C 3500 HD Truck 2WD V8-6.5L DSL Turbo VIN F (2001)
1. Coat the O-rings (2) with 525 viscosity refrigerant oil.
2. Install the O-rings (2) to the evaporator tube.
3. Install the A/C refrigerant filter (4) to the evaporator tube (3) with the flow arrow pointing towards the evaporator.
NOTE: Refer to Fastener Notice in Service Precautions.