Remove/install master brake cylinder · ar4210d0300a · Mercedes-Benz WIS

AR42.10-D-0300A

Remove/install master brake cylinder

18.11.09

MODEL 901, 902, 903, 904

MODEL 690.6

D42.10-0023-06

1 Cap

2 Reservoir

3 Master brake cylinder

4 O-ring

5 Nut

6 Brake line

7 Connector for
brake fluid level display

8 One-way clamp

9 Hydraulic hose

Modification notes

20.9.00

Value changed from 16 Nm to 14 Nm

Figure modified in BA42.10-N-1001-04A for model 901, 902, 903, 904

*BA42.10-N-1001-04A

 	Remove/install
Danger!	Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work	Before starting engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
Danger!	Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes.	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
	Brake fluid notes	All models	AH42.50-P-0001-01A
	Notes on repairs to brake system	All models	AH42.00-P-0003-01A
1	Remove reservoir (2)	 When reusing, clean the reservoir with spirit.	AR42.10-D-0301A
2	Remove brake lines (6)	 Seal ends of line using stop plugs.	*000589750300
			*BA42.10-N-1001-04A
3	Remove master brake cylinder (3)	Check brake booster for damage caused by leaky master brake cylinder.
		It is not possible to repair the master brake cylinder.
		 Installation: Replace sealing ring (4) and reservoir stop plug for reservoir (2).
			*BA42.10-N-1001-05A
4	Install in the reverse order
5	Bleed brake system		AR42.10-D-0010A
6	Check fluid level in reservoir, correct if necessary
	Hydraulic brake system - check fluid level, correct if necessary	Model 638 Model 901, 902, 903, 904, 690.6 MODEL 667, 668, 670 with ENGINE 602 MODEL 668, 670 with ENGINE 904	AP42.50-D-4210A
7	Check brake system for leaks

 Brake hoses, brake lines

Number	Designation			Model 690.6, 901, 902, 903, 904 without code BB0 (ABS/ABD)	Model 690.6, 901, 902, 903, 904 with code BB0 (ABS/ABD)


BA42.10-N-1001-04A	Brake line threaded connection	M101	Nm	14	14

 Master brake cylinder

Number	Designation		Model 690.6, 901, 902, 903, 904, 905,


BA42.10-N-1001-05A	Nut, master brake cylinder to brake unit	Nm	28

000 589 75 03 00

Box wrench bit

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