1991 FORD FESTIVA Service Manual

Courtesy of MAZDA MOTORS CO., U.S.A.
NIPPONDENSO 6 & 10-CYL CLUTCH R & I
Removal
1. Remove A/C compressor. Remove pressure plate shaft bolt using socket wrench and Clutch Stopper (07112-76060). Install Clutch
Remover (07112-66040) on pressure plate. Using clutch stopper and socket wrench, rotate clutch remover to remove pressure plate.
2. Remove shims from pressure plate. Remove snap ring from compressor. Tap rotor off shaft with plastic hammer. Disconnect stator wire
from housing. Remove snap ring from inside stator. Remove stator. See Fig. 12
.
Installation
To install, reverse removal procedure. Ensure snap rings are installed with beveled side up. tighten shaft bolt to 10 ft. lbs. 14 N.m). Ensure
clutch clearance is .014-.026" (.36-66 mm). adjust clearance by adding or subtracting shims as necessary.
NIPPONDENSO 6 & 10-CYL SHAFT SEAL R & I
Removal
1. Hold clutch hub stationary and remove center nut. Screw remover into center of hub. Turn center bolt to remove pressure plate.
2. Remove shims from shaft. Remove snap ring from inside of pulley. Tap pulley off of shaft with plastic mallet. Be careful not to distort
pulley while removing.
3. Disconnect clutch coil wires from compressor housing. remove snap ring inside coil and lift coil off compressor. Pry dust seal out from
around compressor shaft (if equipped).
4. Place shaft key remover on shaft and turn to remove key. Remove drain plug (if equipped). Remove service valves-to-compressor body
bolts. Remove valves. Discard "O" rings. Drain oil out of compressor.
5. Remove 6 through bolts from front head of compressor and discard washers. Tap head loose from compressor; be careful not to scratch
sealing surfaces. remove snap ring (if equipped) from front housing. Press seal plate out. Remove seal from shaft. See Fig. 14
.
Installation
1. Lubricate shaft seal with clean refrigerant oil and place on compressor shaft. Lubricate seal plate and "O" ring (if equipped) and install
in front housing. Install snap ring (if equipped).
2. Place front housing on compressor body. Install through bolts with new washers. Tighten bolts evenly and alternately to 18 ft. lbs. (24
N.m). Install shaft key using installer and plastic mallet. Insert dust seal into front of compressor.
3. Install drain plug with new gasket. Add correct amount of refrigerant oil to compressor. If service valves were removed, coat n ew "O"
rings with refrigerant oil and install service valves.
4. Place clutch coil on compressor and install snap ring. Install shims on shaft to adjust pressure plate-to-rotor clearance to .016-
.028" (.41-.71 mm). Tighten shaft nut to 12 ft. lbs. (16 N.m). CAUTION: DO NOT dam age pulley when tapping on rotor.
NOTE:Check com pressor refrigerant oil level when replacing seals. See COMPRESSOR OIL CHECKING article
in the AIR CONDIT IONING & HEAT section.
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Fig. 14: Nippondenso 6
-Cylinder Compressor
Courtesy of CHRYSLER MOTORS.
PANASONIC ROTARY VANE CLUTCH R & I
Removal
1. Insert two 5 mm bolts into threaded holes in armature. Using screwdriver as a lever in between bolts, remove center bolt. Remove
armature and shims from shaft.
2. remove snap ring. Using puller, remove pulley. Disconnect electrical leads from field coil. Remove 3 field coil mounting bolts. Remove
field coil.
Inspection
Check friction surfaces for damage from excessive heat or grooving caused by slippage. Replace parts as necessary. Check coil winding for
shorted or open winding. Clean surfaces with solvent and dry rag.
Installation
To install, reverse removal procedure. Tighten field coil retaining screws to 30-56 INCH lbs. (3.4-6.4 N.m). Ensure pulley-to-armature gap
is .016-.024" (.4-.6 mm). If gap is not as specified, adjust by adding or removing shims. Tighten center bolt to 96-108 INCH lbs. (11-13 N.m).
See Fig. 15
.
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Fig. 15: Exploded View of Rotary Vane Compressor (Panasonic)

Courtesy of CHRYSLER MOTORS.
PANASONIC ROTARY VANE SHAFT SEAL R & I
Removal & Installation
Remove clutch and coil. Remove seal plate snap ring. Using seal plate remover, engage seal and remove seal plate. Using seal remo ve r , e n ga ge
seal ears and remove seal. See Fig. 16
. To install, reverse removal procedure. Coat new seal plate and seal with clean refrigerant oil before
installing. DO NOT touch seal surfaces with fingers.
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Fig. 16: Removing Rotary Vane Compressor Shaft Seal (Panasonic)

Courtesy of CHRYSLER MOTORS.
SANDEN SCROLL CLUTCH & SHAFT SEAL R & I
Removal
1. Secure 2 box-end wrenches, to hold armature plate, using two 6 mm bolts 1 in. (25 mm) or longer. Holding box-end wrenches, use a
socket and ratchet to remove clutch hub nut.
2. Remove armature plate. See Fig. 17
. Remove snap ring with internal snap ring pliers. Remove clutch hub. Remove snap ring and clutch
coil.
3. Remove bolts retaining front housing. Remove front housing and "O" ring from compressor. Remove shaft seal from shaft. Remove snap
ring from back side of front housing. Remove seal plate.
4. Use brass drift and hammer to lightly tap shaft bearing from front housing. Remove felt seal.
Installation
1. Lubricate shaft seal with compressor oil. Align notches on shaft seal with notches on crank shaft. Install shaft seal plate on the front
housing. Install front seal housing to compressor.
2. Use Press Tool (MB991301) to install felt into front housing. Make sure felt metal section faces up. Use Press Tool (MB991301) to
press bearing into front housing.
3. Align and install clutch coil. Install snap ring so that the tapered surface is facing outward. Install clutch hub. Install snap ring. Install
armature plate, aligning raised area to notch.
4. Secure 2 box-end wrenches, to hold armature plate, using two 6 mm bolts 1 in. (25 mm) or longer. Holding box-end wrenches, use a
socket and ratchet to tighten clutch hub nut to 12 ft. lbs. (16 N.m).
5. Use feeler gauge to measure distance between armature and clutch hub. If gap is not .01-.02" (.25-.51 mm), remove clutch assemb l y an d
add or remove shims accordingly.
NOTE:Check com pressor refrigerant oil level when replacing seals.
NOTE:Do not touch the sealing surfaces of the shaft seal carbon ring and shaft seal plate.
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Fig. 17: Sanden Scroll Compressor

Courtesy of CHRYSLER MOTORS.
SANDEN 5-CYL CLUTCH R & I
Removal
1. Hold clutch hub stationary and remove shaft nut. Remove clutch plate using puller. Remove external front housing snap ring and
internal bearing snap ring. See Fig. 16
.
2. Install puller and pull rotor assembly off. remove 3 screws and clutch coil. Use driver and hammer to drive bearing out from hub.
Installation
1. Install new bearing; ensure installer contacts outer race of bearing. Install snap ring and ensure bearing turns freely. Install clutch coil on
compressor.
2. Support compressor on rear mounting ears. Align rotor on front housing hub. Use adapter and press to install rotor (or drive into place
with soft mallet). After rotor is seated, install front snap ring.
SANDEN 5-CYL SHAFT SEAL R & I
Removal
1. Hold clutch hub stationary and remove shaft nut with thin wall socket. Use clutch plate puller to remove clutch plate. Tap key out of
slot in crankshaft.
2. Remove seal retainer with seal remover and 3/4" socket wrench. Use seal seat remover tongs to pull seal seat off compressor shaft. Insert
seal remover into front housing and turn to engage tangs on seal. Lift seal out. Remove seal "O" ring from front housing, being careful
not to scratch shaft.
Installation
1. Coat "O" ring with refrigerant oil and install into groove. Load a new seal onto installer, being careful not to touch carbon sealing
surface with fingers. Install shaft protector. Dip seal in refrigerant oil and install on shaft. Rotate seal clockwise until seal fits into flats
on shaft. Remove seal installer by turning counterclockwise.
2. Coat seal seat with refrigerant oil and install with tongs. Reinstall seal seat retainer (with flat side down). Install shims and shaft key.
Rotate shaft several times to help break in seal.
3. Use a press to install clutch plate. Make sure that air gap is .016-.031" (.41-.79 mm). Hold plate stationary and install shaft n u t .
NOTE:Check com pressor refrigerant oil level when replacing seals.
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Fig. 18: Sanden 5
-Cylinder Compressor
Courtesy of CHRYSLER MOTORS.
SANDEN 7-CYL CLUTCH COIL & BEARING R & I
Removal
1. Hold clutch hub stationary and remove shaft nut. Remove clutch plate using Clutch Plate Puller (09977-21110). Remove clutch shims
and bearing dust cover. Remove external front housing snap ring.
2. Install puller, and pull drive pulley assembly off. Detach clutch coil lead from compressor housing. Remove clutch coil snap ring and
clutch coil. If necessary, invert drive pulley assembly and remove snap ring and bearing.
Installation
1. Ensure clutch coil protrusion aligns with hole in compressor housing, and install clutch coil snap ring. Install drive pulley assembly
using Drive Pulley Installer (09977-21811).
2. install external bearing snap ring. Using Seal Installer (09977-21800), install bearing dust cover. After dust cover installation, ensure
there is no contact between cover and front housing.
3. Install clutch shims and clutch plate. Tighten shaft nut to 12-14 ft. lbs. (17-19 N.m). Using a dial indicator, apply voltage to clutch coil
to check air gap between clutch plate and drive pulley assembly. Ensure air gap is .016-.032" (.41-.80 mm).
SANDEN 7-CYL SHAFT SEAL R & I
Removal
1. Hold clutch hub stationary and remove shaft nut. Remove clutch plate using Clutch Plate Puller (09977-21110). Tap shaft key out of
slot in compressor shaft. Remove clutch shims.
2. Remove seal retainer felt ring. Remove shaft seal seat snap ring with snap ring pliers. Insert Seal Seat Remover/Installer (09977-21400)
into front housing and turn to engage tangs on seat. Lift seal seat out.
3. Insert seal Remover/Installer (09977-21510) into front housing and turn to engage tangs on seal. carefully lift seal seat out without
scratching compressor shaft.
Installation
1. Install Shaft Seal Guide Sleeve (09977-21700) over compressor shaft. Dip seal in refrigerant oil and install seal on sleeve. Using seal
remover/installer, rotate seal clockwise until seal is engaged. Remove seal remover/installer by turning it counterclockwise.
2. Coat seal seat with refrigerant oil and install seal with seal seat remover/installer. Remove shaft seal guide sleeve. Install snap ring.
Install seal retainer felt ring using seal seat remover/installer. Install clutch shims and shaft key.
3. Install clutch plate. Tighten shaft nut to 12-14 ft. lbs. (17-19 N.m). Using dial indicator, apply voltage to clutch coil to check air gap
between clutch plate and drive pulley assembly. Ensure air gap is .016-.032" (.41-.80 mm).
NOTE:Check com pressor refrigerant oil level when replacing seals.
Copyr ight 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.
Article GUID: A00038955
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Back To Article
1991-92 AIR CONDIT IONING & HEAT ING
A/C System General Servicing
HANDLING/SAFETY PRECAUTIONS
1. Always work in a well-ventilated, clean area. Refrigerant R-134a is colorless and is invisible as a gas. Refrigerant (R-12 or R-134a) is
heavier than oxygen and will displace oxygen in a confined area. Avoid breathing refrigerant vapors. Exposure may irritate eyes, nose
and throat.
2. The system's high pressure can cause severe injury to eyes and skin if a hose were to burst. Always wear eye protection when working
around A/C system and refrigerant. If necessary, wear rubber gloves or other protective clothing.
3. Refrigerant evaporates quickly when exposed to atmosphere, freezing anything it contacts. If liquid refrigerant contacts eyes or skin, DO
NOT rub eyes or skin. Immediately flush affected area with cool water for 15 minutes and consult a doctor or hospital.
4. Never use R-134a in combination with compressed air for leak testing. Pressurized R-134a in the presence of oxygen (air concentrations
greater than 60% by volume) may form a combustible mixture. DO NOT introduce compressed air into R-134a containers (full or
empty), A/C system components or service equipment.
5. DO NOT expose A/C system components to high temperatures, steam cleaning for example, as excessive heat will cause
refrigerant/system pressure to increase. Never expose refrigerant directly to open flame. If refrigerant needs to be warmed, place bottom
of refrigerant tank in warm water. Water temperature MUST NOT exceed 125°F (52°C).
6. Use care when handling refrigerant containers. DO NOT drop, strike, puncture or incinerate containers. Use Department Of
Transportation (DOT) approved, DOT 4BW or DOT 4BA, refrigerant containers.
7. Never overfill refrigerant containers. The safe filling level of a refrigerant container MUST NOT exceed 60% of the container's gross
weight rating. Store refrigerant containers at temperature less than 125°F (52°C).
8. R-12 refrigerant (Freon) will be sold and stored in White containers, while R-134a refrigerant will be sold and stored in 30- or 50-
pound Light Blue containers.
9. R-12 and R-134a refrigerants must never be mixed, as their desiccants and lubricants are not compatible. If the refrigerants are mixed,
system cross-contamination or A/C system component failure may occur. Always use separate servicing and refrigerant
recovery/recycling equipment.
10. Follow equipment manufacturer instructions of all service equipment to be used. The Material Safety Data Sheet (MSDS), provided by
refrigerant manufacturer/suppliers, contains valuable information regarding the safe handling of R-12 or R-134a refrigerants.
IDENTIFYING R-134A SYSTEMS & COMPONENTS
To prevent refrigerant cross-contamination, use following methods to identify R-134a based systems and components.
Fittings & "O" Rings
All R-134a based A/C systems use 1/2" - 16 ACME threaded fittings (identifiable by square threads) and quick-connect service couplings. See
Fig. 1
. Besides the use of these fittings, most manufacturers will use Green colored "O" rings in R-134a systems. CAUT ION: When discharging air conditioning system , use only approved refrigerant recovery/recycling
equipm ent. Make every attem pt to avoid discharging refrigerant into the atm osphere.
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Fig. 1: Identifying R
-134a Fittings & Quick Connect Service Couplings
Courtesy of AUDI OF AMERICA, INC.
Underhood A/C Specification Labels
Most R-134a based systems will be identified through the use of Green or Light Blue underhood labels, or with R-134a refrigerant clearly
printed on labels. See Fig. 2 . Some manufacturers will identify R-12 based systems with White, Red, Silver or Gold underhood labels. Before
servicing an A/C system, always determine which refrigerant is being used.
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