The Following Will Be Used HFI Standards Unless Specifically Specified in Writing (Other

STANDARD HFI MANUFACTURING PRACTICES, PROCESSES, AND PROCEDURES

The following will be used as HFI standards unless specifically specified in writing (other than a standard print or instructions) to do so.

Hose Department

1. Tolerances on lengths will be per SAE standards.
2. Up to 12 inches - ±1/8 inch
3. Over 12 to 18 inches - ±3/16 inch
4. Over 18 to 36 inches - ±1/4 inch
5. Over 36 inches - ±1%

1. Labels, when required, will apply as follows:

• Finished lengths less than 6 inches – 1 tag in center, no printing.
• Finished lengths 6 to less than 18 inches – 1 tag or printed label in center.
• Finished lengths 18 inches and over – 1 tag or printed label on each end.

1. All MAYVILLE hoses get plastic caps and labels.

1. Extra fittings added that (because the correct ends are not available) are added, the length of the hose includes the added fitting. Drawings or print details supersceed this note.

1. Capacities:
2. Plastic Hose Cutter Saw5/8” Max.
3. Hose Saw1” Max. (up to 1½, but not preferred)
4. Manual Saw1” Max.
5. Manual Saw2” Max

Tube Department

1. Unspecified tolerances will be applied as follows:

• Lengths under 12 inches - ±.030.
• Lengths 12 to 36 inches - ±.060.
• Lengths 36 to 60 inches - ±.125.
• Lengths over 60 inches - ±.250.

1. Minimum tolerances are ±.030 & ±1º.

1. Unspecified radiuses will be at least double the tube OD.

1. Capping of ends, when required, will be of the plastic type.

1. Maximum collapse at the bends is 15%.

1. Capacities:

Parflange Tooling

METRIC Parflange Tooling

Compression Fittings

Flaring Notes

1. 1 1/4” x .120 maximum.

Machined Fittings

1. Reference dimensions are to be interpreted as an approximate measure derived from the subtraction or addition of the remaining associated dimensions. The accuracy of the reference dimension is dependant on the part and the specification. If there is a question, please see your supervisor or the quality engineer.

1. OD and ID Chamfers not specified are to be .020 max.

1. Machine Capacities:

Fittings

1. 90º restrictor parts will be stamped with size as follows:
2. 1/32“.032R” (both .031 or .032)
3. 1/16“.062R” (both .062 or .063)
4. Customer Specific“.xxxR” (where .xxx is the size) The actual drill used will be the closest standard drill available (fractional, number or letter).

1. Reed Thread roller capacities

Engineering

1. Prints for parts that have not been made in more that 9 years and there is no inventory will be marked “OBSOLETE” when found.

Quality Control

1. PPAP submissions:

• HFI forms and format will be used.
• 2 parts will be measured (unless only 1 is supplied).
• It is encouraged the parts made by an outside supplier perform and submit the PPAP to HFI.
• Submission level 2 is default (Warrant, Parts, Drawings and Inspection Results).
• Submission level 3 PPAP’s contain Warrant, Parts, Drawing, Inspection Results, Process Flow Chart, Control Plan and FMEA.
• When produced by an outside source,:
• No Process Chart.
• No FMEA.
• Control Plan only shows receiving.
• MTD PPAP’s require revision level P prints.
• HFI production parts requires level 3 PPAP with warrant, 2 sample layout parts, layout, control plan, process flow chart, FMEA, and print.
• Purchased parts requires level 4 PPAP with warrant, 2 sample parts, layout, (purchased) control plan, and print.

1. Acceptable Quality Levels

• Final Inspection
• B4 & B6 AQL 1.5%
• B5 & Outside Sources AQL 1.5%
• Hoses & Tubes AQL 4.0%
• In Process Inspection
• B3 Hose & B3 Tube AQL 4.0%
• B5 Assembly AQL 4.0%

Revision History:

7-15-05Started.

12-7-05Added capacities per PQMC.

12-13-05Released for use.

8-9-06Removed 5/8” radius from 3/8” tubing.

11-9-06Added back 5/8” radius and removed 9/16” radius from 3/8” tubing.

3-7-07Added Parflange Tooling list.

3-13-07Modified hose saw capacities.

3-15-07Added restrictor fitting notes.

6-22-07Added compression fitting minimum chart.

8-15-07Added ¾-049 Parflange Tool

12-10-07Added inspection AQL levels.

1-10-08Removed 1 ¼” Radius

6-2-08Further defined PPAP’s

10-30-08Added Reed Thread Roller capacities.

11-4-08Further defined PPAP for MTD.

12-11-08Added flaring notes.

2-4-09Updated more Parflange Tooling

4-6-09Revised stamp from “.063R” to “.062R”

5-4-09Updated radius dies, increased maximum flaring size.

6-8-12Added Metric Parflange tooling

2-1-13Added ½” x .049 Stainless Steel parflange tool

Distributed Locations

HFI File Server

2-1-13W-186