TROUBLE SHOOTING

Figure 21-1ntake and Exhaust Manifold Installed

on the cylinder head and install the four bolts, one stud, fiat washers and nuts. Tighten the attaching bolts and nuts evenly and alternately to 40-50 ft. lbs, torque.

4. Place a clamp on the outlet end of the muffler.

Instan the muffler outlet support elbow in the muffler with the two mounting bolts in alignment with the hole in the fuel tank support bracket and cylinder head. Install the two elbow attaching bolts, tighten the muffler front damp. 5. Secure the heat shield to the fuel tank supports with the four attaching bolts.

NOTE: The nut, bolt and lockwasher is used in the u.pper hale. 6. Position the outlet pipe, rain cap assembly and clamp on the outlet support elbow. Tighten the clamp to secure the outlet pipe. 7. Connect the wire to the manifold rear heater. 8. Install a new gasket on the intake manifold, then install the air cleaner.

The trouble shooting procedures contained in this section pertain only to the diesel fuel system and component parts. The diesel fuel system consists of the aif cleaner, the fuel tank, fuel filter, fuel injection pump, fuel injectors and the connecting fuel lines.

It cannot be stressed too strongly for keeping the diesel fuel system free of dirt. Most all of the troubles in the system can be contributed to dirt.

\...---- FUEl RETURN UNE

FUEL INJECTION PUMP

Figure 22-Diesei Fuel System

A. Engine Win Not Start

L Check the fuel tank to make sure that there is fuel in the tank, that the fuel shut-off valve is in the "ON" position, and that the hand throttle is open. 2. Disconnect the air cleaner tube from the air cleaner. If the engine will start with the air cleaner disconnected, dean the air cleaner.

3. Disconnect the fuel line at (D), Figure 22. If fuel does not flow freely from the line, check for a dogged fuel filter or an obstructed line between this point and the tank. Make the necessary repairs, and bleed the fuel system. 4, If the engine stilI won't start, remove the timing

inspection window cover (F) from the fuel injec1:ion pump. Crank the engine with the starter and observe the injection pump rotor. If the rotor does not turn, the pump drive shaft may be broken, or the pump drive gear and/or engine camshaft gears can be stripped, Figure 22. Make the necessary repairs and time the engine. 5. If the engine still win not start, loosen the nut (A) at each injector. Crank the engine with the starter to make sure that fuel is reaching the injectors. If fuel is reaching the injectors, remove them from the cylinder head and rebuild or replace them as required. 6. If the engine still won't start, refer to the EN-

GINE TROUBLE SHOOTING SECTION.