Rear Underbody Heater Lines

REMOVAL
Complete Heater Line
1. Drain the cooling system.
2. Remove the air box.
3. Lift vehicle on hoist.
4. Remove passenger side tires.
5. Remove both front and rear inner fenders.
6. Disconnect the underhood heater lines using spring clamp release pliers.
7. Disconnect the rear heater lines at the rear heat core connections using spring clamp pliers.
8. Remove all body mount bolts on the passenger side and loosen the body mount bolts on the driver side.
9. Place a jack stand at the front and rear of the vehicle on the passenger side so that the stands will support the body
10. Detach all underbody heater line brackets from the body that are accessible.
11. Lower the hoist until the body, that is being supported by the stands, is approximately 3-4 inches above the frame. This will allow access to the underbody assembly.
12. Remove all remaining heater line brackets that were not accessible before the body lift.
13. Remove the complete heater line assembly from the vehicle.

1/2" Rear Heater Tube Repair
1. Remove and isolate the battery negative cable from the battery.
2. Drain the cooling system.
3. Lift vehicle on hoist.
4. Pinch heater hoses in engine compartment.
5. Remove rear passenger tire.
6. Remove rear inner fender well.
7. Disconnect the heater hose from the rear heater core using constant tension clamp pliers.
8. Drain any remaining coolant from the underbody heater lines and rear heater core.
9. Mark cut location on tube on vehicle.
10. Cut tube on vehicle.
11. Size replacement tube, same size as tube removed from vehicle.
12. Scuff end of both tubes using pad provide in special tool kit.
13. Select proper Lokring for tube.
14. Put a drop of sealer from kit on the end of each tube, install Lokring and rotate to spread sealer evenly.
15. Put installation tool over the Lokring with tubes installed (tubes must be bottomed out in Lokring)
16. Select the proper jaws for the installation tool from the kit.
17. Compress Lokring using a wrench to draw the screw tight on the installation tool. Tighten the tool until the Lokring is bottomed out.
18. Connect the heater hose to the rear heater core using constant tension clamp pliers.
19. Install the rear inner fender well.
20. Install the passenger tire.
21. Remove the hose clamp from the heater hoses in the engine compartment.
22. Lower the vehicle on the hoist.
23. Refill the cooling system .
24. Connect the battery negative cable to the battery.

INSTALLATION
1. Install the complete heater line assembly to the vehicle.
2. Install all heater line brackets that were not accessible before body lift.
3. Raise the hoist until the frame and body are lined up and the body mounts line up with the frame mounting pieces.
4. Install all remaining underbody heater line assembly brackets.
5. Install all body mount bolts on the passenger side and tighten both the passenger and driver side mount bolts.
6. Raise the lift until the jack stands are free, then remove the jack stands from under the vehicle.
7. Connect the underbody heater lines at the rear heater core.
8. Connect the front underhood heater lines using spring clamp pliers.
9. Install the front and rear inner fenders.
10. Install the passenger side tires.
11. Lower the vehicle on the lift.
12. Install the air box.
13. Refill the cooling system.