GENERAL MAINTENANCE INSTRUCTIONS
Section I. SPECIAL TOOLS AND EQUIPMENT
5. Special Tools and Equipment
No special tools or equipment are required by field and depot maintenance personnel for per-
forming maintenance on the roll crusher.
6. Field and Depot Maintenance Repair Parts
Field and depot maintenance repair parts are listed and illustrated in TM 5-3820-205-35P/1.
7. Specially Designed Tools and Equipment
No specially designed tools or equipment are required for maintenance of the roll crusher.
Section II. TROUBLESHOOTING
8. General
This section provides information useful in diagnosing and correcting unsatisfactory operation
or failure of the roll crusher or any of its components. Each trouble symnptom is followed by a
list of probable causes of trouble. The possible remedy recommended is described opposite the
probable cause.
9. Starting Motor Fails To Crank Engine
Possible remedy
Probable causes
Shaft bearings worn or damaged--------------------------------Replace defective starter (pars. 54-56).
Brush springs broken or defective------------------------------Replace broken or defective brush springs (pars. 64-
56).
Field pole loose------------------------------------------------------Tighten the field pole screws (pars. 54-56).
10. Engine Is Hard To Start or Fails To Start
Probable causes
Possible remedy
Cylinder head gasket leaks----------------------------------------Replace the cylinder head gasket (pars. 78-80).
Energy cell leaks-----------------------------------------------------Clean or replace energy cell (pars. 78-80).
Valves burned or sticking-----------------------------------------Reface or replace valves (pars. 78-80).
Vaive spring weak or broken-----------------------------------Replace valve spring (pars. 78-80).
Piston rings worn or broken------------------------------------Replace piston rings (pars. 98-100).
Pistons and sleeves worn------------------------------------------Replace pistons and sleeves (pars. 98-100).
11. Engine Misses or Runs Erratically
Probable causes
Possible remedy
Fuel injectors faulty------------------------------------------------Test fuel injector (par. 64). Repair or replace faulty
fuel injectors (pars. 62-64).
Cylinder compression low-----------------------------------------Inspect for broken pistons and worn or broken rings
(pars. 98-100). Inspect for scored sleeves (pars 98-
100). Replace pistons and rings (par. 98-100).
Replace damaged sleeves (pars. 98-100).
Exhaust valves sticking or burned------------------------------Replace the exhaust valves and seats (pars. 78-80).
AGO 8408A
