Checking should include the following steps:
- Raise the drive axle, following safety precautions.
- Install the wheel chocks.
- Release the parking brake.
- Manually turn one drive wheel. (The other should remain stationary.)
- Engage the differential lock.
- Manually turn one drive wheel. (The other should turn in the same direction.)
ASE 3: II. Drive Train: E. Drive Axles (P-2)
Process/Skill Questions:
- What damage could be caused by leaving the inter-axle differential lock engaged when highway driving?
- What damage might happen when the inter-axle disengages at highway speeds and when it engages at high speed?
- What steps should be performed to test whether the inter-axle lock is working properly?