BHI HydroRam HK300S, Operations Manual & Parts List

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BHI
Best Hammer Industries
- 33 -
Cause Required action
1
Oil flow insufficient
Adjust the speed of engine
2 Couplings of hydraulic pipe lines are loose
Tighten.
3 Shut-off Valve is partially close. Open it fully
4 Pressure in head cap is low Charge the gas and adjust the pressure.
5
tool shank is seizing or
tool dose not work smoothly
Check the surface of the Tool and Round
Bushing. If the tool is seizing, repair with
grinder
6 Oil temperature exceeds 80°C(186°F)
Check and refill the hydraulic oil
7
Flow resistance of oil filter and
oil cooler are high
Wash or replace oil filter and cooler
8 Inner diameter of return line is small
Replace return line more than 25mm of
inner diameter
9 Return pressure is high Check the pressure
10 Return line connects to control valve.
Return line must be connected directly
to the oil tank or filter
11
Defective diaphragm of accumulator.
Lots of tremor of the hose can make damage at
the entrance of hammer!
Replace the diaphragm
12 Hydraulic oil pressure is low
Check the pressure and if it is red, replace
with new pressure relief cartridge.
․
Oil leakage
Cause Required action
1 Shut-off valve is not open completely Open shut-off valve
2
Defective couplings of hydraulic pipe lines Replace couplings defected
3 Poor main pump performance Call authorized service man
․
Reduced blow power and frequency
Cause Required action
1 Loose screw connection. Defective O-Ring
Tighten screw connection.
Replace with new one
2 Loose extension bolt of accumulator
Replace O-ring and Back-up ring.
Tighten extension bolt
3 Dust seal is worn
Replace seal and grease the tool every
2 or 3 hours during operation