Service Port HVAC: Service and Repair

Needle jet/service valve, replacing

Special tools:
951 1204 Removal Tool 951 1204 Removal Tool
981 1994 Valve needle wrench 981 1994 Valve Needle Wrench

As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information in the illustrations is always correct.

Removing the needle jet/service valve




Remove the battery lead. See Battery, disconnecting Battery Disconnecting.




Remove the valve cap.
Drain the refrigerant from the system. See Refrigerant, draining Refrigerant, Draining.
Remove the needle jet in the service valve. Use special tool 951 1204 REMOVAL TOOL 951 1204 Removal Tool.

Installing the needle jet/service valve
Install the needle jet. Use special tool 951 1204 REMOVAL TOOL 951 1204 Removal Tool.
Tighten the needle jet. Use special tool 981 1994 Valve needle wrench 981 1994 Valve Needle Wrench. Tighten to 6 Nm.

Note! Use only your finger and thumb when tightening the needle jet to avoid damage to the valve seal.

Vacuum pump. See Vacuum pumping Vacuum Pumping.
Fill the system with refrigerant. See Refrigerant, filling Refrigerant, Filling.
Test for leaks. See Leak tracing, fluorescent tracing agent / UV lamp Leak Tracing, Fluorescent Tracing Agent/UV Lamp or Leak tracing, electronic leak tracer Leak Tracing, Electronic Leak Tracer.
Install the battery lead. See Battery, disconnecting Battery Disconnecting.