Ways to Identify a Leaf Spring Pigidentification Spring

Catalog 215 Spring Identification

Three Ways to Identify a Leaf Spring pigIdentification Spring

The following information details the three ways in which a leaf spring may be identified for a specific application. These methods are listed in order of difficulty, therefore always attempt to identify by O.E.M. part number first before using identification by model or spring dimensions. In many cases the spring may be identified without the need for any measurements.

Identification by O.E.M part number:

How can the O.E.M part number be obtained? Use one of the following methods:

1. Call the local dealer with the vehicle serial number 2. Truck-build sheet (line setting sheet) will often list the front or rear spring 3. Check the spring for a stamping number as follows:

Full Taper Springs: Part numbers may be found in one of these locations: (see illustrations below) A. On the end of the last leaf B. At the end of the wrapper C. On the side, bottom or top of the clip Multi Leaf Springs: Part numbers may be found in one of these locations: C. On the side, bottom or top of the clip (most common) D. On the end of the shortest leaf E. On bottom of the last leaf beside the center bolt (sometimes this is hidden until the spring is removed) Three Leaf Trailer Springs: F. On the outside of the hook Spring Identification Identification by O.E.M number: part dniiainb eil ae modelandyear: Identification by vehicle make, *When identifying the spring for*When identifyingthespring ortrailer atandemaxletruck application,make surethesuspensionmake and Oncethemake and *Always toidentifyatleastthemake andmodelbefore try attemptingtousethiscatalog. are unsuccessful. should onlybeusedifthefirsttwo methodsdetailed above This isby far themostdifficultway and toidentifyaspring Identification by springdimensions: .MainLeafLength: 1. measurements? What aretheimportant oe r eemndfrt e page8for moredetails. See first. model aredetermined located. are tofindthecatalogpageswherecorrectsprings model isknown, usethecatalog's“Chapter, Index” (Note: Other Ford OE part numbers could interchange with SRI 43-434). SRI with interchange could numbers part OE Ford Other (Note: Example Usually, Ford onlystampstheprefixandsuffixbase In many cases, thenumber stampingsmay containonlya interchanges to the SRI part number 43-434. interchanges totheSRIpart suffix completestheFord Part number ofF3HT5310JA which Where canthemake, modelandyear befound? e. d. c. b. a. Spring Identification Slipper to Eye toSlipper ihtepr ubr thespring can befound inthePart NumberInterchange (Catalog210)or number, With thepart Single Point Camel Back Eye toEye must number. beaddedtocompletethepart number. oftheO.E.Mpart 5. Use catalog art work to determine themake work todetermine &model Usecatalogart 5. Modelmay bedisplayed onthevehicle 4. Onthevehicle's cabplaque 3. Thetruck-build sheet(linesettingsheet) 2. Askthecustomer 1. directions alongthearch. eye alongthearch. checked. Endholesize anddistancefrom thecenterboltmust be the mainleaf in bothdirectionsalongthe arch. Kenworth models) Identification (for example seepage541for all Addingthe5310basenumber totheF3HTprefixandJA : - Measuredfromthecenterbolttoofeye inbothdirectionsalongthearch. (used on Mack only) Mack on (used (5" wide springs used on heavy duty trailers) duty heavy on used springs wide (5" - Measuredfromthecenterbolttoofeye andtotheendwherethereisno - Measuredfromthecenter bolttotheendinbothdirectionsalongarch. on theDayton Parts websiteatwww.daytonparts.com (See Example) (See - Measuredfromthecenter bolttotheendofmainleafinboth (continued) - Measuredfrom thecenterbolttoend of Catalog 215 Spring Identification Spring Identification Spring (common on Dodge) - Use a straight edge to mark the top of the main leaf in both directions and edge to mark the top of the main leaf - Use a straight (radius leaf springs only) - Use a straight edge on the top of the slipper ends and measure the arch directly over the measure the arch directly over edge on the top of the slipper ends and - Use a straight (always measure to the top of the main leaf, do not include any pads or spacers.) - Use a straight edge to mark the center of the eye and the top of the slipper and measure the and the top of the slipper and measure edge to mark the center of the eye - Use a straight - Use a straight edge to mark the center of the eyes and measure the arch at the center bolt. and measure the arch at the center edge to mark the center of the eyes - Use a straight (Std) or Straight Eye with or without bushing Eye (Std) or Straight (Rev) Eye with or without bushings with or without Eye (Rev) (Ber) Eye with or without bushing (Ber) Eye Do not include any cast wedges or brackets. including all leaves, tow eyes, shock eyes and pads. eyes shock eyes, tow including all leaves, Measured from the center of the eye to the center bolt. the center of the eye Measured from Eye to Eye Eye Eye to Slipper Eye arch at the center bolt. measure the arch at the center bolt. center bolt. Camel Back and Single Point Camel Back Slipper to Slipper Reverse Typically no eyes are used on helper, trailer and rear single axle springs. trailer on helper, are used no eyes Typically Standard Berlin a. the leaf. center bolt from side to side across Measured at the a.of the spring the side center bolt down Measured at the a. a. b. c. d. Catalog 215 Catalog 5. Leaf Length: Eye 1. No Eyes: 2. Types: Eye 4. Spring Arch: 2. Spring Width: 3. Thickness: Pack Spring eye information: Spring eye Spring Identification the search. If make and model cannot be determined, use If make andmodelcannotbe determined, the search. Always toobtain themakeandmodel before beginning try make andmodelofthevehicle areknown. unlessthe down thecorrectspring Even withcomplete measurementsitcanstillbedifficulttotrack (pages 13-44) Characters stand for certain sizesaslistedbelow: Characters standfor certain Explanation ofbronze numbers: andbimetalbushing part Spring eye information: hr 3d hrce:Length OutsideDiameter(OD) Third (3rd)character: InsideDiameter(ID) Second (2nd)character: First (1st)character: .Bushings: 3. Spring Identification .Boz rBmtlbsig gesbebsiguigsrn iswt raeftig) Cataloglistsspringeye Bronze orBimetalbushings (greasable bushing usingspring pinswithgrease fittings). d. TBorThreadedbushings (metalbushing withathreadedinterior usedonmany oldautomotive, light,medium-duty c. RBorRubber Encasedbushings (metalencasedrubber bushing usedonmostautomotive, light,mediumand b. .H rHri uhns( ic ubrbsigue natmtv n ih uyapiain) HBbushings are bushings HBorHarris (2piecerubber bushing usedinautomotive andlightdutyapplications). a. yeadbsigpr ubr Eape Std/RNK) (Example: type andbushing number. part Std/TB-68) (Example: number. Catalog listsspringeye typeandbushing part applications but morewidelyusedonheavy dutyapplications). Ber/RB-159) (Example: Cataloglistsspringeye typeandbushing number. part some heavy dutyapplications). imtr Eape Std/ (Example: diameter. Cataloglistsspringeye typeandinside andmust ofthespring beorderedseparately. not consideredpart to assist in make and model identification. model and make in assist to ⁷⁄₈ ") Dayton Parts’ exclusive Catalog 215 Spring Finder Spring Spring Identification At Ground Suspension Capacity +600 lbs. At Pad 7,5008,0008,5009,000 34,000 36,000 38,000 40,000 10,00010,500 44,000 46,000 Spring Capacity Spring Identification Spring capacity plus one-half (1/2) of the At Pad capacity plus a portion of the unsprung weight. In At Ground Suspension Capacity At Pad Spring Capacity At Pad 5,400 lbs. Spring Capacity At Pad + 1/2 Axle Assembly Weight + 1/2 Axle Assembly At Pad = Spring Capacity At Ground = 6,000 lbs. (12,000 lb. Axle) Part Number 62-830 6,7507,5008,0008,5008,900 15,000 9,400 17,000 18,000 19,000 20,000 21,000 10,40012,00013,00014,000 23,000 26,000 28,000 31,000 Spring Capacity unsprung weight). This rating includes the This rating Example: This is the weight not supported not This is the weight the springs. by It includes the axle(s), brakes, tires and a portionwheels, of the steering in the case of front axles. components of one spring load rating as measured at the spring maximum The manufacturer’s mounting pad on the axle. This is the capacity that the spring itself is designed to support. is supported The balance of the weight the wheels and tires and by directly the springs. is not seen by Axles are rated several ways. several Axles are rated which is most important The rating when discussing Rating). Weight (Gross Axle springs is GAWR load allowable is the maximum This to be carried that axle. by approves which the manufacturer Axle capacity is read when which a scale would weight and means the measured at the ground placed under the tires. that is supported the springs of the vehicle This is the weight themselves. by This “above” of the truck includes the weight fuel of the driver, the axles plus the weight cargo. and any weight of the entire axle assembly. weight single axle applications, it equals the single axle applications, plus : At Ground Suspension Capacity Front Axle Rear Single AxleFront 4 Spring Rear Tandem At Ground: At Pad: Sprung Weight: Unsprung Weight: Axle Capacity At Pad Catalog 215 Catalog 3,1503,5503,8004,0504,500 7,000 4,850 8,000 5,400 8,500 6,000 9,000 6,300 10,000 6,500 10,800 7,200 12,000 8,200 13,200 9,200 14,000 14,600 16,000 18,000 20,000 Published Spring Capacities (or ratings) may be given for either the sprung Spring for (at pad) or at Published weight be given Capacities (or ratings) may (sprungthe ground Springs are rated in several different ways throughout this catalog. throughout ways different Springs in several are rated A basic understanding of each relate to the ratings in a suspension are shown of other components they and how below. 10,10010,600 22,000 23,000 Spring Capacity Common Spring and Suspension Capacities: Common Spring and Suspension Spring Capacities: Spring Ratings and Capacities: Spring Spring Ratings: