Automatic Belt Tensioners Automatic Belt Tensioners

Transcripción

Important Facts About Dayco®
Automatic Belt Tensioners
“We’ll build on the technology we introduced in the development of our OE Heavy Duty
Tensioner to engineer a version for passenger and light truck tensioner applications.”
Dayco Research and Development committee..1980
Dayco has been a pioneer in Original Equipment automatic belt tensioners since obtaining their first
tensioner patent in 1976; progressing through the development of the revolutionary serpentine belt drive
system for the 1979 Ford Mustang and ultimately, the development and patenting of the first
production “flat spring” automotive tensioner.
In 1997, Dayco scored another first by introducing the Dayco Tensioner to the Aftermarket. In the
process, Dayco generated a completely new and profitable avenue of sales for automotive part
suppliers. The Dayco commitment to the Aftermarket then…as it continues to be…was “to
continually set the industry standard for tensioner quality and VIO tensioner replacement coverage.”
Facts To Consider:
• Dayco manufactures automotive and heavy-duty tensioners for both Original Equipment and
Aftermarket Applications.
• Technology developed for Dayco manufactured heavy-duty tensioners is incorporated into
the Dayco manufactured passenger car and light truck tensioner line.
• Dayco engineered tensioners for the Aftermarket utilize the same components used to build
Dayco Original Equipment Tensioners.
• Dayco Original Equipment and Aftermarket manufactured tensioners are built in Dayco’s
QS9000/ISO9001 facility in Springdale, Arkansas.
• Dayco manufactured Aftermarket tensioners are designed to fit and perform to Original
Equipment specifications regardless of mid-year model changes.
• Dayco manufactured tensioners feature the unique, patented “flat spring” design.
• Dayco manufactured tensioners utilize tough, long lasting cast aluminum housing and arms.
• Pulleys incorporated into Dayco tensioners feature smoother surfaces; tighter tolerances and
lifetime lubricated ball bearings.
• Dayco tensioners offer superior application coverage.
A1
Tensioners... What Do They Do?
Serpentine drive systems utilize a single long belt which “snakes” around most, if not all, of the
Automatic Belt Tensioner utilizes a “flat spring” technology,
accessory pulleys. The Dayco
which allows for an increase in torque to be transmitted to the belt when needed. In a conventional
V-belt system, this torque is limited to static tension due to the belt adjustments having locked centers.
If, when installed, the belt was tensioned insufficiently, or if the belt has stretched or worn through use,
it will slip when placed under a load resulting in poor accessory performance and premature belt
failure. If the belt was over tensioned when installed, there is risk of premature accessory bearing
failure. A spring-loaded automatic tensioner compensates for the belt’s stretch and wear by
maintaining a constant tension on the belt throughout the life of the belt.
Automatic Belt Tensioner
Dayco®
Features And Benefits
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Replace A Tensioner When:
Serpentine belt drives consist of a single belt, which powers a variety of accessory drives. To maintain
the proper tension and to prevent the belt from slipping or flipping off the pulleys, an automatic (spring
loaded) tensioner is incorporated into the drive system.
Tensioner Noise
Listen closely to the tensioner when the engine is
running. When the engine is shut off and the belt is
removed...check the pulley for free rotation. If you
hear noise or feel resistance to turning this could be
the sound of impending bearing failure.
Loss Of Tension
Tension loss is evidenced by belt squeal or an
accessory that has stopped working completely.
Metal To Metal Contact
If there is any metal to metal contact between arm
and spring case, this is a sign of spring bushing or
pivot bushing wear.
A2
Belt Tracking Improperly
If the belt is tracking off center, at or off the edge of
the pulley, or if the belt flips off the tensioner, this is
a sign of bushing wear resulting in tensioner
misalignment.
Sticking Or Notchy Movement
When removing or replacing the belt, check the
tensioner torque by applying torque to move the
tensioner arm from stop to stop. The arm should
move smoothly and without hesitant movement.
Broken Or Cracked Tensioner “Stops”
When removing or replacing the belt, check the
tensioner “stops” located on both the tensioner arm
and of spring case to see if they are broken.
All components of the Dayco
Automatic Belt Tensioner have been selected for their
individual characteristics such as weight, wear protection, lubricity, overall strength and deflection
rates. Typical component materials include high-grade spring steel, diecast aluminum and
engineered resins. These materials and engineering expertise have resulted in the design of a
tensioner, which will deliver the proper output torque required to maintain belt tension throughout the
service life of the system. Dayco
Automatic Belt Tensioners…built to outperform and outlast
competitive OE parts.
Features
Benefits
1. Steel locator pin
• Properly locates tensioner
2. Heavy duty cast aluminum spring case
• Resists cracking and fatigue
3. Thermoplastic rubber spring slot plug
• Protects against detrimental environmental elements
4. Steel pivot tube (where application demands)
• Provides additional strength for critical torque requirements
5. Lubricated Nylon pivot tube bushing
• Promotes quieter performance and longer life
6. Teflon strip
• Abrasion resistant
• Permits spring to operate smoothly and efficiently
7. Coated flat wire spring
• Coated to resist rust
• Concentric, provides a more even degree of constant tension
8. Nylon spring bushing
• Promotes quieter performance
• Maintains pulley alignment
9. Heavy duty cast aluminum tensioner arm
• Assures additional strength and less distortion
10. Nylon armplate bushing
• Wear surface between arm and armplate provides smooth
operation and damping
11. Steel Armplate
• Provides uniform axial force for consistent damping
and arm alignment
12. Engineered grooved or (crowned) glass filled polymer
pulley (or steel where application demands)
• Meets OEM performance standards
• Pulley bearing lubricated for life
• Keeps belts running in the center of pulley
13. Pulley dust cover
• Protects against detrimental environmental elements
14. Zinc coated pulley mounting bolt
• Resists rust and corrosion
A3
Caractéristiques et avantages du tendeur à courròie
automatique
de Dayco®
Dayco® Tensor Automático De Correas
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El accionamiento con correas serpentinas consiste de una única correa la cual impulsa una variedad de
accesorios. Con el fin de mantener la tensión correcta y evitar que la correa resbale o salte de las poleas, se
incorpora un tensor automático (cargado con resorte) en el sistema de accionamiento.
Un système d’entraînement par courroie à serpentin consiste en une courroie unique qui alimente toute une
gamme d’autres mécanismes secondaires. Le système incorpore un tendeur automatique (à ressort) servant à
maintenir une tension adéquate et à empêcher que la courroie ne ressorte des poulies ou se torde.
Todos los componentes del Tensor Automático de Correas Dayco
(Sin Huelgo) han sido
seleccionados por sus características individuales tales como el peso, protección contra el desgaste, lubricidad,
resistencia total y grado de desviación. Los materiales componentes típicos incluyen: acero de alta calidad para
resortes, aluminio fundido a presión y resinas de fórmula especial. Estos materiales y la pericia en
ingeniería han dado como resultado el diseño de un tensor que entrega el torque de salida requerido para
mantener la tensión de las correas durante toda la vida de servicio del sistema. Tensores Automáticos Para
Correas Dayco
… construidos para durar y rendir más que las piezas del Equipo Original.
Tous les composants du tendeur de courroie automatique
de Dayco ont été sélectionnés en raison de
leurs caractéristiques individuelles telles le poids, la résistance à l’usure, la lubricité, la solidité et le taux de
déflection. Les matéraux typiques formant ces composants comprennent de l’acier à ressorts de qualité
supérieure, de l’aluminium moulé sous pression et des résines de haute technologie. Ces matériaux, jumelés à
l’expertise en génie qui les caractérise, produisent un tendeur apte à livrer le couple de sortie nécessaire au
maintien de la tension de courroie requise pendant la période d’utilisation du système. Les tendeurs à courroie
automatiques
de Dayco ... conçus pour surpasser les pièces originales, tant au niveau de la performance que de la résistance.
Características
Beneficios
Caractéristiques
Avantages
1. Pasador localizador de acero
• Ubica correctamente al tensor
1. Goupille de positionnement en acier
• Assoit correctement le tendeur
2. Caja del resorte de aluminio de servicio pesado
• Resiste rajaduras y fatiga
2. Logement de ressort en aluminium moulé résistant
• Résiste aux fissures et à l’usure
3. Tapón de ranura del resorte de caucho termoplástico
• Protege contra elementos perjudiciales del ambiente
3. Bouchon à fente de ressort de caoutchouc thermoplastique • Offre une protection contre les éléments environnementaux néfastes
4. Tubo pivote de acero (donde la aplicación lo requiera)
• Provee resistencia adicional para requerimientos críticos de torque
4. Tube de pivot en acier (lorsque l’application le requiert)
5. Buje del tubo pivote de Nylon lubricado
• Conduce a un funcionamiento más silencioso y mayor duración
• Fournit une force supplémentaire lorsque qu’un couple
supérieurest requis
6. Tira de teflón
• Resistente a la abrasión
• Permite que el resorte funcione suavemente y eficientemente
5. Manchon de tube de pivot en nylon lubrifié
• Favorise une performance moins bruyante et une durabilité accrue
6. Bande de téflon
• Résiste à l’usure
• Permet le fonctionnement doux et efficace du ressort
7. Ressort à fil plat enduit
• Enduit pour résister à la rouille
• Concentrique pour offrir une tension encore plus constante
et uniforme
8. Manchon à ressort en nylon
• Favorise une performance moins bruyante
• Maintient l’alignement de la poulie
9. Bras de tendeur en aluminium moulé résistant
• Assure une force supplémentaire et une distorsion réduite
7. Resorte de alambre plano revestido
• Revestido para resistir el óxido
• Concéntrico, para proveer un mayor grado de tensión constante
8. Buje del resorte de Nylon
• Favorece un funcionamiento más silencioso
• Mantiene la alineación de la polea
9. Brazo del tensor de aluminio de servicio pesado
• Asegura mayor resistencia y menor distorsión
10. Buje de Nylon para la placa del brazo
• La superficie de desgaste entre el brazo y la placa del
brazo provee un funcionamiento suave y amortiguación
11. Placa del brazo, realizado en acero
• Provee un esfuerzo axial uniforme para brindar consistencia
en la alineación y amortiguación del brazo.
10. Manchon de plaque de bras en nylon
• Procure en fonctionnement lisse et amorti de la surface
d’usure entre le bras et sa plaque
12. Polea especial ranurada (o abombada) de polímero relleno
con vidrio (o de acero donde lo exija la aplicación)
• Cumple con las normas de desempeño de los Fabricantes
de Equipos Originales
• Cojinete de la polea con lubricación perpetua
• Mantiene a las correas en el centro de la polea
11. Plaque de bras en acier
• Fournit une force axiale uniforme pour un amortissement
et un alignement du bras constants
12. Poulie en polymère et verre rainurée (ou bombée) et
sophistiquée(ou en acier lorsque l’application le requiert)
• Satisfait aux normes de performance originales
• Roulement de poulie lubrifié à vie
• Assure le déploiement central des courroies dans la poulie
13. Couvercle de poulie antipoussière
14. Boulon de fixation de poulie galvanisé
• Offre une protection contre les éléments environnementaux néfastes
• Résiste à la rouille et à la corrosion
13. Tapa cubrepolvo de la polea
• Protege contra elementos perjudiciales del ambiente
14. Perno de montaje bañado en cinc
• Resiste el óxido y la corrosión
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89201
89202
89208
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89210
89203
89204
89211
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89205
89206
89215
89207
89216
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89225
89218
89217
89226
89219
89227
89220
89221
89228
89222
89229
89223
89230
89224
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89237
89231
89238
89232
89239
89233
89240
89234
89235
89241
89242
89236
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89249
89250
89244
89243
89251
89245
89252
89246
89253
89247
89248
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89254
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89255
89256
89261
89262
89257
89263
89264
89258
89265
89259
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89266
89260
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89284
89267
89268
89285
89269
89286
89280
89287
89288
89281
89283
89289
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89295
89290
89291
89296
89297
89292
89298
89299
89293
89300
89294
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89303
89304
89301
89305
89306
89302
89307
89308
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89309
89315
89310
89316
89311
89317
89312
89318
89313
89319
89314
89320
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89327
89321
89328
89322
89323
89329
89324
89326
89331
89330
89333
89325
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89340
89334
89341
89335
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89336
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89338
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89345
89346
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89354
89347
89355
89356
89348
89349
89350
89357
89360
89351
89352
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89353
89361
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Idler/Tensioner Pulleys
89362
89001
89363
89002
89003
89364
89004
89005
89365
89006
89367
89366
89007
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89008
89017
89018
89009
89010
89020
89025
89012
89026
89013
89014
89027
89028
89015
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89029
89038
89036
89031
89032
89037
89039
89040
89042
89033
89043
89035
89034
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89052
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89070
89077
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89071
89072
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89073
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89074
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89081
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89096
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89091
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Idler/Tensioner Pulley Dimensions And Configuration
Idler/Tensioner Pulley Dimensions And Configuration
DAYCO
PULLEY O.D.
PULLEY I.D.
CONFIGURATION
89001 ..................................................90mm ....................................................17mm ..........................................Flat w/Flange, 31mm wide
89002 ..................................................90mm ....................................................17mm ..........................................4 Groove w/Flange
89003 ..................................................76mm ....................................................17mm ..........................................Flat w/Flange, 26mm wide
89004 ..................................................90mm ....................................................17mm ..........................................6 Groove w/o Flange
89005 ..................................................76mm ....................................................17mm ..........................................Flat, 33mm wide
89006 ..................................................90mm ....................................................17mm ..........................................Flat Steel, 30mm wide
89010 ..................................................82mm ....................................................17mm ..........................................Flat, 26mm wide
89013 ............................................ 127mm ....................................................17mm ..........................................6 Groove w/Flange
89014 ............................................ 109mm ....................................................17mm ..........................................6 Groove w/Flange
89017 ..................................................76mm ....................................................17mm ..........................................Flat, 26mm wide
89018 ..................................................90mm ....................................................17mm ..........................................Flat, 27mm wide
89020 ..................................................90mm ....................................................17mm ..........................................1/2 inch V-Belt pulley
89025 ..................................................94mm ..........................................................................................................1/2 inch V-Belt w/Bracket
89026 ............................................ 100mm ....................................................17mm ..........................................Flat Steel, 28mm wide
89028 ................................................127mm ....................................................12mm ..........................................6 Groove w/Flange
89029 ................................................ 70mm ....................................................17mm ..........................................4 Groove, Steel w/Flange
89031 ..................................................80mm ..........................................................................................................Flanged Pulley w/Bracket
89032 ..................................................80mm ..........................................................................................................Flanged Pulley w/Bracket
89033 ..................................................70mm ....................................................17mm ..........................................Flat, 26mm wide
89034 ................................................123mm ....................................................12mm ..........................................1/2 inch V-Belt pulley
89037 ..................................................76mm ....................................................17mm ..........................................Flat, 22mm wide
89038 ..................................................70mm ....................................................12mm ..........................................4 Groove, Steel w/Flange
89039 ..................................................81mm ....................................................12mm ..........................................1/2 inch V-Belt Pulley
89040 ..........................................................................................................................................................................Flanged Pulley w/Bracket
89042 ..................................................70mm ......................................................8mm ..........................................Flat, 28mm wide
89043 ..................................................70mm ......................................................8mm ..........................................Flat, 26mm wide
89044 ..................................................80mm ......................................................8mm ..........................................Flat, 25mm wide
89045 ..................................................80mm ......................................................9mm ..........................................Flat, 28mm wide
89046 ..................................................70mm ....................................................10mm ..........................................Flat, 25mm wide
89047 ..................................................90mm ..........................................................................................................Flanged Pully w/Bracket
89049 ..................................................80mm ....................................................17mm ..........................................4 Groove Steel w/Flange
89052 ..................................................70mm ....................................................17mm ..........................................Flat Steel 27mm wide
89055 ................................................100mm ....................................................17mm ..........................................Flat 30mm wide
89056 ................................................107mm ....................................................17mm ..........................................1/2 inch V-Belt Pulley
A42
DAYCO
PULLEY O.D.
PULLEY I.D.
CONFIGURATION
89070 ..................................................64mm ....................................................17mm ..........................................6 Groove, Steel w/Flange
89071 ..................................................78mm ......................................................9mm ..........................................Flat 25mm wide
89072 ..................................................60mm ..........................................................................................................4 Groove, w/Flange w/Bracket
89073 ..................................................70mm ....................................................15mm ..........................................3/8 inch V-Belt Pulley
89074 ..................................................90mm ....................................................15mm ..........................................Flat 25mm wide
89075 ..................................................85mm ......................................................8mm ..........................................Flat 25mm wide
89076 ..................................................90mm ......................................................8mm ..........................................Flat 25mm wide
89077 ..................................................70mm ..........................................................................................................Flat w/Bracket
89078 ..................................................70mm ............................................................................................................Flat w/Bracket
89079 ..................................................80mm ......................................................8mm ..........................................Flat 32mm wide
89080 ..................................................64mm ......................................................8mm ..........................................8 Groove w/Flange
89081 ..................................................80mm ....................................................12mm ..........................................Flat 25mm wide
89082 ..................................................80mm ......................................................8mm ..........................................Flat 25mm wide
89083 ..................................................64mm ......................................................8mm ..........................................6 Groove w/o Flange
89087 ..................................................80mm ....................................................17mm ..........................................Flat 25mm wide
89088 ..................................................80mm ......................................................8mm ..........................................Flat 21mm wide
89089 ..................................................80mm ....................................................10mm ..........................................Flat 25mm wide
89091 ..................................................70mm ............................................................................................................Flat w/Bracket
89092 ..................................................75mm ............................................................................................................Flat w/Bracket 24.5mm wide
89093 ..................................................70mm ............................................................................................................Flat w/Bracket 28.5mm wide
89094 ..................................................74mm ....................................................17mm ..........................................Flat 39mm wide
89096 ................................................129mm ....................................................17mm ..........................................8 Groove w/Fange
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Notes
A44

Automatic Belt Tensioners Automatic Belt Tensioners

Transcripción

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