Lull 944E-42, Service Manual

Page: 831 / 844

11.31 Model 644E-42/944E-42 Rev. 6/04
Transfer Carriage
3. Transfer carriage shifts to
right or left when extending.
1. Transfer carriage rollers
improperly shimmed.
2. Incorrect front or rear wear pad
gap or shimming, or wear pads
excessively worn.
1. Re-shim the transfer carriage.
(Refer to Section 11.3.11, “Rear
Roller Shimming,” and Section
11.3.13, “Front Roller
Shimming.”)
2. Shim wear pads to correct gap.
(Refer to Section 11.3.4, “Rear
Wear Pad Shimming,” and
Section 11.3.8, “Front Upstop
Wear Pad Shimming.”)
4. Excessive transfer carriage
roller pin noise and/or wear.
1. Worn bearing(s).
2. Excessive dirt or contamination
in roller areas.
1. Replace bearing(s). (Refer to
Section 11.3.15, “Front Roller
and Bushing Replacement,” and
Section 11.3.16, “Rear Roller
and Bushing Replacement.”)
2. Clean roller areas.
5. Premature transfer carriage
pad wear.
1. Incorrect front or rear wear pad
gap.
2. Rapid cycle times of transfer
carriage with heavy loads.
3. Operating in extremely dusty/
abrasive conditions.
1. Shim wear pads to correct gap.
(Refer to Section 11.3.4, “Rear
Wear Pad Shimming,” and
Section 11.3.8, “Front Upstop
Wear Pad Shimming.”)
2. Reduce transfer carriage cycle
times or work with lighter loads.
3. Clean wear pad and transfer
roller sliding surfaces frequently.
6. Transfer carriage drifts
forward on it’s own.
1. Transfer carriage cylinder
malfunctioning.
2. Transfer carriage cylinder
control valve malfunctioning.
1. Replace transfer carriage
cylinder (Refer to Section
11.3.19, “Transfer Cylinder
Replacement.”)
2. Replace transfer carriage
cylinder control valve. (Refer to
Section 8, “Hydraulic System.”)
11.4.1 Transfer Carriage Troubleshooting
Problem Cause Remedy