APE 50 - Premature Engine Wear; Coolant in Engine Lubricating Oil

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
Page A-19
A-3. Engine Troubleshooting (Continued...)
Possible Causes Remedy
13. VALVE SPRING RETAINER FREE
Broken Keepers Extensive engine damage may result from dropped valve.
Replace all damaged parts.*
Broken Valve Spring Replace valve spring.*
Broken Valve Replace valve and any other damaged parts.*
14. SLOBBER
Excessive Valve Guide Wear Recondition cylinder head assembly.*
Excessive Lubricating Oil in Valve Check rocker arm shaft and plugs to assure that they are
Compartment. in place.
Worn Piston Rings and/or Liners Inspect and replace components as necessary.*
15. VALVE LASH CLOSE-UP
Valve Face and/or Seat Wear Adjust valves to specified clearance.
Recondition cylinder head.
16. PREMATURE ENGINE WEAR
Intake Piping Failure (Air Cleaner) Inspect all gaskets and piping for leaks. Repair all leaks.
Excessive Fuel Dilution of Replace leaking components. This will probably be ac-
Lubricating Oil companied by high fuel consumption and low engine oil pressure.
Tighten fuel injection line fittings under valve cover.
Dirt in Lubricating Oil Locate and correct source of dirt entry. Change lubricating oil.
Change oil filter.
17. COOLANT IN ENGINE LUBRICATING OIL
Oil Cooler Failure Replace oil cooler core.
Cylinder Head Gasket Failure Replace gasket. Maintain proper torque on cylinder head bolts.
Cracked or Defective Cylinder Head Replace cylinder head.*
Cracked or Defective Cylinder Block Replace cylinder block.*
*Authorized dealers are equipped with the necessary tools and personnel familiar with disassembly and assembly
procedures to perform these serviced.