Chevrolet 1980 Light Duty Truck Repair Manual page 366

7B-20 M A N U A L TR A N S M IS S IO N
F i g . 7 B - 6 J - R e m o v i n g R e v e r s e I d l e r G e a r S h a f t
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.
Reverse Idler Gear Bushings
The bushing used in the idler gear is pressed into the
gear and finish bored in place. This insures the positive
alignm ent o f the bushing and shaft as w ell as proper
m eshing o f the gears. Because o f the high degree o f accuracy
to which these parts are m achined, the bushing is not
serviced separately.
R EP A IR S
Clutch Keys and Springs
The clutch hubs and sliding sleeves are a selected
assembly and should be kept together as originally
assembled, but the keys and tw o springs may be replaced
if worn or broken.
Fig. 7B-7J~Removing 3rd and 4th Synchronizer Snap Ring
F i g . 7 B - 8 J ~ R e a r B e a r i n g t o M a i n s h a f t S n a p R i n g
1. Mark hub and sleeve so they can be m atched upon
reassembly.
2. Push the hub from the sliding sleeve, the keys and
the springs may be easily removed.
3. Place the three keys and tw o springs in position (one
on each side o f hub), so all three keys are engaged by both
springs (Fig. 7B-11J). The tanged end o f each synchronizer
spring should be installed into different key cavities on
either side. Slide the sleeve onto the hub aligning the marks
made before disassembly.
A groove around the outside o f the synchronizer hub
identifies the end that m ust be opposite the fork slot in the
sleeve w hen assembled, for the 3-4 synchronizer. H ow ever,
Fig. 7B-9J~Removing Rear Bearing and 1st Speed Gear