Bonneville V6-231 3.8L VIN 3 SFI (1988)
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Filter without orifice - 2 inches
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Filter with orifice - 2.75 inches
Cut end of tube square with sharp tubing cutter.
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Remove external burr with file. Carefully cut out internal burr so that shavings do not drop into tubing. Prior to cutting the internal burr from fixed
vertical tubes, wedge a small cloth ball into the tube. Loose particles are swept away as the cloth is removed. High side particles may be caught in
the drier screen or the expansion device screen. Under no circumstances should foreign material enter the low side plumbing.
2.
Place the nut over the tubing. Then install the ferrule with the small end toward this nut. Do not install O-ring.
3.
Push tube into fitting, bottoming it out while the nut is securely tightened 15 N-m (11 ft.lbs.).
4.
Disassemble the joint. Lubricate the O-ring with clean 525 viscosity refrigeration oil. Install O-ring on tube. Reassemble and tighten 15 N-m (11
ft.lbs.).
To install the tube with filter, (see Figure 2) the following procedure should be followed after the A/C system is discharged for the repair.
1.
Remove engine compartment splash panel at cowl to access fitting to accumulator.
2.
Remove windshield washer reservoir or coolant reservoir as necessary to access lower A/C fitting at orifice tube.
3.
Disconnect A/C fitting at orifice tube and remove orifice.
4.
Disconnect A/C fitting at evaporator inlet.
5.
Remove the rear half of the A/C liquid line from vehicle.
6.
Install the tube with filter and align filter lines to match up with A/C fittings on vehicle and tighten fittings on filter. Install new O-ring and torque
fittings to specification, 15 N-m (11 ft.lbs.) (This step is not necessary on some Tube with Filter designs.)
7.
Tighten lower A/C fitting on liquid line to specification, 24 N-m (17 ft.lbs.).
8.
Tighten A/C fitting at evaporator inlet to specification, 24 N-m (17 ft.lbs.).
9.
Reinstall windshield washer reservoir or coolant reservoir removed in Step 2.
10.
Install engine compartment splash panel removed in Step 1.
SERVICE PARTS:
Part numbers are as follows:
INFORMATION:
Splice in type filter for vehicles with one piece liquid line.
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52450767 Filter without Orifice
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52450924 Filter with Orifice
IMPORTANT:
If the filter with orifice tube built in is used, the original orifice tube MUST be removed.
The filter without orifice tube is preferred if there is sufficient space to allow installation.
Tube with filter for vehicles with two piece liquid lines.
This tube with filter replaces the rear half of the liquid line. The original orifice is removed as the tube with filter has a built-in orifice.
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25533642 For 1989 or 1990 Vehicles
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25532892 For 1988 Vehicles
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
