESHOOTING

CAUSE

REMEDY

4. Strip bearings or thrust plugs improperly adjusted or

4. Delete shims from strip bearings until smooth operation

insufficient lubrication.

is attained. Unscrew each thrust plug equally, until

smooth operation is attained. Lubricate sliding surfaces.

5. Too many shims behind load rollers on carriage.

5. Delete shims until smooth operation is attained.

6. Latching mechanism improperly adjusted. This

6, Check: Adjustment, latches and bushings for wear,

condition is sometimes accompanied with a scraping

allen-head screws on carriage and cylinder for wear or

and/or popping noises

looseness. Repair as necessary. Add or delete pad-

bracket shims as necessary to maintain proper latch-to-

latch clearance. Adjust horizontal clearance with thrust

plugs.

Inner Upright Raises Before End Of Free-Lift

Travel

1. Allen-head screw on upper crossmember of outer

1. Install new screw.

upright missing or broken.

2. Rear latch broken or turning on shaft.

2. Install new latch and/or pin.

3. Shaft turning in front latch (nearest to channel)

3. Install new latch and/or pin.

or latch broken

4. Latching mechanism not locking Free-up

4. Check and replace spring if necessary.

mechanism. Add or delete pad-to-bracket shims.

Adjust horizontal clearance between latches. Check

for worn or broken parts; replace as necessary.

NOTE

Whenever the latching mechanism is found to be broken or worn excessively, always check

uprights and carriage load rollers for binding and maladjustments.

Uprights Fail To Lower Or Will Not Lower

Completely (No Load)

1. Uprights binding, too many shims between strip

1. Delete shims as necessary to allow smooth lowering.

bearings and uprights or carriage and load rollers.

B-192