BIGFOOT GEAR HOUSING
90-857046R1 NOVEMBER 2001 Page 6B-49
DETERMINING FORWARD GEAR BACKLASH
NOTE: Read entire procedure before attempting any change in shim thickness.
1. To obtain correct pinion gear depth, refer to “Determining Pinion Gear Depth,” preced-
ing.
2. Install Bearing Preload Tool (91-14311A2) on drive shaft. Refer to “Determining Pinion
Gear Depth,” preceding.
3. Install components as shown.
4. While holding the driveshaft (to prevent from turning), torque the puller bolt to 45 lb-in.
5. Rotate driveshaft 5-10 revolutions. This should properly seat the forward gear tapered
roller bearing. Repeat step 4.
53936
a
b
d
c
a- Propeller Shaft*
b- Bearing Carrier* (Assembled)
c- Puller Jaws (91-46086A1)
d- Puller Bolt (91-85716)
Puller Bolt Torque
45 lb-in. (5 Nm)
*Refer to “Bearing Carrier and Propeller Shaft Installation,” following.