Compressor On-Vehicle Inspection - Toyota Hilux Surf 1993 Owner's Manual

AIR CONDITIONING SYSTEM
5. CONNECT STOP VALVES TO SERVICE VALVES
Tighten the nuts by hand.
CAUTION:
• Do not connect the wrong valves to the high pressure
and the low pressure sides.
• To prevent loosening the nuts, do not apply compres–
sor oil to seat of the connection.
6. OPEN HAND VALVES OF BOTH STOP VALVES
REMOVAL OF MANIFOLD GAUGE SET
1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
2. CLOSE HAND VALVES OF BOTH STOP VALVES
3. DISCONNECT STOP VALVES FROM SERVICE VALVES
ON REFRIGERANT LINE
4. INSTALL CAPS TO SERVICE VALVES
COMPRESSOR
ON–VEHICLE INSPECTION
1. INSTALL MANIFOLD GAUGE SET
(See page AC–16)
2. RUN ENGINE AT APPROX. 1,500 RPM
3. CHECK COMPRESSOR FOR FOLLOWING:
(a) High pressure gauge reading is not low and low
(b) Metallic sound
(e) Leakage from shaft seal
4. CHECK MAGNETIC CLUTCH
(a) Inspect the pressure plate and the rotor for signs of
(b) Check the clutch bearings for noise and grease
(c) Using an ohmmeter, measure the resistance of
Standard resistance: 3.6
If resistance value is not as specified, replace the
coil.
– Compressor
pressure gauge reading is not higher than normal.
If defects are found, repair the compressor.
oil.
leakage.
the stator coil between the clutch lead wire and
ground.
±
0.2 Ω at 200C (680F)
AC–17