Jeep 1979 CJ-5 Technical & Service Manual page 828

AIR CONDITIONING 3E-17
System Troubleshooting
P R E L I M I N A R Y
D I A G N O S I S
C O N T R O L S
Check A d j u s t m e n t s
A I R L E A K S
Check
# V e n t s
# D o o r seals
# W i n d o w seals
M A G N E T I C C L U T C H
Refer t o Magnetic
C l u t c h T r o u b l e s h o o t i n g
Charts
BLOWER
Check at all
speeds
A I R D I S C H A R G E
C O N N E C T I N G DUCTS
Check for seal leaks and
a l i g n m e n t
R E F R I G E R A T I O N
S Y S T E M
D I A G N O S I S
C H E C K D I S C H A R G E A I R T E M P E R A T U R E
•
Set t h e r m o s t a t at m a x cool
•
Set engine speed at 1 5 0 0 r p m
•
C h e c k discharge air t e m p e r a t u r e w i t h
t h e r m o m e t e r
•
Discharge air t e m p e r a t u r e must cor-
respond t o a m b i e n t air t e m p e r a t u r e
as s h o w n in N o r m a l O p e r a t i n g T e m p -
eratures a n d Pressures Chart
S y s t e m cools
a n d cycles
p r o p e r l y
S y s t e m does
not cool or
cycle
Install gauges a n d
check pressures
t o diagnose p r o b -
l e m . See Pressure
Diagnosis Chart t o
c o r r e c t .
S y s t e m cycles
but at incorrect
t e m p e r a t u r e
Cools and cycles
p r o p e r l y
Check t h e r m o s t a t
capillary t u b e f o r
proper i n s t a l l a t i o n .
Install correctly a n d
recheck discharge
air t e m p e r a t u r e .
System cycles
but at incorrect
t e m p e r a t u r e
Road test t o verify proper o p e r a t i o n
Replace
t h e r m o s t a t
7 0 5 2 6