outlined for the direct gear driven type
I n s t a l l Accessory Drive
accessory drive.
1. Remove the old gasket material from
Use care so that
the flywheel housing.
7. Remove the snap ring and ball bearing
from the accessory drive shaft retainer
no gasket material falls into the gear
as s h o w n i n F i g u r e 1 1 B - 1 8 0 o n p a g e
train compartment.
11B-118.
2. Insert a clean, lintless cloth in the
flywheel housing opening to prevent
bolts from accidentally falling in the gear
Inspection
train.
Align the bolt holes in the acces-
Clean the accessory drive parts with cle-
sory drive plate with the tapped holes in
an fuel oil (except shielded bearings)
the balance gear. Then secure the plate
Ex-
and dry them with compressed air.
with four bolts and lock washers.
amine the gear teeth of the drive shaft,
drive coupling or drive plate for wear.
NOTE
If worn excessively, replace with new
Effective
units
parts.
with
3A-045,
4A-007, 6A-021, 8A-003, 12A-007
Inspect the ball bearing used to support
and 24A-001, the tapped holes in
the accessory
drive shaft.
Shielded
the balance gears were changed
bearing must not be washed; dirt may be
from 5/16"-24 to 3/8"-24 threads
washed in and the cleaning fluid could
with a corresponding change in the
size of the accessory drive attach-
not
be
entirely
removed from
the
ing bolts.
Also, the accessory
bearing. Wipe the outside of the bearing
clean, then hold the inner race and re-
drive plate used with 5/16"-24
volve the outer race slowly by hand. If
bolts incorporated four spacers as
the bearing is worn or does not roll free-
shown in Figure 11B-182 on page
ly, replace it.
11B-120 the current disc type spa-
cer is separate from the accessory
Inspect the accessory drive hub for
drive plate.
The four spacers
from the old drive plate may be
grooving at the area of contact with the
lip of the oil seal. If the hub is grooved
removed and replaced by the disc
type spacer for use with the cur-
to a point where the effectiveness of the
rent
oil seal is lost, a ring type oil seal spa-
balance
with
the
cer
is
available
which
3/8"-24 tapped holes.
serves to
re-position the seal and provide a new
sealing surface (see Figure 11B-181).
3. If an accessory drive plate is used,
to Figure
11B-179
on
refer
page
11B-117,
page
11B-118 and Figure 11B-182 on page
Then align the bolt holes in
11B-120.
the accessory drive plate with the tapped
holes in the camshaft gear. Secure the
drive plate with the four special shoulder
Tighten the
bolts and lock washers.
bolts to 45-50 lb-ft (61-68 Nm) torque.
4. If a gear driven accessory is used,
install the drive coupling and proceed as
follows:
A. Affix a new gasket to the mounting
flange on the accessory.
position
accessory
in
the
B. Place
against the flywheel housing; rotate
it, if necessary, to align the teeth of
the driven hub with those in the
d r i v e c o u p l i n g . Then secure the ac-
Figure 11B-181. Location of Oil Seal
Spacer
Engine (Less Major Assemblies)
