1991 FORD FESTIVA torque

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 seve r a l
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
Applicationpsi (kg/cm2 )
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)
Applicationpsi (kg/cm2 )
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 ReadingGovernor Pressure psi (kg/cm2 )
0 in. Hg (Atmosphere)14-23 (.98-1.6)
8 in. Hg6-14 (.42-.98)
Applicationpsi (kg/cm2 )
Aspire & Festiva
20 MPH13-21 (.9-1.5)
35 MPH25-35 (1.8-2.5)
55 MPH58-70 (4.0-4.8)
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snap ring. Release the "C" clamp and remove the servo piston. See Fig. 2 . R e mo ve go ve r n o r c o ve r a n d p u l l go ve r n o r fr o m t r a n sa xl e
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.

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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 t h e
same thickness on both sides whenever possible.
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1. Place idler shaft holder or hex wrench in vise and place idler shaft on wrench. Install outer races in idler gear. Place bearing, idler gear,
adjustment shim, spacers, bearing and nut on idler shaft and tighten nut to 94-130 ft. lbs. (127-176 N.m).
2. Measure bearing preload. Mount idler gear in vise. Using INCH lb. torque wrench, measure idler gear shaft turning torque. Turning
torque should be .26-8.0 INCH lbs. (.03-.90 N.m). If preload is not within specification, change selective shims. Selective size shims are
available from .004" (.10 mm) to .008" (.20 mm) in .04 mm increments. One .020" (.50 mm) shim is available. DO NOT use more than
7 shims. Once correct preload is obtained, retighten idler gear locknut to 94-130 ft. lbs. (128-177 N.m)

Fig. 18: Exploded View Of Idler Gear Assembly

Courtesy of FORD MOTOR CO.
LOW-REVERSE BRAKE
Inspection
Check all components for signs of damage or excessive wear. Check free length of return springs. See LOW-REVERSE BRAKE SPRING
SPECIFICATIONS . If not correct, replace spring(s).
LOW-REVERSE BRAKE SPRING SPECIFICATIONS
OIL PUMP
Disassembly
Remove pump cover retaining bolts and separate cover from pump body. Remove pump flange. See Fig. 19 . If gears are to be reused, match
mark gears to reassemble in same position. Remove drive and driven gears.
Inspection
1. Check the condition of the gear teeth and surfaces. Check seal rings for signs of cracks or breaks and replace as needed. Check condition
of pump housing sleeve and inner gear bushing. See Fig. 20
. See the OIL PUMP SPECIFICATIONS . Check sleeve outer diameter
and bushing inner diameter.
2. If sleeve diameter is less than 1.492" (37.90 mm) or bushing diameter is greater than 1.499" (38.08 mm) replace sleeve and bushing as a
set. Check pump clearances and compare with values shown in the OIL PUMP SPECIFICATIONS
.
Reassembly
Apply ATF on all parts. To assemble, reverse disassembly procedure. DO NOTtighten pump cover to oil pump housing. Oil pump reassembly
is completed during transaxle reassembly.
OIL PUMP SPECIFICATIONS
ApplicationFree Length In. (mm)
Aspire & Festiva1.091 (27.70)
Tracer1.070-1.110 (27.20-28.20)
ApplicationClearance In. (mm)
Drive & Driven Gear-To-Pump Cover.001-.003 (.025-.08)
Driven Gear-To-Crescent.006-.010 (.14-.25)
Driven Gear-To-Pump Housing.002-.003 (.04-.08)
Seal Ring Side.002-.016 (.04-.40)
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Fig. 23: Locating Valve Body Check Balls & Tightening Bolts

Courtesy of GENERAL MOTORS CORP.
TRANSAXLE CASE
Inspection
Inspect case for cracks and stripped threads. Inspect gasket surfaces and mating surfaces for burrs. Check vent for obstructions, and check all
fluid passages for obstructions and leakage. Inspect case bushing for scores. Check all parking linkage parts for wear or damage.
TRANSAXLE REASSEMBLY
OUTPUT SHAFT BEARING PRELOAD
1. Position output shaft into torque converter housing. Position output shaft outer bearing race in recessed end of Gauge Tool (T87C-
770002DJ). Place gauge tool over output shaft. See Fig. 24
.
2. Ensure gauge tool is completely threaded together so that no gap is present. Position spacer collars and assemble output bearing and
idler support to converter housing using supplied bolts and washers of tool set. See Fig. 24
. Tighten bolts to 14-19 ft. lbs. (26 N.m).
NOTE:Handle all parts carefully to avoid dam aging bearings and m ating surfaces. Lubricate all parts with
clean AT F. Use petroleum jelly on gaskets, thrust washers and needle bearings to retain them in place.
Soak all friction discs in AT F for at least 15 m inutes. Use all new gaskets and seals, and tighten bolts
evenly.
NOTE:For identification and position of thrust bearings and washers, see Fig. 27
.
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Fig. 24: Measuring Output Shaft Bearing Preload

Courtesy of FORD MOTOR CO.
3. Unthread gauge tool until output shaft bearings are seated and no play exists. Install Torque Adapter (T87C77000-E) over splined end
of output shaft. Using INCH lb. torque wrench, rotate output shaft while unthreading gauge tool. Unthread gauge tool until 4.42-7.97
INCH lbs. (.5-.9 N.m) of turning torque is obtained.
4. Using feeler gauge, measure gap of gauge tool. Select correct thrust shim(s) that match measured gauge tool gap. Shims are available
from in thicknesses of .004" (.10 mm) to .007" (.18 mm) in .02 mm increments. One shim is available in thickness of .019" (.50 mm).
5. Disassemble output bearing and idler support from converter housing. Remove gauge set and spacers. Install selected shim(s) in output
bearing and idler support. DO NOT exceed 7 shims. Remove bearing race from gauge tool and install race in support. Reassemble
converter housing and output bearing and idler support. Install bolts and tighten retaining bolts to specification. Refer to TORQUE
SPECIFICATIONS .
6. Install Torque Adapter (T87C77000-E) over splined end of output shaft. Using INCH lb. torque wrench, rotate output shaft to confirm
correct bearing preload. Turning torque should be .26-7.96 INCH lbs. (.03-.9 N.m). If turning torque is not within specification, repeat
steps 1) through 6).
7. Once correct output shaft bearing preload is obtained, remove output bearing and idler gear support. Replace idler gear shaft seal on
idler gear shaft. Install idler gear into converter housing. Install output gear and bearing support. Ensure alignment groove in idler gear
shaft is aligned with support ridge of output bearing and idler support.
8. Install new idler gear shaft roll pin. Install output gear and bearing support bolts and tighten bolts to specification. See TORQUE
SPECIFICATIONS .
DIFFERENTIAL BEARING PRELOAD ADJUSTMENT
1. Install differential assembly into converter housing. Position differential side bearing race in recessed end of Gauge Tool (T87C-
770002DJ). Place gauge tool on differential. See Fig. 25
.
2. Ensure gauge tool is completely threaded together so that no gap is present. Position spacer collars and assemble case halves using
supplied bolts and washers of tool set. See Fig. 25
. Tighten bolts to 22-34 ft. lbs. (292D46 N.m).
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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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