1. Prepare all components of the compatible size.

2. Use a smooth blade saw to make a straight, clean cut hose cut. Dyme PSI’s mini cutter with smooth knife edge blade 28.592(A).24.A (110v) or 28.592(A).24.A (220v) to create the optimal cut for performance and reduction of foreign object debris into the hose assembly.

3. Remove the hose nut from the fitting.

4. The hose nut has an internal left hand thread, it is designed to make it easier to seat the hose into the nut, screw it onto the hose in a left hand direction until it bottoms out.

5. Once the nut is fully seated with the hose, place a masking tape marker at the exact place where the hose enters the nut, this is used to validate that the hose has not pushed itself out of the nut during the assembly process, which would compromise the performance of the hose.

6. Add an assembly lubricant to the male nipple and threads of the fitting, an acceptable option is DEXTRON III automatic transmission fluid, ensuring that the hose is thoroughly flushed after assembly to remove any fluid contamination.

7. Using aluminium soft jaws, hold the assembled nut and hose in a vice, do not over tighten as it may put the nut ‘out of round’ and compromise assembly.

8. Insert the lubricated male side of the fitting into the hose nut and tighten in a right hand direction until fully seated, with a maximum gap between nut and fitting of 1mm.

9. Check the position where the tape marker was previously placed, ensure that the hose has not pushed out more than 1mm, if it has, reverse the previous instructions and reassemble, the part of the hose that was previously deformed from assembly must be trimmed off and discarded. 

10. Before use it is important to thoroughly flush the part to remove debris from cutting and lubricant that has migrated to the inside wall of the hose, clean to the requirements of the application.

11. It is recommended to pressure test the assembly before use to ensure there are no leaks, refer to the performance specifications for the size used to see the test pressure.

12. CPE Rubber hoses should be replaced every 5 years (or sooner based on the type of use of the hose), as the materials can degrade over time with chemical exposure, UV exposure, thermal exposure and other abuse, make an inspection or replacement schedule based on the needs of the application. For motorsport applications with a long service life, PTFE assemblies are recommended.