Subaru XT 1988 Service Manual page 1046

4-7
AIR CONDITIONING SYSTEM
2) V-belt
(1) Loosen belt tension pulley lock nut.
(2) Turn adjusting bolt to adjust belt tension. The belt
tightens when the bolt is turned clockwise and vice versa.
Lock nut
!C
Adjusting bolt
Fig. 30
Tensioner
pulley
~
H: mm (in)/98 N
(10 kg, 22 Ib)
New belt
5.5 - 6.5
(0.217 - 0.256)
Existing belt
6.5 -
1'.s
(0.256 - 0.295)
(3) Tighten lock nut.
Tightening torque:
98 N 110 kg. 22 Ib)
L4-1529
Tension:
N (kg, Ib)
637 - 736
(65 -75,143 -165)
441 - 637
(45 - 65, 99 - 143)
34 - 44 N'm (3.5 - 4.5 kg-m, 25 - 33 ft-Ib)
(4) After adjusting belt tension, turn adjusting bolt
counterclockwise to lock.
Tightening torque:
4 - 6 N·m (0.4 - 0.6 kg-m, 2.9 - 4.3 ft-Ib)
B.
When replacing belt with a new one, adjust its tension to
the specification, then readjust it to the same specification
after running engine for 5 minutes in consideration of its
initial expansion.
•
-t
Wrong
Connect
Wrong
L4-1530
Fig. 31 Confirming pulley alignment
a. The V-belt should not be too tight or too loose.
A belt which is too tight may break bearing or cause gas to
leak from the shaft seal. A belt which is too loose slips, there-
by causing the belt cut.
b. After completing the compressor installation and testing
the system operation, check and adjust the tension of both
V-belts again.
3) Low-pressure hose (Flexible hose PsI
Connect low-pressure hose with compressor.
4)
High-pressure hose (Flexible hose Pd)
Connect high-pressure hose with compressor.
Tightening torque:
Low- and High-pressure hoses:
15 - 25 N'm (1.5 - 2.5 kg-m, 11 - 18 ft-Ib)
b. Ensure that the V-belt is aligned correctly. If it is not,
Fig.
32
check for loose bolts.
Be sure to apply compressor oil to the periphery of O-ring.
5) Pulser
(1) Install pulser onto the compressor.
Tightening torque:
15 - 25 N·m (1.5 - 2.5 kg-m, 11 - 18 ft-Ib)
24