938G Wheel Loader and IT38G Integrated Toolcarrier Power Train Caterpillar


Bevel Gear and Pinion (Fixed and Oscillating Axles)

Usage:

IT38G 1CW



Illustration 1g00441183

(1) Torque for 16 bolts ... 95 ± 10 N·m (70 ± 7 lb ft)

Note: After the bolts are torqued to the specification, tighten the bolts by an additional 1/2 turn.

(2) Backlash between the bevel gear and the pinion shaft ... 0.25 + 0.10 - 0.08 mm (0.010 + 0.004 - 0.003 inch)

(3) Tighten the nut until the torque wrench reading corresponds with the value in the following table:

Table 1
Pinion Rolling Torque    
    Actual Torque at the Pinion     Torque Wrench Reading (1)    
New Bearings    
0.7 to 1.4 N·m (6 to 12 lb in)    

0.45 to .90 N·m (4 to 8 lb in)    
Used Bearings    
0.35 to 0.7 N·m (3 to 6 lb in)    

0.23 to 0.45 N·m (2 to 4 lb in)    
( 1 ) These readings are applicable when you are using a 203 mm (8.0 inch) torque wrench.

Note: The nut may be reused if the collar is not cracked during removal or during restaking.




Illustration 2g00441222

Dimensions for a staked nut

Dimension (A) ... 10 to 30 degrees
Dimension (B) ... 7.5 to 8.0 mm (.30 to .32 inch)
Dimension (C) ... 4.7 mm (.19 inch)
Dimension (D) ... 2.5 mm (.10 inch)

Caterpillar Information System:

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