Disassemble/assemble drive pinion

AR33.30-W-0460B

1.4.10

FRONT AXLE 731.720, 733.050

D35.30-0122-06

1 Collar nut

2 Connector flange

3 Radial sealing ring

4 Threaded ring

5 Spacer ring

6 Outer tapered roller bearing

7 Outer race of outer bearing

8 Compensating ring (split)

9 Retaining ring

10 Inner race

11 Drive pinion

12 Inner tapered roller bearing

13 Inner race of outer bearing

14 Spacer ring

	Disassemble
1	Remove front axle drive shafts		AR33.30-W-0100D
2	Remove ring gear with differential		AR33.30-W-0464B
3	Remove drive pinion		AR33.30-W-0458B
4	Release and unscrew collar nut (1)	 Fit retainer wrench on coupling flange (2)
		 Socket	*001589740900
		 Retainer wrench	*717589003100
		 Ratio wrench	*000589696300
5	Detach coupling flange (2) from drive pinion (11)
6	Remove threaded ring (4) and shim (5) from drive pinion (11)
7	Remove radial sealing ring (3) from threaded ring (4)
8	Pull off outer and inner tapered roller bearings (6 and 12)		*000589453300
	Assemble
9	Drive inner tapered roller bearing (12) onto drive pinion (11)	 Heat inner tapered roller bearing (12) to approx. 80 °C
10	Fit inside outer race (13), shim (14) and outside outer race (7)
11	Drive outer tapered roller bearing (6) onto drive pinion (11)	 Heat outer tapered roller bearing (6) to approx. 80 °C
12	Fit shim (5)
13	Install new radial sealing ring (3) in threaded ring (4) and fit threaded ring (4) on drive pinion (11)		*731589001500
		 Coat radial sealing ring (3) without rubberized external surface with sealant	*BR00.45-Z-1012-01A
		 Lightly grease sealing lips and pack space between dust and sealing lips with multi-purpose grease	*BR00.45-Z-1034-06A
14	Push on coupling flange (2)	 Lightly oil splines on drive pinion (11) with transmission oil	*BR00.45-Z-1023-06A
15	Tighten new collar nut (1)	 Fit retainer wrench on coupling flange (2)
			*BA33.30-N-1005-01E
		 Socket	*001589740900
		 Ratio wrench	*000589696300
		 Retainer wrench	*717589003100
16	Fit and install compensating ring (8) on drive pinion	 The compensating ring (8) must fit snugly between the outer races (13 and 7)	AR33.30-W-0460-04A
17	Checking friction torque of tapered roller bearings		AR33.30-W-0470-04C
			*BE33.30-N-1001-02D
	Clamp for clamping the assembled drive pinion		WF58.50-N-3530-05B
		 Thoroughly oil tapered roller bearings	*BR00.45-Z-1023-06A
			*001589740900
			*745589012100
18	Secure collar nut (1)		AR33.30-W-0085-03A
19	Installing drive pinion		AR33.30-W-0458B
20	Install crown wheel with differential		AR33.30-W-0464B
21	Install front axle drive shafts		AR33.30-W-0100D

Test values for drive pinion

Number	Designation		Front axle 731.720, 733.050


BE33.30-N-1001-02D	Friction coefficient of tapered roller bearing	Nm	1.4 to 4.2

 Front axle drive

Number	Designation			Front axle 731.720, 733.050


BA33.30-N-1005-01E	Collar nut, coupling flange to drive pinion gear	M321	Nm	300
		M401.5	Nm	360

731 589 00 15 00

Torque wrench

Drift

Wrench socket

Retainer wrench

001 589 74 09 00

745 589 01 21 00

717 589 00 31 00

000 589 69 63 00

Ratio wrench

Puller

000 589 45 33 00

Repair materials

Number	Designation	Order number
BR00.45-Z-1012-01A	Omnifit FD 3041 sealing compound	A 002 989 47 20 10
BR00.45-Z-1023-06A	Hypoid gear oil	A 000 989 28 03
BR00.45-Z-1034-06A	MB multipurpose grease	A 001 989 34 51 10

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