Do not tighten governor plug tool 3376457 to the plug (85). Tightening governor plug tool
3376457 to the plug may make it impossible to remove the tool once the plug has been inserted
into the cavity.
Lubricate the preformed padding (86) with dean engine lubricating oil, such as MIL-L-9000 or equivalent,
and install on the plug (85). Install the plug and preformed packing in the cavity in the fuel pump housing
(66) using governor plug tool 3376457. Press the plug into the cavity until it is securely seated and
withdraw governor plug tool 3376457.
Mainshaft, Cover, and Governor. The mainshaft, cover, and governor contains the tachometer drive, main drive
shaft assembly, and governor weight carrier assemblies.
Disassemble. See Figure 6-12.
Make a preliminary check for wear of the bushing (10). I side play is evident, replace the bushing in
accordance with step (2) (t), below.
To avoid a false backlash reading in the following check, be sure the fuel pump end of the
cover (11) faces up. Turn the drive shaft (31) gently to avoid angular movement of the
unsupported shaft end.
See Figure 6-13 and check the backlash between the gears (9 and 28, Figure 6-12). I the gear backlash is
not within 0.005 to 0.009 inch (0.13 to 0.23 mm), replace the gears in accordance with step (2), below.
Remove the lower weight and carrier assembly (4) using puller ST-709, and remove the shoulder pin (1),
shims (2), and weight assist spring (3). Remove the bushing (10) from the cover (11) in accordance with
step (2) (t), below.
Remove the capscrew (20), lockwasher (21), and washer (22). Remove the fuel pump drive coupling (23)
using puller ST-709, remove the tachometer drive gear (24), and remove the drive key (32).
Remove the male connector (12). Using puller ST-1 326, remove the tachometer assembly (18). Discard
the tachometer seal (14).
Working from the gear end of the tachometer drive assembly (18), press out the tachometer drive shaft
(13), and remove the tachometer driven gear (17) and sleeve bearing (16).
Using needle nose pliers, remove the retaining ring (29) from the groove in the cover (11).
Temporarily install the capscrew (20) in the drive shaft (31), and press out the drive shaft assembly (26).
Remove and discard the retaining ring (29). Disassemble the drive shaft assembly in accordance with step
Remove and discard the of oil seals (25).
Refer to step (b), above, and check the backlash of the idler gear (34) and governor gear (44). Replace
the gears if backlash is not between 0.005 to 0.009 inches (0.13 to 0.23 mm).
Heat the cover (11) in the vicinity of the bushing (35) with a propane torch. Thread a capscrew of the
appropriate size into the recess. Place a washer behind the head of the capscrew large enough to hold the
gear on the idler shaft. Remove the idler shaft assembly using puller ST-709.
Remove the retaining ring (38), washer (37), and bushing (35), from the idler shaft (36).
Remove the upper weight carrier assembly (39) and bushing (45) using puller ST-709, as in step (c),