1
Nut
13
Thrust washer
2
Gear
14
Retaining ring
3
Nut (3 rqr)
15
Seal
4
Lockwasher, (3 rqr)
16
Seal (2 rqr)
5
Stud (3 rqr)
17
Gasket
6
Gasket
18
Cover
7
Adapter
19
Screw (3 rqr)
8
Washer (3 rqr)
20
Nut
9
Washer (6 rqr
21
Nut (3 rqr)
10
Stud (3 rqr)
22
Flatwasher (7 rqr)
11
Key
23
Housing
12
Shaft
24
Ground strap
Figure 3-20. Pump drive mechanism, exploded view.
pump housing (14, fig. 3-19), then turn crankshaft
(6) Remove adjusting screws (35 and 56) and
clockwise until governor weight timing mark (8) is alined
nuts (36 and 57) as required.
with cam timing mark (7).
(7) Compress spring (45), retainer (44), idler
(5) Remove three nuts (25, fig. 3-18) and
spring (43), and guide (42), then remove from guide stud
washers (24) then lift fuel injection pump (10) off drive
(81).
mechanism (21).
(8) Remove guide stud (81) and washer (82)
(6) Remove three nuts (4) and lockwashers
from housing (51).
(2) then lift drive mechanism (21) and gasket (6, fig. 3-
(9) Raise link (46) at metering valve (50), pull
it back slightly then disengage link (46) from arm (47).
(7) Install fuel injection pump and drive
(10) Place link (46) aside, then remove
mechanism by reversing the procedures in steps (1)
metering valve (5, fig. 3-19) from housing (14). Use care
through (6) above.
not to crack valve while lifting it from housing.
(11) Remove nut (54), packing (53), and shaft
b. Disassembly and Reassembly.
(52) from housing (51).
(12) Lift arm (47) and link (46) out of housing
(51).
(1) Remove three screws (19, fig. 3-20),
(13) Remove bolt (38), fuel line connector
cover (18) and gasket (17) from pump housing (23).
screw (73), packing (74), cam hole seal (62), screw (63),
(2) Rotate shutoff shaft (1, fig. 3-19) to full
packing (64) and washer (75) from housing (51).
shutoff position.
(14) Lift head and rotor (13, sheet 1 of fig. 3-
(3) Pry shutoff cam (2) away from housing
(14) and slide cam (10) out of its groove and off throttle
(15) Insert a finger in bore of sleeve housing
shaft and lever (37, sheet 2 of fig. 3-21).
(20) and lift upward until it disengages with weights (21).
(4) Remove shutoff shaft (55) and packing
(68).
(5) Remove throttle shaft (87) from housing
(51), remove three screws (33), lockwashers (84), and
separate throttle arm (81) from throttle shaft (87).
AGO 20051A
3-29
