Ford Festiva. Manual — part 105

LINE PRESSURE TEST SPECIFICATIONS (ASPIRE)

LINE PRESSURE TEST SPECIFICATIONS (ALL EXCEPT ASPIRE)

LINE PRESSURE CUT-BACK TEST

1. Connect oil pressure gauges to line pressure and governor pressure ports. See

Fig. 6

. Position gauges so they can be seen from driver's

seat.

2. Connect a hand-held vacuum pump to vacuum modulator. See

Fig. 6

. Position vacuum pump so it can be operated from driver's seat.

With shift lever in "D", gradually increase engine RPM and observe pressure gauge readings. Record results.

3. With shift lever in "D", gradually increase engine RPM, and apply 8 in. Hg to vacuum modulator. When line pressure reading suddenly

decreases, observe the governor pressure gauge. Refer to

LINE PRESSURE CUT-BACK TEST SPECIFICATIONS

.

4. If governor pressure gauge readings are not within specifications, ensure rod in vacuum modulator is installed. If a rod is installed, rod

length may be incorrect or vacuum throttle valve is sticking. See

VACUUM THROTTLE VALVE DIAPHRAGM (MODULATOR)

under TESTING.

LINE PRESSURE CUT-BACK TEST SPECIFICATIONS

GOVERNOR PRESSURE TEST

1. Attach oil pressure gauge to governor pressure check port. See

Fig. 6

. Position gauge so that it may be seen from driver's seat. Shift

transaxle into "D" and road test vehicle.

2. Accelerate vehicle smoothly and record governor pressure readings at 20, 35 and 55 MPH. See

GOVERNOR PRESSURE

SPECIFICATIONS

. If pressure gauge readings are not within specifications, check for fluid leakage in line pressure hydraulic circuit

and/or governor pressure hydraulic circuit. Also check for a faulty governor.

GOVERNOR PRESSURE SPECIFICATIONS

REMOVAL & INSTALLATION

See the appropriate TRANSMISSION REMOVAL & INSTALLATION - A/T article in this section. Refer to the following menu:

TORQUE CONVERTER

The torque converter is a sealed unit and cannot be serviced. Check for cracked or worn ring in seal area. Measure bushing in converter boss.
If I.D. is larger than 2.090" (53.08 mm) on Aspire, 1.302" (33.075 mm) on Festiva and Tracer, replace torque converter. If metal particles are
found in ATF, replace torque converter. To clean torque converter, flush with solvent, drain and flush with ATF and drain ATF.

TRANSAXLE DISASSEMBLY

1. Remove torque converter. Attach transaxle to appropriate holding fixture. Remove park/neutral switch, kickdown solenoid and vacuum

modulator with rod. Remove oil dipstick and tube. Remove speedometer driven gear retaining bolt and lift out gear assembly. Remove
oil pump drive shaft and turbine shaft.

2. Remove oil pan. Remove valve body. DO NOT lose check ball and spring. Position transaxle with oil pump facing downward. With

flat-blade screwdriver inserted in wide slot between front clutch drum and sun shell, pry down on front clutch drum. Do this several
times as you rotate assembly 2 complete revolutions.

3. Using a feeler gauge, measure front clutch drum end play. See

Fig. 7

. Check clearance of small slot between front clutch drum tabs and

Application

psi (kg/cm

2

)

At Idle

"D"

46-54 (3.2-3.8)

"2"

150-166 (10.5-11.7)

"R"

76-95 (5.3-6.7)

At Stall Speed

"D"

141-157 (9.9-11.0)

"2"

150-166 (10.5-11.7)

"R"

251-262 (17.6-18.4)

Application

psi (kg/cm

2

)

At Idle

"D"

43-57 (3.0-4.0)

"2"

114-171 (8.0-12.0)

"R"

57-110 (4.0-7.0)

At Stall Speed

"D"

128-156 (9.0-11.0)

"2"

114-171 (8.0-12.0)

"R"

228-270 (16.0-19.0)

Vacuum Pump Reading

Governor Pressure psi (kg/cm

2

)

0 in. Hg (Atmosphere)

14-23 (.98-1.6)

8 in. Hg

6-14 (.42-.98)

Application

psi (kg/cm

2

)

Aspire & Festiva

20 MPH

13-21 (.9-1.5)

35 MPH

25-35 (1.8-2.5)

55 MPH

58-70 (4.0-4.8)

sun shell slots. Record measurement for reassembly reference. End play should be .020-.031" (.5-8 mm).

Fig. 7: Measuring Front Drum End Play

Courtesy of FORD MOTOR CO.

4. Remove oil pump. If oil pump is difficult to remove, tighten band adjusting stop bolt 106-133 INCH lbs. (12-15 N.m) and then remove

oil pump. Remove brake band adjustment stop bolt, lock nut, band strut and band. See

Fig. 8

. Store band partially closed with a piece

of wire.

5. Remove front clutch assembly. Remove rear clutch needle bearing and rear clutch drum. Remove front ring gear. Remove needle bearing

and rear clutch hub assembly. Remove thrust bearing and sun gear spacer from front planetary gear. Remove planetary gear carrier.

Fig. 8: Exploded View Of Transaxle Housing & Primary Components

Courtesy of FORD MOTOR CO.

6. Remove the sun gear, spacer and connecting sun shell. See

Fig. 8

. Using "C" clamp and socket, compress servo piston with and remove

snap ring. Release the "C" clamp and remove the servo piston. See

Fig. 2

. Remove governor cover and pull governor from transaxle

case. Remove transaxle case-to-torque converter housing bolts. Separate case halves.

7. Remove differential assembly. Remove oil pipes and parking pawl assembly. Remove drum hub assembly. Remove one-way clutch inner

race assembly. See

Fig. 8

. Remove rear planetary carrier with needle bearing and thrust washer. Before disassembling one-way clutch,

measure and record clearance between one-way clutch and low-reverse brake retaining plate. Clearance should .032-.041" (.8-1.05
mm).

8. Remove snap ring, one-way clutch and low-reverse brake retaining plate. Remove low-reverse brake plates. Compress low-reverse brake

piston with appropriate compressor. See

Fig. 9

. Remove snap ring with screwdriver and remove low-reverse brake hub and springs.

Apply air pressure to low-reverse oil passage to remove piston. See

Fig. 10

.

9. Remove output bearing and idler support assembly by lightly tapping on idler shaft with a soft-faced hammer. Drive out idler gear roll

pin and remove idler gear from output bearing and idler support. See

Fig. 11

. Remove output gear assembly, press out bearing race

from output bearing and idler support and save adjusting shim for reassembly.

Fig. 9: Removing Snap Ring & Low-Reverse Brake

Courtesy of FORD MOTOR CO.

Fig. 10: Identifying Transaxle Oil Passages

Courtesy of FORD MOTOR CO.

Fig. 11: Torque Converter Housing Components

Courtesy of FORD MOTOR CO.

COMPONENT DISASSEMBLY & REASSEMBLY

BAND SERVO

Inspection

Remove seal rings and inspect piston for damaged or worn piston. Ensure spring free length is 1.890" (48.00 mm). If less than specified,
replace spring. Install new seal rings on piston and servo retainer.

DIFFERENTIAL

Disassembly

1. Remove ring gear retaining bolts and ring gear. Using hammer and pin punch, drive out roll pin. See

Fig. 12

. Push out pinion gear shaft.

Remove pinion and side gears, with washers, from differential housing.

2. Using appropriate puller, remove side bearings from differential housing. DO NOT remove speedometer drive gear unless damaged.

Removal will damage speedometer drive gear.

Inspection

Check all gears for signs of excessive wear or damage. Check differential gear case for cracks or other damage. Replace as needed.

Reassembly

1. Reverse removal procedure to reassemble. Measure side gear and pinion gear backlash by inserting drive shafts into differential side

gears and supporting shafts in "V" blocks. Position dial indicator with plunger resting on teeth of pinion gear. See

Fig. 13

. Measure

backlash. Repeat procedure with plunger on other pinion gear.

2. Backlash readings should be less than .004" (.10 mm). If backlash is not within specification, adjust backlash by changing thrust

washers. Thrust washers are available in .079" (2.00 mm), .083" (2.10 mm) and .087" (2.20 mm) thicknesses. Use thrust washers of the
same thickness on both sides whenever possible.