Priming the Fuel System MACK Engines

MACK the priming pump located the primary fuel filter mounting adapter Prime the fuel system follows:

Danger

Before working inspecting a vehicle, apply the parking brakes, place the transmission neutral and block the wheels prevent the vehicle from Failure can result unexpected vehicle movement and cause severe personal injury

Danger

T o avoid potential fire not service any part the fuel system while the presence sparks hot not service the fuel system while the engine Failure follow these precautions can result a T o guard against burns from direct contact with hot wear adequate protective clothing (face heavy when working a hot

W Arning

NOT work near the fan while the engine The engine fan can engage any time without resulting serious injury Before turning the ignition make sure that one near the

Note: There are bleed nipples that must opened order prime the fuel system.

1 Unlock the primer pump handle pushing the handle downward and then turning

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Unlocking Fuel System Primer Pump Handle

2 Operate the pump handle until pumping fort increases.

Pumping Hand Primer Pump

3

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Note: W ith a fuel system that completely empty , 200 more strokes the pump may necessary properly prime the system.

When the fuel system lock the primer pump handle pushing fully into the housing and turning

4 Start the engine and run 1000 rpm for approximately 5 minutes pur any remaining air from the system.

Note: the engine does not start after performing the above priming procedure, contact your local MACK dealer for assistance.