Removal Of Manifold Gauge

1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE

2. CLOSE HAND VALVES OF BOTH STOP VALVES

3. DISCONNECT STOP VALVES FROM SERVICE VALVES

ON REFRIGERANT LINE

4. INSTALL PLUGS TO SERVICE VALVES

CORRECT

WRONG

CI'CtHM

CI'CtHM

ON-VEHICLE INSPECTION

1. CHECK CONDENSER FINS FOR BLOCKAGE OR

DAMAGE

If the fins are clogged, clean them with pressurized water. NOTICE: Be careful not to damage the fins.

2. MAKE SURE THAT DRIVE BELT IS INSTALLED

CORRECTLY

After installing the drive belt, check that it fits properly in the ribbed grooves.

3. CHECK DRIVE BELT TENSION

Using a belt tension gauge, check the drive belt tension. Belt tension gauge:

Nippondenso BTG-20 (95506-00020) or Borroughs No.BT-33-73F Drive belt tension:

Engine

New belt (Ib)

Used belt (Ib)

4A-FE

1BO è ¡5

100 ± 20

5S-FE

1GS ± 10

110 4 10

3S-GTE

1Ç5 ±. 1Û

• "New belt" refers to a belt which has been used less than 5 minutes on a running engine.

• "Used belt" refers to a belt which has been used on a running engine for 5 minutes or more.

4. START ENGINE

5. TURN ON A/C SWITCH

Check that the A/C operates at each position of the blower switch.

6. CHECK MAGNETIC CLUTCH OPERATION

If magnetic clutch does not engage, check the A/C fuse.

7. CHECK THAT IDLE INCREASES

When the magnetic clutch engages, engine revolution should increase.

Standard idle-up rpm: 900 -1,000 rpm

8. CHECK CONDENSER FAN MOTOR ROTATES

9. CHECK AMOUNT OF REFRIGERANT

If you can see bubbles in the sight glass, additional refrigerant is needed. (See page AC-19)

10. IF NO COOLING OR IT IS INSUFFICIENT, INSPECT

FOR LEAKAGE

Using a gas leak tester, inspect each component of the refrigeration system.

INSPECTION OF REFRIGERATION SYSTEM WITH MANIFOLD GAUGE SET

This is a method in which the trouble is located by using a manifold gauge set. (See "Installation of Manifold Gauge Set" on page AC-20.) Read the manifold gauge pressure when the following conditions are established:

(a) Temperature at the air inlet with the switch set at RECIRC is 30 - 35°C (86 - 95°F)

(b) Engine running at 2,000 rpm

(c) Blower fan speed control switch set at high speed

(d) Temperature control switch set at max. cool side

HINT: It should be noted that the gauge indications may vary slightly due to ambient temperature conditions. NOTICE:

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