Reverse Clutch Housing and 2ND Sprag Disassemble
REVERSE CLUTCH & SECOND SPRAG 4T80-E TRANSAXLEDISASSEMBLE
1. Remove reverse clutch snap ring, then clutch plates.
2. Compress spring and retainer assembly using clutch compressor tool No. J-39694, or equivalent, then remove snap ring and clutch compressor.
3. Remove snap ring retainer, then the spring and retainer assembly.
4. Remove piston assembly and spiral snap ring, discard snap ring.
5. Remove sprag clutch retainer, 2nd sprag outer race and 2nd sprag clutch.
6. Remove 2nd clutch outer race thrust washer.
INSPECTION
1. Check reverse clutch housing for plugged feed holes.
2. Inspect snap ring for overexpansion
3. Inspect steel clutch plates for scoring or burning. Replace fiber compound plates.
4. Inspect piston assembly seals for tearing or rollover. Remove seals and discard.
5. Inspect piston assembly checkball orifices for damage caused by checkball peening. Checkball should move freely in piston capsule.
6. Inspect reverse clutch housing bushings for wear or damage.
7. Inspect spring and retainer assembly for missing or broken springs.
8. Inspect 2nd sprag for flipped or damaged sprags.
9. Inspect 2nd sprag race for damage.
ASSEMBLE
1. Install new seals onto reverse piston, then install reverse clutch piston into reverse clutch housing. Use reverse clutch inner piston seal protector tool No. J-39054, or equivalent, to protect piston inner seal. Ensure outer seal does not roll backwards. Apply light coat of Transjel part No. J-36850, or equivalent.
2. Install spring and retainer assembly and snap ring retainer.
3. Compress spring and retainer assembly with clutch compressor tool No. J-39694, or equivalent.
4. Install snap ring, then remove clutch compressor.
5. Install apply plate. Align apply plate tangs with inserts in reverse clutch piston.
6. Install clutch plates. Alternate between fiber and steel plates, starting with a steel plate.
7. Install apply plate, stepped side up, then snap ring.
8. Install 2nd clutch outer race thrust washer.
9. Install 2nd sprag clutch into 2nd sprag outer race.
10. Install sprag race and clutch onto reverse clutch housing. Ensure correct sprag rotation as shown.
11. Install sprag clutch retainer, then new spiral snap ring. Ensure spiral snap ring tabs lock into place and snap ring is properly seated.