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General Motors: Installation

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  1. To install orifice tube, coat inside of inlet pipe with refrigerant oil. Lubricate new orifice tube and "O" ring with refrigerant oil and insert them into inlet pipe.
  2. Install orifice tube with shorter screen end first (toward evaporator). To complete installation, reverse removal procedure. Recharge and test system for proper operation.
NOTE: Models not listed in table are equipped with a thermostatic expansion valve.
ORIFICE TUBE LOCATION & REMOVER/INSTALLER APPLICATION

Application Orifice Tube Location Orifice Tube Remover/Installer
Cars
"A" Body Condenser (1)
"B" Body Condenser J-26549-E
"C" & "H" Bodies Condenser J-26549-E
"D" Body Condenser J-26549-E
"E" & "K" Bodies Evaporator J-26549-D
"G" Body (2) J-26549-E
"J" Body Condenser J-26549-89
"W" Body Evaporator J-26549-E
"Y" Body Evaporator J-26549-E
Trucks & Vans
"C" & "K" Series Condenser J-26549-E
"G" & "P" Series Evaporator J-26549-D
"L" & "M" Series Evaporator J-26549-E
"S" & "T" Series Evaporator J-26549-D
"U" Series (3) J-26549-E
(1) Information is not available from manufacturer.
(2) Inside evaporator inlet refrigerant line where it connects to the condenser outlet.
(3) In condenser-to-evaporator core refrigerant lines, near support clamp or high-side service valve.
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