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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 507 (Heater & Air Conditioning Control System) >> Precaution >> Precautions >> Precaution for Service Equipment >> Service Couplers

Service Couplers

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

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. However, if an improper connection is attempted, discharging and contamination may occur.

G04077801Courtesy of NISSAN NORTH AMERICA, INC.

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

Close