EXPERTEC TSB (T85-46A)
Publication date: 1985-02-12Reference number: T85-46A
Supersedes refnos: 36-1, 85-1-17A, 85-114
EXPERTEC TSB
TECHNICAL SERVICE BULLETIN
A/C SYSTEM REPLACEMENT O-RINGS - CAPTURED-TYPE O-RINGS
Model(s): 1984-85 GM "J" Series Vehicles
Bulletin No.: Chevrolet 85-114
Oldsmobile 36-1
Buick 85-1-17A
Cadillac T85-46A
Date: February 12, 1985
SERVICE INFORMATION
All 1985 models and the 1984 "J" series use "captured" -type o-rings at refrigerant hose and tube connections. All other past models use the "standard type" o-ring configuration. The A/C compressor ports to hose assembly continues to use the speicial o-ring. A new o-ring, specifically for the 3/4 inch tube of an evaporator/condensor block fitting, has been released. The 1/2 inch tube of the evaporator/ condensor block fitting will continue to use the previous captured o-ring.
TORQUE SPECIFICATIONS
- Evaporator Block Fitting Bolt (1) 12 ft-lb
- Condensor Block Fitting Bolt (1) 9 ft-lb
TUBE O.D.
| Description | 3/8" | 1/2" | 3/4" | |
|---|---|---|---|---|
| Captured | P/N | 3053197 | 3053203 | 3053204 |
| GR.# | 9.242 | 9.196 | 9.196 | |
| Standard | P/N | 6555088 | 3140600 | 6556521 |
| GR.# | 9.196 | 8.955 | 9.214 | |
| Compressor | P/N | 5887997 | ||
| Ports | GR.# | 9.226 | ||
| Block | P/N | 3053197 | 3053203 | 3090774 |
| Fittings | GR.# | 9.242 | 9.196 | 9.196 |
When replacing A/C system o-rings, the correct size and type should be carefully determined. Installing o-rings of improper size and/or type may result in a refrigerant leak.