( 2 ) P l a c e the throttle control in the idle
(3) Remove the timing hole cover (21, B,
position and check the engine speed on
the tachometer. The correct idle speed
(4) M o u n t t h e f u e l i n j e c t i o n p u m p a n d
is 600 rpm.
governor assembly on the drive shaft
assembly alining the pin in the drive
( 3 ) L o o s e n the locknut and turn the idle
shaft with the locating hole in the
s t o p screw (fig. 19) clockwise to in-
distributor r o t o r , a n d i n s t a l l t h e
c r e a s e speed or counterclockwise to
m o u n t i n g hardware fingertight as in-
d e c r e a s e speed. Tighten the locknut
structed on figure 19.
when correct engine speed is attained.
R o t a t e the pump assembly, first clock-
w i s e and then counterclockwise until
e. High Speed Adjustment.
the fuel injection pump timing marks
(1) S t a r t t h e e n g i n e a n d o p e r a t e a t n o
are alined, and tighten mounting
l o a d until normal operating tempera-
hardware.
ture is attained (TM 5-3820-205-
N o t e . Turn the crankshaft 2 revolutions
10/l).
and check timing marks. Adjust if necessary.
( 6 ) Install the flywheel and pump timing
( 2 ) Place the throttle control in the high-
hole covers.
s p e e d position and check the engine
speed on the tachometer. The correct
( 7 ) Install the fuel injection lines, throttle
control cable and electrical leads (TM
e n g i n e speed is 1,400 rpm (full load
5-3820-205-20/l).
speed).
( 3 ) Loosen the locknut and turn the high-
d . Idle Speed Adjustment.
s p e e d stop screw (fig. 19) clockwise
(1) Start the engine and operate at no
to decrease or counterclockwise to in-
l o a d until normal operating tempera-
crease speed. Tighten the locknut
ture is attained (TM 5-3820-205
when correct engine speed is attained.
10/l).
Se c t ion I X . I N J ECT I ON
Se
PU M P DRI V E SH A F T
AN D DRI V E GEAR ASSEM B L I E S
jection pump drive shaft and drive
6 9 . General
gear assemblies from the engine.
The injection pump drive gear assembly is
mounted on the back of the front plate at the
b. Disassembly.
r e a r of the timing gear cover. The drive gear
( 1 ) Refer to figure 21, and disassemble
assembly is geared to the camshaft timing gear.
the injection pump drive shaft assem-
Inside the drive gear assembly a pinion drives
bly.
an internal-tooth gear that is connected to the
Note. Remove the shaft (7) with the bear-
drive shaft assembly that drives the fuel injec-
i n g (8) assembled, and remove the bearing
tion pump and governor assembly.
f r o m the, shaft.
(2) Refer to figure 22, and disassemble
70. Injection Pump Drive Shaft and Drive
the injection pump drive gear assem-
Gear Assemblies Removal
bly.
and Disassembly
Note. Remove the shaft assembly
(6),
a. Removal.
bearing (7) spacer (8), bearing (9),
and
(1) Remove the fuel injection pump and
washer (10) as an assembly. Remove
the
g o v e r n o r assembly (par. 66).
bearing (7), spacer (8), bearing (9),
and
washer (10) from the shaft.
AGO 8498A
58