TM 5-3810-289-34
(4) Remove large snap ring from pump end
of drive shaft between drive cover and drive gear (fig. 3-
(5) Install a longer capscrew in place of
drive coupling retainer capscrew (1, fig. 3-45) press on
cap screw to press drive gear assembly from front cover
(6) Press drive shaft oil seals from drive
cover.
(7) Governor assembly can be disassemble
to change gear, weights and bushing. The governor
carrier and shaft can only be replaced as an assembly.
If shaft is 0.338/0.392 inch O.D. or smaller and requires
replacement, the use of 0.515/0.519 inch O.D. shaft and
carrier assembly and new bushing as replacement parts
is recommended (fig. 3-45).
1
Capscrew, coupling
23
Snap ring
2
half coupling
24
Washer, plain, coupling
3
Cover
25
Capscrew, cover
4
Seal (2)
26
Capscrew, cover (6)
5
Ball bearing
27
Gasket, cover to housing
6
Drive shaft gear
28
Lockwasher, cover
7
Tachometer drive gear
29
Lockwasher, cover (6)
8
Drive shaft
30
Washer, plain, cover
9
Weight carrier shaft bushing
10
Weight carrier (NSS)
31 Washer, plain, cover
11
Weight shaft (NSS)
32 Capscrew, pump to
accessory
12
Brazing wire drive (4)
13
Governor drive shaft gear
14
Weight pivot pin (2)
33
Coupling, fuel pump drive
15
Weight assist plunger
34
Gasket, pump to accessory
drive
16
Retaining ring
35
Lockwasher, pump to
accessory
17 Weight assist shim drive (4)
18 Weight assist spring
36
Nut, pump to accessory
drive
19 Washer thrust (4 rqr)(4)
Figure 3-43. Weight shaft assembly being pulled with
20 Governor weight (2)
37 Washer, plain, pump to
accessory drive (4)
ST-709.
21 Governor drive key
22 Lockwasher coupling
Figure 3-45. Governor carrier weight assembly-exploded
view.
Caution: Governor weights can only be
replaced in pairs to maintain balance.
c. Replacement of Governor Weight Carrier Parts.
(1) If governor gear, shaft, weights or weight
carrier are damaged, press gear from shaft (fig. 3-46).
(a) If removed, press on gear. Do not press
against weights as weight pins may be damaged. Press
against end of the carrier shaft.
(b) The rough beveled edge of gear goes
toward carrier weight and the smooth side goes toward
the bushing.
(2) Slip governor carrier bushing on the
carrier shaft with flanged end of bushing next to gear and
secure bushing with snap ring.
Figure 3-44. Snap ring removal from groove.
d. Disassembly of Drive Shaft.
(1)
Press tachometer drive gear and
governor drive gear from drive shaft (fig. 3-47).
Note. Press away from bearing because shaft has
a shoulder under bearing.
(2) Press drive bearing from shaft only if
bearing is rough or shaft has worn grooves.
3-17
