Component Fuel Pumps: Disassembly

File a locating mark on pump cover, fuel and vacuum pump sections and pump body, for reassembly in same relative positions. Remove diaphragm screws while holding fuel and vacuum pump bodies firmly against pump body.

NOTE: Vacuum pump has a strong spring within cover and spring tension can be relieved by installing two longer screws in diametrically opposite diaphragm flange screw holes and turning these screws out evenly until pressure relieved.

On AC pumps, unhook fuel pump pull rod from rocker arm link by pressing down on diaphragm and tilting lower end of pull rod away from rocker arm, unhook vacuum pump pull rod by turning diaphragm assembly 90° while tilting lower end away from rocker arm link. On Carter pumps, it will be necessary to remove rocker arm pin and withdraw rocker arm from pump body to free the diaphragm pull rod (Piston type vacuum pump piston assembly can be withdrawn from cylinder by grasping piston nut and rotating piston while it is being pulled out). To remove valves and oil seals for replacement, remove staking and pry old valves and seal out

CAUTION: (On Carter pumps, valves are not replaceable and should not be removed).