Starting And Warming Up The Engine Iii-3; Warming Hydraulic Oil Iii-3 - J&M 220 Operating And Maintenance Manual

MODEL 220
HYDRAULIC
IMPACT HAMMER
III. OPERATING INSTRUCTIONS
C. STARTING AND WARMING UP THE ENGINE
Before starting the engine, read the Caterpillar operation guide carefully. Follow the
engine starting, operation and maintenance procedures in that manual.
The diesel engine should not be started if the temperature of the hydraulic oil is
below 0°F (-18°C). The temperature may be read at the gage on the hydraulic
reservoir. If ambient temperatures below 0°F (-18°C) are anticipated, an immersion
heater for the hydraulic oil is available. Consult J&M for details.
The MAIN SWITCH on the control panel should be ON. Turn the hammer drive
FORWARD/REVERSE switch on the control panel to OFF.
NOTE: Engine will not start unless the hammer switch is in the OFF position.
Pull out the ENGINE THROTTLE about half way.
Hold the shutdown reset button in and turn the ENGINE START SWITCH to START
position. Hold the reset button in until the oil pressure reaches 30 psi 2 Bar. If the
engine fails to start after 30 seconds of cranking, allow the starter to cool for two
minutes before repeating the starting procedure.
As the engine starts, release the ENGINE START SWITCH. It will return to the
RUN position.
Adjust the throttle until the engine is running at 1500 rpm and allow the engine to
warm-up for five minutes.
Allow the temperature of the hydraulic oil to come up to at least 30°F (17°C) before
starting the hammer.
D. WARMING HYDRAULIC OIL
The hydraulic hammer should not be operated at full pressure if the temperature of
the hydraulic oil is below 60°F (16°C). The HYDRAULIC FLUID COLD light on the
control panel will be lit if the oil temperature is below 60°F (16°C). Also, check the
temperature gage on the reservoir.
If the temperature of the hydraulic oil is below 60°F (16°C), set the diesel engine at
2310 RPM and run the hammer until the temperature of the hydraulic oil exceeds
60°F (16°C). The HYDRAULIC FLUID COLD light will then go out. The engine rpm
may now be set to the desired setting.
CAUTION: Do not operate the hammer if the hydraulic oil temperature exceeds
160°F (71°C) as this may damage hydraulic components.
III-3