TM 9-2910-226-34 A ¼x1¼ fillister head screw. B ¼-inch lockwasher C Timing window cover D Timing window cover gasket E Assembled washer screw F Control unit retainer G Retaining pin H Fuel control unit assembly J Plunger sleeve pin K Preformed packing L 9/16-inch plain nut M 9/16-inch lockwasher N Overflow valve assembly P Preformed packing Q Oil filter R Filter screw copper gasket S Oil filter screw T Pin U Preformed packing V Gasket W Screw X Operating lever stop screw Y Operating lever stop Z Retaining ring AA Upper dust cover BB Operating lever assembly 1 Lever clamping screw 2 Operating lever 3 ¼-inch lockwasher 4 ¼-inch nut CC Governor lead seal DD No. 12x3/8 machine screw EE No. 12 lockwasher FF Fuel supply pump assembly GG ¼x1¾ machine screw HH ¼-inch lockwasher JJ Fuel shut-off rod assembly KK Shutoff rod gasket LL Fuel supply pump gasket MM Pipe to tube tee NN Pipe nipple PP Oil hose assembly QQ 90° elbow RR Woodruff key Figure 3-37. Code F and G injection pump assemblies, partial exploded view. 3-18. Cleaning and Inspection. a. Cleaning. Immerse passages thoroughly. Refer to TM 9-214 for care and and clean all parts in dry-cleaning solvent, maintenance of antifriction bearings. specifications PS-661, and dry with compressed air. b. Inspection and Repair. Examine all threaded Cover parts with a clean lint-free cloth and keep all parts for worn or damaged threads. Minor thread parts clean until assembly. Clean all fuel and oil 3-29