Disassemble/assemble drive pinion

AR33.30-G-0460CC

28.7.14

FRONT AXLE

737.220/221/222/223/224

G33.30-3174-09

1	Retaining ring	5	Pinion flange	9	Tapered roller bearing
2	Serrated washer	6	Wear ring	10	Radial shaft sealing ring
3	Drive pinion	7	Old spring pin	11	Tapered roller bearing
4	Slotted nut	8	New spring pin

5	Pinion flange
9	Tapered roller bearing
12	Outer race
13	Outer race

G33.30-3163-01

G33.30-3168-01

	Disassemble
1	Disassemble front axle		AR33.10-G-0060CC
2	Remove retaining ring (1)
3	Remove tooth lock washer (2)
4	Mount drive pinion (3) onto mount and clamp in vise	 Mounting fixture	*425589003100
5	Unscrew slotted nut (4)	 Grooved nut wrench	*437589000700
6	Press drive pinion (3) off pinion flange (5)
7	Remove old spring pin (7)
8	Remove wear ring (6) and radial shaft sealing ring (10) from pinion flange (5)
9	Remove tapered roller bearing (9) from pinion flange (5)
10	Detach tapered roller bearing (11) from drive pinion (3)	 Puller	*000589453300
11	Remove both outer rings (12, 13) from pinion flange (5)
	Clean
12	Clean all parts
	Check
13	Check all parts for wear and damage	If there are problems:
		
		Replace worn or damaged parts.
		 The drive pinion (3) may only be replaced with the ring gear of the differential. Ensure manufacturing numbers are the same. Otherwise the differential may be damaged.
	Assemble
14	Pound both outer races (12, 13) of new tapered roller bearing (9, 11) using copper drift into pinion flange (5)	 The outer races (12, 13) of the new tapered roller bearing (9, 11) are moistened with a special corrosion adjusting oil. This special lubricating oil must not be wiped off nor brought into contact with other lubricants. Otherwise the friction torque adjustment may be faulty.
15	Press new tapered roller bearing (11) onto drive pinion (3)	 The new tapered roller bearing (11) is moistened with a special corrosion - adjusting oil. This special lubricating oil must not be wiped off nor brought into contact with other lubricants. Otherwise the friction torque adjustment may be faulty.
		 Assembly sleeve	*425589003500
16	Fit new roll pin (8) on drive pinion (3)	 Since the old tension sleeve (7) has already been deformed when it was first assembled, a new tension sleeve (8) must be used.
17	Install drive pinion (3) in pinion flange (5)
18	Press new tapered roller bearing (9) onto drive pinion (3)	 The new tapered roller bearing (9) is moistened with a special corrosion - adjusting oil. This special lubricating oil must not be wiped off nor brought into contact with other lubricants. Otherwise the friction torque adjustment may be faulty.
		 Assembly sleeve	*425589003500
19	Coat front face of tapered roller bearing (9) (hatched area) with long-life grease	 The long-life grease may not touch the roller surface area. An accurate bearing adjustment can only be made under these conditions. The service life of the axle drive is decisively influenced by this.
		Long-life grease	*BR00.45-Z-1001-06A
20	Coat new radial shaft sealing ring (10) with long-life grease	Long-life grease	*BR00.45-Z-1001-06A
21	Install new radial shaft sealing ring (10) into pinion flange (5)	 The spiral-type expander side of the radial shaft sealing ring (10) must face towards the tapered roller bearing (9).
		 Assembly sleeve	*425589003500
		 Insertion tool	*425589044300
22	Install new wear ring (6) into pinion flange (5)	 Assembly sleeve	*425589003500
		 Insertion tool	*425589044300
23	Screw on slotted nut (4) by hand
24	Adjust friction torque of drive pinion (3)		AR33.30-G-0458-06CC
		Friction torque of drive pinion	*BE33.30-N-1002-02B
		 Adjusting device	*405589012100
		 Mounting fixture	*425589003100
		 Grooved nut wrench	*437589000700
		 Torque wrench	*745589012100
		If the specified friction torque is exceeded:
		
		Repeat operation steps 4 to 24.
25	Secure slotted nut (4) using toothed lock washer (2) and circlip (1)
26	Assemble front axle		AR33.10-G-0060CC

Check values for drive pinion

Number	Designation			FRONT AXLE 737.220	FRONT AXLE 737.221/222/223/224
BE33.30-N-1002-02B	Friction torque of drive pinion	–	kpcm	65...75	65...75
		–	Nm	6,5...7,5	6,5...7,5