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Troubleshooting
Problem
Hydraulic Motor stops running.
Poor performance or reduced effi-
ciency.
Oil leaking around cylinder.
Oil leaking around inlet or return tube
fittings.
Excessive oil in drain bottle, or bottle
needs frequent emptying.
Service
Required Tools
•
Set of allen wrenches
•
Set of socket or box wrenches
•
Adjustable wrench
•
Torque wrench
•
Spanner wrench
•
O-ring pick
•
10-24 unc-2b tap
•
Vise
•
Shallow metal or plastic pan (approx. 12 x 20 in.)
•
Repair Tool 189-305 (see page 14)
•
Thread lubricant
•
Lithium-base grease
•
Fresh Loctiter 242 thread sealant and Loctiter
Primer T or Perma-Locr 115 thread sealant and
Perma-Bondr Surface Conditioner I
•
Chlorinated solvent
312484B
Cause
Worn valve or valve balls (3); broken
valve spring (18).
Broken trip rod (17), spring (12) or
retainers (11).
Worn piston seals (5, 6, 7).
Worn cylinder o-rings (2).
Loose fittings or worn fitting o-rings
(31, 34, and 38).
Worn seals (2, 15, 14, and 49) in bot-
tom cylinder cap.
Troubleshooting
Solution
Repair valve. See page 8.
Repair valve. See page 8.
Repair valve. See page 8.
Replace o-rings. See page 8.
Tighten nuts (27). See page 10.
Replace seals. See page 8.
7
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