Checking and adjusting axle load-dependent brake (ALB)

AR42.80-D-1600D

23.11.09

MODEL 904, 905
with CODE (J61) Hydraulic brake test connection
except CODE (BB0) Antilock brake system (ABS)

D42.80-0052-05

1 Test connection, brake pressure uncontrolled

2 Front axle brake caliper

3 ALB controller

4 Test connection, brake pressure controlled

5 Rear axle brake caliper

Shown on model 904

D42.80-0053-01

D42.80-0005-01

2 Master brake cylinder test connection

ALB controller test connection

	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
	Brake fluid notes	All models	AH42.50-P-0001-01A
	Notes on repairs to brake system	All models	AH42.00-P-0003-01A
		The ALB controllers cannot be repaired. Always replace controller if not functioning correctly or if defective.
	Notes on adjusting axle load-dependent brake		AH42.80-N-0001-01A
1	Check actuation of axle load-dependent brake	If necessary, replace bearing bushings
		Model 904	AR42.80-D-1603-02A
		Model 905	AR42.80-D-1603-02B
			*BE42.80-N-1002-01A
		Long-term grease	*BR00.45-Z-1001-06A
2	Check ALB controller operating lever		AR42.80-D-1603-04A
3	Connect pressure gauge at master brake cylinder test connection (2)
4	Connect pressure gauge to test connection of ALB controller.
5	Checking brake pressure of ALB controller		AR42.80-D-1600-01A
			*000589183100
		Inlet pressure	*BE42.80-N-1001-01A
6	Adjust ALB controller		AR42.80-D-1603-01A
7	Disconnect pressure tester.
8	Check fluid level in reservoir and correct if necessary
			AP42.50-D-4210A
9	Check brake system for leaks

Test and adjustment values for ALB controller

Number	Designation			Model 690.612/613 904, 905 except code BB0


BE42.80-N-1001-01A	ALB controller pressure test	Inlet pressure	bar	100
		Maximum variation of outlet pressure between left and right	bar	-
BE42.80-N-1002-01A	ALB controller linkage	Maximum deflection play of actuator rod	mm	15
		See picture		AR42.80-D-1603-03A

000 589 18 31 00

385 589 05 21 00

Test balance

Brake pedal jack

Repair materials

Number	Designation	Order number
BR00.45-Z-1001-06A	Long-life grease	A 000 989 63 51 11