Retrofit of LCS Control/Pump Cover Assembly to Stanadyne ‘D’ Series Pumps

Installation

Removing Existing Governor Control Cover

Remove the fuel return line from the pump return line connector assembly. Use two wrenches to loosen.

Disconnect the electric shutoff (ESO) solenoid wire from the governor control cover.

Loosen the three cover screws and remove the existing pump cover. At a later step the emergency shutoff (ESO) solenoid, its hardware, and the housing pressure regulator fitting, will be removed from the original pump cover and re-used during the Installation of the LCS Control/Cover assembly steps (step 16).

Preparing Stanadyne Fuel Pump

Remove and discard the throttle shaft linkage snap clip (or shut-off cam, if external lever). Use Stanadyne tool #20992 or needle nose pliers.

Remove the shutoff shaft assembly. Remove the O-ring seal and spacer washer from the shaft and discard.

Remove the throttle lever and shaft assembly and the throttle lever fork and spacer.

If the pump is equipped with a damper assembly, slide the damper barrel off the damper piston.

While holding the control rod guide with a 5/8 inch (16 mm) wrench, use a 9/16 inch (15 mm) wrench to loosen and remove the droop control locking cap.

Twist and pull to remove the slotted adjusting cap assembly.

Use diagonal cutting pliers to remove the control spring pin from the control rod.

Loosen and remove the control rod guide.

Disengage the governor spring from the governor arm. Depress the metering valve and remove the control rod and spring assembly.

Install the new spring (p/n 02-0004-142) over the tabs on governor arm, ensuring that the cross loop on the end of the spring is between the tabs. Install the spring retainer (p/n 02-0004-143), install the guide stud nut (p/n   02-0004-146) with the chamfer side positioned toward the housing so that it acts as a seat for the black O-ring (p/n 02-0004-145). Install the guide stud (p/n 02-0004-144). Turn the guide stud into the housing two or three turns beyond the point where all the slop is taken out of the assembly (this sets the target speed of the mechanical governor).

Slide the plastic spacers (p/n 02-0004-137) on the bore plugs (p/n   02-0004-135). Lubricate the red O-rings (p/n 02-0004-136) with silicon or petroleum-based lubricant before installing them on the bore plugs. Insert the bore plugs into the housing and secure with the clips (p/n 02-0004-138). (If using pliers or another tool to press the clip into place, be sure the top surface of the pump housing is not damaged where the O-ring will seal.) Manually spin the bore plugs to be sure the clips do not interfere with the linkage hook.

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