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7M-20
CLUTCHES AND MANUAL TRANSMISSIONS
FOUR SPEED SAGINAW TRANSMISSION
INDEX
Disassembly of transmission....................................... 7M-20
Disassembly of Mainshaft............................................ 7M-20
Cleaning and Inspection............................................... 7M-20
Transmission Case........................................................ 7M-20
Bearings............................................................................ 7M-20
Bearing Rollers............................................................... 7M-20
Gears................................................................................. 7M-20
DISASSEMBLY OF TR ANSM ISSIO N (Fig. IX )
1. Remove side cover attaching bolts and side cover
assembly.
2. Remove drive gear bearing retainer.
3. Remove drive gear bearing to gear stem snap ring,
then remove drive gear bearing by pulling outward
on gear until a screwdriver or other suitable tool
can be inserted between bearing, large snap ring
and case to complete removal (Fig. 2X). The drive
gear bearing is a slip fit on the gear and into the
case bore. This provides clearance between case
bore and shaft for removal of drive gear and
mainshaft assembly.
4. Remove extension to case attaching bolts.
5. Remove clutch gear, mainshaft and extension
assembly together through the rear case opening
(fig. 3X).
6. Using snap ring pliers, expand the snap ring in the
extension which retains the mainshaft rear bearing
(fig. 4X) and remove the extension.
7. Using J-22246 at the front of the countershaft,
drive the shaft and its woodruff key out the rear of
the case. Tool J-22246 will now hold the roller
bearings in position within the countergear bore.
Remove the gear and bearings (fig. 5X).
8. Remove reverse idler gear stop ring. Use a long
drift or punch through the front bearing case bore
and drive the reverse idler shaft and woodruff key
through the rear of the case (fig. 6X).
DISASSEMBLY OF M AINSH AFT
1. Using snap ring pliers, remove the 3rd and 4th
speed sliding clutch hub snap ring from mainshaft
and remove clutch assembly, third gear blocker ring
and third speed gear from front of mainshaft (figs.
IX).
2. Depress speedometer retaining clip and slide gear
from mainshaft.
3. Remove rear bearing snap ring from mainshaft
groove (fig. 8X).
Reverse Idler Gear Bushing..................................... 7M-23
Countergear Anti-Lash Plate.................................... 7M-23
Repairs................................................................................. 7M-23
Clutch Keys and Springs Replacement................. 7M-23
Extension Oil Seal or Bushing................................. 7M-25
Clutch Bearing Retainer Oil Seal.......................... 7M-25
Assembly of Mainshaft................................................. 7M-25
Assembly of Transmission............................................ 7M-27
4. Support first gear with press plates and press on
rear of mainshaft to remove first gear, thrust
washer, spring washer, and rear bearing from rear
of mainshaft (fig. 9X).
5. Remove the 1st and second sliding clutch hub snap
ring from the mainshaft (Fig. 10X) and remove the
clutch assembly, 2nd speed blocker ring and second
speed gear from the rear of the mainshaft. This
completes the disassembly of the mainshaft.
CLEANING AND INSPEC TIO N
Transmission Case
1. Wash the transmission thoroughly inside and
outside with cleaning solvent, then inspect the case
for cracks.
2. Check the front and rear faces for burrs, and if
present, dress them off with a fine mill file.
Front and Rear Bearings
1. Wash the front and rear ball bearings thoroughly in
a cleaning solvent.
2. Blow out bearings with compressed air.
CAUTION:
Do not allow the bearings to spin,
turn them slowly by hand. Spinning bearings
will damage the race and balls.
3. Make sure bearings are clean, then lubricate with
light engine oil and check them for roughness by
slowly turning the race by hand.
Bearing Rollers
All clutch gear and countergear bearing rollers should be
inspected closely and replaced if they show wear. Inspect
counter shaft and reverse idler shaft at the same time,
replace if necessary. Replace all worn washers.
Gears
1. Inspect all gears for excessive wear, chips or cracks
and replace any that are worn or damaged.
2. Check both clutch sleeves to see that they slide
freely on their hubs.
OVERHAUL MANUAL
Содержание 10 series 1973
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Страница 34: ...REAR AXLE DIFFERENTIAL CARRIER 4 3 OVERHAUL MANUAL...
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Страница 144: ...ENGINE 6 3 OIL PRESSURE SENDING UNIT Fig 1 In Line Engine Lubrication OVERHAUL MANUAL...
Страница 145: ...6 4 ENGINE FUEL PUMP PUSH ROD OILING OIL FILTER AND BY PASS VALVE Fig 2 Sm all V8 Engine Lubrication OVERHAUL MANUAL...
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Страница 185: ...6M 6 CARBURETORS Fig M6 Monojet See Fig M7 for legend...
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Страница 247: ...7 M 28 CLUTCHES AND MANUAL TRANSMISSIONS Fig 19X Loading Countergear Bearings Fig 20X Loading Mainshaft Pilot Bearings...
Страница 289: ...7M 70 CLUTCHES AND MANUAL TRANSMISSIONS Fig 13F Transfer Case Exploded View OVERHAUL MANUAL...
Страница 352: ...AUTOMATIC TRANSMISSION 7A 49 Fig 85M Planetary Gear Train Exploded View OVERHAUL MANUAL...
Страница 363: ...7A 60 AUTOMATIC TRANSMISSION Fig IT S ide Cross Section Typical OVERHAUL MANUAL...
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