Toyota T100 1996 Service Manual page 1974

Sight Glass
Item Symptom
1 Bubbles present in sight glass
2 No bubbles present in sight glass
No temperature difference between com-
3
pressor inlet and outlet
Temperature between compressor inlet and
4
outlet is noticeably different
Immediately after air conditioning is turned
5
off, refrigerant in sight glass stays clear
When air conditioning is turned off, refriger-
6
ant foams and then stays clear
*: Bubbles in the sight glass with ambient temperatures higher than usual can be considered normal if cooling
is sufficient.
1996 TOYOTA T100 (RM449U)
AIR CONDITIONING − AIR CONDITIONING SYSTEM
ON−VEHICLE INSPECTION
1. INSPECT REFRIGERANT VOLUME
Observe the sight glass on the liquid tube.
Test conditions:
N06110
Amount of refrigerant
Insufficient*
None, sufficient or too much
Empty or nearly empty
Correct or too much
Too much
Correct
Running engine at 1,500 rpm
S
Blower speed control switch on "HI" position
S
A/C switch ON
S
Temperature control dial on "COOL" position
S
Fully open the doors
S
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
Refer item 3 and 4
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
Refer to items 5 and 6
(1) Discharge refrigerant
(2) Evacuate air and charge proper amount
of purified refrigerant
AC−3
AC0EX−02
Remedy
−