Nissan Frontier. Instruction — part 854
HA-8
< PRECAUTION >
PRECAUTIONS
The oil contained inside the vacuum pump is not compatible with the
specified oil for HFC-134a (R-134a) A/C systems. The vent side of
the vacuum pump is exposed to atmospheric pressure so the vac-
uum pump oil may migrate out of the pump into the service hose.
This is possible when the pump is switched off after evacuation (vac-
uuming) and hose is connected to it.
To prevent this migration, use a instruction valve situated near the
hose-to-pump connection, as follows.
• Usually vacuum pumps have a instruction isolator valve as part of the
pump. Close this valve to isolate the service hose from the pump.
• For pumps without an isolator, use a hose equipped with a instruction
shut-off valve near the pump end. Close the valve to isolate the
hose from the pump.
• If the hose has an automatic shut off valve, disconnect the hose
from the pump: as long as the hose is connected, the valve is open
and oil may migrate.
Some one-way valves open when vacuum is applied and close
under a no vacuum condition. Such valves may restrict the pump's
ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
Be certain that the gauge face indicates HFC-134a (R-134a). Make
sure the gauge set has 1/2
″-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) along with specified oil.
SERVICE HOSES
Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut-
off devices (either instruction or automatic) near the end of the hoses
opposite the manifold gauge.
SERVICE COUPLERS
RHA270D
SHA533D
RHA272D
PRECAUTIONS
HA-9
< PRECAUTION >
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
Do not attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. If an improper
connection is attempted, discharging and contamination may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC134a (R-134a) and specified
oils have been used with the scale. If the scale controls refrigerant
flow electronically, the hose fitting must be 1/2”-16 ACME.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder's top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Shut-off valve rotation
A/C service valve
Clockwise
Open
Counterclockwise
Close
RHA273D
RHA274D
HA-10
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000009478575
The actual shape of the tools may differ from those illustrated here.
HFC-134a (R-134a) Service Tool and Equipment
INFOID:0000000009478576
Do not mix HFC-134a (R-134a) refrigerant and/or the specified oil with CFC-12 (R-12) refrigerant and/or the
oil.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/oil.
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or oil) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed
use of the refrigerants/oil.
Adapters that convert one size fitting to another must not be used refrigerant/oil contamination will occur and
compressor malfunction will result.
Tool number
(TechMate No.)
Tool name
Description
—
(J-41425-NIS)
AL Tubing Repair Kit
Repairing leaks in A/C tubes
—
(J-38873-A)
Drive plate installer
Installing pulley
KV99233130
(J-29884)
Pulley puller
Removing pulley
—
(J-44614)
A/C Comp Clutch Wrench
Clutch disc holding tool
ALIIA0390ZZ
WJIA0367E
LHA172
ALIIA0971ZZ
PREPARATION
HA-11
< PREPARATION >
C
D
E
F
G
H
J
K
L
M
A
B
HA
N
O
P
Tool number
(TechMate No.)
Tool name
Description
—
( — )
HFC-134a (R-134a) Refrigerant
Container color: Light blue
Container marking: HFC-134a (R-134a)
Fitting size: Thread size
• large container 1/2”-16 ACME
—
( — )
NISSAN A/C System Oil Type R
Type: Poly alkylene glycol oil (PAG), type
R
Application: HFC-134a (R-134a) vane ro-
tary compressors (NISSAN only)
Lubricity: 40 m (1.4 US fl oz, 1.4 Imp fl
oz)
—
(J-48710)
NISSAN ACR2009 RRR Unit
Refrigerant Recovery and Recycling and
Recharging
—
(J-41995)
Electronic refrigerant leak detector
Power supply:
• DC 12V (battery terminal)
—
(J-43926)
A/C Leak Detection Kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
Refrigerant dye injector
(J-41447)
HFC-134a (R-134a) Fluorescent leak de-
tection dye (box of 24, 1/4 ounce bottles)
(J-43872)
Refrigerant dye cleaner
Power supply:
• DC 12V (battery terminal)
—
(J-39183-C)
Manifold gauge set (with hoses and cou-
plers)
Identification:
• The gauge face indicates R-134a.
Fitting size-Thread size
• 1/2”-16 ACME
S-NT196
S-NT197
WJIA0293E
AHA281A
ZHA200H
RJIA0196E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст