Air Conditioning System On-Vehicle Inspection - Toyota Hilux Surf 1993 Owner's Manual

AIR CONDITIONING SYSTEM
ON–VEHICLE INSPECTION
7. CHECK CONDENSER FINS FOR BLOCKAGE OR
DAMAGE
If the fins are clogged, clean them with pressurized wa–
ter.
NOTICE: Be careful not to damage the fins.
2. CHECK DRIVE BELT TENSION
Using a belt tension gauge, check the drive belt tension.
Belt tension gauge:
Drive belt tension:
3VZ
22R–E
HINT:
• "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.
3. START ENGINE
4. TURN ON A/C SWITCH
Check that the A/C operates at each position of the
blower switch.
If blower does not operate, check heater fuse.
5. CHECK MAGNETIC CLUTCH OPERATION
6. CHECK THAT IDLE INCREASES
When the magnetic clutch engages, engine revolution
should increase.
Standard idle–up rpm: 900 – 1,000 rpm
7. CHECK AMOUNT OF REFRIGERANT
If you can see bubbles in the sight glass, additional refrig–
erant is needed. (See page AC–16)
8. IF NO COOLING OR IT IS INSUFFICIENT, INSPECT FOR
LEAKAGE
Using a gas leak tester, inspect each component of the
refrigeration system.
– On–Vehicle Inspection
Nippondenso BTG–20 (95506–00020) or
Borroughs No. BT–33–73F
New belt (lbs)
AC–15
Used belt (Ibs)