A/C System Service
Pressure Test Chart
NOTE: Performance Test is on page 22-56.
Test resultsRelatad symptomsPrcbable caus€Remody
Discharge (high)pressure 6bnormallyhagh
After stopping compressor, pressuredrops to about 200 kPa 12.0 kgtlcm,,28 psi) quickly, and then lalls gradualty.
Air in systemDischarge, evacuate, and rechargewith specified amount.Evacuation: see page 22-60Charging: see page 22-61No bubbles in sight glass whencondenser is cooled by waterExcessive refrigerant in systemDischarge, evacuate, and rechargewith specilied amount.Reduced or no air flow throughcondenser. Clogged condenser or radia-tor fins. Condenser or radiator fannot wo.king properly
CleanCheck voltage and fan rpm.Check fan direction.
Line to condensor is excossivelv hot.Restricted flow of relrigerant insy$emFestricted lines
Discharge pressureabnormally lowExcessive bubbles in sight glass;condenser is not hot.Insufficient retrigerant inCheck for leak.Charge system.High and low pressures are balancedsoon after stopping compressor. Lowside is higher than normal.
. Faulty compressor discharge
. Faulty compressor seal
Replace the comprossor.
Outlet ot expansion valve is notfrosted, low-pressure gauge indicates
' Faulty expansion valve. Moisture in system. Replace. Discharge, evacuate, andrecharge with specified amount.Suction {low) pros,sure abnormallyExcessive bubbles in sight glass;condenser is not hot.Insufficiont relrigerant inRepair the leaks.Discharge, evacuate, andrecharge with specified amount.Charge as r€quired.Expansion valve is not frosted, andlow-pressure line is not cold. Low-pressure gauge indicates vacuum.
' Frozen expansion valvelMoisture in system). Faulty expansion valve
. Discharge, evacuate, andrecharge with specitied amount.. Replace th€ expansion valve.Discharge temperature is low, and theair llow trom vents is restricted.Frozen evaporatorRun the fan with compressor off,then check evaporator tempera,ture sensor.Expansion valve is frosted.Clogged expansion valveClean or replace.Feceiver/dryer outlet is cool, and inlotrs w6rm (should be warm duringoperation).
Clogged receiver/dryerReplace
Suction pressureabnormally highLow-pressure hose and check joint arecooler than tho temperature aroundevaporator.
. Expansion valve open too long. Loose expansion capillarytube
Repair or roplace.
Suction pressure is lowored whencondenser is cooled by water.Excessive refrigerant in systemDischarge, evacuate, and rechargewath specified amount.High and low-pressure are equalizedas soon as tho compressor is stopped,and both gauges tluctuate whilerunning.
Faulty gasketFaulty high-pressure valveForeign panicle stuck in high-
Replace the compressor.
Slction and dis,charge pressutesabnormally high
Reduced air flow through condens€r,. Clogged condenser orradiator tins. Condenser or radiator fannot working properly
CleanCheck voltage and fan rpm.Check Ian direction.
No bubbles in sight glass whencondenser is cooled by walerExcessive refrigerant jn systemDischarge, evacuate, and rechargewith specified amount.Suction and dis-charge pressureabnormally low
Low-pressure hose and motalendareas are cooterlhan evaporator.Clogged or kinked low-pressure hose pansRepair or replace.
Temperature around expansion valvers too low compared with that aroundClogged high-pressure lineRepair or replace.
Refrigerant leaksCompressor clutch is diny.Compressor shaft seal leakingReplace the compressor.Compressor boltls) are dirty.Leaking around bolt(s)Tighton bolt{s) or replacecompressor.Compressor gasket is wet with oil.Gasket leakingReplace the compressor,
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Charging
Use only service equipment that is U.L.-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a (R-134a) from the air conditioner system.
CAUTION: Exposure to air conditioner refrigerant and
lubricant vapor or mist can irritate eyes, nose and
throat. Avoid breathing th€ air conditioner refrigerant
and lubricant vapor or mist.
lf accidental system discharge occurs, ventilate work
area before resuming service. Additional health and
safety information may be obtained from the relrigerant
and lubricant manufacturers.
Connect a R-'134a refrigerant recovery/recycling/charging
station to the vehicle, as shown. following the equipment
manufacturer's instructions.
R€covery/Recycling/Charging Station
HIGH-PRESSURESIDE
Add the same amount of new refrigerant oil to system
that was removed during recovery. Use only SP-'10
refrigerant oil.
Charge the system with Required amount of R-134a
refrigerant. Do not overcharge the system; the compres-
sor will be damaged.
Select the appropriate unit of measure for your
charging station.
Refrigerant capacity: 700 to 750 g
0.70 to 0.?5 k9
1.5 to 1.6 lbs.
21.7 to 26.5 oz.
ll-
22-61
Leak Test
Use only service equipment that is U.L.-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a (R-134a) from the air conditioner system.
CAUTION: Exposure to air conditionor refrigerant and
lubricant vapor or mist can irritate eyes, nose and throat.
Avoid breathing the air conditioner retrigerant and lubri-
cant vapor or mist.
lf accidental system discharge occurs, ventilate work
area before resuming service.
R-134a service equipment or vehicle ajr conditioner sys-
tems should not be pressure tested or leak tested with
compressed arr.
!@ some mixturos of air and R-1348 have
been shown to be combustible at olovatod pres3uras
and can result in fire or explosion causing iniury or
property damage. Never use comprelised air to pressure
test R-13ila service equipment or vehicle air conditioner
systems.
Additional health and safety information may be obtained
from the refrigerant and lubricant manufacturers.
2.
1.Connect a R-134a refrigerant recove rylrecycling/
charging station to the vehicle, as shown in the pre-
vious column, following the equipment manufactur-
er's instructions.
Open the high-pressure valve to charge the system
to the specified capacity, then close the supply
valve, and remove the charging system couplers.
Select the appropriate unit of measure for your
charging station.
Refrigerant capacity: 700 to 750 g
0.70 to 0.75 kg
1.5 to 1.6 lbs.
21.7 to 26.5 oz.
Check the system for leaks using a R-134a refriger-
ant leak detector with an accuracy of 14 g (0.5 ozl
per year or better.
lf you find leaks that require the system to be opened
(to repair or replace hoses, fittings, etc.), recover the
system according to the Recovery Procedure on page
22-59.
After checking and repairing leaks, the system must
be evacuated (see System Evacuation on page 22-601.
5.
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8. Remove the mounting bolts and the compressor.
E x 1.25 mm2a N.m (2.,1kgf.m, l7 lbl.ft)
lf necessary, remove the compressor bracket as fol-
lows.
. Remove the nut and the washer from the left
front mount. When tightening the nut to the left
front mount, make sure the washer is set proper-
ly on the left front mount as shown.
. Remove the mounting bolts and the compressor
bracket.
q
12 x 1.25 mm
59 N.m (6.0 kgt'm,
10 x 1,25 mmart N.m (4.5 kgf'm, 33 lbfftl
11.
10. Check the idler pulley bearing for play and drag,
and replace it with a new one if it's noisy or has
excessive play or drag.
lnstall in the reverse order of removal. Make note of
the following items,
. lf you're installing a new compressor, drain all the
reJrigerant oil from the removed compressor, and
measure its volume. Subtract the volume of
drained oil trom 130 m/ 14 U3 fl'o2,4.6 lmp'oz);
the result is the amount of oil you should drain
lrom the new compressor (through the suction fit-
trngl.
. Replace the O-rings with new ones at each fit-
ting, and apply a thin coat o{ refrigerant oil
before installing them. Be sure to use the right
O-rings for HFC-134a (R-134a) to avoid leakage.
. Use refrigerant oil (SP-10) for R-134a KEIHIN spi-
ral type compressors only.
. To avoid contamination, do not return the oil to
the container once dispensed, and never mix it
with other refrigerant oils.
. lmmediately after using the oil, replace the cap
on the container. and seal it to avoid moisture
aDsorprlon.
. Do not spill the refrigerant oil on the vehicle; it
may damage the paint; if the retrigerant oil con-
tacts the Daint, wash it off immediately.
. Adjust the Ay'C compr'essor b€lt (see psge 22-69)
and the power steering pump belt {see section
17t.
. Charge the system (see page 22-611, and test its
performance (see page 22-56]-.
IDLER PULLEY
+r N.m 14.5 kgt m,33lbf ftl
PIVOT BOLT10 x 1.25 mmir4 N.m {4.5 kgt m, 33 lbl'ft}BBACKET
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Clutch Inspection
Check the plated parts of the armature plate for color
changes, peeling or other damage. lf there is dam-
age, replace the clutch set.
Check the rotor pulley bearing play and drag by rotat-
ing the rotor pulley by hand. Replace the clutch set
with a new one if it is noisy or has excessive play/drag.
Measure the clearance between the rotor pulley and
the armature plate all the way around. lf the clear-
ance is not within specified limits, the armature plate
must be removed and shims added or removed as
required, following the procedure on page 22-66.
Cloarance: 0.5 t 0.15 mm {0.020 t 0.q)6 in)
NOTE: The shims are available in four thicknesses:
0.1 mm. 0.2 mm. 0.4 mm and 0.5 mm
ABMATUBE
ROTOR
. Release the field coil connector from the holder, then
disconnect it. Check the thermal protector for conti-
nuity, lf there is no continuity, replace the thermal
prorecror.
NOTE: The thermal protector will have no continuity
above 251.6 to 262.4"F 1122 to 128"C). When the tem-perature drops below 240.8 to 219.8"F (116 to 104'C),
the thermal protector will have continuity.
Check resistance of the field coil.
Field Coil Resistance: 3.2 i 0.15 ohms at 68"F {20'C)
lf resistance is not within specifications, replace the
field coil.
22-65
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l-
5. Remove the bolt and holder, and screw and clamp.
then disconnect the field coil connector. Remove
the snap ring A with snap ring pliers, then remove
the field coil. Be careful not to damage the field coil
and comoressor.
FIELD COIL
CLAMP
HOLDER
GROUNDTERMINAL
7,a N.m
10.75 kgt'm,5 tbt ftl
6. Position the rotor pulley squarely over the field coil.
Press the rotor pulley onto the compressor boss
with the special tool. lf the rotor pulley does not
press on straight, remove it, and check the rotor
pulley and compressor boss for burrs or damage.
CAUTION: Maximum pre3s load: 39,200 kPa
(400 kgf/cm,, 5,690 psi)
Press
+
HUB ASSEMBLYGUIDE ATTACHMENT07966 - 6920500
7.
ROTORPULLEY
Reassemble the comDressor clutch in the reverse
order of disassembly. Make note of the following
rrems.
Install the field coil with the wire side facing down,
and align the boss on the tield coil with the hole in
the compressor.
Clean the rotor pulley and compressor sliding
surfaces with non-oetroleum solvent.
lnstall new snap rings A and B.
Make sure the snap rings are fully seated in the
groove.
Make sure that the rotor pulley turns smoothly
after it's reassembled.
Route and clamp the wires properly or they can
be damaged by the rotor pulley.
a
a
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Precautions/Procedures
)General Precautions
Carefully inspect any SRS part before you install it.
Do not install any part that shows signs of being drop-
ped or improperly handled, such as dents, cracks or
deformation:
- Airbags- Cable reel- SRS unit- Seat belt tensioners
N
)-
Use only a digital multimeter to check the system, lf
it's not a Honda multimeter, make sure its output is
10 mA (0,01 A) or less when switched to the smallest
value in the ohmmeter range. A tester with a higher
output could damage the airbag circuit or cause acci-
dental deployment and possible injury.
Do not install used SRS Dans from another vehicle,
When making SRS repairs, use only new pans.
Except when performing electrical inspections,
always disconnect both the negative cable and posi-
tive cable from the batterv. and wait at least three
minutes before beginning work.
Replacement of the combination light and wiper/
washer switches and cruise control switch can be
done without removing the steering wheel:
- Combination light and wiper/washer switch replace-
ment {see section 231.- Cruise control sevresume switch replacement (see
section 41.
Whenever the ignition switch is ON {ll}, or has been
turned OFF for less than three minutes, be careful not
to bump the SRS unit; the airbags could accidentally
deploy and cause damage or injuries.
Whenever the airbag has been activated, replace the
SRS unit.
The original radio has a coded theft protection circuit.
Be sure to get the customer's code number before dis-
connecting the battery cables.
)
Airbag/Seat Belt Tensioner
Handling and Storage
Do not try to disassemble an airbag or a seat belt ten-
sioner. They have no serviceable parts. Once an airbag
or a seat belt tensioner have been deployed. they cannot
be repaired or reused.
For temporary storage of an airbag or a seat belt ten-
sioner during service, please observe the following pre-
cautons:
. Store the removed airbag with the pad surface up.
The driver's/front passenger's airbag connectors and
seat belt tensioner connectors have a built-in short
contact (see page 24-211.
@ r th€ airb.g is impropcrty stor€d face down,
accidental deployment could propel the unit with enough
forc€ to caus6 serious iniury,
Store the removed on a secure flat surface awav from
any high heat source (exceeding 212"F/100'C) and
free of any oil, grease. detergent or water.
lmproper handling or storage can internally damage
the airbag and seat belt tensioner. making them inop-
erative.
lf you suspect the airbag and seat belt tensioner have
been damaged, install new units and refer to the
Deploymenvoisposal Procedures for disposing of the
damaoed units.
AIRBAG CONNECTORS
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