Dodge Sprinter 2006 Manual page 2105

VA
WARNING: Refer to the applicable warnings and
cautions for this system before performing the fol-
lowing operation (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - WARNINGS) and (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTIONS). Failure to follow the warnings and cau-
tions could result in possible personal injury or
death.
(1) Rem ove t h e H VAC h ou sin g (Refer t o 24 -
H E ATING & AIR CONDITIONING/DISTRIBUTION/
H VAC H OUSING - RE MOVAL).
(2) Disa ssem ble t h e H VAC h ou sin g t o a ccess t h e
A/C eva por a t or (Refer t o 24 - H E ATING & AIR CON-
DITIONING/DISTRIBUTION/H VAC
DISASSE MBLY).
(3) Lift t h e A/C eva por a t or ou t of t h e lower h a lf of
t h e H VAC h ou sin g (F ig. 9).
Fig. 9 HVAC Housing
1 - SCREW (12)
2 - UPPER HOUSING
3 - A/C EVAPORATOR
4 - EVAPORATOR O-RING SEAL (2)
5 - EVAPORATOR GASKET
6 - VENTILATION HOUSING GASKET
7 - LOWER HOUSING
8 - WIRING HARNESS
9 - BOLT (3)
10 - HEATER CORE
11 - HEATER CORE TUBE ASSEMBLY
12 - HEATER CORE TUBE GASKET
13 - HEATER CORE TUBE O-RING SEAL (2)
INSTALLA TION
NOTE: If the A/C evaporator is being replaced, add
60 milliliters (2 fluid ounces) of refrigerant oil to the
refrigerant system. Use only refrigerant oil of the
type recommended for the A/C compressor in the
vehicle.
(1) In st a ll t h e A/C eva por a t or in t o t h e lower h a lf of
t h e H VAC h ou sin g.
(2) Assem ble t h e H VAC h ou sin g (Refer t o 24 -
H E ATING & AIR CONDITIONING/DISTRIBUTION/
H VAC H OUSING - ASSE MBLY).
(3) In st a ll t h e H VAC h ou sin g (Refer t o 24 - H E AT-
ING & AIR CONDITIONING/DISTRIBUTION/H VAC
H OUSING - INSTALLATION).
A / C EX PAN SI ON VALV E
DESCRIPTION
H OUSING -
Th e A/C expa n sion va lve con t r ols t h e a m ou n t of
r efr iger a n t en t er in g t h e A/C eva por a t or a n d is of a
t h er m ost a t ic expa n sion va lve (TXV) design (F ig. 10).
Th e A/C expa n sion va lve con sist s of a n a lu m in u m
H -va lve t ype body wit h a n in t egr a l t h er m a l sen sor.
Th e A/C expa n sion va lve is loca t ed a t t h e da sh
pa n el bet ween t h e A/C r efr iger a n t lin es a n d t h e A/C
eva por a t or.
1 - A/C EXPANSION VALVE
2 - THERMAL SENSOR
OPERA TION
H igh -pr essu r e, h igh t em per a t u r e liqu id r efr iger a n t
fr om t h e liqu id lin e pa sses t h r ou gh t h e expa n sion
va lve or ifice, con ver t in g it in t o a low-pr essu r e, low-
t em per a t u r e m ixt u r e of liqu id a n d ga s befor e it
en t er s t h e A/C eva por a t or. A t h er m a l sen sor in t h e
A/C expa n sion va lve m on it or s t h e t em per a t u r e of t h e
r efr iger a n t lea vin g t h e A/C eva por a t or a n d a dju st s
t h e or ifice size a t t h e eva por a t or in let t o a llow t h e
pr oper a m ou n t of r efr iger a n t in t o t h e A/C eva por a t or
Fig. 10 Front A/C Expansion Valve
PLUMBING 24 - 73