Subaru 1600 Service Manual page 552

HEATING, VENTILATING AND AIR-CONDITIONING SYSTEM
2. On-car Services
1) Mode Lever
Check
Check air leakage as follows.
1) Start the engine and set tempera-
ture control dial to COLD position.
Then set fresh air ventilation lever
of OFF position.
2) Then check air leakage after
switching on the fan to the fourth
step.
i) A/C position
a. With mode lever at this posi-
tion, outside air is directed
to compartment only from
center and side air outlets.
If leakage exceeds 0.5 m/sec (1.6
ft/sec) through lower outlet or
more than 0.8 m/sec (2.6 ft/sec)
through DEF nozzle, it is neces-
sary to adjust control system.
To center
outlet
outlet
If air leakage exceeds 0.5 m/sec (1.6 ft/secl.
adjust control system.
A23-078
Fig. 13-5 Leakage at lower outlet
b _ Use the following simple method
for checking air leakage.
Hold a lighted cigarette near air
outlet. If stream of cigarette
smoke flows in the
dire~tion
of
outlet air, air leakage of at least
0.3 m/sec (1.0 ft/sec) is present.
~":/
I~rc""'~
less than
0.3 m/sec (1.0 ft/secl
0.3 - 0.5 m/sec
(1.0 - 1.6 ft/secl
A23-079
Fig. 13-6 Simple methods for
measuring leakage
ii) HEAT position
With mode lever in this position,
most of outside air is directed
through lower air outlets, with
air also discharged from defrost-
er nozzle at a speed of 1 to 2
m/sec (3 to 7 ft/sec) into com-
partment.
If leakage exceeds
OJ
m/sec (1.0
ft/sec) through center or side
outlets, adjust control system.
iii) DEF position
With mode lever in this posi-
tion, air is discharged only from
defroster nozzle. If leakage ex-
ceeds 0.5 m/sec (I.6 ft/sec)
through lower outlet or OJ
m/sec (1.0 ft/sec) through center
and side outlets, adjust the
control system.
Adjustment
1) Remove luggage shelf on the pas-
senger's seat side.
2) Remove right defroster duct from
heater unit.
3) Disconnect the cable from the
clamp at heater unit.
Push
1 Cable
2 Clamp
A23-080
Fig. 13-7 Disconnecting the cable
4) Set mode lever to CIRC position.
S) Set the linkage at the heater unit
side to CIRC position. (Pulling lever B
up backward)
eiRe
Fig. 13-8 Setting the lever
13-7
6) After connecting the cable to
lever
B,
connect the cable to the clamp
while pulling the cable up backward.
Standard
Value F
1 Cable
2 Oamp
3 Lever B
48 mm (1.89 in)
eiRe
and
~
upper, \
48mm (1.89inl
A23-072
Fig. 13-9 Connecting the cable'
7) Disconnect defroster shutter shaft
from plastic clamp at lever D.
A23-081
1 Shaft
2 Lever D
3 Clamp
Fig. 13-10 Disconnecting the shaft
8) Connect the shaft to plastic clamp
at the lever D while pulling the shaft
up backward.
A23-082
Fig. 13-11 Connecting the shaft
9) Install defroster duct.