10. TROUBLESHOOTING TABLE
This table facilitates identification of the cause of the defect. The manufacturer recommends that the technical service department
is contacted in good time, to obtain instructions for operating and/or adjusting in condition of maximum safety.
RAVAGLIOLI S.p.A. will not accept any responsibility for damage to people, animals and objects caused by manoeuvres by
unauthorised and unqualified personnel.
10.1 Hydraulic wheel free jacks
PROBLEMS
The pumps works but
does not send oil.
The crosspiece works
unloaded but not when
loaded.
The pump reaches
maximum pressure but
does not remain under
pressure.
10.2 Pneumohydraulic wheel free jacks
PROBLEMS
The pump does not start
or stops during the
operation (before
reaching the maximum
pressure).
The pump works but does
not send oil.
Low capacity.
The pump does not
reach the maximum
pressure.
The pump reaches the
maximum pressure but
does remain under
pressure.
Excessive oil leaks from
the air drainage.
Oil tank gets up to
pressure with air and oil
leaks from the valve.
Pump continues to
pump even after the
pedal has been
released.
After a period of disuse,
the pump does not start.
J30
CAUSES
a) Low oil level.
Load limit exceed on the crosspiece.
a)
Piston gaskets damaged.
b)
Insufficient seal on the maximum valve.
c)
Check hydraulic couplings.
a)
b)
Check the delivery valve ball
bearing.
Oil leak from connected
c)
equipment.
CAUSES
a)
Return spring broken.
b)
Air loss, check the piston seal.
a)
Oil level low.
b)
Pump does not prime.
Tank not ventilated.
a)
Insufficient air capacity.
b)
Hydraulic causes:
c)
- Check that the oil filter is not blocked
- Air in the hydraulic circuit
- Check that the ball of the suction valve
works properly
a)
Check the air pressure.
b)
Valve or gaskets faulty or dirty.
a)
Check hydraulic connections.
b)
Dirt under the pedal.
c)
The ball of the delivery valve.
d)
Leakage on the apparatus connected.
a) Gaskets faulty.
a)
Air leakage from the gaskets.
b)
Tank too full of oil.
a)
Gaskets faulty.
b)
Air valve spring broken or too weak.
a) Gaskets faulty.
0434-M001-0
REMEDIES
a) Top up oil level.
Check.
a)
Replace gaskets.
b)
Contact authorized technical services.
c)
Tighten if necessary.
a)
b)
Clean or replace.
Repair and check sealings.
c)
REMEDIES
a)
Replace.
b)
Replace if faulty.
a)
Top up oil
b)
Operate the pedal in the "RELEASE
area at the same time as the air valve to
start the motor.
- Bleed the air out
- Pressurize the tank
CAUTION
Max. pressure 0.5 Bar (7 P.S.I.)
- Remove and clean.
a)
Ventilate tank through the screw on
the plug.
b)
Capacity should be 250 Lt/minute.
c)
- Clean or replace
- Bleed air from the circuit
- If necessary add a copper washer or
replace coupling if the housing is worn.
a)
7 bar (100 P.S.I.) is required.
b)
Clean or replace.
a)
Tighten if necessary.
b)
Clean.
c)
Replace gaskets.
d)
Repair and check seal.
a) Replace.
a)
Replace gaskets.
b)
Check the level.
a)
Replace.
b)
Replace.
a) Replace.
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