Categories
Heating, Ventilation and Air Conditioning

nsxb22083a.pdf

Replacement
1. If the compressor still works, run the engine at idle
for a few minutes with the A/C on, then shut the
engine off and disconnect the negative cable from
the battery.
2. Recover the refrigerant using a R-134a refrigerant
Recovery/Recycling/Charging System. (see page
22-73).
3. Disconnect the compressor connector.
COMPRESSOR
CONNECTOR
4. Raise the car on a hoist. Make sure it’s properly
supported (see section 1).
5. Remove the front beam (see section 5).
6. Disconnect the suction and discharge hoses from the
compressor. Cap the open fittings immediately to
keep moisture and dirt out of the system.
DISCHARGE HOSE
SUCTION
HOSE
8 x 1.25 mm
30 N-m
(3.0 kg-m,
22 Ib-ft)
7. Loosen the idler pulley center nut and adjusting bolt,
then remove the belt from compressor.
ADJUSTING BOLT
12 N-m (1.2 kg-m,
9 Ib-ft)
IDLER PULLEY CENTER
NUT
45 N-m (4.5 kg-m,
33 Ib-ft)
8. Remove the four mounting bolts and compressor.
COMPRESSOR
MOUNTING BOLTS
8 x 1.25 mm
25 N-m (2.5 kg-m,
18 Ib-ft)

Compressor
Replacement (cont’d)
9, If necessary, remove the one bolt from the idler
pulley bracket, then remove the four mounting
bolts and the compressor bracket.
10 x 1,25 mm
50 N·m (5.0 kg-m,
36 Ib-ft)
IDLER PULLEY
BRACKET BOLT
COMPRESSOR
BRACKET
10 x 1.25 mm
50 N·m (5.0 kg-m,
36 Ib-ft)
10. If necessary, remove the two other bolts in the idler
pulley assembly.
IDLER PULLEY
ASSEMBLY
Check the idler pulley bearing for play and drag.
Replace it with a new one if it’s noisy or has ex-
cessive play or drag.
46 N·m (4.5 kg-m.
33 Ib-ft)
11. Install the compressor in the reverse order of
removal; and:
If you’re installing a new compressor, drain all
the refrigerant oil out of the old compressor and
measure its volume. Subtract the volume of old
Oil from 140 CC (4-2/3 floz); the result is the
amount of oil you should drain from the new
compressor (through the section fitting).
Replace 0-rings with new ones at each fitting,
and apply refrigerant oil to them.
NOTE: Be sure to use the right 0-rings for
R-134a to avoid leakage.
Use (ND-OIL 8) oil for R – 134a Nippondenso
piston type compressors only.
Do not return the oil to the container once
dispensed and never mix with other refrigerant
oils to avoid contamination.
Immediately after using the oil, replace the cap
on the container and seal it to avoid moisture
absorption.
Do not spill the refrigerant oil on the car; it may
damage the paint; if the refrigerant oil contacts
the paint, wash it off immediately.
12. Adjust the compressor belt (see page 22-88).
After adjusting the belt, tighten the idler pulley
center nut.
Then tighten the adjusting bolt securely,
13. Charge the system (see page 22-91).
14. Test system performance (see page 22-70).

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