Chevrolet 70 1969 Series, Shop Manual

Page: 859 / 913

TRANSMISSION AND CLUTCH 7-113
gasket and install on rear bearing cap. Align the oil
passage ports.
18. Apply gasket cem ent to other side of gasket and as­
semble bearing cap and gasket to rear of case with
cap screws and lock washers. T orque to 40 lbs. ft.
19. If slinger (17) has been rem oved from com panion
flange (18) replace at this time.
20. Assem ble and yoke or com panion flange (18) to rear
of m ainshaft with tool sim ilar to J-7801-01. If proper
tools are not available always block front of m ain ­
shaft with 3 /4 ” stock across drive gear bearing bore
opening. Use tubing to assemble flange or yoke to
mainshaft.
21. Assem ble flat washer and lock nut to mainshaft.
H and-tighten nut only at this time.
22. Assem ble 3rd-4th speed clutch collar (19) on front of
m ainshaft, with external clutch teeth tow ard front of
case. Shift clutch collar into mesh with 4th speed gear
(4).
DRIVE GEAR (Figure 5)
1. Position drive gear bearing cap (1) in press rear bear­
ing (2) in bearing cap. Secure with snap ring (3).
2. Position drive gear (4) on bed of press with spline or
front end up. Position drive gear bearing cap sub-
assembly down over splines of drive gear. Assemble
bearing spacer (5) to front of drive gear. Use tubing
and press against spacer until bearing is seated
against gear.
3. Assem ble sm aller bearing (6) over front of drive gear.
Use tubing and press on inner race of bearing until
seated against spacer.
4. C oat O.D. of oil seal (7) with Perm atex or equiva­
lent and assem ble to front of bearing cap.
C A U T IO N : U se care to prevent distortion of
seal.
NOTE: If slinger (8) has been removed from
companion flange, replace at this time.
5. Prelube lip of front seal and press end yoke or co m ­
panion flange (9) on drive gear.
6. R otate bearing cap assembly, under load of press, to
see if all parts are seated properly. Bearing cap
should rotate freely. Assem ble front lock nut hand
tight.
7. Apply gasket cem ent to drive gear bearing cap gasket
(10) and install on bearing cap.
8. Apply gasket cem ent to other side of gasket and as­
semble drive gear and bearing cap to front of case.
Use soft ham m er and tap into position.
9. Secure front bearing cap assem bly to case with cap
screws and lock washers. T orque to 40 lbs. ft.
10. Refer to Figure 2 and engage 3rd-4th speed shift col­
lar (1) with drive gear (8) and lst-2nd speed clutch
collar (3) with 1st speed gear (4) to lock transm ission
in two gears.
11. Use 2 -1 /8 ” socket and tighten drive gear and m ain ­
shaft flange nuts. T orque to 425 lbs. ft. and secure
with cotter pin if castellated nuts are used.
12. Shift clutch collars back into neutral and m ake sure
all shafts turn free.
13. Use pressure type oil can to force lubricant dow n the
oil holes and end slots of all floating gears on m ain­
shaft to flush out grease and insure initial lubrication
of the over-running gear and bearings.
14. Install shift rods, shift forks and cover as outlined
under shift controls assembly.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L