Bradco 509 Betreibershandbuch PDF herunterladen (Seite 39)

TROUBLESHOOTING

3912 1-25-06-3

PROBLEM POSSIBLE CAUSE REMEDY

Backhoe fails to hold up Broken or leaking lines Replace broken hose and check

load for leaks

 Dirtyoil Drainandrelloil,replacelter

Oil leaking past cylinder Replace packings

packings

Oil leaking past control valve Replace or repair worn section

Faulty relief valve Clean or replace

Oilheating Dirtyoil Drainandrelloil,replacelter

Air entering suction line Eliminate leaks

to pump

 Partiallypluggedinletlter Cleanlterelement

Control valve held open Return control to neutral position

too long when not in use

Worn pump Replace pump

Relief valve set too low Set valve correctly

Oil too light in hot weather Use recommended oil

Engine running too fast Reduce throttle

Damaged oil lines Replace damaged lines

Poor operating technique Learn smooth operating methods

 causingexcessiveoilow

over relief valve

Damaged O-rings between Repair control valve

valve sections (Gresen)

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Bradco 509 Betreibershandbuch Seite 39