HVAC System - Compressor Servicing Cadillac Eldorado X

BODY DESIGNATIONS

BODY CODES (CARS)

BODY DESIGNATIONS (LIGHT TRUCKS & VANS)

COMPRESSOR APPLICATIONS

COMPRESSOR APPLICATIONS (CARS)

COMPRESSOR APPLICATIONS (LIGHT TRUCKS & VANS)

CLUTCH ASSEMBLY

Removal

1. Remove compressor from vehicle. Place compressor in Holding Fixture (J-33026 for HD6/HT6 and HD6/HR-6HE compressor or J-34992 for V5 compressor). On V5 compressor, use Clutch Plate Spanner (J-33027-A) to hold clutch plate. Remove compressor shaft nut using Shaft Nut Socket (J-33022). (Scheme 17)
2. Use Clutch Plate Remover/Installer (J-33013-B) to remove compressor clutch plate and hub. (Scheme 17)or (Scheme 18). Hold remover body and turn center screw into remover body to remove clutch plate and hub. Ensure forcing tip on remover/installer center screw is flat or end of shaft/axial plate will be damaged. Remove key from shaft.
3. Remove snap ring. Install Guide (J-33023-A) on front head. Position Pulley and Bearing Puller (J-41552 for HD6/HT6 and HD6/HR-6HE or J-33020 for V5 compressors) into inner circle of slots on pulley assembly. Turn puller clockwise in slots. Tighten puller and remove pulley assembly.
4. If bearing is to be removed, remove forcing screw from puller. With puller still engaged in pulley slots, invert assembly onto a solid flat surface. Use a hammer and Bearing Remover (J-9398-A) to drive bearing from pulley. (Scheme 17)or (Scheme 18). NOTE: It is not necessary to remove staking in front of bearing before removing bearing.
5. Disconnect clutch coil lead. Scribe marks on compressor and clutch coil for installation reference. Remove clutch coil using Puller Adapter (J-33023-A) and 2-jaw puller.

Scheme 17

Scheme 18

Installation

1. Align reference marks made during removal. Using Puller Adapter (J-33024) and Puller Bar (J-8433-1), press clutch coil onto compressor. Ensure clutch coil and installer stay lined up during installation. Using a 1/8" punch, stake clutch coil inner ring in 3 places, 120 degrees apart. Stake size should be 1/2 the area of punch tip and .010-.015" (.28-.38 mm). NOTE: To ensure proper clearance, it is necessary to remove old stake metal before installing a new bearing.
2. If bearing was removed from pulley, place pulley on Support(J-21352-A). DO NOT support pulley on flat surface, or pulley will be damaged. Install bearing in pulley using hammer, Handle (J-29886) and Bearing Installer (J-9481-A).
3. With pulley on support, use Bearing Staking Guide (J-33019-1) and Bearing Staking Pin (J-33019-2) to stake pulley in 3 places, 120 degrees apart. Reposition pulley on support to ensure full support under staking pin. Metal stake should be similar to original stake (down to, but not touching bearing). Position pulley on compressor.
4. Place Bearing Installer (J-33017) and Puller Guide (J-33023-A) over inner race of bearing. Using puller, press pulley onto compressor. Install snap ring. Install key in clutch plate, allowing key to protrude about 1/8" from rear of clutch plate.
5. Install clutch plate on compressor shaft. Using clutch plate remover/installer, press clutch plate onto compressor. Ensure key is still in keyway before installing clutch assembly.
6. Air gap between friction surfaces for HD6/HT6 and HD6/HR-6HE compressor is .020-.030" (.51-.76 mm); for V5 compressor air gap is .015-.020" (.38-.51 mm). Using spanner, install compressor shaft nut. Tighten shaft nut to 12.5 ft. lbs. (17 N.m). Check components for proper rotation.

SHAFT SEAL

Note. It is not necessary to replace shaft seal because of a small amount of oil found on adjacent surfaces. A small amount of oil is normal for lubrication purposes. Shaft seal should only be replaced after a confirmed refrigerant leak is found.

1. Discharge A/C system, using approved refrigerant recovery/recycling equipment. Loosen and reposition compressor in mounting bracket. Remove clutch plate and hub assembly. See CLUTCH ASSEMBLY. (Scheme 17)or (Scheme 18).
2. Remove shaft seal snap ring. Ensure all surfaces around seal are clean. Insert Shaft Seal Remover/Installer (J-23128-A) into shaft seal. Rotate handle clockwise to seat seal remover/installer in seal. Remove shaft seal. Using "O" Ring Remover (J-9553-01), remove "O" ring. Ensure shaft and inside of compressor neck are clean and free of foreign material. Thoroughly clean "O" ring groove in front head.

1. Install Shaft Seal Protector (J-34614) over compressor shaft. With shaft seal protector in place, lubricate new "O" ring with refrigerant oil and install it on "O" Ring Installer (J-33011).
2. Insert "O" ring installer in compressor until it bottoms. Move slide on "O" ring installer downward until "O" ring is released into groove. Rotate installer to seat "O" ring. Remove "O" ring installer.
3. Lubricate shaft seal with refrigerant oil. Install shaft seal onto Seal Installer (J-23128-A). Install shaft seal so flared side of lip seal is installed toward compressor. Expand seal using shaft seal remover/installer. Install shaft seal on Seal Protector (J-34614). Place seal protector over shaft.
4. Push shaft seal into compressor using a rotary motion until seal bottoms. Install new snap ring with flat side against seal. Install clutch plate and hub assembly onto compressor shaft. See CLUTCH ASSEMBLY.

Note. Removing compressor is not necessary to service clutch assembly.

1. Loosen tensioner and remove drive belt from pulley. Remove coolant/washer reservoir screws. Disconnect electrical harness from coolant reservoir. Release heater return pipe clips. Lift coolant/washer reservoir out of the way.
2. Using Clutch Drive Plate Holder (SA9510AC) and 10-mm deep socket, remove clutch drive plate center bolt. Insert Drive Plate Holder Sleeve (SA9506AC) into center of drive plate. Install remover bolt. While holding clutch remover handle, tighten remover bolt to remove drive plate. DO NOT lose shims.
3. Remove pulley snap ring. Position puller Center Adapter (SA9149AC-2) over end of compressor shaft. Attach 3-jaw puller to back of pulley. Tighten puller bolt against center adapter. Remove pulley. Remove clutch coil screws. Disconnect clutch coil wire. Remove clutch coil.

1. Install coil in original position. Tighten screws to 44 INCH lbs. (5 N.m). Install drive bolt, Drive Plate Installer (SA9149AC-3) and thrust bearing assembly through center of pulley. Finger tighten pulley installation bolt into compressor shaft.
2. Finger tighten nut on installation bolt to align pulley to compressor. Tighten nut until pulley bottoms in compressor. Loosen nut and remove installation bolt. Install snap ring with tapered side out.
3. Install drive plate on holder. Place thrust bearing on installation bolt. Insert installation bolt through drive plate. Place shims on installation bolt. Thread bolt into compressor shaft. Slide drive plate over splines of compressor shaft.
4. While holding end of installation bolt, tighten nut until drive plate bottoms. Loosen nut and remove installation bolt. Install center bolt. Tighten center bolt to 115 INCH lbs. (13 N.m).
5. Using a feeler gauge, measure clearance between drive plate and pulley. Clearance should be .018"-.030" (.46-.76 mm). If clearance is not as specified, add or remove shims as necessary.