Rear Differential Ring And Pinion: Installation
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- 1.
Position the Drive Pinion Bearing Cup Installer, Rear Axle Pinion Bearing Cup Installers and the inner and outer drive pinion bearing cups in their respective bores.- 1.
Place the Rear Axle Pinion Bearing Cup Installer on the outer drive pinion bearing cup.
- 2.
Place the Rear Axle Pinion Bearing Cup Installer on the inner drive pinion bearing cup.
- 3.
Install the Drive Pinion Bearing Cup Installer.
- 1.
- 2.
Tighten the Drive Pinion Bearing Cup Installer to fully seat the differential drive pinion bearing.
- 3.NOTE: If a feeler gauge of the specification shown can be inserted between a cup and the bottom of its bore at any point around the cup, the cup is not correctly seated.
Make sure the differential pinion bearing cups are correctly seated.
- 4.NOTE: Use the same drive pinion bearings and the drive pinion bearing adjustment shim from the drive pinion bearing adjustment shim selection procedure for final assembly or damage to the component may occur.NOTE: Install new drive pinion bearings without any additional lubricant since the anti-rust oil provides adequate lubricant without upsetting the drive pinion bearing preload settings.
Install the new drive pinion bearings and Drive Pinion Depth Gauge/Aligner, Drive Pinion Gauge Tube, Drive Pinion Depth Gauge/Aligner and Adapters as shown.
Item Part Number Description 1 4621 Outer pinion bearing 2 205-160-160 Adapter for 205-S127 3 4630 Inner pinion bearing 4 205-383-383 Depth Gauge/Aligner, Drive Pinion 5 205-159-159 Adapter for 205-S127 6 205-377-377 Drive Pinion Gauge Tube 7 205-937-937 Adapter, Pinion Aligning 8 4010 Rear axle housing outer (front) pinion bearing 9 205-111-111 Adapter for 205-S127
- 5.NOTE: This step duplicates drive pinion bearing preload.
Tighten the Adapter to the specified rotational torque.
- Tighten to 2.2 Nm (20 lb-in) rotational torque.
- 6.NOTE: Position the Adapter so it does not contact the housing.NOTE: Offset the Adapter to obtain an accurate reading.
Rotate the Adapter several half turns to seat the drive pinion bearings and position the Adapter as shown.
- 7.
Install the Drive Pinion Gauge Tube, the 2 bearing caps and the 4 bolts.- Tighten to 112 Nm (83 lb-ft).
- 8.NOTE: Drive pinion bearing adjustment shims must be flat and clean.NOTE: A slight drag should be felt for correct shim selection. Do not attempt to force the pinion shim between the Adapter and the Gauge Tube. This will minimize selection of a pinion shim thicker than required, which results in a deep tooth contact in the final assembly of integral rear axle assemblies.
Use a drive pinion bearing adjustment shim as a gauge for shim selection.
- 9.
Position the drive pinion bearing adjustment shim and the inner pinion bearing on the drive pinion gear stem.
- 10.
Using the Bearing/Oil Seal Plate and Drive Pinion Bearing Cone Installer and a suitable press, firmly seat the drive pinion bearing adjustment shim and inner pinion bearing on the drive pinion gear stem.
- 11.NOTE: Make sure the splines on the drive pinion gear stem are free of burrs. If burrs are evident, remove them using a fine crocus cloth.
Place a new differential drive pinion collapsible spacer on the drive pinion gear stem against the pinion stem shoulder.
- 13.NOTE: Installation without the correct tool can result in early seal failure. If the rear axle drive pinion seal becomes cocked during installation, remove it and install a new one.NOTE: Coat the lips of the rear axle drive pinion seal with grease.
Place the drive pinion oil seal on the Drive Pinion Oil Seal Installer and drive the seal into place.
- 14.NOTE: Lubricate the pinion flange splines with rear axle lubricant.
Install the drive pinion gear with the differential drive pinion collapsible spacer in the differential housing.
- 15.NOTE: Disregard the scribe marks if a new pinion flange is being installed.
Align the pinion flange with the drive pinion shaft.
- 16.
With the drive pinion in the axle housing, install the pinion flange using the Drive Pinion Flange Installer.
- 18.NOTE: Do not, under any circumstance, loosen the pinion nut to reduce drive pinion bearing preload. If it is necessary to reduce drive pinion bearing preload, install a new differential drive pinion collapsible spacer and pinion nut or damage to the component may occur.NOTE: Remove the Drive Pinion Flange Holding Fixture while taking drive pinion bearing preload readings with the Nm (lb-in) torque wrench.
Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, tighten the pinion nut.
- Rotate the drive pinion gear occasionally to make sure the drive pinion bearings seat correctly. Take frequent drive pinion bearing preload readings by rotating the drive pinion gear with a Nm (lb-in) torque wrench.
- 19.
Tighten the pinion nut to set the drive pinion bearing preload. Refer to the torque specification for drive pinion bearings in the Specifications .
- 20.
Using the Differential Carrier Bearing Installer, press the left and right differential bearing on the differential assembly.
- 21.
Install the differential ring gear.- 1.
Place the differential ring gear on the differential assembly.
- 2.
Hand-start 3 new ring gear bolts to align the holes in the differential ring gear and the differential assembly.
- 3.
Place the differential assembly and differential ring gear onto the press bed blocks with the differential ring gear teeth facing downward.
- 4.
Press the differential ring gear into place.
- 1.
- 23.
Install the differential assembly in the following sequence.- 1.
Position the differential bearing cups on the differential bearings.
- 2.
Lower the differential assembly in place.
- 1.
- 24.NOTE: Differential bearing shims are to be installed with the chamfer facing outboard.
Install a differential bearing shim of the thickness shown on the LH side of the differential case.
- 25.NOTE: Apply pressure toward the left side to make sure the left bearing cap is seated.
Install the left bearing cap and loosely install the 2 bearing cap bolts.
- 26.NOTE: Apply pressure toward the left side to make sure the left bearing cap is seated.
Install progressively thicker differential bearing shims on the right side until the thickest differential bearing shim can be inserted by hand.
- 30.
Adjust the ring gear backlash. Refer to Ring Gear Backlash Adjustment .
- 32.NOTE: The torque arm bolts must be tightened in the sequence below. If there is clearance in-between the head of the bolt and the torque arm, remove the torque arm bolts and reinstall following the sequence below.
Position the torque arm to the rear axle housing and install the new torque arm bolts hand tight.
- Tighten item 1 to 27 Nm (20 lb-ft).
- Tighten item 2 to 203 Nm (150 lb-ft).
- Tighten item 1 to 203 Nm (150 lb-ft).
- 33.
Install the rear axle assembly. Refer to Axle Assembly .