OEM 2002 Chevrolet Trailblazer A/C Hose

2002 Chevrolet Trailblazer Parts Questions & Experts Answers

• Q: How to service and repair the rear A/C Hose using the A/C Line Repair Kit (J 41425) on 2002 Chevrolet Trailblazer?

  A: Service and repair work on the rear A/C and heater lines requires the use of A/C Line Repair Kit (J 41425) to handle damage types including rub-through and collision-related issues as well as leakage. Apply the correct minimum length to both sides of the splice while using the Straight Line Repair procedure for straight sections and the Line Sectioning Repair procedure for bends when replacing lines in bend areas to keep the original shape and minimize vibrations. Start by extracting refrigerant from A/C lines while draining heater coolant before properly supporting and raising the vehicle from the floor. Find the damaged area and secure the required replacement line portion of identical measurement. A tubing cutter helps remove broken pipe sections while you should use replacement tubing of matching length. Utilize the cleaning pad from J 41425 A/C Line Repair Kit to prepare 0.75 inches (19 mm) of line ends from the splice area while applying LOK prep sealant to the ends. Squeeze a single drop of sealing compound (J 41425-3) onto both ends before putting them into the LOK fittings then properly spread the compound by rotating the fittings. Place the appropriate LOK fitting jaws into the tool (J 41425-1) before positioning it above the connectors that should rest in the jaw counter bores. Insert the 3/8" breaker bar into the tool body to tighten the forcing screw until both connector collars reach the center shoulder of the LOK fitting. Check the LOK fitting installation after removing the tool by loosening its screw. EIne lower the vehicle while also replacing drained coolant and using an A/C refrigerant service station to evacuate then recharge the lines.