TM  10-3930-638-24&P 4-3.   FUEL   SYSTEM   MAINTENANCE   (cont) b. Fuel Injection Pump (cont). STEP LOCATION ITEM ACTION REMARKS DISASSEMBLY  (cont) 7 g. Two seals (69) (cont) h. Slide washer (70) i. Piston (71) j. Advance adjusting spring  (72) k. Shim (73) l. Power side piston  hole plug (74) m. Two seals (75) and slide washer (76) n. Power piston (77) o. Seal (78) p. Piston ring (79) q. Cam advance screw (80) Remove Remove Remove Remove Remove Remove Remove Remove Remove Remove Remove Invert spring side piston hole plug and let piston (71), spring (72), and shim (73) fall into your hand Hold plug (74) in one hand and rap sharply into palm of your other hand. Piston (77) will slide cut Assemble tools P/N 15499 and P/N 15500 into advance screw plug hole to remove (see below). Use 5/8 inch socket on P/N 15499 tool 4-99