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Home >> Smart >> 2016 >> Fortwo Prime, Standard Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Hydraulic & Mechanical Systems - 451 Chassis >> Maintenance >> Check wet boiling point of brake fluid - AP42.00-P-4298MCC

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

MODEL 451.3/4 

Fig 1: Checking Wet Boiling Point Of Brake Fluid
G10977954Courtesy of MERCEDES-BENZ USA
DANGER Risk of poisoning  from swallowing brake fluid. Risk of injury  from skin and eye contact with brake fluid 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 Notes on repairs to brake system   AH42.00-P-0003-01A
NOTES Brake fluid notes   AH42.50-P-0001-01A
INSPECT Check     
1 Open brake fluid reservoir    
2 Fold up folding cover (1) on brake fluid measuring device (4)    
3 Using pipette (2) coat a few droplets of brake fluid onto the prism surface (3) and carefully fold down the folding cover (1)    
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) IMPORTANT Limit of wet boiling point: At DOT4: > 155 °C (279 °F) At DOT4+: > 168 °C (302 °F)
If the wet boiling point is below the limit:
↓
Replace the brake fluid subject to a separate repair order.
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