APE 50 - Excessive Black or Gray Smoke; Excessive White or Blue Smoke; Low Engine Oil Pressure

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
- APPENDIX A -
CUMMINS 6CT8.3 ENGINE
Possible Causes Remedy
17. COOLANT IN ENGINE LUBRICATING OIL (Cont'd)
Cylinder Liner Seal Leaking Replace seals.*
Cracked or Defective Cylinder Liners Replace cylinder liners.*
18. EXCESSIVE BLACK OR GRAY SMOKE
Insufficient Combustion Air Check air cleaner for restriction. Check inlet manifold
pressure. Inspect turbocharger for proper operation.
Fuel Nozzle Plugged or Leaking Replace nozzle.
Incorrect Fuel Injection Timing See your authorized dealer.
Fuel Ratio Control Improperly Adjusted Adjust fuel ratio control.*
19. EXCESSIVE WHITE OR BLUE SMOKE
Valve Guides Worn Recondition cylinder head assembly.*
Piston Rings Worn, Stuck or Broken Replace.*
High Crankcase Oil Level Avoid overfilling. Determine cause and drain excess oil.
Misfiring See ITEM 2.
Fuel Injection Pump Timing Wrong See your authorized dealer.
Air in Fuel System Bleed fuel system.
20. LOW ENGINE OIL PRESSURE
Engine Oil Diluted with Fuel Oil Check lip-type seal on fuel transfer pump drive
shaft. Drain crankcase and refill with clean lubricant.
Excessive Crankshaft Bearing Replace bearings and/or crankshaft.* Check oil filter
Clearance operation.
Excessive Timing Gear Bearing Inspect bearings and replace components as
Clearances necessary.
Excessive Rocker Arm Bore or Check lubrication. Replace components as necessary.
Rocker Arm Shaft Wear
Defective Oil Pump Repair or replace.*
Defective Suction Bell Replace.
A-3. Engine Troubleshooting (Continued...)
Page A-20