Oshkosh Corporation JERR-DAN 20NGADF6T-LP, Operation And Safety Manual

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Section 6 - Maintenance
5376000207 6-14
P.T.O. FUNCTIONING IMPROPERLY
Problem Cause Solution
Intermittent operation a. Poor Electrical connection a. Check electrical connections
Rattling noise in P.T.O. a. P.T.O. backlash too loose
(Consult P.T.O. Manual)
a. Shims must be removed
Howling noise in P.T.O. a. P.T.O. backlash too tight
(Consult P.T.O. Manual)
a. Shims must be added
Gear oil leak between
P.T.O. and pump a. Defective shaft seal a. Remove and replace
P.T.O. will not engage
or disengage a. Electrical circuit wiring
b. Solenoid Valve
malfunctioning
c. Blown fuse
a. Check/repair electrical wiring
problem circuit.
b. Repair or replace
c. Replace fuse
HYDRAULIC PUMP
Problem Cause Solution
Pump noisy
(Cavitation) a. Low oil supply
b. Thick oil
c. Dirty oil filter
d. Restriction in suction line
e. Pump worn
a. Fill to proper level
b. Fill with proper oil (See chart)
c. Replace filter
d. Clean out and remove
e. Repair or replace
Pump slow or fails to
respond a. Low oil supply
b. Cold Thick Oil
a. Fill to proper level
b. Drain and refill with a low
temperature oil
Oil heating up a. Foreign material lodged in
relief valve filter
b. Using too light oil
c. Dirty oil
d. Oil level too low
e. Pump worn (slippage)
a. Inspect and remove/replace
b. Drain and refill with clean oil
c. Drain, flush and refill with
clean oil/replace filter
d. Fill to proper level
e. Repair or replace