SkyTrak 8042 Service Manual - Manual (Page 235)

Boom
3.174 Model 8042, 10042, 10054 Legacy Rev. 03/04
3.11 TROUBLESHOOTING
This section provides an easy reference guide covering
the most common problems that occur during operation
of the boom.
Boom Troubleshooting
Problem Cause Remedy
1. Boom will not extend or
retract.
1. Broken hydraulic hose(s) or
tube(s) and/or connections
leaking.
2. Extend/Retract hydraulic system
not operating properly.
3. Faulty Extend/Retract cylinder.
4. Broken chains or anchors.
1. Locate break, replace hose(s)
or tube(s), tighten connections.
2. Refer to Section 8, “Hydraulic
System.”
3. Repair cylinder (Refer to Section
8.13.6, “Extend/Retract
Cylinder.”)
4. Replace chains as needed. Refer
to Section 3.4.5, “Boom Extend
and Retract Chains Removal
and Replacement,” - 8042 &
10042 or Section 3.7.6, “Boom
Extend and Retract Chains
Removal and Replacement,” -
10054.
2. Boom will not fully extend
(10054 only).
1. Extend/Retract hydraulic system
not operating properly.
1. Refer to Section 8, “Hydraulic
System.”
3. Boom shifts to right or left
when extending.
1. Boom pivot pin improperly
shimmed.
2. Incorrect wear pad gap or
shimming, or wear pads
excessively worn.
1. Re-shim the boom to a maximum
total gap of .10" (2.5 mm) with
shims distributed evenly on both
sides of the boom pivot pin.
2. Shim wear pads to correct gap.
Replace wear pads as needed.
Refer to Section 3.9.2, “Boom
Wear Pad Replacement.”
4. Excessive boom pivot pin
noise and/or wear.
1. Insufficient lubrication.
2. Worn 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.)