GMC 1989 Light Duty Truck, Repair Manual, Page: 903 / 998

HM-117 TRANSMISSION 7B2-11
290
227
236
227. Counter Gear
233. Spacer
234. Driven Gear
235. Thrust Washer
236. Snap Ring
290. 3rd Speed Gear
B-08829
Figure 2 2 —Countergear
Figure 2 4 — R em o vin g th e D riven G ear
I?
*
Figure 2 5 — Installing the 3rd Speed Gear
Clean
Countergear and the gears in suitable solvent and
air dry.
Inspect
Countergear and the gears for nicks, burrs, and
broken teeth.
The splined area on the countergear for chips and
wear.
A ssem ble (Fig ure 2 2 )
Tools Required:
J 22873 Mainshaft Bushing Installer
J 22830-A Snap Ring Installer
• A minimum press of 681 kg (1500 lbs.) is
required to move each gear. If less pressure is
required, replace the gear(s) or the shaft, or
both.
1. 3rd speed gear (290) (figure 25).
• The gear is marked “ FRONT” in the web area,
as shown in figure
22
.
2. Spacer (233).
3. Driven gear (234), using J 22873 (figure 26).
4. Thrust washer (235).
5. New snap ring (236), using J 22830-A and J 22873
figure 27).
Im portant
Do not bend or damage the thrust washer.
The snap ring should be tight in the groove
with no side play.
B-05187
B-05186
J 8176