36 TRANSMISSION—OVERDRIVE
This snap ring is serviced in six different sizes .087",
.090", .093", .096", .099", and .102". Select the thickest
ring which will fit into the retaining groove. Proper selec-
tion of the snap ring will reduce end play to a minimum.
Install a new oil seal in the torque tube adapter ( Fig. 4).
Attach the adapter to the overdrive case with the four cap
screws.
Reinstalling Clutch Shaft Bearing
Place the oil slinger on the clutch shaft with the concave
side toward the rear. Install the large bearing lock ring on
the bearing and place the bearing on the clutch shaft.
With the use of Tool J-2995 and thrust yoke J-6652,
install the bearing on the clutch shaft and into the transmis-
sion case (Fig. 34).
1. J-2995 2. J-6652
FIGURE 34—Installing Clutch Shaft Bearing
When the bearing is properly seated, place the spacer
washer against the hearing race. Install the clutch shaft
bearing snap ring. This snap ring is furnished in six differ-
ent sizes .087", .090", .093", .096", .099", and .102".
Select the thickest ring which fits into the retaining
groove. Proper selection of the snap ring will reduce end
play to a minimum.
Checking Clutch Shaft End Play
Install the clutch shaft bearing cap without a gasket. Check
the clearance between the bearing cap and case with a
feeler gauge (Fig. 35I.
The desired clutch shaft end play is .000". Therefore,
the clearance between the bearing cap and case must be
compensated by the thickness of the gasket or gaskets to
be installed. This gasket is serviced in two sizes .010" and
.015". Install the bearing cap and attach with four cap
screws.
FIGURE 35—Measuring Clutch Shaft End Play
Transmission Cover and Shift Fork
Assembly
Remove thrust yoke J-6652 from the synchro-clutch.
Place the synchro-clutch and first and reverse sliding
gears in neutral. Place the shift shafts and forks in neutral
and install the assembly to transmission case. Secure in
position with the attaching cap screws.
The transmission requires a final check by shifting in all
gears; check the operation carefully.
LUBRICATION OF THE TRANSMISSION
AND OVERDRIVE
Check the lubricant level of the transmission and over-
drive every 1,000 miles. Transmission and overdrive units
should be filled to the drain plug level on the right side of
both units.
Drain and clean twice a year, or every 10,000 miles,
using only flushing oils. Do not use gasoline, kerosene,
steam, etc.
For atmospheric temperatures above 32° Fahrenheit,
use Mineral Oil Gear Lubricant SAE No. 90 in the trans-
mission and overdrive.
Below 32° Fahrenheit, use SAE No. 80.
Where difficulty in shifting is experienced in subzero
temperatures, dilute the transmission and overdrive oil as
required, using light engine oil.
Transmission Capacity
Standard and/or overdrive 4 Pints.
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