8-TROUBLESHOOTING
Hydraulicsystems-Troubleshooting
Problem
PossibleCauseCorrection
Allcircuitsfailtooperate.
Pumpdriveinoperative.
Checkandrepairasnecessary.
Lowoillevel.
Checkthelevelandtopup.
Restrictedpumpsuctionline.Inspectthesuctionlineandthetankand
repairasnecessary.
Slowoperationorlossof
powerinallcircuits.
Wornpump.
Makeapumpperformancetest,replace
andresealasnecessary.
Restrictedpumpsuctionline.Inspectthesuctionlineandthetankand
repairasnecessary.
Loadsensingpressurereliefvalveincor-
rectlyadjusted.
Makeasystempressuretest.
Hydraulicspeedsolenoidvalveinopera-
tive.
Makeasystempressuretest.
8-14