Differential Case: Removal
WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the axle shafts (4234). For additional information, refer to AXLE SHAFT .
- Wipe the lubricant from the internal working parts and inspect the parts for wear and damage.
- Rotate the differential assembly to check for roughness indicating bearing/gear damage.
- Using a suitable dial indicator and the special tool, measure and note the differential ring gear backface runout.
- Remove the bearing caps.
- Remove the bolts.
- Remove the bearing caps.
- Using a pry bar and a wood block, remove the differential assembly from the differential housing.
- Remove the bolts.
- Insert a punch in the bolt holes, and drive off the differential ring gear and, if necessary, the anti-lock speed sensor ring.
- If the differential ring gear backface runout measurement, taken at the beginning of this procedure, did not exceed the specification, proceed to the appropriate procedure as necessary: Drive Pinion , DIFFERENTIAL CASE AND RING GEAR - Conventional or DIFFERENTIAL CASE AND RING GEAR - Conventional or to Installation in this procedure. If the differential ring gear backface runout measurement, taken at the beginning of this procedure, exceeded the specification, the cause may be a warped differential ring gear, differential case/differential bearing damage. Proceed as follows to verify the cause of the excessive runout.
- Position the differential assembly, including the differential bearing cups (4222) and differential bearing shims (4067), in the differential housing. Install the bearing caps and the bolts.
- Position the special tool.
- Rotate the differential case to verify that the differential bearings (4221) have seated correctly.
- Position the special tool.
- Measure and note the differential case runout.
- If the runout does not exceed the specification, install a new differential ring gear and pinion. For additional information, refer to DRIVE PINION and to Installation in this procedure.
- If the runout exceeds the specification, the differential ring gear is true and the concern is due to either differential case/differential bearing damage. Proceed as follows.
- Using the special tools, remove the differential bearings.
- Using the special tool, install the new differential bearings.
- Position the differential assembly, including the differential bearing cups and differential bearing shims in the differential housing. Tighten bearing caps to specification.
- Position the special tool.
- Rotate the differential case to verify that the differential bearings have seated correctly.
- Position the special tool.
- Measure the differential case runout.
CAUTION:
Reinstall the differential pinion shaft (4211) and the bolt in the differential case (4204) after removing the axle shafts.
NOTE:
There is a space between the anti-lock speed sensor ring (4B409) and the differential ring gear for measuring the differential ring gear backface runout.
CAUTION:
Mark the position of the bearing caps, as the arrows may not be visible. Always install the bearing caps in their identical locations and positions.
WARNING:
Do not allow the differential assembly to fall.
CAUTION:
Place a wood block between the pry bar and the differential housing (4141) to protect the machined surface from damage.
CAUTION:
Do not damage the differential ring gear bolt hole threads.
CAUTION:
If removing the anti-lock speed sensor ring, discard it, and install a new anti-lock speed sensor ring during installation.
- If the runout does not exceed the specification, use the new differential bearings for assembly.
- If the runout exceeds the specification, install a new differential case. For additional information, refer to DIFFERENTIAL CASE AND RING GEAR - CONVENTIONAL or DIFFERENTIAL CASE AND RING GEAR - TRACTION-LOK .