Tools Required

J 29803-A ISO Flaring Tool

Caution: Always use double walled steel brake pipe when replacing brake pipes. The use of any other pipe is not recommended and may cause brake system failure. Carefully route and retain replacement brake pipes. Always use the correct fasteners and the original location for replacement brake pipes. Failure to properly route and retain brake pipes may cause damage to the brake pipes and cause brake system failure.

1. Obtain the recommended tubing and steel fitting nuts of the correct size. Use the outside diameter tubing in order to specify the size.
2. Cut the tubing to length. Determine the correct length by using a string in order to measure the old pipe. Add 3 mm (1/8 in) for each ISO flare.
3. Before starting the flare, install the fittings on the tubing.
4. Chamfer the inside and outside diameter of the pipe with the de-burring tool.
5. Remove all traces of lubricant from the brake pipe and the flaring tool.
6. Clamp the flaring tool body in a vise.
7. Select the correct size collet (2) and forming mandrel for the pipe size used.



8. Insert the proper forming mandrel (3) into the J 29803-A body.
9. While holding the mandrel (3) in place with a finger, thread the forcing screw (2) until the screw makes contact with and begins to move the forming mandrel.
10. When contact is made with the forming mandrel, turn the forcing screw back one complete turn.



11. Slide the clamping nut over the brake pipe into the correct collet (2). Leave approximately 19 mm (3/4 in) of tubing extending out of the collet.
12. Insert the collet (2) into the J 29803-A body. The brake pipe end must contact the face of the forming mandrel.
13. Tighten the clamping nut (1) into the J 29803-A body very tight or the pipe may push out.
14. Wrench tighten the forcing screw until the screw bottoms. Do not overtighten the forcing screw or the flare may become oversized.



15. Back the clamping nut out of the J 29803-A body.
16. Disassemble the clamping nut and collet. The flare is now ready for use.



17. Using a tubing bender, bend the pipe to match the old pipe. Maintain a clearance of 19 mm (3/4 in) for all moving or vibrating components.