Adjust gear backlash at differential assembly · ar3530b0475c · Mercedes-Benz WIS

AR35.30-B-0475C

Adjust gear backlash at differential assembly

12.02.16

Rear axle 745.0

Adjust gear backlash at differential assembly

B35.30-0156-01

B35.30-0157-01

With 2nd. speed - mod. HL 5/ DZ

1  Dial gauge

2 Hook plate

3 Adjustment device

	Adjust
1	Tighten the threaded rings until the bearings turn without any play and without pre-load	 The ring gear must turn even with small play between the teeth.
			*317589020700
2	Securely tighten the threaded rings and, at the same time, turn the ring gear applying some strong hits with a plastic hammer on the bushing covers and in the ring gear side
3	Release the threaded rings and, then, screw them again until they smoothly trust	 In this position the bearing must be without any play and without pre-load.
4	Put the magnetic block in the rear axle housing with the indicator support, placing the feeler on the pressure flank of one of the ring gear's tooth, with a previous tension of 1 mm		*001589532100
			*363589022100
5	Measure the play between the ring rear and pinion assembling teeth in four positions distant 90° among them and determine the smallest play point.
6	In the position where the smallest play was observed, adjust the play between the teeth for the smallest specified play.	 To adjust the play between the teeth, release a threaded ring and tighten the other in the same proportion in order to not change the bearings adjustment.	*BE35.31-B-1001-03C
7	Remove the indicator support and tighten the bushing cover bolts in the opposite side as the ring gear teeth		*BA35.30-B-1001-05E
8	Attach the adjustment device in the bushing cover with the respective bolts already tightened, with the device flag parallel to the ring gear		*354589002100
9	Place the magnetic base with the indicator support in the rear axle support and place the support in a straight angle in the adjustment device flag, adjusting to "zero" and with a previous tension of 1 mm.
			*363589022100
			*001589532100
10	Continuously turn the ring gear and simultaneously righten the threaded ring, in the side of the ring gear teeth until obtain the initial pre-load in the dial	 For used bearings, adjust the pre-load in the lower limit and for new bearing, in the upper limit.	*BE35.30-B-1001-03A
			*317589020700
11	Tighten the bushing cover bolts of the ring gear teeth side		*BA35.30-B-1001-05E
12	Turn the ring gear and check the final pre-load		*BE35.30-B-1001-03A
13	Check play between the ring gear pinion assembly teeth	 If the play between the teeth is not within the specified values, repeat the adjustment process.	*BE35.31-B-1001-03C
14	Adjust the pressure bolt	After tightening the pressure bolt counter-nut, the indicator displays a displacement of the bushing cover of 0.010 to 0.025 mm.
15	Check the contact marks for the ring gear teeth		AR35.30-B-0475-02A
			*BR00.45-B-1001-07A

Differential

Número	Denominação			Rear axle 745.0


BE35.30-B-1001-03A	Preload of the satellite box bearings	Before tightening the screws of the bearing lid	mm	0.030...0.050
		After tightening the screws of the bearing lid	mm	0.040...0.070