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Nissan Frontier. Manual - 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 manual valve situated near the

hose-to-pump connection, as follows.

• Usually vacuum pumps have a manual 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 manual

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 manual or automatic) near the end of the hoses

opposite the manifold gauge.

SERVICE COUPLERS

RHA270D

SHA533D

RHA272D

PRECAUTIONS

HA-9

< PRECAUTION >

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

RHA273D

RHA274D

HA-10

< 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 >

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

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