Subaru XT 1988 Service Manual page 1045

AIR CONDITIONING SYSTEM
4-7
Compressor
4) High-pressure hose (Flexible hose Pd)
The MJS-170 compressor employs an oil-mist jet system in
Plug the opening to prevent foreign matter from getting in.
which some lubricant is mixed in the refrigerant and the mix-
ture is sprayed directly to the sliding portions from the com- 5) Low-pressure hose (Flexible hose PsI
pressor suction side.
COMPRESSOR CLUTCH
The most likely source of problem is clutch slippage_ Factors
are listed here. Exercise ample care.
1)
Clearance between clutch hub and pulley should be within
specifications at all peripheral points.
Clearance: mm (in)
0.5 - 0.8 (0.020 - 0.031)
2) Make sure that there is no oil or dirt on friction surfaces
of clutch disc (clutch hub) and pulley. Remove any oil or dirt
with a dry rag.
3) Make sure that terminal voltage at magnetic coil is above
10.5 V.
REMOVAL
•
1) Battery negative terminal
2) Pulser (pulser and compressor connector)
3) Discharge refrigerant using manifold gauge
(1) Fully close low-pressure valve of manifold gauge.
(2) Connect low-pressure charging hose of manifold
gauge to low-pressure service valve.
(3) Slightly open low-pressure manifold gauge valve and
slowly discharge refrigerant from system.
Do not allow refrigerant to rush out. Otherwise, compressor
oil will be discharged along with refrigerant.
Fig. 27
23
Plug the opening to prevent foreign matter from getting in.
6) V-belt (Refer to Chapter 2-2 "Oil Pump Assembly.")
7) Remove compressor and compressor upper bracket.
Fig. 28
INSTALLATION
1 ) Compressor
Tighten compressor mounting bolts in numerical sequence, as
shown in figure below, to specified torque.
Fig.
29
*1:
L4-1528
Tighten this bolt with your fingers until it stops go. Tighten all
other bolts and then this bolt to specified torque.
When tightening this bolt, be careful because it has a coarse·
thread pitch.
Tightening torque:
Compressor mounting bolt:
34 - 44 N·m (3.5 - 4.5
kg-m,
25 - 33 ft-Ib)