7.
Using hollow end of bearing driver, press retain-
ing ring on shaft, far enough
so
ring snaps into
groove on shaft.
8. Slide bearing spacer sleeve (shortest sleeve) over
hollow end of bearing driver; then use tool to
press top bearing into adapter. Make sure tool
bottoms against top of adapter boss and that "let-
tered" side of the bearing faces upward.
9. Replace bearing spacer sleeve with seal spacer
sleeve (longest sleeve) and then use tool to press
oil seal over shaft at top of adapter. Make sure
seal is installed with "lettered" side down, facing
the bearing, and that tool bottoms against top of
adapter boss.
10.
Reinstall adapter and injection pump assemblies.
GASKET
I
ADAPTER
\
*--
BLOCK
WALL
FIGURE
63.
MEASURING
DEPTH FOR SHIM THICKNESS
Installation
Proceed as follows:
1.
Place new gasket
on
engine block dowel pins and
install adapter using four socket head screws and
lock washers; torque screws to 20 to 24 ft.-lb. (27
to 33 Nm).
2.
Determine shim thickness required between
pump and adapter, because the new gasket may
not be the same thickness as the original one. See
Figure 63.
3.
B.
Using
a
depth micrometer, measure the dis-
'tance from the mounting face of the adapter
to the base circle of either cam lobe.
The shim kit contains shims in the following thicknesses:
0.002,0.003,0.006,0.010,0.014,
and
0.018
inches.
If
one
shim isnotenough, the required shim thickness(between
0.004
and
0.020)
can be obtained within
0.001
inch by
combining
two
of
the above shims. The thickness in
inches is stamped on each shim. For the greatest accu-
racy, measure the total shim thickness with a micrometer.
4. To calculate the shim thickness, determine the
following:
Standard installation depth
Distance from adapter flange to cam
of pump is
.
.
.
. .
.
. .
.3.2598* inches (82.8 mrn)
lobe base circle as measured
(subtract from above)
-
inches
(
Required shim
mrn)
thickness=
-
* Manyearlierspec
AB
MDJEengines have an instal-
lation dimension
of
3.2540 inch (82.652 mm). On
these units, a silkscreen print indicates this dimen-
sion. If
so,
3.2540 should be substituted for 3.2598 in
Step 4.
INJECTION
PUMP
INSTALLATION
Install injection pump on adapterassemblyasfollows:
1. Rotate crankshaft to position camshaft
so
that the
pump rollers contact the camshaft base circle
(low point of the pump cam lobes). One lobe
should be up, the other lobe down. See Figure63.
2. Using proper shim thickness (Figure 64), install
pump to adapter with four socket head capscrews
and lockwashers. Torque to 20 to 24 ft.-lb. (27 to
33 Nm).
Be sure the controi rack bail fits
between the yoke fingers for
proper operation. If the
rack
ball is not properly
placed in the yoke, engine operation
will
be
uncontrollable and must be stopped immediately.
In
such as emergency, the engine can be stopped
by blocking the air intake,
or
by loosening
(just
cracking) the fueiinjector line fittings at the pump
The proper shim thickness is
stamped
on the block for the
lation
of
the injection pump.
end.
shim combination required during the original factory instal-
3. Connect flexible fuel inlet line to pump inlet.
To
measure for shim thickness:
4.
Connect each high pressure fuel line to proper
pump outlet and nozzle inlet.Torque nuts to
16
to
A.
Rotate crankshaft to position injection pump
cam lobes on
the camshaft in a vertical posi-.
tion
so
the base circle of each lobe faces the
adapter opening.
18 ft.-lb. (22 to 24 Nm).
5.
Reinstall fuel control arm on yoke and shaft
assembly, Figure 64. Tighten socket head screw,
but
do
not over tighten.
54
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