Description
Outline
The air conditioner system delivers cooled air into the passenger compartment by circulating refrigerant through the sys-
tem as shown below.
CONDENSOR
This car uses HFC-134a {R-134a) refrigerant which does not contain chlorofluorocarbons Pay attention to the following
service items:
. Do not mix refrigerants CFC-I2 (R-l21 and HFC-134a (R-134a) They are not compatible'
. Use onty the recommended potyatkytenegtycol {PAG) refrigerant oil (ND-OIL 8: P/N 38899-PR7-A01) designed for the R-
134a compressor. Intermixing the recommended (PAG) refrigerant oil with any other refrigerant oil will result in com-
pressor tailure.
.A||lvcsystemparts(compressor.dischargeIine,suotionIine,evaporator,condenser.receiver/dryer,expansionva|ve.
o-ringsforioints}havetobeproperforre'rigerantR-l34a.DonotconfusewithR.l2parts.
. Use a halogen gas leak detector designed for refrigerant R-134a'
. R-.12 and C-l34a refrigerant servicing equipment are not interchangeable. Only use a Recovery/Recyclins/Charging
System that is U.L.-listed and is certifLd to meet the requirements of sAE J2210 to service R-134a air conditioning sys-
rems.
. Always recover the refrigerant R-134a with an approved Recover/Recycling/Charging System before disconnecting any
A,/C fitting.
coMpRESsoR -coNDENSER - RECEIVER/DRYER
High temperature/
high pressure gas
Suction and comPression
Less moisturized
low pressure vaPor
High temperature/ Traps debris High temperature/
hilh pressure liquid and removes high pressure liquid
Radiation of heat molsture
More liquidified
low Pressure vaPor
Absorption of heat
EVAPORATOR <-'----------.- EXPANSION VALVE
EVAFORATOR
22-6
Compressor
Glutch Inspection
Check the plated parts ot the pressure plate tor color
changes. peeling or other damage. lf there is dam-
8ge, replace the clutch set.
Check the pulley bearing play and drag by rotating
the pulley by hand. Replace the clutch set with a new
one if it is noisv or has excessive play/drag
Measure the clearance betlveen the pulley and the
pressure plate all the way around. lf the clearance is
not within specified limits, the pressure plate must be
removed and shims added or removed as required.
Jollowing the procedure on page 22-33.
Clearrnce: 0.50 t 0.15 mm {0.02 i 0.01 inl
NOTE: The shims are available in three thicknesses:
0.1 mm, 0.3 mm and 0.5 mm.
22-32
Check resistance of the tield coil.
Fisld Coil Rosistance: 3.6 t 0.2 ohm at 68"F {20'C)
lf resistance is not within specifications, replace the
field coil.
