Section 5 - Fuel System - Group 05 Fuel Pump - Rebuild (5-02) M11 Page 5-11 Remove the two damper mounting capscrews. Install the damper assembly with a new o-ring on the gear pump. Tighten the capscrews. Torque Value: 18 [13 ft-lb] NOTE: If a fuel filter and damper assembly are mounted on the gear pump, remove the four mounting capscrews. Install the fuel inlet connection. Be careful not to let dirt enter the pump. Check for free rotation of the gear pump. Fuel Damper - Disassembly and Inspection Remove the housing from the cover. Remove the spring steel diaphragm. Discard the o-rings. Inspect the nylon washer, discard if damaged.
Check for corrosion, wear, or cracks in the cover or the diaphragm. Replace the damaged parts. To check the diaphragm for hidden cracks, drop it on a flat, hard surface. It must have a clear ring. If it has a flat sound, replace the diaphragm. Fuel Damper - Assembly Install new o-rings in the grooves and a new nylon washer. Clean the diaphragm. Coat the diaphragm with clean engine oil. Install the diaphragm in the cover. Assemble the cover to the housing. Tighten the capscrews. Torque Value: 18 [13 ft-lb] Fuel Shutoff Valve - Disassembly Remove the coil housing and the fuel shield. Discard the o-ring.
Remove the spring washer, valve disc, actuator disc, and actuator spacer from the valve housing. Discard the o-ring.