Operator's Manual

Troubleshooting

Problem

PossibleCauseCorrectiveAction

1.Ahydraulicttingisnotcompletely

connected.

1.Checkandtightenallttings.

2.Ahydraulicttingisdamaged.2.Replacethedamagedtting.

3.Thereisanobstructioninahydraulic

hose.

3.Findandremovetheobstruction.

4.Anauxiliaryvalveonthemachineis

notopening.

4.Repairthevalve.

5.Theboom-endbearinghasfailed.

5.Replacethebearing.

6.Thediggingchainistootight.6.Adjustthetensiononthediggingchain.

7.Thereissandbuildupinthetoothroot

ofthedrivesprocket.

7.Raisethetrencher,runthechain

backward,thendecreasethechain

tension.

Thechaindoesnotturn.

8.Thehydraulicmotororthechaindrive

hasfailed.

8.ContactanAuthorizedServiceDealer.

1.Theteethareworn.1.Replaceanywornteeth.

2.Thereisarestrictioninahydraulic

hose.

2.Checkthehosesandrepairany

problemsfound.

3.Thehydraulicsystemistoohot.

3.Shutdownthesystemandallowitto

cool.

Thetrencherdoesnotdigfastenough.

4.Thereliefvalveissetbelow

specications.

4.ContactanAuthorizedServiceDealer.

Thechainturnsinthewrongdirection.1.Thehydraulichosesarereversed.1.Disconnectthereversedhosesand

installthemcorrectly.

1.Thellplugisleaking.1.Ifthereismoisturearoundthewheel

plug,changetheoilandreplacethe

plugandtheplugo-ring.

2.TheO-ringonthemotorhasfailed.2.ContactanAuthorizedServiceDealer.

Thebearingcaselubeiscontaminated.

3.Thesealhasfailed.3.ContactanAuthorizedServiceDealer.