Saab 900 Service Manual page 71

Heating and ventilation system, air conditioning system 854-59
To change the anti-frosting ther-mostat,
as from the 1981 models
1 Remove the large rubber grommet in .the
right-hand side of the bulkhead.
2 Withdraw the capillary tube from the cooling
fins of the evaporator.
3 Remove the thermostat retaining nut inside
the air intake box.
4 Remove the thermostat through the hole in
the right-hand side of the bulkhead and dis-
connect the cables.
Refit in the reverse order.
Note the location of the capillary tube in the
evaporator.
Location of the capillary tube, 1981- 83
models
In the event of frosting problems on the
evaporator, try to solve the problem by locating
the capillary tube as described below.
Carefu Ily withdraw the capi lIary tube and fit it as
shown in the drawing.
Wrap a piece oftape 130 mm from the end ofthe
capillary tube, so that the correct length will be
inserted into the evaporator.
Check that the capillalytube is clear ofthe recir-
culation damper.
If the new location does not solve the frosting
problem, fit a new anti-frosting thermostat.
Note: This location cannot be used on certain
1981 model cars, in which the end wall of the
evaporator is covered with integral foam. The lo-
cation recommended earlier should be used on
these cars (see the Service Manual). In the event
of frosting problems, fit a new anti-frosting ther-
mostat.
Location of the capillary tube, 1981- 83 models
I
Saab 900