It all starts with a customer with a broken hose When a customer walks in with a hose that needs to be built, what are the important questions. Ask age and type of equipment. A new US Ag product will lead you to a JIC or OFF style fitting. A German make of machine leads you to DIN or British fitting. Cat leads you to think of 4 wire hose. Ask if they have had the hose repaired before. If they tell you the hose fails frequently, dig for more information. Simple hoses do not tend to get you much information. BUT if the hose is expensive or has “rare” fittings, they will remember from the last time they had it repaired. The higher pressure or more expensive products, the customer tends to remember details. If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
First step in making a new hose = hose. 2 wire hose, about 90% of all hydraulic hose used world wide (GR2SN, GCP3 and GR16SC). When you look at the cut end of the hose look for groups of wire The individual strands will group together in a braided hose If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
First step in making a new hose = hose. 4 wire hose, heavier equipment and larger size hose. Four wire and six wire hose will look more Uniform and layered in appearance If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
First step in making a new hose = hose. SS braided Teflon (GR14a), compressor discharge and specialty applications. Claim to fame is high temp rating. Non conductive, primarily in 100R7 (NR7) style for personal lift truck applications. If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
First step in making a new hose = hose. Suction, large bore fabric and wire reinforced for low pressure fluid return. General purpose / air hose, push on hose After you have the basic hose, then you can get into specialty products, IE high temp, low temp, abrasion coating, etc. In the front of the hydraulic catalog you will be able to take the hose and find the page of the fitting needed. IE from page III you will find JIC fittings for GR16SC are found on page 49. If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
First step in making a new hose = hose. Look for the 100RX rating if printing is visible. Our products names are based upon the 100RX system. IE 100R2 = GR2. Check pressure rating of your product if different from customers original parts. If no printing visible, cut the end off and look at the wire to determine the amount. Look at the hose for ways to improve. IE abrasion marks add sleeve. Listen to the customer, if the hose fails consistently, can you improve? Need ideas, call your local sales representative or key people in your organization. If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
Hose Recommendation Guidelines General Hydraulic Systems: GR16SC with B2 fittings, basic two wire product covering most applications light with AG, mobile and construction applications. Air Brake Systems: Mainline piping on Chassis: GUT with UT fittings or or HR5 with FG or UC fittings. Complete Chassis air brake system: HR5 with UC fittings Compressor Discharge: GR14a with UC fittings Mobile Trucks With Personal Lifts: NR7 with T7 fittings Heavy Construction Hydraulic Systems: GR12 with S4 fittings for heavy duty applications below 4,000 psi. Fuel Systems: GR5/HR5 & GUT hose compatible with diesel and gasoline for non under hood applications. Follow guidelines for under hood applications GR14a for Misc high temp applications Power Steering Systems: GR16SC with B2 fittings, HR5 with UC crimped fittings or FG field attachable fittings or GUT with UT fittings Transmission Oil Cooler Lines: HR5 with FG or UC fittings. Super Heavy Construction Hydraulic Systems: GR13 or S4SH with S6 fittings for very heavy duty applications High Temp Discharge: GR14a for compressor discharge lines with UC fittings and UCF9 ferrules. Air Conditioning Systems: Crimped Solution: G4826 with A/C Fittings Cool Clip Solution: G4890 with GC Fittings Shop Air Lines” Instagrip or Ultragrip air hose with PB style fittings Wet Kit Return Lines or Suction Lines: HR4 with UC/UCF6 fittings Pressure Washer Systems: Neptune 3000 with B2 Fittings
Step two is determine the fitting: If no information was obtained from the customer to lead you in a direction, your best ally are your own fittings. If the customers product has a female, use your males to verify you have the right part. Look at the “seat” and match. Nut size is not consistent across manufactures, you cannot do a final determination based on the nut size. If you are stumped look in the back of the catalog for ideas starting on page 484 If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
Step two is determine the fitting: Common direction: JIC (JC) primary original equipment fitting in NA roughly since 2000. O-Ring Face (OF) primary ag and heavy equipment fitting since 2000. German Din light and heavy (DL and DH) are the most common European style fitting. National pipe (NP) most common fitting in US market. Old technology with poor sealing. O-Ring Boss (OB) historically used in the AG market older equipment. JIS (JS) common Asian metric fitting. Code 61 (FL) common suction style fitting. Code 62 (FH) common heavy industry fitting. Cat Flange (DF) like the Code 62 but much “beefier.” If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
Step two is determine the fitting: There are two types of fittings in the hydraulic world. First (on the next page) is compression fittings. Compression fittings rely on the shell of the fitting to grab onto the cover and hold the fitting on. Old technology that has been used for 50 years. The flair on the hose end of the fitting protects the cover from rubbing and cutting on the fitting and damaging. The “bubble” on the back side allows rubber to “flow” into this section when compressed. Second (all Veyance fittings for wire braid) are bite to the wire. Newer technology that has become a market standard Teeth inside the shell bite through the cover and lock into the braid for a metal to metal joint. If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
No-Skive - Bite-to-the-Wire (BTW) Serrations bite through the outer hose cover. Resistant to dynamic conditions. Resistant to aging and cold flow. BTW
New labeling on the fittings
Important Pages in Goodyear Hydraulic Catalog Page III: Fitting quick location guide by hose type. Page 35 and 36: Hose Performance Summary Page 39 and 40: Sleeves and routing clamps Page 44: Fitting nomenclature Page 281: O-Ring and flange components Page 460: Crimping one and two piece hydraulic hose, A/C hose and Field Attachable fittings assembly instructions. Page 484: Fitting Identification help section If we see a part number in the column of our desired hose, this would indicate a Dual-Grip or a Uni-Crimp fitting requiring a separate ferrule. We will learn more about these part numbers shortly… A “blank” would indicate that the fitting is NOT compatible with the hose selected.
Fundamental Rules: Use common sense! Check your work! Follow your “manufacturers” guidelines. There are reasons behind how the crimp fittings and hoses are designed to work together. Mating hose and fittings without a manufactures procedure is a path to failure. Number 1 failure method due to operator error is failure to properly push hose into the fittings. Number 2 failure method due to operator error is failure to check crimp diameters.
Test Questions 1) What are the 2 most common operator error failures of a new hydraulic hose? A________________________ B________________________ 2) On what page of the catalog could you review fitting nomenclature? ________________ 3) Goodyear's industry leading fitting hose connection is called __________ ____ ______ _________ 4) Teflon Stainless Steel braid hose GR14A is used for compressor discharge the hose has what important quality? __________________________ 5) When looking at the cut end of a hydraulic hose you can tell it is 2 wire because the wires are _____________