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
5. EXCESSIVE VIBRATION
Loose, Worn or Defective Engine Mounts Tighten all mounting bolts securely. Replace components
as necessary.
Loose Pulley and Damper Retighten
Loose or Worn Coupling on Inspect, align and tighten coupling to driven equipment.
Driven Equipment
Defective Damper or Pulley Replace damper or pulley.
Misfiring See ITEM 2.
- APPENDIX A -
CUMMINS 6CT8.3 ENGINE
A-3. Engine Troubleshooting (Continued...)
Possible Causes
Remedy
3. ERRATIC ENGINE SPEED
Governor Control Linkage
Governor Failure
Adjust external linkage to obtain sufficient travel. Replace if damaged, bent,
or linkage is too short.
Look for damaged or broken springs, linkage, or other components.
Determine if the rack can be moved manually. If any distress is noted in any
of these components, replace as necessary.*
4. LOW POWER
Fuel Nozzle Failure
Poor Quality Fuel
Turbocharger Carboned or Otherwise
Dragging
Leaks in Air Induction System
Incorrect Fuel Injection Timing
Excessive Valve Lash
Low Fuel Supply Pressure
Run the engine at the speed where the defect is most pronounced.
Momentarily loosen the fuel line nut on the injection pump to "cut out" that
cylinder. Check each cylinder in this manner. If one is found where
loosening makes no difference in irregular operation, the pump and nozzle
for only that cylinder need be tested.
Drain, clean and bleed fuel system. Replace fuel filter. Fill fuel tank with
proper grade of fuel.
lnspect and repair or replace turbo charger as necessary.*
Check inlet manifold pressure. Check air cleaner for restriction.
See your authorized dealer.
Set to specified clearance.
Check fuel supply line for leaks or kinks, air in fuel system, sticking, binding
or defective fuel bypass valve. Replace fuel filter. Check fuel pressure.
Fuel transfer pump should supply fuel to 20 to 30 PSI(l.4 to 2.1kg/CM2)to
the engine when the engine is fully loaded.
Page A-16
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