 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 (3) Check valve clearance on remaining
properly meshed, install the gear and secure
valves in a similar manner. The re-
with self-locking nut. Tighten nut securely.
maining valves can be adjusted by ro-
tating the crankshaft in 120 degree
Caution: To prevent valves from being struck
increments with valve adjustments being
by pistons, do not rotate crankshaft with cam-
made in the following sequence:
shaft gear removed.
No.
1
and
No.
3
intake,
e. Install timing gear cover and check the
No.
5
and
No.
6
intake,
fuel injection pump timing (par. 106 below).
No.
3
and
No.
2
intake,
No.
6
and
No.
4
intake,
No.
2
and
No.
1
intake,
No.
4
and
No.
5
intake.
JECTION PUMP TIMING
(4) After adjustment is correct, use new
a. Procedure.
gaskets and install the cylinder head
covers and the crankcase breather a-
(1) Remove the valve rocker cover on front
dapter by reversing the sequence of
cylinder head following instructions in
instructions for figure 62.
(2) Remove the two injection pump timing
covers to expose the pump timing marks
Note. The camshaft is timed during assem-
following instructions in figure 61, steps
bly of the engine and should require no further
D and E.
attention except during the replacement of
crankshaft and camshaft gears (par. 98) or
(3) Rotate the crankshaft clockwise as
during major overhaul. However, the valve
viewed from front of engine until No. 1
timing can be readily checked in the following
intake valve has completely closed. Con-
manner:
tinue rotating the crankshaft approxi-
mately 1/4 of a revolution until the mark
a. Remove the timing gear cover (par. 97).
on the damper is alined with the pointer
on the timing gear cover (fig. 61).
b. Locate the timing marks on the crank-
Cylinder No. 1 should then be on the
shaft gear and the camshaft gear (fig. 214).
compression stroke, with injection for
No. 1 cylinder just beginning. The in-
Note. The crankshaft gear is marked with
jection pump is properly timed when
a single mark on one gear tooth. The camshaft
the mark on the damper is alined with
drive gear is marked with a single punch mark
the pointer on the timing gear cover,
in two adjacent gear teeth.
the injection pump timing pointer on the
injection pump automatic advance unit
c. Rotate the crankshaft until the marks
hub (fig. 64) is alined with pointer, and
on both gears are together. The timing is
the marked gear tooth is visible through
correct if the marked tooth of the crankshaft
the window cover at the side of the in-
gear is meshed between the two marked cam-
jection pump (fig. 65). If these conditions
shaft gear teeth (fig. 214).
are not observed, the injection pump
must be retimed as follows:
Note. The crankshaft gear turns two re-
volutions while the camshaft gear turns one
Retiming Fuel Injection Pump.
revolution. Rotate crankshaft until timing marks
are alined.
(1) Remove fuel injection pump driven gear
d. If the timing marks do not aline in the
excess cover and timing covers (fig. 61).
above manner, remove the self-locking nut and
remove the camshaft gear from the engine,
(2) Loosen three hex head screws securing
using puller -8708724 (fig. 217). Rotate the
driven gear and retaining plate to drive
camshaft and gear until the marked teeth are
hub (fig. 66).
145
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals