125000517 - F10 EXCESSIVE BRAKE PEDAL FREE PLAY
When the brake pedal is depressed, its travel is longer than the normal operating travel.| Results of the tests | ||||||
| 1 | BRAKE PEDAL SOFTNESS CHECK | All OK | Problems met | Operation | ||
|---|---|---|---|---|---|---|
| Check that the brake pedal is not softCheck brake fluid level Op. Op. 0010T64 BRAKE AND OR CLUTCH FLUID CHECK LEVEL AND TOP UP AS NECESSARY Check that there are no fluid leaks from: connectors, pipes, hoses, brake adjuster, reservoir, wheel cylinders, master cylinder
| Continue to Step 2 | Pedal soft | Bleed the air from the system Op. Op. 0010T65 HYDRAULIC BRAKE SYSTEM BLEED AIR | |||
| Fluid missing from reservoir because of leak | Tighten the connectors or replace the part generating the leak, then top up to the medium level Op. Op. 0010T64 BRAKE AND OR CLUTCH FLUID CHECK LEVEL AND TOP UP AS NECESSARY | |||||
| Fluid missing, but leak not visible | Continue to Step 2 | |||||
| Front hoses dilate | Replace hoses | |||||
| Hole blocked | Clean hole | |||||
| 2 | CHECK ON BRAKE PEDAL | All OK | Problems met | Operation | ||
| Check that the brake pedal does not have two pressure stages and that it returns promptly | Continue to Step 3 | The pedal jumps: one chamber is not holding pressure | Replace the brake servo/pump assembly Op. Op. 3330D02 BRAKE SERVO/BRAKE PUMP ASSEMBLY - R R | |||
| The pedal returns after a delay: master cylinder fault. | Replace pump/ servo brake assembly Op. Op. 3330D02 BRAKE SERVO/BRAKE PUMP ASSEMBLY - R R | |||||
| The pedal returns after a delay: front caliper fault. | Replace calipers Op. Op. 3310A32 FRONT BRAKE CALLIPERS BOTH R R | |||||
| The pedal returns after a delay: rear caliper fault. | Replace calipers Op. Op. 3310B34 REAR BRAKE CALIPERS - R + R - INCLUDES HANDBRAKE ADJUSTMENT AND BLEEDING | |||||
| 3 | CHECK ON EFFICIENCY OF HANDBRAKE SELF-ADJUSTER | All OK | Problems met | Operation | ||
| Check the efficiency of the handbrake self-adjuster, by pulling the handbrake | Continue to Step 4 | Device faulty | Change the device | |||
| 4 | BRAKE PEDAL SOFTNESS CHECK | All OK | Problems met | Operation | ||
| Check whether the pedal becomes too soft after several braking actions (Vapour lock) | Continue to Step 5 | The pedal becomes soft | Change the brake/clutch fluid Op. Op. 0010T62 POWER STEERING FLUID CHECK LEVEL AND TOP UP IF NECESSARY | |||
| 5 | Continue as instructed by the tester | All OK | Problems met | Operation | ||
Test the vehicle before delivery to the customer, checking that the fault is no longer present
| End of diagnosis | . | ||||
