Hi-Force AHP2-237BTU Operating Instructions Manual - Page 17

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Hi-Force AHP-BTU air driven hydraulic pumps should be serviced and repaired only by authorised Hi-

Force repair centres. The following table gives possible causes and solutions for common problems.

Problem

1. Air motor / Pump will

not start.

2. Air motor stalls or

struggles to create

pressure.

3. Pump struggles to

build pressure or

maintain pressure

under load.

4. Pump running

incorrectly

5. Noisy Operation

8.0 Troubleshooting

TROUBLESHOOTING GUIDE

Possible Cause

a. Air supply not connected.

b. Low air pressure / volume.

c. Air supply restricted

d. Air motor is damaged, seized or

worn.

a. Low air pressure / volume.

b. Inadequately lubricated air supply.

a. Oil level too low

b. External oil leak in the system.

c. insufficient air pressure causing

pump to stall

d. high pressure/pressure release

valve not closed

e. tube connections loose in the

system.

f1. hydraulic check valves have

developed a leak.

f2. fluid bleeding past the seals in the

hydraulic tensioners.

a. pump appears to be short stroking

and running too fast without

pumping correctly

b. excessive amount of oil or water is

coming through the pump air

exhaust

a. Air leaking into the hydraulic

system.

Operating Instruction Manual:

OM-AHP-BTU-01

Solution

Connect air supply.

check the regulated air pressure is available

via the air pressure gauge (19) mounted on

the FRL unit.

check the air stop/control (5) valve is in the

open position [2b].

Contact your local Hi-Force office / distributor.

Check air supply, including regulator setting

and the size of the connecting hoses to

ensure the correct airflow / pressure

requirements are met. (See section 5.5-5.6)

Check air lubricator levels and make sure the

oil drip rate is correct. (See section 5.7)

Check unit for visible leaks. Add oil as per

section 5.2.

Contact your local Hi-Force office / distributor.

Check air supply, including regulator setting

and the size of the connecting hoses to

ensure the correct airflow / pressure

requirements are met. (See section 5.5-5.6)

close high pressure/pressure release valve (6)

to build up pressure.

check tub connections in the system and

rectify.

Contact your local Hi-Force office / distributor

usually, indicates the air check assembly is

not working as it should be. Contact your local

Hi-Force office/distributor

1. the lubricating unit on the air supply is

delivering too much oil. Adjust accordingly

(see section 5.7)

2. the filtering unit in the air supply is not

functioning correctly. The bowl should be

cleaned periodically to ensure delivery of

clean air to the pump.

3. the fluid being pumped may be leaking past

the seals in the hydraulic cylinder into the air

motor. The unit will require inspection and

repair.

Visually inspect all areas where air might leak

into the hydraulic system.

Serial Numbers:

FROM BQ 9522