Lull 944E-42 Service Manual - Manual (Page 103)

3.55 Model 644E-42/944E-42 Rev. 6/04
Boom
11. Excessive chain wear. 1. Improper chain adjustment.
2. Chain sheave(s) not properly
lubricated.
3. Chain sheave(s) not rotating
freely.
4. Improper chain lubrication.
1. Adjust to correct tension. (Refer
to Section 3.4.4, “Boom Chain
Tension Adjustment.”) Replace
chain(s) as needed. (Refer to
Section 3.4.5, “Boom Extend
and Retract Chains Removal
and Replacement.”)
2. Lubricate chain sheave. (Refer
to Section 3.4.2, “Chain
Lubrication.”)
3. Lubricate chain sheave. (Refer
to Section 3.4.2, “Chain
Lubrication.”) Repair or replace
chain sheave(s) as needed.
4. lubricate at regular intervals
(Refer to the appropriate
Owners/Operators Manual for
lubrication information.)
Replace chain(s) as needed.
(Refer to Section 3.4.5, “Boom
Extend and Retract Chains
Removal and Replacement.”)
Boom Troubleshooting (Continued)
Problem Cause Remedy