1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club

9 - 20 OVERDRIVE
REASSEMBLY - COMPLETE UNIT
(Double Lever Type)
1. Thoroughly clean both the transmission and overdrive
cases.
2. Install the transmission mainshaft bearing and oil slinger
(lip to inside) on mainshaft and in the overdrive adaptor.
Retain the assembly in position with the large snap ring.
3. Install new shift shaft oil seals. The oil seals can be driven
out from the inside of transmission c a se with a punch
and tapping the new seals in place from the outside of
case.
NOTE: When Installing oil seals, coat outside of seal and
inside of housing with red or white lead or gasket sealer
to insure leak-tight joints.
4. Install the low and reverse shift shaft in the transmission
case. DO NOT damage the oil seal.
5. Insert interlock sleeve in the transmission case and Install
the interlock spring, interlock pin and one interlock ball.
Align the neutral detent of the low and reverse shift shaft
cam with the interlock ball and while holding the low
and reverse shift shaft in position, Install the tapered pin
in the case.
6. Install the second and high shift shaft in the transmission
case, pushing the shaft in as far as possible. Install the
other interlock ball by inserting it over the interlock
spring, compressing the spring and at the same time s lid
in g the second. and high shift shaft toward the center of
the case to its correct position.
7. Install shift shift levers, short (low and reverse) on rear
shaft and long (second and high) on front shaft. Move
either lever into any in-gear position and with one end of
the interlock sleeve contacting a shift shaft cam, measure
the clearance with a feeler gauge between the opposite
end of the sleeve and the c am of the other shift shaft,
Figure 28. This clearance should be from .001" to .007".
If not within these limits, remove sleeve and replace with
one of proper length. Interlock sleeves are available in
five different lengths as shown in specifications. Install
taper pin retaining second and high shift shaft in case.
FIGURE 28
8. To Install countershaft gear cluster assembly, place needle
roller spacer tube over dummy shaft and insert in cluster.
Apply viscous grease between shaft and inside of gear at
each end and place needle roller washers in position
against each end of spacer tube. Next, insert needle rollers
(22) between inside of gear and dummy shaft, followed by
a retaining washer at each end.
9. Coat countershaft thrust washers and ends of cluster with
viscous grease and place washers in position. Install front
washer with bronze face to gear and lug at top. The rear
inner (bronze) thrust washer should be Installed so the
lugs will engage the slots in the cluster gear and the outer
(steel) thrust washer with the lug at top.
10. Carefully lower cluster and assembled parts into position
and enter front end of countershaft at rear of transmission
case, tapping it forward while holding the front end of the
dummy shaft in constant contact with the countershaft to
keep needle rollers and washers in place. Drive countershaft
forward just far enough to enter front end in case, as
it must again be removed after checking end play.
11. With a feeler gauge inserted between the rear thrust
washers, check countershaft cluster end play, Figure 29.
End play should range between .006" and .016"; if more
than this, the thrust washers should be replaced.