Input Internal Gear And Output Shaft - GMC T Series 1994 Repair Manual

Input internal gear (664) for:
- Cracks.
- Damaged spline or gear teeth.
Input carrier to reaction shaft thrust bearing
(663) for wear or damage.
Output shaft (687) for:
- Plugged or restricted lube passages.
- Damaged splines or ring groove.
- Damaged governor drive gear teeth.
- Burrs or damage to the front of the shaft at
seal area. (Polish with crocus cloth if
necessary).
- Burrs or damage to bearing journals.
664
664 GEAR, INPUT INTERNAL
666 SHAFT, REACTION CARRIER
668 RING, REACTION SHAFT/INTERNAL GEAR RETAINER
Figure 46 Input Internal Gear and Reaction Shaft
Transmission Output Speed Sensor Rotor
Figure 47
Tools Required:
J 21427-01 S peedom eter G ear P uller
Adapter
J 8433 Speedometer Gear Puller
J 36352-6 "C" Washer
J 36352-4 Rotor Installer
Mechanical press
I p ! Inspect
Figure 47
• Speed sensor rotor on output shaft for tooth
damage.
f T ] Important
• If rotor is damaged, replace it. Do not reuse a
rotor that has been removed.
B Remove or Disconnect
Figure 47
• Install J 21427 with J 8433 and remove rotor.
666 668
RH0143-4L60-E
Install or Connect
Figure 47
1. Place new rotor over output shaft.
2. Place J 36352-4 in groove on output shaft.
3. Place J 36352-6 on shaft and press to make
contact with J 36352-4.
REMOVAL
J 8433
687 SHAFT, OUTPUT
699 ROTOR, INTERNAL TRANSMISSION SPEED SENSOR
Figure 47 Transmission O utput Speed Sensor Rotor

Input Internal Gear and Output Shaft

Figures 48 and 49
Tool Required:
J 29837 Output Shaft Support Fixture
Install or Connect
1. Reaction shaft (666) into the input internal gear
(664).
2. Retainer ring (668) into the input internal gear.
3. Input internal gear and shaft assembly into the
sun gear shell.
• Index the shaft spline into the reaction
carrier.
4. Thrust bearing (663) onto the reaction carrier
shaft.
• Outer race goes toward the reaction carrier
shaft.
5. Output shaft (687) into the transmission.
• Index the splines with the mating parts.
6. J 29837 onto the case.
• Position upwards as far as possible to
support the output shaft.
INSTALLATION
PRESS
J 36352-4
J 36352-6
RH0144-4L60-E