Axle Switches
Axle switch controls are listed here in alphabetical order. See Fig..
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Rear Drive Axle Differential Lock Switch
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Forward Drive Axle Differential Lock Switch
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Interaxle Lock Switch
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Lift Axle Switch
Fig. 1, Axle Switches
Note: See General Information for detailed information about drive axle functions.
Differential Lock Switch
The differential lock switch provides maximum traction for slippery conditions by forcing the wheels on each drive axle governed by the switch to rotate together. Engagement can be at any speed, provided the wheels are not slipping or spinning.
Interaxle Lock Switch
The interaxle lock switch allows the driver to lock the drive axles together, causing the drive axle shafts to rotate together. Use this feature only under adverse road conditions where greater traction is needed.
Leave the control in the UNLOCK position for normal highway operation. When a spinning or slipping action occurs at any of the drive wheels, press the upper half of the switch to LOCK the differential and prevent the wheels from spinning.
Notice: Do not shift into LOCK while the rear wheels are spinning. Come to a halt before engaging to prevent damage to the interaxle and main differentials.
Do not permit rear wheels to spin freely for more than ten seconds when traction is lost. Shift into LOCK to prevent damage to the interaxle and main differentials.
Lift Axle Switch
The lift axle switch controls the lift axle operation. Pushing the upper half of the switch will lower the lift axle.