VEHICLE HEATER/AIR CONDITIONER UNIT REPLACEMENT (CONT)
ON CAB FLOOR (23) REMOVE SEALANT
(24) FROM AROUND DRAIN TUBES (22)
AND REMOVE DRAIN TUBES.
Use care to prevent refrigerant from touching
your skin or eyes, because liquid refrigerant,
when exposed to air, quickly evaporates and will
freeze skin or eye tissue. Serious injury or
blindness could result if you come in contact with
Water and dirt can damage the refrigerant
system. Five minutes of not being capped is the
limit for any hose or component. Do not blow
shop air through the refrigerant hoses; shop air is
Do not disconnect or connect
refrigerant fittings using only one
wrench. Hold one fitting in place
using a wrench, and turn the other
fitting with a second wrench.
REMOVE INSULATING TAPE FROM
EXPANSION VALVE (25). DISCONNECT
TWO REFRIGERANT LINES (26) FROM
CAP EXPANSION VALVE (25) AND
REFRIGERANT LINES (26).
25-40 Change 1