SkyTrak 8042 Service Manual - Manual (Page 237)

Boom
3.176 Model 8042, 10042, 10054 Legacy Rev. 03/04
7. Boom will not raise or lower. 1. Broken hydraulic hoses or tubes
and/or connection leaks.
2. Lift/Lower hydraulic system not
operating properly.
3. Faulty Lift/Lower cylinders.
4. Seized boom pivot pin bearing.
1. Locate break, replace hose(s)
or tube(s), tighten connections.
2. Refer to Section 8, “Hydraulic
System.”
3. Repair cylinder. (Refer to
Section 8.13.7, “Lift/Lower
Cylinder.”)
4. Replace bearing.
8. Excessive Lift/Lower cylinder
pivot pin noise and/or wear.
1. Insufficient lubrication.
2. Worn self-aligning bearing(s).
1. Lubricate at regular intervals.
(Refer to appropriate owners
manual for lubrication points.)
Replace worn pins as needed.
Refer to Section 3.3.4, “Outer
Boom Installation.”
2. Replace bearing(s) and
lubricate at regular intervals.
(Refer to appropriate owners
manual for lubrication points.)
9. Rapid boom pad wear. 1. Incorrect wear pad gap.
2. Rapid cycle times with heavy
loads.
3. Contaminated, corroded or
rusted wear pad sliding
surfaces.
4. Operating in extremely dusty/
abrasive conditions.
5. Check wear pad gaps and
correct as needed. Refer to
Section 3.9.2, “Boom Wear Pad
Replacement.”
6. Reduce cycle times.
7. Remove contamination and/or
corrosion from wear pad sliding
surfaces and lubricate. If the
surfaces cannot be
reconditioned, replace the boom
section(s).
8. Clean equipment frequently.
10. Auxiliary hydraulics will not
operate.
1. Auxiliary hydraulic system not
operating properly.
1. Refer to Section 8, “Hydraulic
System.”
Boom Troubleshooting (Continued)
Problem Cause Remedy