W350 1 Ton Pickup 4WD V8-360 5.9L VIN 1 4-bbl (1988)
FAILURE CODE:
X5 - Teeth damaged or worn
Figure 2
SPEEDOMETER DRIVE (WORM) GEAR REPLACEMENT
1.
Raise vehicle.
2.
Scribe alignment marks on the propeller shaft universal joint and rear axle pinion flange and transmission flange to ensure correct reassembly.
3.
Remove the propeller shaft.
4.
Disconnect the speedometer cable at the transmission, remove the speedometer pinion adapter from the transmission rear retainer housing.
5.
Position holding tool C-3281 over the yoke flange and remove nut.
CAUTION:
THE TORQUE ON THE YOKE NUT IS 280 FT.LBS (390 N-m).
6.
Remove yoke and seal.
7.
Remove the rear speedometer gear spacer and drive gear - Figure 2.
8.
Install the new speedometer drive gear (P/N 4549212).
9.
Install the rear speedometer spacer.
10.
Install a new output shaft seal (P/N 4504583).
11.
Install yoke.
12.
Apply Lock N'Seal P/N 4318031 (LOCTITE 242) to the yoke nut threads.
13.
Install yoke nut and tighten to 280 ft.lbs (390 N-m) torque.
14.
Inspect the speedometer pinion gear and replace if required.
