Axle

The Ford integral carrier rear axle assembly is an integral type housing, hypoid gear design with the centerline of the pinion set below the centerline of the ring gear.

The hypoid ring gear and pinion consists of a 10.25-inch diameter ring gear and an overhung drive pinion. The pinion is positioned by selected pinion shims and supported by two opposed tapered roller bearings. Pinion bearing preload is adjusted by the pinion nut and a collapsible spacer.

The rear axle housing (4010) consists of a cast center section with two steel tubes and a stamped rear cover. The axle housing cover (4033) uses a silicone sealant as a gasket.

The differential case (4204) is a one-piece design with two openings to allow for assembly of the internal components and lubricant flow. The differential pinion shaft (4211) is retained with a threaded bolt. The differential case is mounted in the carrier between two opposed tapered roller bearings and is positioned by selected shims. The bearings are retained in the carrier by removable bearing retaining caps.

Wheel end service procedures for the semi-floating axle are included in this section. For full-floating axle service procedures, refer to Section 05-02B.

The rear axle drive pinion receives its power from the engine through the transmission and driveshaft (4602). The pinion gear rotates the differential case through engagement with the ring gear, which is bolted to the case outer flange.

Inside the differential case, two differential pinion gears (4215) are mounted on the differential pinion shaft pinned (with lock bolt) to the case. These differential pinion gears are engaged with the differential side gears (4236), to which the axle shafts (4234) are splined. Therefore, as the differential case turns, it rotates the axle shafts and rear wheels. When it is necessary for one wheel and axle shaft to rotate faster than the other, the faster turning differential side gear causes the differential pinion gears to roll on the slower turning differential side gear to allow differential action between the two axle shafts.

Integral Carrier, Rear Axle Assembly

Item	Part Number	Description
1	4851	Rear Axle Universal Joint Flange
2	4621	Differential Pinion Bearing (Outer)
3	4B409	Anti-Lock Speed Sensor Ring
4	4236	Differential Side Gear
5	4204	Differential Case
6	—	Ring Gear (Part of 4209)
7	4067	Differential Bearing Shim
8	4221	Differential Bearing
9	—	Drive Pinion Gear (Part of 4209)
10	4630	Differential Pinion Bearing (Inner)
11	4676	Rear Axle Drive Pinion Seal

Integral Carrier, Rear Axle Assembly, Disassembled View, Semi-Floating Axle, Typical

Item	Part Number	Description
1	—	Ratio Tag (Not Serviced)
2	390864-S2	Cover Screw
3	4033	Axle Housing Cover
4	4228	Differential Side Gear Thrust Washer
5	4236	Differential Side Gear
6	4241	Differential Pinion Shaft Lock Pin
7	4N237	U-Washer (Semi-Float Only)
8	4230	Differential Pinion Thrust Washer
9	4215	Differential Pinion Gear
10	4211	Differential Pinion Shaft
11	4221	Differential Bearing
12	4067	Differential Bearing Shim
13	4222	Differential Bearing Cup
14	43114-S100	Ring Gear Bolt
15	4204	Differential Case
16	4B409	Anti-Lock Speed Sensor Ring
17	4209	Differential Ring Gear and Pinion
18	4663	Drive Pinion Bearing Adjustment Shim
19	4630	Differential Pinion Bearing (Inner)
20	4628	Rear Axle Pinion Bearing Cup (Inner)
21	46157-S100	Differential Bearing Cap Bolt
22	—	Differential Bearing Cap (Part of 4010)
23	2C190	Rear Brake Anti-Lock Sensor
24	390356	Bolt, Rear Brake Anti-Lock Sensor
25	4022	Rear Axle Housing Vent
26	4010	Rear Axle Housing
27	390943-S100	Filler Plug
28	4662	Differential Drive Pinion Collapsible Spacer
29	4670	Rear Axle Drive Pinion Shaft Oil Slinger
30	4851	Rear Axle Universal Joint Flange
31	389546-S100	Pinion Nut
32	4676	Rear Axle Drive Pinion Seal
33	4621	Differential Pinion Bearing (Outer)
34	4616	Differential Drive Pinion Bearing Cup (Outer)
35	4234	Axle Shaft
36	1225	Rear Wheel Bearing
37	1177	Inner Wheel Bearing Oil Seal
38	1107	Lug Bolt
39	1126	Brake Drum
40	391220-S56	Brake Backing Plate Nut
41	2248	Bolt, Brake Backing Plate
A	—	Tighten to 38-52 Nm (28-38 Lb-Ft). For Ratio Tag Hold-Down Bolt, Tighten to 24-38 Nm (18-38 Lb-Ft).
B	—	Apply Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5 (Type II). Tighten to 20-40 Nm (15-30 Lb-Ft).
C	—	Apply Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5 (Type II). Tighten to 136-163 Nm (100-120 Lb-Ft).
D	—	Tighten to 109-129 Nm (80-95 Lb-Ft)
E	—	Tighten to 34-40 Nm (25-30 Lb-Ft)
F	—	Tighten to 20 Nm (15 Lb-Ft)
G	—	Tighten to 20-40 Nm (15-30 Lb-Ft)
H	—	Pinion Bearing Preload For Used Bearings 0.9-1.5 Nm (8-14 Lb-In); For New Bearings 1.8-3.3 Nm (16-29 Lb-In).
J	—	Tighten to 68-95 Nm (50-70 Lb-Ft)

Integral Carrier, Rear Axle Assembly, Disassembled View, Full-Floating Axle, Typical

Item	Part Number	Description
1	4033	Axle Housing Cover
2	—	Ratio Tag (Not Serviced)
3	390864-S2	Screw
4	4230	Differential Pinion Thrust Washer
5	4215	Differential Pinion Gear
6	4211	Differential Pinion Shaft
7	4236	Differential Side Gear
8	4228	Differential Side Gear Thrust Washer
9	4221	Differential Bearing
10	4067	Differential Bearing Shim
11	4222	Differential Bearing Cup
12	43114-S100	Ring Gear Bolt
13	4204	Differential Case
14	4663	Drive Pinion Bearing Adjustment Shim
15	46157-S100	Bearing Cap Bolt
16	—	Differential Bearing Cap (Part of 4010)
17	2C190	Rear Brake Anti-Lock Sensor
18	390356	Bolt, Rear Brake Anti-Lock Sensor
19	4022	Rear Axle Housing Vent
20	4010	Rear Axle Housing
21	390943-S100	Filler Plug
22	4662	Differential Drive Pinion Collapsible Spacer
23	4670	Rear Axle Drive Pinion Shaft Oil Slinger
24	4851	Rear Axle Universal Joint Flange
25	389546-S100	Pinion Nut
26	4676	Rear Axle Drive Pinion Seal
27	4621	Differential Pinion Bearing (Outer)
28	4616	Differential Drive Pinion Bearing Cup (Outer)
29	1240	Outer Bearing
30	1A124	Hub Nut
31	1126	Brake Drum
32	4234	Axle Shaft
33	46053-S100	Bolt, Axle Shaft
34	390258-S	O-Ring, Axle Shaft
35	1109	Rear Hub
36	390268-S	Press Fit Stud
37	2211	Brake Backing Plate
38	1239	Outer Bearing Cup
39	1202	Bearing Cup
40	1244	Rear Wheel Bearing Inner Cone and Roller
41	1250	Rear Wheel Bearing Oil Slinger
42	1177	Inner Wheel Bearing Oil Seal
43	—	Keyway (Part of 4010 Housing)
44	—	Spindle (Part of 4010 Housing)
45	4628	Rear Axle Pinion Bearing Cup (Inner)
46	4630	Differential Pinion Bearing (Inner)
47	4209	Differential Ring Gear and Pinion
48	4B409	Anti-Lock Speed Sensor Ring
49	4241	Differential Pinion Shaft Lock Pin
50	—	Four Clearance Holes in Drum for Wheel Pin and Hub (Part of 1126)
51	1107	Lug Bolts
52	—	Two Wheel Pin Locating Holes (Part of 1116)
53	1012	Lug Nut
54	—	Locating Hole in Wheel (Part of 1001)
55	—	Locating Hole in Wheel (Part of 1001)
56	305136-S7	Locating Pin in Wheel (Part of 1001)
A	—	Tighten to 38-52 Nm (28-38 Lb-Ft). For Ratio Tag Hold-Down Bolt, Tighten to 24-38 Nm (18-38 Lb-Ft).
B	—	Apply Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5 (Type II). Tighten to 136-163 Nm (100-120 Lb-Ft).
C	—	Tighten to 109-129 Nm (80-95 Lb-Ft)
D	—	Tighten to 34-40 Nm (25-30 Lb-Ft)
E	—	Tighten to 20 Nm (15 Lb-Ft)
F	—	Tighten to 20-40 Nm (15-30 Lb-Ft)
G	—	Pinion Bearing Preload For Used Bearings 0.9-1.5 Nm (8-14 Lb-In); For New Bearings 1.8-3.3 Nm (16-29 Lb-In).
H	—	Tighten to 95-115 Nm (70-85 Lb-Ft)
J	—	Apply Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5. Tighten to 20-40 Nm (15-30 Lb-Ft).
K	—	Tighten to 170-230 Nm (126-170 Lb-Ft)