Check wishbone control arm on driven rear axle · sm3200w0010a · Mercedes-Benz WIS

SM32.00-W-0010A

Check wishbone control arm on driven rear axle

31.01.2020

Model	963, 964 with rear axle 746.301/302, 748.28/29/595, 771.010/011/014/015
	Code: DR-LENKER

Operation no. of the operation texts or standard texts and flat rates
Category	Op. no.	Operation text	Time	Acc. no.	Code
N	021711	Check wishbone control arm on driven rear axle	0,2 h	32 910 94	DR-LENKER
N	021712	Replace wishbone control arm on one driven rear axle (after check)	0,8 h	32 910 94	DR-LENKER
N	021713	Replace wishbone control arm on 2 driven rear axles (after check)	1,3 h	32 910 94	DR-LENKER

Check wishbone control arm on driven rear axle

W32.00-A000-09

Vehicle with one driven rear axle, shown on rear axle 748.2 with installed correct version (A) of wishbone control arm (1)

1	Triangular control arm	6	Screw
2	Bolts	7	Driven rear axle
3	Bearing bracket in vehicle frame	A	Correct version (rounded connection to bearing bushing)
4	Nut	B	Incorrect version (straight connection to bearing bushing)
5	Bearing bracket on rear axle

W32.00-A001-09

Vehicle with 2 driven rear axles, shown on rear axle 748.2 with installed correct versions (A) of wishbone control arms (1)

1	Triangular control arm	6	Screw
2	Bolts	7	Driven rear axle
3	Bearing bracket in vehicle frame	8	2nd driven rear axle
4	Nut	A	Correct version (rounded connection to bearing bushing)
5	Bearing bracket on rear axle	B	Incorrect version (straight connection to bearing bushing)

Topical note	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Check
1	Check installed wishbone control arm (1) on driven rear axle (7).	If the correct version (A) of the wishbone control arm (1) is installed,
		
		on vehicles with 1 driven rear axle, do not perform any further operation steps and end measure.
		on vehicles with 2 driven rear axles, continue with operation step 2.
		If the incorrect version (B) of the wishbone control arm (1) is installed,
		
		replace wishbone control arm (1).
2	Check installed wishbone control arm (1) on 2nd driven rear axle (7).	Only on vehicles with 2 driven rear axles.
		If the correct version (A) of the wishbone control arm (1) is installed,
		
		do not carry out any further operation steps and end measure.
		If the incorrect version (B) of the wishbone control arm (1) is installed,
		
		replace wishbone control arm (1).
	Replace
3	Remove bolts (2) from bearing brackets in vehicle frame (3).
4	Remove nuts (4) from bearing bracket on rear axle (5).
5	Remove wishbone control arm (1).	 With regard to return shipment or scrapping of removed parts, please observe the information in your warranty systems.
6	Position new wishbone control arm (1) with bolts (2) on bearing brackets in vehicle frame (3).	 Note installation position of wishbone control arm (1): The part number stamped onto the wishbone control arm (1) must point downward.
7	Position new wishbone control arm (1) on bearing bracket on rear axle (5) using bolts (6).
8	Attach nuts (4) to bolts (6) and tighten lightly by hand.
9	Tighten bolts (2) on bearing brackets in vehicle frame (3).	 Wishbone control arm to vehicle frame bearing bracket	*BA35.15-N-1003-03G
10	Tighten nuts (4) on bearing bracket on rear axle (5).	 Wishbone control arm to bearing bracket on rear axle	*BA35.15-N-1001-03G

 Control arm

Number	Designation			Rear axle 771.010/011/014/015 in model 963, 964	Rear axle 746.301/302 in model 963, 964
BA35.15-N-1001-03G	Wishbone control arm to bearing bracket on rear axle	Stage 1	Nm	300	300
		Stage 2	°	90	90

 Control arm

Number	Designation			Rear axle 748.28/29 in model 963, 964	Rear axle 748.595 in model 963, 964
BA35.15-N-1001-03G	Wishbone control arm to bearing bracket on rear axle	Stage 1	Nm	300	300
		Stage 2	°	90	90

 Control arm

Number	Designation			Rear axle 771.010/011/014/015 in model 963, 964	Rear axle 746.301/302 in model 963, 964
BA35.15-N-1003-03G	Wishbone control arm to vehicle frame bearing bracket	M18x1.5	Nm	350	350
		M20x1.5	Nm	460	460

 Control arm

Number	Designation			Rear axle 748.28/29 in model 963, 964	Rear axle 748.595 in model 963, 964
BA35.15-N-1003-03G	Wishbone control arm to vehicle frame bearing bracket	M18x1.5	Nm	350	350
		M20x1.5	Nm	460	460

Parts ordering note

Part no.	Designation	Quantity
A 942 350 12 05	Wishbone control arm, correct version (A)	n. B.

Referenced documents

ah0000p002001a Notes on threaded connections fastened using a tightening angle-based tightening process
ah0000z001901a Notes on safety-relevant components