drum FORD FESTIVA 1991 Owner's Manual

Fig. 14: Exploded View Of Drum Hub Assembly

Courtesy of FORD MOTOR CO.
FRONT CLUTCH
Disassembly
Remove retainer plate snap ring. Remove retainer plate, drive and driven plates and dished plate. See Fig. 15 . Note position of dished plate
for reassembly. Using appropriate compressor, compress return springs to remove spring retainer snap ring. Remove spring compressor.
Remove spring retainer and return springs. Apply air pressure to front clutch oil passage and remove front clutch piston.
Inspection
Inspect all parts for wear or damage and replace as needed. Return springs must have free length of .992-1.071" (25.20-27.20 mm). If free
length is not within specification, replace spring(s). Check inside diameter of clutch drum bushing. If diameter exceeds 1.735" (44.08 mm),
replace bushing.
Reassembly
1. Reverse disassembly procedure to reassemble. Install new seal rings on piston and install piston by applying even pressure on perimeter
while rotating piston. Install front clutch return springs and retainer. Compress spring retainer. Install snap ring.
2. Install dished plate. See Fig. 15
. Install drive and driven clutch plates, retaining ring and snap ring. Using feeler gauge, measure
between snap ring and retaining plate. Clearance should be .063-.071" (1.60-1.80 mm). If clearance is not correct, select correct
thickness retaining plate. Retaining plates are available in thicknesses of .205" (5.20 mm) to .244" (6.20 mm) in .20 mm increments.
3. Place front clutch assembly over oil pump and apply air pressure (57 psi maximum) to front clutch oil passage in oil pump to check for
proper front clutch operation. See Fig. 16
.

Fig. 15: Exploded View Of Front Clutch

Courtesy of FORD MOTOR CO.
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1. Record direction of rotation one-way clutch locks and turns. Remove snap ring and pull out planetary carrier from one-way clutch inner
race. See Fig. 8
. Check for worn or damaged parts. Bushing wear on one-way clutch must not exceed 5.120" (130.06 mm).
2. Check clearance between pinion gears and washers in planetary carrier. If clearance exceeds .031" (.80 mm), replace planetary carrier.
Reverse disassembly procedure to reassemble. Install one-way clutch in inner race and ensure that it will turn in one direction
(clockwise) only.
REAR CLUTCH
Disassembly
1. Remove large snap ring. Lift out retaining plate, clutch plates, and dished plate. See Fig. 21 . Using appropriate compressor, compress
rear clutch spring retainer to remove small snap ring, spring retainer, and clutch return springs.
2. Place front clutch on oil pump and rear clutch hub on top of front clutch. Apply air pressure to rear clutch oil passage to remove piston.
See Fig. 16
. Remove and discard piston seal rings.
Inspection
Inspect for wear or damage. Ensure return spring free length is 1.031-1.071" (26.20-27.20 mm).
Reassembly
1. Install seal rings on piston and install in clutch drum by applying even pressure on perimeter of piston and rotate piston slowly. Install
return springs and spring retainer. Press spring retainer. Install snap ring. Note direction of dished plate and install. Install driven and
drive plates, retainer plate and snap ring. See Fig. 21
.
2. Ensure clearance between snap ring and retainer plate is .031-.039" (.80-1.00 mm). If clearance is not within specification, select correct
retaining plate. Retaining plates are available in thicknesses .189" (4.80 mm) to .244" (6.20 mm) in .20 mm increments.
3. Check rear clutch operation by placing forward clutch on oil pump and then rear clutch. Apply compressed air (70 psi maximum) to
rear clutch oil passage and check operation. See Fig. 16
.

Fig. 21: Exploded View Of Rear Clutch

Courtesy of FORD MOTOR CO.
REAR CLUTCH HUB
Disassembly, Inspection & Reassembly
Remove snap ring and separate hub from internal gear. Check for worn or damaged snap ring or gear and replace as needed. Reverse
disassembly procedure to reassemble hub.
VALVE BODY
Disassembly
1. Remove manual control valve. Remove oil strainer retaining bolts and oil strainer. Remove upper-to-lower valve body retaining bolts.
Separate valve bodies, separator plate and sub-body. DO NOT lose check balls and springs or orifice valve and spring. See Fig. 22
.
2. Remove, clean and install each valve individually as needed. See Fig. 22
. Lubricate moving parts with ATF. Ensure all valves move
(snap) freely. If valve sticks in its bore and cannot be freed, valve body must be replaced. DO NOT attempt to hone valve bores or
polish valves.
3. Inspect the valve springs for signs of damage or deformation. Measure valve spring free length and diameter. Refer to the VALVE
NOTE:Rem ove and clean one valve at a tim e to avoid incorrect installation. If any valves, valve springs, or
valve bodies are dam aged, the entire valve body assem bly m ust be replaced.
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Fig. 25: Measuring Differential Bearing Preload

Courtesy of FORD MOTOR CO.
3. Unthread gauge tool until differential bearings are seated. Install Differential Rotator into differential assembly. Using INCH lb. torque
wrench, rotate differential assembly while unthreading gauge tool. Unthread gauge tool until 4.3 INCH lbs. (.5 N.m) of turning torque is
obtained.
4. Using feeler gauge, measure gap of gauge tool. Select correct thrust shim(s) by adding .006" (.15 mm) to measured gauge tool ga p . S h ims
are available from in thicknesses of .043" (1.08 mm) to .079" (2.00 mm) in .040 mm increments.
5. Disassemble case halves. Remove gauge set and spacers. Install selected shim(s) in transaxle case. DO NOT exceed 3 shims. Remove
bearing race from gauge tool and install race in transaxle case. Reassemble transaxle case halves. Install bolts and tighten bolts to
specification. See TORQUE SPECIFICATIONS
.
6. Install Differential Rotator (T88C-77000-L) into differential assembly. Using INCH lb. torque wrench, rotate differential assembly to
confirm correct bearing preload. Turning torque should be 18-25 INCH lbs. (21.-2.8 N.m). If turning torque is not within specification,
repeat steps 1) through 6).
FINAL REASSEMBLY
1. Install low-reverse brake piston by applying even pressure on perimeter of piston while rotating slowly. Install 20 return springs and
low-reverse brake hub. Using appropriate compressor, compress return spring and install snap ring. See Fig. 9
.
2. Install dished plate with small end of dish facing away from piston. Install clutch discs, retainer ring and one-way clutch. Install one-
way clutch machined surface toward retainer ring. Install snap ring.
3. Using a feeler gauge, ensure clearance between one-way clutch and retainer plate is .031-.041" (.80-1.05 mm). If clearance is not within
specification, select correct retainer plate to obtain correct clearance. Retainer plates are available in thicknesses of .063" (1.60 mm)
to .102" (2.60 mm) in .20 mm increments. Apply air pressure to low-reverse oil passage and check for proper clutch operation. See Fig.
10 .
4. Place converter housing on bench with output shaft facing upward. Install needle bearing over output shaft. Install drum hub assembly
onto output shaft spline. Install needle bearing with thrust washer in recess of drum hub. Install rear planetary carrier onto one-way
clutch race. Install snap ring. Install rear planetary assembly into drum hub. Install oil tubes into transaxle case.
5. Install governor into transaxle case. Ensure alignment mark on governor sleeve is aligned with mark on transaxle case. Install go ve r n o r
cover.Tighten bolts to specification. Refer to TORQUE SPECIFICATIONS
. Apply appropriate gasket sealant to converter housing
and install transaxle case. Once case halves are secured in place, ensure all parts previously installed rotate without resistance.
6. Lubricate servo piston with ATF. Assembly servo retainer, piston, piston large seal and spring. Insert assembly into transaxle. Usin g "C"
clamp and socket, compress assembly and install snap ring.
7. Install thrust bearing and thrust washer. Install sun gear shell with sun gear spacer and sun gear. See Fig. 8
. Install front planetary
carrier with thrust washer onto sun gear. Install thrust washer and thrust bearing onto front of front planetary carrier.
8. Install seal sleeve to center of front planetary carrier. Install front ring gear. Install front ring gear needle bearing with rollers facing
upward. Install thrust washer. Match tangs on thrust washer with mating holes in rear clutch assembly.
9. Install rear clutch assembly. Install needle bearing. Companion thrust washer is fitted to oil pump support later in reassembly procedure.
Install front clutch assembly. Install band, band strut and band adjusting stop. Tighten band adjusting stop until band is secured in
place.
TOTAL END PLAY ADJUSTMENT
1. Remove oil pump cover from oil pump housing. Set oil pump housing aside. Coat pump support thrust washer with petroleum jelly and
install on end of pump support. Ensure washer tangs mate with holes in pump support.
2. Install pump cover in front clutch drum. DO NOT have front drum adjusting thrust shim installed. Place a straightedge across transaxle
NOTE:Low/reverse snap ring m ay not have been installed during production. Snap ring is required
during overhaul reassem bly.
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case over pump cover. Measure clearance between straightedge and pump cover, or between straightedge and transaxle case. See Fig.
26 .
3. If pump cover is below edge of transaxle case, clearance between straightedge and pump cover should not exceed .004" (.10 mm). If
pump cover is above edge of transaxle case, clearance between straightedge and transaxle case should not exceed .006" (.15 mm).
4. If pump cover and/or transaxle case clearance is correct, total clutch assembly end play will be correct. Total clutch assembly end play
should be .010-.020" (.25-.50 mm). If pump cover and/or transaxle case clearance is incorrect, remove pump cover and replace pump
support thrust washer. Thrust washers are available in thicknesses from .047" (1.20 mm) to .087" (2.20 mm) in .20 mm increments.
5. Reassemble oil pump by aligning marks on oil pump gears. Place pump cover on pump housing. Install and tighten bolts to
specification. See TORQUE SPECIFICATIONS
. Install oil pump shaft in oil pump and check operation by turning shaft by hand.
Gears should move freely without binding.
6. Install front clutch thrust washer over pump support. Install oil pump to transaxle. Install oil pump bolts. Apply sealant on 2 lower
bolts and tighten bolts to specification. Refer to the TORQUE SPECIFICATIONS
.
7. Position transaxle with oil pump facing down. Turn sun shell 2 revolutions. Insert screwdriver between tabs of front clutch and sun shell
deep slots. Using a feeler gauge, measure in the shallow slots. See Fig. 26
.
8. End play should be .020-.031" (.50-.80 mm). If end play is not within specification, remove oil pump and install correct thrust washer.
Thrust washers are available in thicknesses of .051" (1.30 mm) to .106" (2.70 mm) in .20 mm increments.
9. Tighten band adjusting stop bolt to 106-133 INCH lbs. (12-15 N.m). Loosen bolt 3 turns and then tighten lock nut to 41-59 ft. lbs. (56-
80 N.m). Install valve body steel check ball and spring in case. Install valve body and oil pan. Install turbine and oil pump sh aft s. In st al l
speedometer driven gear, oil dipstick and tube.
10. Install the vacuum modulator valve in transaxle. Make sure correct length control rod is installed in the modulator. Refer to VACUUM
THROTTLE VALVE DIAPHRAGM (MODULATOR) R & I under ON-VEHICLE SERVICE. Install kickdown solenoid and
park/neutral switch. Install torque converter. With converter properly installed, distance between machined pad on torque converter and
front edge of transaxle housing should be .50" (12.7 mm).

Fig. 26: Measuring Front Drum & Total End Play

Courtesy of FORD MOTOR CO.
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Differential Backlash.004 (.01)
Front Clutch Drum Bushing Diameter1.735 (44.08)
Front Clutch Pack Clearance.063-.071 (1.6-1.8)
Front Drum End Play.020-.031 (.5-.8)
Front Planetary Pinion Clearance.031 (.8)
Low/Reverse Clutch Pack Clearance.032-.041 (.8-1.05)
Oil Pump Gear Clearance.010 (.25)
Oil Pump Sealing Ring Clearance.016 (.40)
Outer Gear-To-Housing Clearance (1) .10 (.25)
Output Gear End Play.003 (.08)
Rear Clutch Pack Clearance.031-.039 (.8-1.0)
Rear Planetary Pinion Clearance.031 (.8)
(1)Oil pump outer gear.
Copyr ight 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.
Article GUID: A00025375
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