AUTOMOTIVE A/C Service & Repair 8
A/C — 757 E-SERIES FITTINGS
HOSE END SERIES: E-SERIES
Typical Applications: Used with R14a and R12 applications. Ideal for heavy duty truck use as well as industrial and automotive applications Compatible Hose: H429; H757 Pressure: Determined by hose burst pressure. Material: Carbon Steel Plating: Black; zinc with rust prevenetive. Advantages: Wide selection of hose ends wich include the flareless ends, allowing use of existing tubing. Steel hose ends handle heavy duty demands. Assemble With: T-400-1, T-410-1, T-420-1, T-440-1, T-460-1, T-462-1, T-465-1, T-475-1, T-480.
Preparation - Flareless Tube Assembly
1. Remove the bad tube assembly or if room permits, perform the cutting procedure in place. Cut the tube squarely and as close to the hose connection as possible. Allow an adequate straight area for the flareless nut and sleeve to move freely for installation purposes. Deburr the inside and outside diameters of the tubing.
757 E-Series Air Conditioning Procedure
The Coll-O-Crimp ® system can be used to make original equipment assemblies using factory replacement ends. If the required hose end is not found, a flareless hose end can be used. By following the instructions on this page, a new hose assembly can be made by combining Weatherhead’s hose end with the original equipment end configuration. • Typical original equipment assembly. • Typical assembbly of a flareless hose end used with an old original equipment end configuration. • Weatherhead replacement assemblies using original equipment tubing with Weatherhead 757 E-Series hose ends.
Make presetting Operation
1. Slide nut and then sleeve onto tube. Shoulder of sleeve must be toward nut. 2. Lubricate threads, seat in hose end and flareless sleeve with a good grade of lubricant. Insert tube into seat of hose end, making sure that tube is bottomed, TIGHTEN HAND TIGHT and then tighten an ADDITIONAL 1 to 1-1/6 turns with a wrench.
Note: Compensate for tubing being removed by adding to the overall length of the replacment hose assembly.
A
BUMPED TUBE O-RING MALE SWIVEL
R
Hose Cut-Off Factor
Hex F
Hose I.D.
Tube Size
Eaton Part No.
Thread Size
Length A
Run R
Part No.
J97.750.66 J97.750.810
5/16
3/8 5/8
75706E-Z06 75710E-Z10
5/8-18 7/8-18
2.94 1.54 1.63 3.35 1.95 2.13
5/8 7/8
1/2
F
8
BUMPED TUBE O-RING MALE SWIVEL Hose I.D. Tube Size Eaton Part No. Thread Size
A
Hose Cut-Off Factor
Hex F
Hex G
Length A
Part No.
J97.751.66 J97.751.68 J97.751.86
5/16 5/16
3/8 1/2 3/8
75706E-756 75706E-758 75708E-756
8/5-18 3/4-16 5/8-18
2.59 2.71 2.65
1.38 1.50 1.38
5/8 3/4 5/8
3/4 7/8 3/4
13/32
F
G
A
R
BUMPED TUBE O-RING FEMALE SWIVEL Hose I.D. Tube Size Eaton Part No. Thread Size
Hose Cut-Off Factor
Hex F
Length A
Run R
Part No.
J97.752.66 J97.752.88
5/16
3/8 1/2
75706E-Z47 75708E-Z49
8/5-18 3/4-16
2.78 1.38 1.50 3.06 1.66 1.75
3/4 7/8
13/32
F
Copyright © 2025
8-8-21
Made with FlippingBook - professional solution for displaying marketing and sales documents online