2582396 - F10 EXCESSIVE BRAKE PEDAL FREE PLAY

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Results of the tests
1BRAKE PEDAL SOFTNESS CHECKAll OKProblems metOperation
Check that the brake pedal is not softCheck the brake fluid level warning lightCheck that there are no fluid leaks from: connectors, pipes, hoses, brake adjuster, reservoir, wheel cylinders, master cylinderContinue to Step 2Pedal softBleed the air Op. 0010A65
Fluid missing from reservoir because of leakTighten the connectors or replace the part generating the leak, then top up to the medium level Op. 0010A64
Fluid missing, but leak not visibleRemove the brake servo one-way valve (see Op. 3330D20) and check for leaks using a tube brush. Replace the brake servo/pump assembly Top up to medium level
1.9 DIESELCheck that the brake pedal is not softCheck the brake fluid level warning lightCheck that there are no fluid leaks from: connectors, pipes, hoses, brake adjuster, reservoir, wheel cylinders, master cylinderContinue to Step 2Pedal softBleed the air Op. 0010A66
Fluid missing from reservoir because of leakTighten the connectors or replace the part generating the leak, then top up to the medium level Op. 0010A64
Fluid missing, but leak not visibleRemove the brake servo one-way valve (see Op. 3330D20) and check for leaks using a tube brush Replace the brake servo/pump assembly Top up to medium level
2CHECK BRAKE PEDALAll OKProblems metOperation
Check that the brake pedal does not have two pressure stages and that it returns promptlyContinue to Step 3The pedal jumps: one chamber is not holding pressureReplace the brake servo/pump assembly Op.   3330D02 
The pedal returns after a delay: master cylinder fault.Replace the brake servo/pump assembly Op.   3330D02 
The pedal returns after a delay: front cylinder/caliper fault.Replace the front caliper Op.   3310A30 
3CHECK ON EFFICIENCY OF HANDBRAKE SELF-ADJUSTERAll OKProblems metOperation
Check the efficiency of the handbrake self-adjuster, by pulling the handbrakeContinue to Step 4Device faultyChange the device
4BRAKE PEDAL SOFTNESS CHECKAll OKProblems metOperation
Check whether the pedal becomes too soft after several braking actions (Vapour loop)Continue to Step 5The pedal becomes softReplace the brake fluid with one of a higher specification Op.   0010T62 
1.9 DIESELCheck whether the pedal becomes too soft after several braking actions (Vapour loop)Continue to Step 5The pedal becomes softReplace the brake fluid with one of a higher specification Op.   0010T62 
5CHECK ON HOLE ON BRAKE FLUID RESERVOIRAll OKProblems metOperation
Check that the hole in the brake fluid reservoir is not blockedContinue to Step 6Hole blockedClean reservoir hole
6CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Test the vehicle before delivery to the customer, to check that the fault is no longer present
The test is essential, as the braking system involves a safety feature of the car
Fault persistsSearch for the fault starting from another symptom'