Adjusting play of disk brake

AR42.10-W-0180A

11.1.12

MODEL 375.1, 970, 972, 974, 975, 976
with SB 6000, SN 6000 disk brakes

MODEL 375.3 /4, 950, 952, 953, 954, 957
With disk brake SB 7000, SN 7000

MODEL 374, 930, 932, 933, 934, 940, 942, 943, 944, 958.2 /4
With disk brake SN 7000

W42.10-1320-01

1 Brake caliper

10 Inner brake shoe

2 Brake disk

10 Inner brake shoe

13 Thrust piece

15 Use a suitable tool (e.g. screwdriver).

W42.10-1321-01

W42.10-1322-05

13 Thrust piece

14 Feeler gauges (length  220 mm)

A Clearance (between brake lining and thrust piece)

Modification notes

3.11.11

Work procedure completely revised.

	Removing
1	Remove wheel		AR40.10-W-1100A
2	Remove retaining bracket from brake pads		AR42.10-W-0170-04H
	Checking
3	Slide brake caliper (1) towards inner brake pad (10)
4	Push inner brake pad (10) away from thrust pieces (13) and up against the brake disk (2)	 Position suitable tool (15) between thrust pieces (13) and inner brake pad (10).
5	Check clearance (A) across total surface of both thrust pieces (13)	 To avoid any faulty measurements two feeler gauges (14) (length 220 mm) must be used simultaneously for the measurement. Otherwise the brake may malfunction.
		Clearance (A) on front axle	*BE42.10-N-1002-08A
		Clearance (A) on rear axle	*BE42.10-N-1002-09A
		 If necessary, adjust clearance (A).
	Adjust
6	Position box wrench and adjust adjuster using hexagon adapter far enough until the clearance (A) is reached	 Both feeler gauges (14) must make contact across the total surface of the thrust pieces (13).	AR42.10-W-0190-01H
		Clearance (A) on front axle	*BE42.10-N-1002-08A
		Clearance (A) on rear axle	*BE42.10-N-1002-09A
	Install
7	Remove box wrench and coat protective cap with grease		AR42.10-W-0190-01H
			*BR00.45-Z-1021-06A
8	Install retaining bracket for brake pads		AR42.10-W-0170-04H
9	Mount wheel		AR40.10-W-1100A
10	Check function and effectiveness of service brake

Test values for front brake disks

Number	Designation		Model 374 with disk brakeSN7000	Model 375.1, 970, 972, 974, 975, 976 with disk brake SB6000, SN6000	Model 375.3/4, 930, 932, 933, 934, 944, 950, 952, 953, 954, 957 with disk brake SB7000, SN7000


BE42.10-N-1002-08A	Clearance of disc brake between thrust piece and brake pad carrier plate	mm	0.6...1.1	0.6...1.0	0.6...1.1

Test values for front brake disks

Number	Designation		Model 940, 942, 943,944 with disk brakeSN7000	Model 958 with disk brakeSN7000


BE42.10-N-1002-08A	Clearance of disc brake between thrust piece and brake pad carrier plate	mm	0.6...1.1	0.6...1.1

Test values for rear brake disks

Number	Designation		Models 374, 940, 942, 943, 944 with SN7000	Model 375.1, 970, 972, 974, 975, 976 with SB6000, SN6000	Model 375.3/4, 930, 932, 933, 934, 958 with SN7000


BE42.10-N-1002-09A	Clearance of disc brake between thrust piece and brake pad carrier plate	mm	0.6...1.1	0.6...1.0	0.6...1.1

Test values for rear brake disks

Number	Designation		Models 950, 952, 953, 954, 957 with SB7000, SN7000


BE42.10-N-1002-09A	Clearance of disc brake between thrust piece and brake pad carrier plate	mm	0.6...1.1

Repair materials

Number	Designation	Order number
BR00.45-Z-1021-06A	Installation grease (white) part number: II 14525	Knorr-Bremse AG Moosacher Str. 80 80809 München Germany Tel. +49-89-3547-0 Fax +49-89-3547-2767 www.knorr-bremse.de