Master cylinders manufactured by Ate, Girling and Bendix use 2 or 3-chamber reservoirs, a level sensor taste is built into each chamber.
A warning light is activated when brake fluid level is low or when pressure differential in the middle of two brake circuits is caused by loss of fluid in whether circuit.
Laptop Sleeve
Floating type front disc brake calipers are used on the 190, 420 and 560 series; Not floating type calipers on other models with parking brakes are cable-actuated in rear brake rotor calipers.
All models have brake pad wear indicators and differential pressure warning indicator.
Wear sensors for 420 and 560 series operates on inner pads only.
The Anti-Lock Brake ideas is accepted on 420Sel, 300 and 560 series (optional on 190 series).
On diesel models, a vacuum pump is incorporated to provide a vacuum to the power brake unit.
Adjustments Pedal Height & Free Play
Pedal height measured from pedal pad to pedal stop should be 150 m.m.
to adjust loosen lock nuts and turn stop light switch until precise pedal height is obtained tighten lock nuts; pedal free play should be 5-15 m.m..
Brake Light Switch
The stoplight switch is settled under dash, above brake pedal loosen lock nuts and adjust switch so that taste button extends 6-8 m.m. Then tighten lock nuts.
Parking Brake
1. Take off only one wheel lug bolt at each rear wheel, raise vehicle.
2. Rotate wheel until lug bolt hole is positioned over parking brake adjuster, roughly 45 degrees forward for diagonal swing axle and 90 degrees forward for diagonal swing axle with starting torque compensation.
Adjusting Parking Brake Mechanism
Parking brake must be adjusted if brake pedal can 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 straight through lug bolt whole hand turn adjuster until rear wheel cannot be turned, back off the adjuster until wheel can be turned without wheel dragging.
Testing The Brake Warning Light
1. Dual warning light is mounted on dash, turn ignition on and the light should glow when parking brake lever is pulled to one notch and go off when brake lever is fully released.
2. To check circuit warning sensor, turn ignition on, issue the parking brake and ensure light is off,
Open bleeder screw on one wheel and depress brake pedal and the light should 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 in the master cylinder must be reset.
Removal & facility Of Disc Brake Pads
Removal 420Sel, 300 & 560 Series
1. Raise car and Take off wheels, Take off upper hex head caliper bolt.
2. Pull clip of the brake pad wear sensor out of plug by chance cap on plug, rotate caliper downward and Take off pads from carrier.
3. accepted front disc brake pad assembly thickness along with lining backing plate is 17.5 m.m. accepted rear pad assembly thickness is 15.5 m.m..
4. Front backing plate thickness is 4.5 m.m. Rear backing plate thickness is 5mm Minimum pad thickness is 2 m.m..
Mercedes Benz particular Piston Disc Brake Caliper cleaning.
1. Using brass cylinder brush clean disc pad guide face in caliper, siphon fluid from master cylinder to forestall overflowing press piston to lowest of bore.
2. Install disc pads and wear sensor wires, reverse extraction course to faultless facility and check that dash light goes out.
Removal All Other Mercedes Benz Models
1. Raise car and Take off wheels, Take off 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 Take off the locking pins and retaining pins then the cross spring retainers.
3. Take off disc pads from caliper, if not reusable note health and location of pads for re installation.
4. accepted front disc brake pad assembly thickness along with lining backing plate is 17.5 m.m. accepted rear pad assembly thickness is 15 m.m..
5. Front backing plate thickness is 4.5 m.m. Rear backing plate thickness is 5 m.m. Minimum pad thickness is 2 m.m..
1. Using cylinder brush clean disc pad guide face in caliper, siphon fluid from master cylinder stockroom to forestall overflowing, press pistons to bottom.
2. Mercedes Benz Disc Brake Pads.
3. Install cover plate retaining pin locking keys and wear sensor wires, check that dash light goes out, and the reset pin at master cylinder.
Disc Brake Caliper Removal
1. Raise and retain car Take off the wheel, open bleeder screw on caliper assembly and pump out fluid, disconnect and plug brake lines at caliper assembly.
2. Take off caliper bolts, Take off caliper assembly from vehicle.
Installation To Install reverse extraction procedure, tighten all nuts and bolts and then bleed hydraulic ideas and check that the dash light goes out, reset pin in master cylinder if necessary.
Disc Brake Rotor extraction (Front)
1. Take off caliper assembly and hub grease cap, Take off taste spring for radio shielding, loosen clamping nut socket screw on wheel spindle.
2. Take off clamping nut and washer, Take off wheel hub and rotor assembly, Take off bolts securing hub to rotor, Take off rotor.
Cleaning & Inspection
1. Clean disc and check for cracks, scoring or inordinate wear, replace as necessary.
2. Before installing stock replacement disc, use solvent to Take off nitrocellulose corrosion preventive paint from rotor surface.
Installation To Install reverse removal, tighten all bolts and fittings evenly, bleed hydraulic ideas if necessary, lubricate and adjust wheel bearings, see accepted record in suspension section.
Removal rear brakes
1. Take off rear wheel and tire and disconnect and plug brake lines, Take off caliper assembly.
2. Using rear axle shaft Assembly Tool 116 589 24 61 00, pull rotor out from axle shaft flange.
1. To Install reverse procedure, coat the axle splines with high climatic characteristic lubricant grease wheel bearings and Install seal if necessary.
2. Tighten all bolts and fittings evenly and bleed hydraulic system.
Rear Axle Seal Removal
1. Take off rear wheel and tire and issue locking plates, Take off mount bolts and caliper, wire caliper out of the way.
2. On vehicles with starting torque compensation, disconnect brake hose owner and hang caliper assembly with wire.
3. Loosen and Take off 8 m.m. Bolt or 12 m.m. Bolt with spacing sleeve and clamping disc at town of rear brake rotor.
4. Using rear axle shaft Assembly Tool, Take off rotor from rear axle shaft flange and pry rear axle seal from rotor at inner wheel bearing and discard.
If the brake rotor is difficult to free from the axle flange attack the outer circumference lightly with a plastic hammer and ensure parking brake is released.
Installation
1. Coat inside of new axle seal lip and wheel bearings with grease, Install bearings and seal into rear brake disc.
2. Coat axle splines with heat unyielding lubricant and Install disc, to faultless facility reverse extraction procedure.
Mercedes Benz master cylinder removal
1. Drain master cylinder fluid and disconnect and plug brake lines, disconnect electrical wires.
2. Take off the bolts securing master cylinder to power brake unit and Take off master cylinder.
Installation
1. Reverse procedure; all the time replace rubber "O" ring seal in the middle of master cylinder and power unit.
2. Bleed hydraulic ideas and check faultless ideas for fluid leaks, check that dash light is out and reset pin in cylinder.
Parking Brake Linings
1. Take off wheel and tire and disconnect hydraulic line, Take off caliper and disc and turn the rear axle flange until the threaded hole faces down, compress spring with spring and turn 90 degrees.
2. Take off all retainers and hold-down springs, isolate lower return spring opposite adjuster and pull brake shoes apart sufficient to Take off over rear axle shaft flange, isolate upper return spring and Take off adjuster.
Cleaning & Inspection Use brake vacuum cleaner to clear asbestos dust from assembly and check health of linings and components.
Disc brake rotor inside diameter is 160 m.m. Parking brake lining width 25 m.m..
Installation
1. To Install reverse procedure, lubricate all adjuster components and sliding surfaces of backing plate with silicone brake grease.
2. Return adjuster to position and Install on shoes with adjusting wheel facing 45 degrees forward diagonal swing axle or 90 degrees forward diagonal swing axle with starting torque compensation.
3. Attach hold down springs and retainers and return springs, Install disc and adjust parking brake.
Single Diaphragm & Piston Type Vacuum Pump
Removal Diesel Only While holding lock nuts loosen vacuum lines from pump, isolate hex head mount screws from crankcase and Take off vacuum pump and gasket.
Piston type vacuum pump screw connector is in case,granted with oil holding valve, when pump is stopped and vacuum is available, valve prevents motor oil from entering power brake unit.
Installation Install vacuum pump with new gasket to crankcase, the new gasket thickness is 2 m.m. Join together vacuum lines and test for allowable operation.
Double Diaphragm Vacuum Pump (Diesel Only)
1. Loosen upper radiator hose and drain some coolant and Take off the fan radiator shell and power steering pump belt.
2. Loosen vacuum lines from pump; Take off hex head mount screws from crankcase Take off vacuum pump with toothed intermediate sleeve and gasket.
Installation
1. Clean sealing surfaces and Install pump with new gasket to crankcase and ensure intermediate sleeve and pump locating pins are properly seated in crankcase.
2. Join together vacuum lines to pump, Install belt radiator shell, fan and hose, check pump for allowable operation.
Overhaul Front Disc Brake Calipers
Disassembly 420Sel, 300 & 560 Series
Remove caliper from car and place piece of wood in front of piston, gently apply compressed air into fluid inlet Take off piston and Take off dust boot from piston and piston seal from caliper bore.
Cleaning & Inspection
1. Wash parts in alcohol or brake fluid and air dry, gawk caliper bore and piston for scoring scratches or rust, accepted front brake caliper bore inside diameter is 60 m.m..
2. Replace dust boot and piston seal when disassembling caliper, Take off small rust deposits in bore with fine cloth.
When installing new caliper and check that calipers on same axle have pistons of same diameter, only identical calipers should be installed on front axle.
Reassembly Coat piston and caliper bore with Ate brake cylinder paste, Install piston seal into caliper bore and Install piston and dust boot.
Disassembly 190, 300E, 300Sdl & 420Sel this course also applies to all rear calipers.
1. Take off caliper from car and Take off disc pads from caliper and Take off dust boot.
2. Hold one piston in place using piston Resetting Pliers, gently apply compressed air to fluid inlet to Take off opposite piston.
3. Take off piston seal from groove of cylinder bore and Take off remaining piston and seal in same manner. Do Not isolate caliper halves, replace only as an assembly, calipers installed on front axle must be from same manufacturer.
Calipers on rear axle may be separate only if same brand replacement part is unavailable.
Cleaning & Inspection
1. Check cylinder bores of caliper for wear or damage, small rust deposits may be removed from caliper bores with cloth.
2. Caution: Do Not clean chrome-plated surfaces of pistons with polishing or emery cloth damage to face may result.
Remove deposits with soft brass wire brush or rough cleaning cloth, replace piston if chrome face is damaged.
2. Heavy rust deposits or badly scored bore will need replacement of the caliper rust deposits in front of piston seal groove may be removed with fine emery cloth.
3. accepted front brake caliper bore inside diameter is 60 m.m. accepted rear caliper bore I.D. Teves is 38 m.m. And rear caliper bore I.D Bendix Girling is 42 m.m..
Reassembly
1. Coat piston and caliper bore with Ate brake cylinder paste, Install piston seal into the caliper bore and then Install piston.
2. With caliper installed on the diagonal swing axle elevation on the piston faces upward.
On diagonal swing axle with starting torque compensation, elevation on piston must be at lowest and scheme at least 10 m.m. Above shield, use Dot 4 or higher rated brake fluid while the overhaul.
2. Check position of piston in caliper with Piston Gauge for front or for rear.
3. Adjust with Piston Rotating forceps and Install dust boot, Install heat shield into piston with recess in shield fitting into elevation of the piston.
Rear Disc Brake Caliper
Overhaul course is the same as front caliper of 300E, 300Sdl and 420Sel models.
Master Cylinder Caution:
Bendix master cylinder painted Blue cannot be overhauled and replace as an assembly only.
Disassembly Tandem & Stepped Tandem
1.On tandem master cylinder Take off the stockroom and push piston in
remove stop screw; Take off the push rod piston assembly and O ring.
2.Remove the lock ring from housing and Take off the floating circuit piston, and stop washer with two vacuum seals and intermediate ring.
3.Tap lightly on housing with plastic mallet to Take off the floating circuit piston assembly.
On Teves stockroom only Take off cap end covers and strainer and splash guard, O rings and taste the inserts.
On Bendix models, Take off strainer from cover, Do Not Take off the taste inserts.
Always use Dot 4 or higher brake fluid while overhaul.
.
Cleaning & Inspection
1.Clean all parts with alcohol or brake fluid and flush residue out of housing, check bore in housing and the piston for score marks and rust.
2. Small rust spots in housing may be removed with emery cloth scored or badly rusted parts cannot be repaired and need replacement of faultless master cylinder.
3.On tandem models with accepted master cylinder inside diameter is 23.81 m.m. Maximum bore wear limit is 23.92 m.m..
4.On the stepped tandem models, accepted master cylinder I.D. For push rod circuit is 23.81m.m. And I.D. For floating circuit is 19.05 m.m..
5. Maximum master cylinder bore I.D. Is 23.92 m.m. For push rod circuit and 19.16 m.m. For floating circuit.
Reassembly
1. To assemble reverse disassembly procedure, coat the bore of master cylinder with brake fluid.
2. Install new floating circuit piston assembly and push in piston assembly and Install lock ring.
3. Install the new push rod piston assembly and screw in stopper screw using new copper washer for Gray iron master cylinder or new aluminum washer for light alloy master cylinder.
Replace O ring to ensure allowable vacuum seal at power brake unit and bleed hydraulic system, check that the dash light is out.
Differential pressure warning indicator reset pin settled at the front end of master cylinder Must be reset once and indicator light in dash panel has been triggered.
Power Brake Unit
Manufacturer does not propose disassembly of this unit, if question is found in power brake unit faultless assembly must be replaced, Do Not disassemble power brake unit, decree whether source of question is in power brake unit or the check valve.
Brake principles assistance Mercedes BenzTags : 3G Tablet PayDay loans blu ray disc players Unlocked cell phones
0 comments:
Post a Comment