Page text (OCR transcript)
ON-VEHICLE INSPECTION
1. CHECK CONDENSER FINS FOR BLOCKAGE OR DAMAGE
If the fins are clogged, clean them with pressurized water.
CAUTION: Be careful not to damage the fins.
[DIAGRAM: Shows Nippondenso and Borroughs condenser configurations with labeled components]
2. 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:
New belt 180 ± 20 lb
Used belt 105 ± 10 lb
NOTE:
• "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.
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 refrigerant is needed. (See page AC-11)
8. IF NO OR INSUFFICIENT COOLING, INSPECT FOR LEAKAGE
Using a gas leak tester, inspect each component of the refrigeration system. (See page AC-11)
