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
VI. VIBRO TROUBLE-SHOOTING
The following table lists some possible problems, causes and solutions. If a serious problem should
occur, contact the factory for additional service information.
Table 6-A. Vibro Trouble-Shooting Index
ITEM PROBLEM ITEM PROBLEM
1. Oil Blowing Out Between Gearbox and Hydraulic Motor
Possible Cause
Remedy
The breather may be plugged or dam-
aged.
O-rings may not be sealing properly
Oil level may be too high.
Oil may be too dirty.
The seal between the gearbox and the
hydraulic motor may be bad and is
allowing oil to flow directly into the gear-
box.
Blocked flow in case drain line.
Valve may be bad.
One or both motors may be damaged.
2. Vibro Gearbox is Too Hot
3. Excess Oil in the Gearbox
4. Oil Blowing out Pop-Off Valve
Remove the breather and clean it. If the breather is damaged replace it.
Check the o-rings between the gearbox top plate and the motor. Clean the
seal areas and replace the o-rings if needed.
Make sure the gearbox is level. Remove the oil over fill plug (located on the
gearbox next to the sight gage). If oil flows out, the oil level is too high and
must be lowered.
Look at oil in the sight gage. If the oil is black or milky it must be replaced. If
you are still not sure, remove the case drain plug and check the oil.
Remove the motor from the face of the gearbox. Check and clean the seal
area, replace the seal if it looks bad.
Check case drain line to see if it is pinched.
Check case drain line for proper connection tightness.
Remove and check the valve. Replace the valve if needed.
Remove the motors and have them checked for damage. Replace if needed.
1. Oil Blowing Out Between Gear
box and Hydraulic Motor
2. Vibro Gearbox is Too Hot
3. Excess Oil in the Gearbox
4. Oil Blowing Out From Pop-Off
Valve
5. Opening and Closing Clamp
Jaws Seems Spongy or Slow
6. Vibrator Won't Start When Start
Button is Engaged
7. Clamp Won't Open When Clamp
Open Switch is Engaged
8. Vibro Won't Come Up to Normal
Operating Speed
9. Vibro Won't Stop When Stop
Button is Engaged
Page 6-1
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