Cummins PT Pump Installation and Removal Instructions

Cummins PT Pump Installation and Removal Instructions

-----Removal

• Clean the exterior of the injection pump and mounting surfaces.

• Remove the electrical wire to the fuel shutdown valve.

• Remove the fuel tubing and air tube:

• Fuel drain line from the T-block connection  if equipped

• Gear pump cooling drain 

• Gear pump suction line 

• Fuel supply to the injectors 

• AFC air supply tube 

• Tachometer cable (if used) 

• Remove the two fuel pump support bracket to cylinder block bracket mounting cap screws, if equipped.

• Remove the linkage from the throttle lever.

• Remove the four fuel pump mounting cap screws and the fuel pump.

• Remove the drive coupling spider.

------Inspection

• Clean the gasket surfaces of the pump support and the compressor.

• Inspect the mounting surfaces for damage.

• Inspect the jaw coupling spider and the jaw coupling hub for damage or wear.

-----Installation

• Install the fuel pump drive coupling spider.

• Use a new gasket when installing the fuel pump.

• Install the four 12 point fuel pump mounting cap screws.

• Install the two fuel pump support bracket caps crews to the cylinder block bracket. Tighten the four fuel pump mounting caps crews. Torque Value:  47  n.m  [35 ft-lb]

• Tighten the two support bracket to cylinder block cap screws, if equipped. Torque Value:  47  n.m  [35 ft-lb]

• Install fuel drain from the T-block connection, if equipped 

• Install gear pump cooling drain 

• Install gear pump suction line 

• Install fuel supply to the injectors 

• Install AFC air supply tube, if equipped 

• Install Tachometer cable (if used) 

• Install the electric wire to the fuel shutoff valve. The wire connection nut must be clean and tight.

• Install throttle lever and linkage

• Check for full throttle travel

-----Priming and Starting

• Remove the plug from the top of the housing.

• Fill the housing with clean diesel fuel.

• Install the plug into the top of the housing. Torque Value:  27  n.m  [239 in-lb]

• If the priming plug is hard to remove or the fuel pump is a VS type, remove the fuel supply hose to the gear pump.

• Fill the hose and gear pump with clean fuel.

• Install the fuel supply hose to the filter head.