Procedure For Detection Of Refrigerant Leaks (NTB96-087)

WARNING: This page is about the Sentra E, 2D Sedan, Automatic, which is a different variant/trim than selected.

Publication date: 1996-09-11
Reference number: NTB96-087
Supersedes refnos: NTB95-014

PROCEDURE FOR DETECTION OF REFRIGERANT LEAKS

TECHNICAL SERVICE BULLETIN

Reference Number(s): NTB95-014, NTB96-087, Date of Issue: September 11, 1996
Superceded Bulletin(s): NT895-014

REVISED PROCEDURE FOR DETECTION OF REFRIGERANT LEAKS

Model(s): All Nissan Models

Classification: HA96-008

Section: Heater & Air Conditioning

Bulletin No.: NTB96-087

Date: September 11, 1996

NOTE: This bulletin supersedes NT895-014/HA95-003, dated February 22, 1995. Please discard bulletin NTB95-014.

SERVICE INFORMATION

An updated refrigerant leak detection procedure is now included in all service manuals beginning with the 1997 model year. The revised procedure is applicable to all models and includes the following changes or additions:

A minimum charge specification prior to conducting the leak check.
The recommended minimum ambient temperature for effective leak detection.
Recommended probe tip moving speed and position away from the point to be checked.
Proper cleaning of A/C components and fittings prior to leak checking.
Rechecking a suspected leak.
Checking procedures for specific A/C components such as the compressor, liquid tank, service valves and cooling unit.
Elimination of soap and water as a secondary check method.

In some cases you may not detect a leak readily if both the high and low side pressures are equalized. The revised procedure introduces a second test condition that can possibly detect a leak (or leaks) that the first test condition could not.

The service manuals listed below will contain the updated leak detection procedures:

1997 Maxima
1997 Sentra/200SX
1997 Truck
1997 Pathfinder
1997 Quest
1998 Altima
1998 240SX

Please reference Service Procedures under Contents at the beginning of the HA section. Within this section refer to "Checking Refrigerant Leaks" to find the leak detection procedures.

NOTE: For models with service manuals not yet published or received, please refer to another model that is released because the procedure is the same for all models.