Differential Check - Tractech® Truetrac® (Dana)
WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- Shift the transmission into NEUTRAL.
- Raise and support the vehicle. Refer to JACKING & LIFTING .
- Spin either rear wheel.
- Both wheels must spin with a fluid motion. Any feeling of gripping and release/roughness indicates that additional inspection of the axle assembly is necessary. For additional information about axle disassembly and inspection, refer to REAR DRIVE AXLE/DIFFERENTIAL - DANA 80 or REAR DRIVE AXLE/DIFFERENTIAL - DANA S135 .
- Shift the transmission into gear.
- Spin either rear wheel.
- The other wheel must spin with a fluid motion in the opposite direction and at the same speed of the wheel being spun. Any feeling of gripping and release/roughness indicates that further inspection of the axle assembly is necessary. For additional information about axle disassembly and inspection, refer to REAR DRIVE AXLE/DIFFERENTIAL - DANA 80 or REAR DRIVE AXLE/DIFFERENTIAL - DANA S135 .