Dodge R1500 1999 Service Manual page 152

3) If A/C pressure switch is located near orifice tube,
remove switch to protect it from heat. While heat is being applied,
grip orifice tube using orifice tube remover/installer. Use a turning
motion along with a push-pull motion to loosen and remove orifice
tube.
Installation
1) Clean liquid line fitting with refrigerant oil. Add one
ounce of refrigerant oil to system. Coat inside of liquid line and "O"
rings with refrigerant oil. Lubricate 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.
Removal ("U" Series)
1) Remove air cleaner and duct assembly. Discharge A/C
system, using approved recovery/recycling equipment. Using a backup
wrench, loosen condenser outlet (liquid) line fitting at orifice tube.
Disconnect liquid line. Remove and discard "O" rings. Using needle-
nose pliers, remove orifice tube from liquid line.
2) If difficulty is encountered during removal of a plugged
or restricted orifice tube, remove as much residue as possible. Using
a heat gun, carefully apply heat 1/4" from dimples on liquid line. Be
careful not to overheat line.
3) If A/C pressure switch is located near orifice tube,
remove switch to protect it from heat. While heat is being applied,
grip orifice tube using needle-nose pliers. Use a turning motion along
with a push-pull motion to loosen and remove orifice tube.
Installation
1) Clean liquid line fitting with refrigerant oil. Add one
ounce of refrigerant oil to system. Coat inside of liquid line and "O"
rings with refrigerant oil. Lubricate 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
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Application
Cars
"C" Body ......................
"E" & "K" Body
"F" Body ..............
"G" Body ..............
"H" Body ..............
"J" Body ..............
"N" Body (2) ..........
"W" Body ......................
Trucks & Vans
"C" & "K" Series
With Rear A/C
Without Rear A/C
"G" Series ............
"L" & "M" Series
"S" & "T" Series
Orifice Tube
Location
................
Evaporator Inlet
Evaporator Inlet
Condenser Outlet
Condenser Outlet
Condenser Outlet
........ Evaporator Inlet
..... Condenser Outlet
Evaporator Inlet
...... Evaporator Inlet
...... Evaporator Inlet
Remover/Installer
(1) ..................
(1) ..................
.. ....................
.............
.............
.............
.............
(3) ..................
.............
.............
.............
.............
.............
Orifice Tube
J-26549-D
J-26549-D
J-26549-E
J-26549-D
J-26549-E
J-26549-E
J-26549-E
J-26549-E
J-26549-E
J-26549-E
J-26549-E
J-26549-D