Bonneville V6-231 3.8L VIN 3 SFI (1988)
Expansion Block/Orifice Tube: Customer Interest
A/C Compressor - Repetitively Inoperative
Bulletin Number:
90-1-10
Reference Number:
001204
Publish Date:
4/90
Subject:
REPETITIVE INOPERATIVE A/C COMPRESSOR (INSTALL IN-LINE FILTER AND NEW PROCEDURE)
Models
Affected:
1987 - 1990 BONNEVILLE MODELS
This bulletin cancels and replaces bulletin 88-1-20A issued 11/88. Please discard bulletin 88-1-20A, as this bulletin supersedes information in it.
CONDITION:
On vehicles which exhibit repeated orifice tube plugging, or when a compressor is being replaced due to internal causes, an in-line filter should be
installed. As stated in Bulletin 89-1-15 issued 8/89, General Motors recommends liquid line filters as they eliminate the need to use CFC-11 to flush the
A/C system during repair service. Two types of filters are available to service the 1987-90 Bonneville models and are described as follows:
FIGURE 1
^
In-line filter for vehicles with one piece liquid line from the condenser to evaporator (See Figure 1). This filter is a "splice-in" design so the
existing liquid line can be used. This type is available with or without an orifice tube built in.
FIGURE 2
^
In-line filter for vehicles with a two piece liquid line from the condenser to the evaporator (See Figure 2). This tube with filter is a direct
replacement for the existing rear half (evaporator side) of the liquid line. The orifice must be removed when using this type.
CORRECTION:
To install the splice-in filter, the following procedure should be followed after the A/C system has been discharged for the repair.
IMPORTANT:
To avoid leakage, do not install the O-Ring on the tube until Step 4, after the ferrule is properly seated. Locate an area with
sufficient clearance to install the filter.
1.
Remove proper amount of tubing:
