Pinpoint Test A: Pedal Goes Down Fast - Ford Transit 2002 Owner's Manual

* Malfunctioning vacuum pump
(diesel).
* Disconnected or damaged brake
booster vacuum pipe.
* Brake booster.
Brake noise * Worn or damaged brake shoes or
brake pads.
* Brake booster.
Slow or * Brake booster.
incomplete * Seized brake pedal pivot.
brake pedal
return
Pinpoint Tests
PINPOINT TEST A : PEDAL GOES DOWN FAST
TEST
CONDITIONS
A1: PRESSURIZE THE SYSTEM
Pump the foot brake rapidly five times.
1
Does the brake pedal height build up and then hold?
Yes
CHECK parking brake adjustment and ADJUST as necessary.
REFER to:
Actuation, General Procedures).
If the condition still exists. BLEED the brake system.
REFER to:
Information, General Procedures) /
Brake System Pressure Bleeding
Information, General Procedures).
TEST the system for normal operation.
No
GO to
A2: CHECK FOR BRAKE SYSTEM LEAKS
Check for external brake and clutch system leaks. Refer to Brake Master
1
Cylinder Component Test in this procedure.
Are any leaks present?
Yes
REPAIR as necessary. ADD fluid and BLEED the brake system.
REFER to:
Information, General Procedures) /
Brake System Pressure Bleeding
Information, General Procedures).
TEST the system for normal operation.
No
GO to
A3: PERFORM A BRAKE MASTER CYLINDER BYPASS CONDITION TEST
Carry out a Brake Master Cylinder Bypass Condition Test. Refer to the
1
Brake Master Cylinder Component Test in this procedure.
Was a concern found?
Yes
DETAILS/RESULTS/ACTIONS
Parking Brake Cable Adjustment
Brake System Bleeding
A2.
Brake System Bleeding
A3.
http://vnx.su
Removal and Installation).
* INSTALL a new brake vacuum pump.
REFER to: Brake Vacuum Pump
07 Power Brake Actuation, Removal
and Installation).
* CONNECT or INSTALL a new brake
booster vacuum pipe as necessary.
* GO to Pinpoint Test
* INSTALL new brake shoes or brake
pads.
REFER to: Brake Shoes
Brake, Removal and Installation) /
Brake Pads (206-04 Rear Disc Brake,
Removal and Installation).
* GO to Pinpoint Test
* GO to Pinpoint Test
(206-05 Parking Brake and
(206-00 Brake System - General
(206-00 Brake System - General
(206-00 Brake System - General
(206-00 Brake System - General
(206-
D.
(206- 02 Drum
E.
F.