Test brake system with pressure tester for leaks

AR42.10-T-0015U

Test brake system with pressure tester for leaks

17.12.09

11.3.09

Remove bleeder valve (1) from brake caliper (2), added

Step 1

Install pressure tester with test connection to brake caliper (2) added

Step 2



Checking

 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

1

Remove bleed valve (1) from brake caliper (2) added

2

Install pressure tester (2) with test connection to brake caliper

 Pressure testers for hydraulic fluid systems must not be used for systems with brake fluid, otherwise brake fluid may be mixed with mineral oil which may cause the brakes to fail.



Brake fluid notes

All models

AH42.50-P-0001-01A

3

Set ALB controller to full load position

 This ensures full brake pressure is achieved.



High-pressure check

4

Press down brake pedal using brake pedal jack

 Press brake pedal until pressure gauge displays test pressure. The pressure must not drop more than 10 % below the set value for the duration of the test.
If a higher pressure drop is detected the leak point must be sought and defective parts replaced.

*BE42.50-N-1002-01D

 If brake fluid loss is not visible externally, check seal between master brake cylinder and diaphragm cylinder.



*000589183100



Notes on repairs to brake system

All models

AH42.00-P-0003-01A



Low-pressure testing

5

Press down brake pedal using brake pedal jack

 Press brake pedal until pressure gauge displays test pressure. The line pressure must not drop for the duration of the test.
If a pressure drop is detected, find the leakage point and replace the damaged parts.

*BE42.50-N-1001-01D

 If brake fluid loss is not visible externally, check seal between master brake cylinder and diaphragm cylinder.



*000589183100



Notes on repairs to brake system

All models

AH42.00-P-0003-01A

6

Detach pressure tester (2) with test connection from brake caliper

7

Install bleed valve (1) in brake caliper (2)

8

Carry out steps 1 to 7 for leak test of other brake calipers analogously

9

Detach brake pedal jack



*000589183100

10

Bleed brake system

AR42.10-T-0010U

11

Check brake system for leaks and proper function

Number

Designation

Model
436.330

BE42.50-N-1001-01D

Low-pressure check of brake system

Test pressure

bar

3 to 5

Test duration

min

5

Pressure drop

%

-

BE42.50-N-1002-01D

High pressure test on brake system

Test pressure

bar

80 to 100

Test duration

min

10

Pressure drop

%

10