7032 SOUTH 196th - KENT, WA 98032 - (253) 872-0141 / FAX (253) 872-8710
OPERATION / MAINTENANCE MANUAL
MODEL 50 VIBRATORY HAMMER WITH MODEL 260 POWER UNIT
IV. PREPARATION AND OPERATION (Continued...)
IV-7.
Relief Valve Settings Prior to Operation - Model 260
IV-8.
Shut-down Procedures
The following procedures explain what to do with the power unit to correctly shut down the APE Model
50 Vibratory Hammer.
1.) Stop the vibrator. (Refer to the power unit operating manual .)
2.) Allow the diesel engine to run for five minutes at 1000 engine rpms.
3.) Reduce engine speed to low idle for about 60 seconds.
4.) Shut engine off by turning off the main power switch.
WARNING: Do not shut the power unit engine down while the vibrator is clamped onto a pile.
The clamp check valve will slowly bleed off if there is any leakage in the hose lines or worn
clamp seals in the cylinder that moves the jaw open or closed.
1. Do not hook up quick disconnects. Start engine and bring to full rpm.
2. Check CIamp relief valve setting by turning clamp switch to "open" and holding it
there while you read the clamp "open" gauge on the panel. The gauge should read 3300
psi. If it is not coming up to pressure then set the relief valve (FACTORY AUTHORIZED
PERSONNEL ONLY) by loosening the lock nut and turning the knob in slowly until the
proper pressure is reached. Turn in to increase pressure and out to decrease pressure.
Lock the locknut and re-check the pressure to make sure that you did not move the
setting while you were tightening the lock nut. When you turn the clamp switch to "open"
and hold it, a small light on the solenoid comes on to show that there is power to the
solenoid. The solenoid light should go off when you turn it to the "Off" position.
3. Check the clamp pressure switch setting. Turn the clamp to "close" and see if the green
light comes on indicating proper clamp pressure. If it does then everything is fine. Clamp
pressure should read 3000 psi and light on pendant or panel should be lit. To set the
pressure switch, turn the set screw out using a screwdriver. Turn it out a few turns counter
clockwise. Turn clamp switch to "open" for a second. Make sure the clamp open gauge
reads 3300 psi. If it does not, then go back to step 2 and set the clamp relief valve first.
Knowing that your clamp relief valve is set to 3300 psi, turn the clamp switch to "closed."
Green light should be on and clamp pressure should be very low or notreading at all. If
green light is on then slowly turn the pressure switch screw clockwise with a screw driver
until the pressure is 3000 psi or 300 psi below the clamp relief valve setting. Always set
the clamp pressure switch 300 psi below the clamp relief valve settingor the light will never
come on. We do not want the clamp pump to pump oil over therelief valve because this
will cause heat and take away 25 horsepower from the engine.Call the factory if you have
any questions. (800) 248-8498
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