CHAPTER 2
GENERAL MAINTENANCE INSTRUCTIONS
Section I. SPECIAL TOOLS AND EQUIPMENT
5. Special Tools and Equipment
No special tools or equipment is required by field and depot maintenance personnel for performing maintenance on the
jaw crusher.
6. Field and Depot Maintenance Repair Parts
Field and depot maintenance repair parts are listed and illustrated in TM 53820-205-35P/2.
7. Specially Designed Tools and Equipment
No specially designed tools or equipment is required for maintenance of the jaw crusher.
Section II. TROUBLESHOOTING
8. General
This section provides information useful in diagnosing and correcting unsatisfactory operation or failure of the jaw crusher
or, any of its components. Each trouble symptom stated 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
Probable cause
Possible remedy
Shaft bearings worn or damaged.................................................Replace defective starter (pars. 53-55).
Brush spring broken or defective ................................................. Replace broken or defective brush spring (pars. 53-55).
Field pole loose ..........................................................................Tighten the field pole screws (pars. 53-55).
10. Engine is Hard to Start or Fails to Start
Probable cause
Possible remedy
Cylinder head gasket leaks..........................................................Replace the cylinder head gasket (pars. 77-79).
Energy cell leaks . ....................................................................... Clean or replace energy cell (pars. 77-79).
Valves burned or sticking ............................................................ Reface or replace valves (pars. 77-79).
Valve springs weak or broken ...................................................... Replace valve springs (pars. 77-79).
Piston rings worn or broken ......................................................... Replace piston rings (pars. 97-99).
Pistons and sleeves worn ............................................................ Replace pistons and sleeves (pars. 97-99).
11. Engine Misses or Runs Erratically
Probable cause
Possible remedy
Fuel injectors faulty -...................................................................Test fuel injectors (par. 63). Repair or replace faulty
fuel injectors (pars. 61-63).
Cylinder compression low ...........................................................Inspect for broken pistons and worn or broken rings
(pars. 97-99). Inspect for scored sleeves (pars. 97-
99). Replace pistons and rings (pars. 97-9). Replace
damaged sleeves (pars. 97-99).
Exhaust valves sticking or burned ............................................... Replace the exhaust valves and seats (pars. 77-79).
AGO 8456A
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