SkyTrak 6036 Service Manual - Manual (Page 253)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-103
Trouble Probable Cause Remedy
Directional Control
Valve Difficult to Shift
Directional Control
Valve Does Not
Return
Shifting of Operator
Lever Fails to Cause
Spool in Directional
Control Valve to Shift
Binding valve cable linkage
Broken internal parts
Scored valve body bore caus-
ing leakage between spool
and body
Broken centering spring
Too much friction in linkage
connecting valve to operating
lever
Dirt in valve
Sheared pin in connection to
valve
Check main control valve for
broken spool
Check cable linkage and lubricate or free up as
required.
Disassemble control valve and replace broken
parts (para 9.6).
Inspect valve body and spool and replace valve
section if scored (para 9.6).
Disassemble valve and replace broken spring
(para 9.6).
Clean and lubricate the linkage and make sure it
operates freely.
Disassemble and clean control valve thoroughly
(par 9.6).
Check all joints for faulty connections.
Replace applicable valve section.