Brake System Service Mercedes Benz

Brake System Service Mercedes Benz

Master cylinders manufactured by ATE, Girling and Bendix utilize 2 or 3-chamber reservoirs, a stage sensor contact is constructed into each chamber.

A warning light is activated when brake fluid stage is low or when pressure differential between two brake circuits is caused by lack of fluid in both circuit.

Floating type front disc brake calipers are used on the 190, 420 and 560 collection; Not floating type calipers on different fashions with parking brakes are cable-actuated in rear brake rotor calipers.

All fashions have brake pad wear indicators and differential pressure warning indicator.

Wear sensors for 420 and 560 sequence operates on internal pads only.

The Anti-Lock Brake System is standard on 420SEL, 300 and 560 collection (optional on one hundred ninety sequence).
On diesel fashions, a vacuum pump is incorporated to supply a vacuum to the ability brake unit.

ADJUSTMENTS PEDAL HEIGHT & FREE PLAY

Pedal height measured from pedal pad to pedal stop should be one hundred fifty m.m.
to adjust loosen lock nuts and turn cease light swap till appropriate pedal height is obtained tighten lock nuts; pedal free play should be 5-15 m.m..

BRAKE LIGHT SWITCH
The ceaselight swap is positioned beneath dash, above brake pedal loosen lock nuts and adjust switch in order that contact button extends 6-8 m.m. then tighten lock nuts.

PARKING BRAKE
1. Remove just one wheel lug bolt at every rear wheel, raise vehicle.

2. Rotate wheel until lug bolt gap is positioned over parking brake adjuster, approximately forty five degrees forward for diagonal swing axle and ninety degrees forward for diagonal swing axle with starting torque compensation.

ADJUSTING PARKING BRAKE MECHANISM
Parking brake have to be adjusted if brake pedal might be depressed by more than 2 steps of 6 without any braking effect, do not alter adjusting screw on parking brake intermediate lever; these screws are for balancing cable lengths only.

3. Using screwdriver inserted by way of lug bolt complete hand flip adjuster till rear wheel cannot be turned, back off the adjuster until wheel can be turned with out wheel dragging.

TESTING THE BRAKE WARNING LIGHT
1. Twin warning light is mounted on dash, turn ignition on and the light ought to glow when parking brake lever is pulled to at least one notch and go off when brake lever is totally released.

2. To check circuit warning sensor, turn ignition on, launch the parking brake and ensure light is off,
Open bleeder screw on one wheel and depress brake pedal and the light ought to light up.

3. Close bleeder screw, replenish the brake fluid and bleed system, check that light goes out after testing and if not; differential pressure pin within the master cylinder must be reset.

REMOVAL & INSTALLATION OF DISC BRAKE PADS

Removal 420SEL, 300 & 560 Series

1. Elevate vehicle and remove wheels, remove higher hex head caliper bolt.

2. Pull clip of the brake pad wear sensor out of plug by opening cap on plug, rotate caliper downward and remove pads from carrier.

3. Customary front disc brake pad meeting thickness including lining backing plate is 17.5 m.m. Standard rear pad assembly thickness is 15.5 m.m..

4. Entrance backing plate thickness is 4.5 m.m. Rear backing plate thickness is 5mm Minimal pad thickness is 2 m.m..

mercedes service Benz Single Piston Disc Brake Caliper cleaning.

1. Using brass cylinder brush clear disc pad guide surface in caliper, siphon fluid from master cylinder to forestall overflowing press piston to bottom of bore.

2. Install disc pads and wear sensor wires, reverse removal procedure to complete set up and check that dash light goes out.

Removal All Different Mercedes Benz Fashions

1. Increase vehicle and remove wheels, remove cover plate from caliper and disconnect wear indicator wires.

2. Drive out retaining pins toward inside of vehicle, on Bendix brakes retaining pins have locking pins, then remove the locking pins and retaining pins then the cross spring retainers.

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