TM 10-3930-659-34 4-24.  FUEL INJECTION PUMP REPLACEMENT (Con’t). 3. Remove  two  screws  (22),  washers  (21),  spring  retaining  bracket  (20),  access  cover  (19),  and  gasket  (18)  from engine front cover (17).  Discard gasket. 4. Remove thrust pin (26) and spring (25) from drive shaft (27). NOTE Use  care  when  removing  nut  or  washer  from  drive  shaft.    Should  nut  or  washer  fall  into  engine front cover, it will be necessary to remove engine front cover to retrieve nut or washer. 5. Remove nut (24) and washer (23) from drive shaft (27). 4-97