Oil pump FORD FIESTA 2007 Service Manual

Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
307-01 49 Transmission (AW81-40) 307-01 -49
DIAGNOSIS AND TESTING

Test Results
Higher than specification in 'Dl (DRIVE)
Higher than specification in
'R' (REVERSE)
Lower than specification in 'D' (DRIVE)
Lower than specification in
'R' (REVERSE)
Possible Source
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Forward clutch failure (slipping).
One-way clutch No.2 failure.
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Reverse clutch failure (slipping).
First and reverse brake failure (slipping).
Drive hydraulic circuit failure.
Forward clutch failure.
Pressure control solenoid inoperative.
Pressure regulator valve sticking.
Worn oil pump.
Oil strainer blocked.
Fluid leak from each clutch hydraulic circuit.
( Time Lag Test 1. Using a suitable stop watch, measure the time
lag three times and calculate the average time.
Time lag is the time between moving the selector Record the
time lag and refer to the time lag
lever from
IN' (NEUTRAL) to ID' (DRIVE) or IN' chart.
(NEUTRAL) to 'R' (REVERSE). With the parking 2. If the time lag is not within specification, refer
brake applied the vehicle must not move if the
to the time lag diagnosis chart.
selector lever is moved from 'N' (NEUTRAL) to
ID'
(DRIVE) or 'N' (NEUTRAL) to 'R' (REVERSE). Time Lag Chart
Drive is engaged when the vehicle starts to rise.
A WARN1NG:Apply the parking brake firmly IN' (NEUTRAL) to ID' while carrying out each test. 1 (DRIVE)
(NEUTRAL) and run the engine at 1000 rpm
for approximately
1 minute to allow the
torque converter to cool.
less than 1.0 seconds
CAUTI0N:After testing each of the
following ranges
'D' (DRIVE) and 'R'
Range
I Lower than specification in IN' (NEUTRAL) to 'Dl I Pressure control solenoid inoperative.
Ti me
(REVERSE), move the selector lever to 'N'
'N' (NEUTRAL) to 'R'
(REVERSE)
Time Lag Diagnosis Chart
(DRIVE) less
than 1.2 seconds
Test Results
Pressure regulator valve sticking.
Forward clutch failure (slipping).
Possible Source
I Timing solenoid failure.
I I Drive hydraulic circuit failure. I
2006.0 Fiesta IZIZOO~ G371498en
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Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
REMOVAL AND INSTALLATION
39. Tilt the engine and transaxle assembly Check
the installation depth of the torque
forwards and insert a suitable wooden converter.
/ block. 1. Lay
a straight edge on the transaxle flange.
2. Check the installation depth between the
transaxle flange and the torque converter
centering spigot.
40. Remove the transaxle right-hand retaining
bolts.
41m ~CAUTION:M~~~ sure the torque
converter remains in the transaxle.
3m ~CAUTION:T~~ torque converter must
Using the transmission jack and remove the remain
at the correct installation depth
transaxle. during the entire installation.
N0TE:Secure the transmission with the securing
Installation strap.
N0TE:Make sure that the two locating dowels are
ACAUTION:T~~ torque converter must installed.
remain at the correct installation depth
during the entire installation.
N0TE:Before installing the bolts in the
transmission, the torque converter studs must be
aligned with the holes in the drive plate.
Install the torque converter.
Lubricate the torque converter centering
spigot with grease.
*' ACAUTION:T~~ torque converter hub must
engage fully with the oil pump drive gear.
2006.0 Fiesta 1212006 G371506en
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