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HVAC System - General Servicing: Installation

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 1998 Pontiac Trans Sport, 1998 Oldsmobile Silhouette, 1998 Oldsmobile Bravada, 1998 GMC Yukon, and 1998 GMC Suburban. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean liquid line fitting with NEW refrigerant oil. Coat inside of liquid line and NEW "O" ring with NEW refrigerant oil. Lubricate NEW orifice tube and "O" ring with refrigerant oil and insert them into liquid line. Insert longer orifice tube screen (inlet end) into condenser outlet line first, toward condenser.
  2. Tighten liquid line fitting to 18 ft. lbs. (24 N.m). To complete installation, reverse removal procedure. Evacuate, charge and test system for proper operation.


  1. Clean liquid line fitting with NEW refrigerant oil. Add one ounce of NEW refrigerant oil to system. Coat inside of liquid line and NEW "O" rings with NEW refrigerant oil. Lubricate NEW orifice tube and "O" ring with refrigerant oil and insert them into liquid line. Insert shorter orifice tube screen into liquid line first with long screen (inlet end) toward condenser.
  2. Tighten liquid line fitting to 20 ft. lbs. (27 N.m). To complete installation, reverse removal procedure. Evacuate, charge and test system for proper operation.


  1. Clean liquid line fitting with NEW refrigerant oil. Add one ounce of NEW refrigerant oil to system. Coat inside of liquid line and NEW "O" rings with NEW refrigerant oil. Lubricate NEW orifice tube and "O" ring with refrigerant oil and insert them into liquid line. Insert orifice tube into liquid line with long screen (inlet end) toward condenser.
  2. Tighten liquid line fitting to 20 ft. lbs. (27 N.m). To complete installation, reverse removal procedure. Evacuate, charge and test system for proper operation.
ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION

Application Orifice Tube Location Orifice Tube Remover/Installer
"C" & "K" Series
With Rear A/C Evaporator Inlet J-26549-E
Without Rear A/C Condenser Outlet J-26549-E
"G" Series Evaporator Inlet J-26549-E
"L" & "M" Series Evaporator Inlet J-26549-E
"S" & "T" Series Evaporator Inlet J-26549-D
"U" Series Condenser Outlet *****
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