A/C Compressor - Revised Parts
89chrysler01Models
All With C-171 Compressor
Subject
Air Conditioning Compressor End Covers/Valve Plates
Index
AIR CONDITIONING
Date
January 30, 1989
No.
24-01-89
P-260 (C24-06)
SYMPTOM/CONDITION
Service replacement air conditioning compressor valve plates and end covers.
DIAGNOSIS
To improve the quality of the C-171 air conditioning compressor, some running changes were made during the 1988 model year. These changes include new style thin valve plates which improves compressor efficiency and the elimination of the low silicon rear end covers which will reduce through-bolt leakage. The new covers and valve plates must be replaced as a set when servicing this portion of the compressor.
The new thin valve plates require new end covers, and therefore these new valve plates cannot be used with old style end covers.
The low silicon rear end covers do not have the sealing ability of the high silicon rear end covers and therefore should not be used for any service repairs.
PARTS REQUIRED
To prevent confusion and to make the repair procedure easier, two new service replacement high silicon end cover/valve plate kits have been made available which can be used to service all end covers and valve plates for all model years.
NOTE: WHEN SERVICING EITHER VALVE PLATES OR COVERS, BOTH MUST BE REPLACED. DO NOT MIX OLD COVERS AND OLD VALVE PLATES WITH THE NEW ONES IN THE KITS LISTED BELOW.
Front End Cover/Valve Plate Kit, PN 4494333
Consists of:
New Front Cover PN 3849975
New Front Valve Plate PN 3849970
Gaskets PN 3846698
Instruction Sheet PN K6852840
Rear End Cover/Valve Plate Kit PN 4494334
Consists of:
New Rear Cover PN 3849968
New Rear Valve Plate PN 3849972
Gaskets PN 3846698
Instruction Sheet PN K6852840
These high silicon end cover/valve plates are available only as a kit. They will not be available as separate pieces from service parts.
The low silicon rear end covers have been purged from service parts. There may be some of these low silicon rear end covers left in dealer stock but these low silicon pieces should not be used when repairing the compressor.
FIGURE 1:
The low silicon rear end plates can be identified by the numbers "49751" on the outside of the cover or by the letter "HI" on the inside of the cover. See Figure 1 for more information.
FIGURE 2:
The high silicon rear end plates can be identified by the numbers "09104" on either the outside or the inside of the rear covers. See Figure 2 for more information.
POLICY: Information only