Pinpoint Test F: Slow Or Incomplete Brake Pedal Return - Ford Transit 2002 Owner's Manual

Is the vacuum reading 40.5kPa (12in - Hg)?
Yes
GO to
No
LOCATE and REPAIR the source of low vacuum. TEST the system for
normal operation.
E2: INSPECT SYSTEM
Ignition switch in position 0.
1
Reconnect the vacuum hose.
2
Inspect the brake booster, rubber grommet, and all vacuum plumbing for
3
cracks, holes, bad connections, or missing clamps.
Pump the brake pedal five times to exhaust the vacuum. Push down on
4
the brake pedal and hold.
Does the brake pedal move down when the engine is started?
Yes
Vacuum system is OK.
No
GO to
E3: CHECK POWER BRAKE BOOSTER CHECK VALVE
Check the brake booster check valve.
1
Is the power brake booster check valve OK?
Yes
CHECK the brake booster. Refer to Brake Booster Component Test in this
procedure. INSTALL a new brake booster as necessary. TEST the system
for normal operation.
No
INSTALL a new brake booster check valve. TEST the system for normal
operation.
PINPOINT TEST F : SLOW OR INCOMPLETE BRAKE PEDAL RETURN
TEST
CONDITIONS
F1: CHECK FOR BRAKE PEDAL RETURN
Run the engine at approximately 1200rpm whilst making several brake
1
applications.
Pull the brake pedal upwards with approximately 44.5 N (10 lbs) force.
2
Release the brake pedal and measure the distance to the floor panel and
3
note the reading.
Make a hard brake application.
4
Release the brake pedal and measure the distance to the floor panel and
5
note the reading.
Compare the measurements.
6
Did the brake pedal return to its original position?
Yes
VERIFY the customer concern.
No
GO to
F2: CHECK FOR BRAKE PEDAL BINDING
Check the brake pedal for free operation.
1
Did the brake pedal operate freely?
Yes
INSTALL a new brake booster.
REFER to:
Removal and Installation) /
Brake Booster - RHD FWD
Installation).
TEST the system for normal operation.
E2.
E3.
DETAILS/RESULTS/ACTIONS
F2.
Brake Booster - LHD FWD
(206-07 Power Brake Actuation, Removal and
http://vnx.su
(206-07 Power Brake Actuation,