New A/C Connection O-Rings (ITB98-003)

Publication date: 1998-01-21
Reference number: ITB98-003

NEW A/C CONNECTION O-RINGS

TECHNICAL SERVICE BULLETIN

Reference Number(s): ITB98-003, Date of Issue: January 21, 1998

INFINITI:	All Infiniti
CLASSIFICATION:	HA97-013
SECTION:	Heater and Air Conditioner
APPLIED VEHICLE(S):	All Infiniti

SERVICE INFORMATION

This service bulletin identifies differences in A/C O-rings as they apply to the NEW and FORMER type A/C connections.

The NEW type connection has a groove in the tube end in which the O-ring is seated. The FORMER type connection does not have a groove but instead has an inflated portion on the tube end to support the O-ring. Refer to Fig 1 for illustrations identifying each connection type.

When servicing the A/C refrigeration loop, refer to the charts (Fig 2 and 3 ) to identify the correct O-ring type. The charts list both NEW and FORMER O-ring types and illustrates the O-rings in full-scale size.

IMPORTANT POINTS

There is NO interchangeability between NEW and FORMER connection type O-rings. Improper use will cause refrigerant leaks. Therefore, the correct type O-ring must be used with each application.
Infiniti vehicles requiring A/C O-ring replacement should be checked for proper O-ring part numbers through the applicable parts microfiche.
Insure correct O-ring installation onto tube (see Fig 1 ).

Fig 1: O-Ring Installation Onto Tube

Fig 2: A/C Refrigeration Chart

Fig 3: New and Former O-Rings Type

Fig 4: A/C Tube Bolt Installed and Tightened

CAUTION: When installing high pressure tubes (with flange connections) to their mating parts, make sure the flange is fully seated onto the mating part before the securing bolt is installed and tightened (see Fig 4 ). If the securing bolt is installed and tightened before the tube flange is seated onto its mating part, O-ring damage and leaks can result.