Remove/install drive pinion

AR35.30-B-0458D

04.08.2020

Rear axle	741.914/918/935/937/951, 742.80, 745.511/514/518/519/533/9, 746.86/87/880/990/991/994/995/997
	plain-flanged

Modification notes

23.08.2018	Modified claw wrench for the pinion threaded ring on work steps 3, 15, and 17.
21.08.2019	Threaded rings of pinion bearings	BA35.30-B-1002-06C
21.08.2019	Pinion (basic depth and thickness or compensation washers)	BE35.31-B-1005-03C
30.10.2019	Pinion (basic depth and thickness or compensation washers)	BE35.31-B-1005-03C

1	Coupling flange
2	Threaded ring
3	External tapered roller bearing
4	Split ring
5	Lock plate
6	Compensating washer
7	Roller bearing
8	Lock-ring

B35.31-0051-01

B35.31-0050-01

	Remove
1	Remove the differential with ring gear		AR35.30-B-0464B
2	Remove the lock plate (5)
3	Remove the lock ring (2)	 Turn the threaded ring (2) a few turns and then move the pinion away In order to prevent deformation of the flange deflector.
		 Hit the inner end of the pinion using a mandrel of soft material. Repeat this operation until the threaded ring is completely unscrewed (2).
		 Claw wrench	*055589030700
		 Torque multiplier	*000589021300
4	Prepare the pinion set for removal	 Install two screws in the coupling flange (1), by holding the threaded ring (2) against the external bearing cap (3). This feature will prevent the split ring (4) from falling into the oil groove in the housing.
5	Remove the pinion set	 Hit the end of the pinion using a mandrel of soft material.
6	Remove the compensator washers (6)
7	Remove the outer race of the cylindrical rollers bearing (7)		AR35.30-B-0440-04A
		 Drift	*310589001500
8	Disassemble the pinion housing	.	AR35.30-B-0459A
	Install
9	Assemble the pinion set		AR35.30-B-0459A
10	Install the external race of cylindrical roller bearings (7)	.	AR35.30-B-0440-04A
		 Drift	*310589001500
11	Install the compensation washer (6)	 Install compensation washers (6) on the pinion housing inside it.
12	Prepare the pinion set for installation	 Install two screws in the coupling flange (1), by holding the threaded ring (2) against the external bearing cap (3). This feature will prevent the split ring (4) from falling into the oil groove in the housing.
13	Install the pinion set
			WF58.50-B-3531-03A
		 Install the plastic sleeve in the external race of cylindrical roller bearings (7).
		 Lightly hit the pinion assembly until the threaded ring touches the front face of the housing and thread it manually.
		 Apply a sealing agent on the screwed surface of the ring.
		Terolan 307/II, Dichtin 51, epple 22 sealant	*BR00.45-Z-1018-01A
14	Remove the two screws which have been used in the installation
15	Tighten the screw collar (2)	 Threaded rings of pinion bearings	*BA35.30-B-1002-06C
		 Torque multiplier	*000589021300
		 Claw wrench	*055589030700
16	Check the basic measurement of the pinion depth		AR35.30-B-0458-01B
		Pinion (basic depth and thickness or compensation washers)	*BE35.31-B-1005-03C
		 Magnetic block	*361589002100
		 Adjusting device	*385589042100
		 Dial gage	*001589532100
17	Retighten the threaded ring (2)	 Apply a sealing agent on the screwed surface of the threaded ring (2).
		 Threaded rings of pinion bearings	*BA35.30-B-1002-06C
		Terolan 307/II, Dichtin 51, epple 22 sealant	*BR00.45-Z-1018-01A
		 Torque multiplier	*000589021300
		 Claw wrench	*055589030700
18	Lock the threaded ring with lock plate (5)
19	Install the differential with ring gear		AR35.30-B-0464B

Differential. ring ear and pinion check values

Number	Designation			Rear axles 742.80, 745.5, 745.9, 746.5, 746.86, 746.87, 746.880, 746.97	Rear axles 741.91/93/95, 746.991/994, 746.995/997
BE35.31-B-1005-03C	Pinion (basic depth and thickness or compensation washers)	Basic depth	mm	98,00	98,00
		Thickness of the compensating washers	mm	0,10, 0,15, 0,20, 0,25, 0,50	0,10, 0,15, 0,20, 0,25, 0,50

 Pinion

Number	Designation			Rear axle 746.86/87/88/891/97/99	Rear axle 741.91. 742.8
BA35.30-B-1002-06C	Threaded rings of pinion bearings	M115	Nm	-	-
		M140	Nm	-	-
		M150	Nm	-	-
		M170	Nm	1000...1200	1000...1200