Check wet boiling point of brake fluid - AP42.00-P-4298MCC

MODEL 451.3/4

Fig 1: Identifying Brake Fluid Meter Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Checking
	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
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
1	Open brake fluid reservoir
2	Fold up folding cover (1) on brake fluid measuring device (4)	Brake fluid meter	*452589002100
3	Using pipette (2) coat a few droplets of brake fluid onto the prism surface (3) and carefully fold down the folding cover (1)	Pipette	*452589002101
4	Direct the brake fluid measuring device (4) towards the bright light source and read off the wet boiling point of the brake fluid through the eyepiece (5)	Limit of wet boiling point at DOT4: 155°C (279°F) at DOT4+: 168°C (302°F) If necessary, subject to separate repair order: ↓
4		Renew brake fluid.	AP42.00-P-4280MCC
5	Clean brake fluid measuring device (4) with water and dry
6	Dispose of pipette (2)
7	Seal brake fluid reservoir

Fig 2: Identifying Pipette (452 589 00 21 01)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Brake Fluid Meter (452 589 00 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.