Infiniti G35 (V35). Manual - part 84

PRECAUTIONS

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Precautions for Refrigerant Connection

NJS0002K

A new type refrigerant connection has been introduced to all refrigerant lines except the following location.

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Expansion valve to evaporator

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Refrigerant pressure sensor to condenser

ABOUT ONE-TOUCH JOINT
Description

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One-touch joints are pipe joints which do not require tools during piping connection.

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Unlike conventional connection methods using union nuts and flanges, controlling tightening torque at
connection point is not necessary.

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When removing a pipe joint, use a disconnector.

COMPONENT PARTS

FUNCTIONS OF COMPONENT PARTS

NOTE:

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Garter spring (2) cannot be removed from cage (A) of male-side piping.

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Indicator ring (3) remains near piping connection point, however, this is not a malfunction. (This is to
check piping connection during factory assembly.)

1

Pipe (Male side)

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Retains O-rings (4).

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Retains garter spring (2) in cage (A).

2

Garter spring

Anchors female side piping (5).

3

Indicator ring

When connection is made properly, this is ejected from male-side piping (1). (This part is no longer 
necessary after connection.)

4

O-ring

Seals connection point. (Not reusable)

5

Pipe (Female side)

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Seals connection by compressing O-rings (4).

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Anchors piping connection using flare (B) and garter spring (2).

RJIA4383J

ATC-8

PRECAUTIONS

REMOVAL

1.

Clean piping connection point, and set a disconnector.

2.

Slide disconnector in axial direction of piping, and stretch garter spring with tapered point of disconnector.

3.

Slide disconnector farther so that inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then male-side piping can be disconnected.

INSTALLATION

1.

Clean piping connection points, and insert male-side piping into female-side piping.

2.

Push inserted male-side piping harder so that female-side piping flare stretches garter spring.

3.

If inside diameter of garter spring becomes larger than outside diameter of female-side piping flare, garter
spring seats on flare. Then, it fits in between male-side piping cage and female-side piping flare to anchor
piping connection point.

NOTE:
When garter spring seats on flare, and fits in between male-side piping cage and female-side piping flare,
it clicks.

CAUTION:

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Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

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Insert piping securely until a click is heard.

SJIA0106E

SJIA0107E

PRECAUTIONS

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After piping connection is completed, pull male-side piping by hand to make sure that connec-
tion does not come loose.

NOTE:
One-touch joint connection is used in points below.

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Low-pressure flexible hose to low-pressure pipe 1 (O-ring size: 16)

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Low-pressure pipe 1 to low-pressure pipe 2 (O-ring size: 16)

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High-pressure flexible hose to condenser (O-ring size: 12)

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High-pressure pipe 1 to High-pressure pipe 2 (O-ring size: 8)

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High-pressure pipe 1 to condenser (O-ring size: 8)

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

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The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi-
nates the possibility of the O-ring being caught in, or damaged by, the mating part. The sealing direction of
the O-ring is now set vertically in relation to the contacting surface of the mating part to improve sealing
characteristics.

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The reaction force of the O-ring will not occur in the direction that causes the joint to pull out, thereby facil-
itating piping connections.

SHA815E

ATC-10

PRECAUTIONS

O-RING AND REFRIGERANT CONNECTION

CAUTION:

The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant may leak at the con-
nection.

O-Ring Part Numbers and Specifications

PJIA0154E

Connection type

Piping connection point

Part number

QTY

O-ring size

New

Low-pressure flexible hose to low-pressure pipe 1 (One-
touch joint)

92473 N8221

2

16

Low-pressure pipe 1 to low-pressure pipe 2 (One-touch 
joint)

92473 N8221

2

16

High-pressure pipe 1 to high-pressure pipe 2 (One-touch 
joint)

92471 N8221

2

8

Condenser to high-pressure flexible hose (One-touch joint)

92472 N8221

2

12

Condenser to high-pressure pipe 1 (One-touch joint)

92471 N8221

2

8

Low-pressure pipe 2 to expansion valve

92473 N8210

1

16

High-pressure pipe 2 to expansion valve

92471 N8210

1

8

Compressor to low-pressure flexible hose

92474 N8210

1

19

Compressor to high-pressure flexible hose

92472 N8210

1

12

Liquid tank to condenser pipe

Inlet

92471 N8210

1

8

Outlet

1

Former

Refrigerant pressure sensor to condenser

J2476 89956

1

10

Expansion valve to evaporator

Inlet

92475 71L00

1

12

Outlet

92475 72L00

1

16