TM10-3930-660-20 8-30. STE/ICE  PULSE  TACHOMETER  AND  DRIVE  ASSEMBLY  -  REPLACE  (Cont’d  ) 2. IF NECESSARY , REMOVE TACHOMETER DRIVE (2) AND MOUNTING COMPONENTS (PARTS  6   - 9) FROM ENGINE. a. b. c. d. e. Remove right-hand fan guard, para.  7-8. Remove two screws (10) and two flatwashers (11) securing drive (2),  and  mounting  components (parts 6 -   9) to engine. Remove drive (2), gasket (6), cover (7), and gasket (8) from engine as an assembly. Discard gasket (8). If necessary, remove hub (9) from shaft  (12). If necessary, remove drive (2) from cover  (7).   Discard gasket (6). INSTALLATION 1. IF REMOVED, INSTALL TACHOMETER DRIVE (2)  AND  MOUNTING  COMPONENTS (PARTS  6   - 9) TO ENGINE. a. b. c. d. e. If removed, install drive (2) and new gasket (6) to cover (7). If removed, install hub (9) onto shaft  (12). Position new gasket (8) on cover (7) and install gasket (8), cover (7), gasket (6) and drive (2) to engine as an assembly. Secure mounting components (parts 2. INSTALL PULSE TACHOMETER (1) TO TACHOMETER DRIVE (2). a. Insert pulse tachometer (1) into tachometer  drive  (2). Hand tighten nut on pulse tachometer (1) and then further tighten nut 1/4 to l/2 additional turn. b. Insert male connector (3) of pulse tachometer (1) into female 6 -   9) to engine with two screws (10) connector (4) of vehicle wiring and two flatwashers (11). harness  (5). Install right-hand fan guard, 3. CONNECT NEGATIVE BATTERY CABLE, para.  7-8. PARA.  8-44. 8-77