3208 – Fuel Injection Pumps Testing

When fuel injection pumps, sleeves and lifters are removed from the fuel injection pump housing, keep the parts of each fuel injection pump together so they can be installed back in their original location.

Be careful when disassembling fuel injection pumps. Do not damage the surface on the plunger. The plunger, sleeve and barrel for each fuel injection pump are made as a set. Do not put the plunger of one fuel injection pump in the barrel or sleeve of another pump. If one part is worn, install a complete new fuel injection pump assembly. Be careful when putting the plunger in the bore of the barrel or sleeve.

When a fuel injection pump is installed correctly, the plunger is through the sleeve and the adjustment lever is engaged with the groove on the sleeve. The bushing that holds the fuel injection pump in the fuel injection pump housing must be kept tight. Tighten the bushing to 80 ± 7 N·m (60 ± 5 lb ft). Damage to the housing will result if the bushing is too tight. If the bushing is not tight enough, the fuel injection pump will leak.

Air Inlet Pipe

a. Remove the air cleaner leaving the air inlet pipe open as shown.

b. Set the governor control at low idle.

c. Start the engine, and if engine starts to overspeed (run out of control), put a steel plate over the air inlet as shown to stop the engine.

Stopping The Engine

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