JLG 4017PS Service Manual - Manual (Page 83)

3-45 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Boom
9. Auxiliary hydraulics will not
operate.
1. Auxiliary hydraulic system not
operating properly.
1. Refer to Section , “Running H/F
1.”
10. Excessive chain wear. 1. Improper chain adjustment. 1. Adjust to correct tension. Refer
to Section 3.16, “Boom Extend
and Retract Chains - 4014PS &
4017PS.”- Replace chains as
needed.
2. Chain sheave(s) not properly
lubricated.
2. Lubricate chain sheave. Refer
to Section 2.6, “Service and
Maintenance Schedules.”
3. Chain sheave(s) not rotating
freely.
3. Lubricate chain sheave. Refer
to Section 2.6, “Service and
Maintenance Schedules.”
Repair or replace chain
sheave(s) as needed.
4. Improper chain lubrication. 4. Lubricate at regular intervals.
Refer to Section 2.6, “Service
and Maintenance Schedules.”
Replace chains as needed.
Problem Possible Causes Remedy