One-way clutches offer freewheeling with minimal power loss and excellent resistance to damage from impact shock loads. 2004-01-1151. MZ20 Sprag One Way Clutch Backstop Bearing MZ-K Shielded For Pulleys Gears Sprockets $80. Thrust Needle Roller Bearing - 2 mm Width, Single Row. Sprag clutches operate against smooth cylindrical surfaces. Days to Ship :. Study with Quizlet and memorize flashcards containing terms like The ________ connects the turbine shaft from the torque converter to the elements of the planetary gear train. Automatic transmission car manufacturers incorporate the sprag clutch to have a smooth gear. Everywhere else - Lo-roller unlockedProduct Description. Technician B says that the pump (impeller) is the driving member and the turbine is the driven member. r 3 lan(2al 7. 4 Sectional Height of Inner and Outer Rings Radial load is applied to the inner and outer rings. As his spins fine and mine is bound up. The one-way clutch has a close relationship with torque converter, especially for the stator, and its geometry structure and the basic components can be seen from Fig. A sprag is a one-way mechanical clutch used in many automatic transmissions as a method of allowing the transmission to smoothly change gears under load. Among other topics, Sauzedde led the reader through analyses on contact stress, outer ring hoop stress, and roller centrifugal force computations. Technician B says the pump is driven by the hub on the back of the converter housing. Features ・Uses a cam and roller structure where rollers s. Sprags One-way rollers Both A and B Neither A nor B Sprags Technician A says preload refers to the amount of force placed on a bearing before any load is on the bearing. The outer and inner cages (12, 14) each defines a plurality of corresponding sprag and roller openings (20, 30, 22, 32). It uses “dog bone” shaped internal components instead of rollers. When a multiple-disc clutch is used as a holding member, the lugs of the unlined plates are splined into, When a sprag clutch locks, the sprags and more. ters, vehicle, and rotorcraft. This also makes them more expensive. One way sprag bearing technical principle. Terms in this set (27) __________ can be either one-way roller or sprag. The FE 400 series is a great option if you need a large number of clutches but can’t sacrifice torque requirements. The 68RFE low reverse sprag is commonly known to flip its dog bone sprag struts and fail. Vibratory Rollers. One-way clutches can be either one-way rollers or sprags. Indexing Clutch Application Examples:Terms in this set (53) what is a clutch. Diameter: 25 mm - 110 mm. sprag one-way clutch UK 2RS, UKC 2RS series. For sprag clutches to function properly, the sprags must maintain contact with the mating surfaces while in the freewheeling state. More than 2000 standard model of one way bearring over 1000 designations of metric and inch series needle bearings are regularly. Bonbo T-0158 Universal Clutch Drum Spring Compressor Transmission Tool Heavy Duty Steel. Verify that there is no indentation in the driveshaft tubing. One way bearings are used to transmit high torque between the shaft and housing in one direction and enable free motion in the opposite direction. The most likely cause of the vibration mainly in the steering wheel of a RWD vehicle is an out of balance front tire. Sprag Clutch vs Roller Ramp Clutches. Technician A says the oil pump is driven by the Turbine shaft. d. PP features a keyway on both the inner and outer race. Show details Hide details . Bolt in sprags were designed to repair damaged cases, and adapted by racers. Diameter: 16 mm - 95 mm. A sprag clutch goes by many names: One-way bearing, freewheel clutch, cam clutch, overrunning clutch. In some cases, we have upgraded, HD, or HP units available. All available thru A&A or Cope. Features ・Uses a cam and roller structure where rollers s. WHOLESALE INQUIRIES. Bands and roller clutches are holding members. We can identify the top from the bottom by the step on the bottom of the one-way clutch. These bearings are good for large orders and low to high torque needs (1 to 2673 Nm). Drawn-cup roller clutches are one-way clutches comprising thin-walled, non-cut outer rings with ramps on the inside diameter, plastic cages, pressure springs and needle rollers. ) Roller. Although they are very durable in passenger car applications, one-way roller clutches can be a liability in racing applications. ) ÙService life Even when torque is applied at the torque capacity in NTN one-way clutch units and the units are engaged over one million times, weNew One Way Roller Clutch Sprag Bearing Assembly **Please verify your transmission before ordering. Our 400 series one-way bearing element comes with either mounting rings or without. I cut the rear ring gear no issues so far. The other type is "dimpled" to use a different type "roller clutch design" part that does the same job as the sprag, but is weaker- as is the lower count sprag that is used in some TH400's. Precision ground v grooved ways and rollers provide high accuracy and load capacity. These units are often referred to as freewheels, sprags, overrunning, backstop or one-way clutches, depending upon their application. Technician A says one-way clutches prevents components from turning in either direction. In reality, all of these sprags are not much of an. Sizes (mm) & speeds ranging from: ID (d): 5 to 40 OD (D): 16 to 80. This is a stock 71-up roller clutch type element. Show details. Technician B says one-way overrunning clutches can be either roller type or sprag type. The sprag style of clutch has more holding power for a given size because it has more contact points holding the inner and outer races together. I recommend the Sonnax replacement race, replace the rear sprag, and make sure your rear planetary is in good shape. That means in the engaged direction, there is no relative rotation allowed between the two components connected by the. -the clutch is used so that the driven shaft may be started or stopped at will without stopping the driving shaft. The influence of the structure parameters. 41. Study with Quizlet and memorize flashcards containing terms like Technician A says a simple check valve is used to block a hydraulic passageway. All One Way Clutch Bearings. : 0 Nm (0 ft. It’s always loose. 00. Roto and 315 Controlled coupling HydraMatic's ( Olds-Jetaway, Pontiac- Strato Flight or Super Hydramatic, Cadillac P315 Hydramatic ), both use a combination of a conventional clutch and Sprag Clutches ( or one way clutch ). As a general rule, Roller Skate as a noun, "This is my roller skate", it is most correct to use two words, not hyphenated. The one-way clutch has two working states that can be switched, engaging and. bearing on the fork. Precision bearing manufacturer Schaeffler has seen an increase in demand for its one-way roller clutches, including applications on e-bikes (electric bikes) and motorcycles, as well as industrial applications in overrunning clutches for packaging machines and speed compensation devices for. The roller displacement r function is given 3 as 8 = eco"'01. The FR series by Ringspann is is full face one way clutch used. When going the wrong way the rollers run up the ramp assisted by the spring and jam rotation. bearing indexing backstop. The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. 9. and more. 2. Technician B says a one-way roller or sprag is a device that typically drives another component in an automatic transmission. I think. Compatible with medium loads and easy to install. If your burnout habits are proper, a stock sprag is near bullet proof. 72 series. OWC also tend to change state very rapidly, generally between 5-50 milliseconds. Rotation in the other direction disengages the sprags D shape sprag design Free action PCE® design Inner race C/T design Various Sprag DesignsCompany Introduction: Changzhou Lisongtai Industrial Motion Technology Co. If the clutch fails to lock, the transmission will act as if it is slipping and not transmitting engine torque correctly to the drive wheels. . Who is correct? Tech A. Mount the clutch ensuring that the shaft drive directionis in the direction indicated by the arrow on the. The one-way clutch usually applies in a variety of powertrain torsional system, such as air turbine starters, vehicle, and rotorcraft. A sprag is a one way metal roller clutch. Spherical roller bearing 9. Tech B C. What is an example of a one-way clutch? roller clutch. The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. This is a sprag point, not a roller ramp point. The rear wheels B. The next picture shows a common roller clutch style drum and a roller clutch on the left, most TH400 use this style drum. Allomatic one way clutches are full-hardened, individually loaded, and made with high-quality maraging steel that provide higher fatigue limits than stainless steel. If the sprag is intact, install it into the torque drum. Description: Hilliard Sprag Clutches are designed for overrunning, backstopping and indexing applications. Sprags are sized, shaped, and mounted in a way that causes them to wedge between the two races transmitting torque from one to the other when rotated in the drive direction. Technician B says that hydraulic clutches can sometimes be adjusted from the outside of the transmission case. Note: This low roller clutch is included in our Blueprint. Brand. and more. If the sprag is intact, install it into the torque drum. Fix as soon as possible or hard parts will eventually break. Normal unboosted line pressure is about _________ psi. Reduce Harsh 1-2 Shift Damage. So, the statement of Technician is correct. A sprag and roller one-way clutch assembly (10) including an outer cage (12), an inner cage (14) and a ribbon spring (16) for use with a clutch having outer and inner races (70, 72). 50 to 60. one-way roller clutch ML series. W (b): 5 to 18 Speed (RPM): 22,500 to 129,375. , The apply device that is most commonly used as a driving member is a _____. Diameter: 0. The excitation signal for our system is either a peri-A sprag functions as a one-way clutch and operates similarly to a ratchet tool from your toolbox. Freewheel bearings are characterised by their ability to only turn in one direction which. So, the statement of Technician B is also correct. Diameter: 16. 36. The clutch disc fits between the flywheel and the pressure plate. Allows for a compact design. apps. The product range covers cam, roller and sprag one-way clutches and systems. To support radial loads, use with our Needle-Roller. The pins for the rear band and band lever slide out of the back of the casing. One-Way Clutch: Low Roller (700R4) (4L60) (4L60E) New low roller clutch features extra-wide design, for increased torque capacity. Our 400 series one-way bearing element comes with either mounting rings or without. Hard inserts are available to replace the worn. 005 inch thickness gauge under a straight edge must be replaced. tech A b. 8ARQ. Not Yet Reviewed. Is grounded at all times and the only thing that turns it on or off is the direction of rotation. An imperfection will weaken it, which can cause it. Estimated Ship Date: Monday 11/20/2023. One way sprag bearing is a kind of bearing that can rotate freely in one direction and lock in the other direction. Sprag-Type One-Way Clutch feature is that the rotation is limited to only one direction rotation by the parts called Sprag mounted between outer and inner rings. Part Number: BDD-1060603. 00 - $85. FREEWHEEL (ONE WAY) CLUTCHES - SPRAG TYPE An ISO 9001 : 2015 Certified Group NMTG NMTG Mechtrans Techniques Private Limited A2, GIDC Naroda, Phase -1, Nr. This clutch is a freewheeling device with an inner race and an outer race, either of which can be the input or output member. Tech A says that a one-way roller clutch will work fine if assembled in either direction. Many popular domestic automatics including the GM TH-350 and TH-400, Ford C-4 and C-6, and the Chrysler TF-727 and TF-904 utilize a one-way roller-type clutch. Tech a says that 2 hydraulic clutches are used to input the Simpson gear set. - 2 inches. Much less US with the one-way feature fitted. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied in the opposite direction, the sprags tilt. 3. This Sprag Fits A Wide Variety Of. Two technicians are discussing one-way clutches. For either the sprag or the ramp roller clutch, there are twobasic bearing arrangements. front hydraulic pump. In 1997, Chesney and Kremer wrote a paper entitled Generalized Equations for Roller One-Way Clutch Analysis and Design [ 1 ]. Over time the springs fatigue and break causing the sprag to slip which affects transmission operation. sprag bearing overrunning clutch. 930911. Diameter: 25 mm - 110 mm. neither c. When a tire is out of balance, it can cause the steering wheel to vibrate, especially at higher speeds. Product Description. 22935 Elkana Deane Lane Katy, TX 77449. *Input Sprag assembly W/ a new BorgWarner 29 Element Sprag. The torque is transmitted by rollers that wedge against interior ramps. c. electric motors electric solenoids pneumatic servo motors hydraulic. but many of them are actually roller clutches. As a part of Stieber modular system it has a bearing. 8ARQ. ters, vehicle, and rotorcraft. Then upon slowing or reversal, a spring at each cam pushes them back into sprag-type engagement. 26–27) GMN Sprag Type Freewheel Clutches Series: FP Components: Insert element FE 400 Z / FE 400 M + Raceway rings Inner ring press fit Outer ring press fit + Ball bearing + Roller bearing Lubrication: Oil or grease Width: 27 mm. A tire is mounted to a rim, and the rim is mounted to a wheel. - 2 1/2 inches. Description. Cylindrical roller bearing(NU10 series, NJ2 Series, N3 series, NN series) 6. These parts include: • Low one-way roller clutch • Reverse hub assembly • Inner race assembly • Low/reverse clutch return spring • Reverse ring gear and hub • Reverse planetary assembly • Clutches and steel plates You can interchange these compo-nents as a complete set, but never try toSprag Design This sprag-type design overrunning clutch generally consists of an inner race, an outer race, a set of sprags, a sprag retainer, energizing springs, and bearings . Technician A says a multi-disc clutch is a holding/application device in an automatic transmission. Also known as drawn-cup roller clutches. Sprag Clutch - General Specification RENOLD Clutches and Couplings. More than 2000 standard model of one way bearring over 1000 designations of metric and inch series needle bearings are regularly. The rear sprag is a one way clutch that rotates freely in one direction but locks tight in the opposite direction. Don't do enough confined space ratcheting to justify getting one. I know how the normal grab clutches work that are splined to the ring gear, and how they are actuated and what they do, but I can’t seem to quite understand just exactly how the one way clutches work. Sprag clutches are designed to transfer torque in one relative direction, referred to as the “engaged direction,” and to disengage—or “freewheel”—in the other direction. Products. This educational video explains how the One-way overrunning or roller clutch works to allow rotation in one direction and prevent it in the opposite direction. MISUMI. The sprag locks using roller locking techniques in a manner well known in the case of a three-dimensional (3-D) locking sprag. Our sprag profiles are designed to reduce drag. for low to mid-speed and middle load applications. co. Both the inner and outer races are smooth, and there are no notched areas as in a roller clutch. with internal bearings full-face indexing. Each sprag is essentially a strut placed between the races in such a way that it transmits power from one race to the other by a wedging action when either race is rotated in the driving direction . In all forward speeds torque must be transferred between planet gears S1 and S2, since only S1 planets engage the input M1 and only S2 planets engage the output R1. I use the good outer races and roller clutch's in all my mild buildups and tame down the 1-2 shift shock to make them live. If I was to run a 514 with a blo-thru set up I sure would make that trans bomb proof. dtic. Several different types of one-way clutches are in use, these include: Roller designs; Sprag designs; Spiral designs; Diode designs Basic Designs. Step 1 of 3. Technician A says a multi-disc clutch is a holding/application device in an automatic transmission. Get it Apr 21 - May 1. A. Diameter: 25 mm - 110 mm. Study with Quizlet and memorize flashcards containing terms like The vehicle drivetrain can send power to _______. Hi, I’ve been learning about car mechanics recently and I would like to know how the automatic transmission’s one way clutches work. 90. Technician B says that a one - way clutch could be installed upside down and cause the automatic transmission/transaxle to not function correctly. Rotational speed: 220 rpm - 2,650 rpm. In the middle of rebuild and just used the one I. It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation, are used. Student B says that most pressure regulator valves are arranged so. 99. The paper explained both the static and dynamic behavior of roller One-Way Clutches (OWC), and described the practical application of esoteric stress equations to the design of roller OWCs. None of the above. Suitable for low to mid-speed and middle load applications. Brand. All available thru A&A or Cope. The ribbon spring (16) defines a plurality of. Three brake clutches, two driving clutches and a one way roller clutch are used to operate three planetary gear sets to obtain six forward ratios (speeds) and one reverse ratio. List and describe the types of pumps in an automatic transmission. 591") OD (B) 35. So the only way to turn its fuction off is to lock the member that is rotating by some other means. mildelay angles of NTN one-way clutch units differ depending on the type and the torque that is applied to the one-way clutches. With the thrust washer and snap ring removed, remove the drum. Company Introduction: Changzhou Lisongtai Industrial Motion Technology Co. The TH-350 and TH-400 each feature two of the assemblies. $26. Triple Row. As u can see, there's a ratchet within the bevel gears and I thought I had to find a whole new mechanism to replace the entire contraption. When set in the one-way mode, the Multi-Mode Clutch holds torque in one direction, but releases in a controlled, self-synchronized manner when the direction of torque reverses. This means that roller ramp clutches typically must be provided with inner and outer rings to incorporate the ramps, while sprag clutches can operate directly. Usually you find this sprag clutch either in the. This type of clutch is commonly used in overrunning situations, such as when the vehicle is coasting downhill. -13% $3084. If this sprag is installed backward, a tie-up will occur anytime the direct clutch is applied. with internal bearings full-face indexing. In the years since, we have seen this technology advance and now one-way clutches are used in everything from hay balers to helicopters. Built-In Freewheels can either be roller or sprag type freewheels that are predominantly non-bearing supported. This makes transmit power between the engine shaft and the transmission shaft of a vehicle. 32 (+GST) Each. Sonnax 74574-HD sprag clutch hub Borg Warner 29 element dual cage forward sprag (already mentioned) 29236AM Reverse input drum: Reuses stock reverse input drum Borg Warner clutches Raybestos "turbulator " steels (needed, or use Transtar steels?) Alto lower wave plate (replaces beveled plate) part number needed. With the stator being held stationary to the stator shaft on the transmission, it holds the entire assembly from turning, redirecting oil back. Technician B says free play refers to the distance that a. -M. The outer race of the OWC system is fixed rotation-ally. Above right: Although time consuming, properly setting up the sprag is what keeps a TorqueFlite from disintegrating like ours did. The steel. A sprag clutch is a type o f one-way clutch. - riding the clutch pedal. Sprag Clutch Refresher. Allomatic sprags are full-hardened, individually loaded, and made with high-quality maraging steel that provide higher fatigue limits than stainless steel. 3) Trans cooler + temp gauge. When driven in one direction the sprag rotates and jams between the raceways which locks the raceways together. Study with Quizlet and memorize flashcards containing terms like Two technicians are discussing one-way clutches. The type of one-way clutch that uses rollers is called a sprag. P and CSK. Types CSK. This educational video explains how the One-way overrunning or roller clutch works to allow rotation in one direction and prevent it in the opposite direction. The respective features are detailed below. 95. About Quizlet; How Quizlet works;. b. 19. Please contact us when either the ambient or the operating temperature is not within the range +5°C to +60°C. The pump housing will only orient one way, since there is only one area of the pump which has two bolts close together. Compatible with medium loads and easy to install. In an indexing application, reciprocating (or back and forth) motion is transferred into only one-direction of motion. A heat treated intermediate sprag race is darker colored than a stock part. That way they can be ready to engage as soon as the relative rotation changes and torque transmission is required. What type of planetary gear set has a set of long and short pinions?A sprag clutch bearing is a one way freewheel clutch that turns in a single direction. ☒ True or ☐ False 42. The material is compacted by vibration, impact loading, kneading, &. , Ltd, is a manufacturer specialized in Producing Various One Way Bearings, One Way Clutch, Overrunning Clutch, Needle Roller Bearings. The components consist of a cage, sprags, and a spring. When turned in the opposite direction, it operates as a clutch rather than a bearing. A one-way roller clutch or sprag is located inside the stator assembly. The combination of their binary nature and how rapidly they change state Roller clutches and sprag clutches can be designed to be either the centrifugally-engaging type or the centrifugally-disengaging type. 1. It is on and holding at low vehicle speeds, and re-routes some oil back to the turbine. mechanically. Compatible with medium loads and easy to install. 95. The outer race has six lobes, and the bearing has a 10 mm inside diameter, a 16 mm outside diameter, and a 10 mm depth. )The sprag clutch is a rolling-type bearing that uses drag rollers, which are activated by a spring that allows the element to rotate freely around another, until the moment the direction is reversed, since at that point it locks and it stop spinning. The sprag design is comprised of a full complement of accurately formed sprags filling the annular space. Technician B says it normally stops fluid flow in both directions. Can be used with either sprocket wheel sets or belt tensioning rollers (sold separately or as complete assemblies). can be replaced with E4OD parts (fig-ure 6). sprag one-way clutch FR series. A band can be used to hold or drive a planetary gearset. This single row needle roller bearing is suitable for applications that support. 4. Single Row. Min. Too much torque makes the sprags tip so much that contact is not maintained. All of the following statements are true with respect to sprag clutch inspection except: They can be only partially disassembled They can be assembled in any direction They have to be serviced as a. Tech B says that the clutch must slip slightly during engagement. How Sprag Clutches Work. Sprag clutch bearings allow your application to turn one way whilst locking in the opposite direction. Technician B says that an overdrive ratio is a ratio where the first number is less than 1. MR Series - Utilises a special sprag cage arrangement to allow high speed overrunning of the outer race. One-way clutches can be either one-way rollers or sprags. Diameter: 25 mm - 110 mm. There are many designs but the common one is a set of balls on ramps. Cao, “Design and analysis of logarithmic spiral type sprag one-way clutch,” Journal of Central South University, vol. The sprag race assembly functions as the outer sprag race and is splined to the 3rd clutch drum (634). 323. When reverse torque is applied, the sprag rollers located between the two elements tilt slightly to lock into position and instantly stop the second. 100°C (Pg. The sprags, fitted in a cage, feature an active profile that ensures engagement or disengagement according to the relative motion of the races. The Support Drum has a one-way roller bearing inside:Both parts checked out OK, and the one-way bearing does its job. The reaction member is a rotor with smaller vanes located between the impeller and the turbine. Who is correct? both The dual mass flywheel has which of the following features? absorbs engine vibration Oil on the. Both operate in a way that they rely on wedging metal between two races. A band can be used to hold or drive a planetary gearset. Allows for a compact design. The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. C6 rear/low, 1966 - Up (retrofitted, so you should discard the snap rings and surrounding washers). The ML Series has a cam and roller structure, and various transmission parts can be easily mounted. Made in USA: Complete Clutch Sets - Amazon. Explain the functions of the torque converter. Estimated Ship Date: Dec 27, 2023 if. one-way roller clutch ML series. Multiple Choice. Chinese one way bearings one way clutch bearings manufacturer, producing one-way rotation clutch bearings, Single Direction, CSK series one-way bearings,CSK8, CSK12,CSK15,CSK17,CSK20,CSK25,CSK30,CSK35,CSK40,B203,B204,B205, Stieber type one-way sprag freewheel clutches. Several different types of one-way clutches are in use, these include: Roller designs; Sprag designs; Spiral designs; Diode designsIt works with some sprung rollers and centrifugal force to grab the inside of a smooth race. units, in order to enable the use of either English or met-ric units. When a ring and pinion fails, it can lead to transmission damage, including roller clutch failure. d. Just a small block and a C4. The figure below shows the general trend. A smooth wheel roller generally consists of three wheels; two large wheels in the rear and one small wheel in the front. . In some cases, we have upgraded, HD, or HP units available. wedge (examples) knife, axe, fork, nail, doorstop. The one on the right in the picture. One way clutch bearings (also known as sprag clutch) are compact, lightweight and operate directly on a shaft. Verify proper operation of the one way clutch. It unlocks, however, using a roll technique in which the inner and outer roller. b. Technician B says that a one-way clutch could be installed upside down and cause the automatic transmission/transaxle to not function correctly. When the "diode" was used, it replaced the roller clutch with a sprag that is inherently weaker. Indexing clutches are often used for applications. About us. Features: CKF-A is a non-contact one way sprag clutch bearing. This motion is controlled, deliberate, and guided by a one-way sprag clutch. An arrow on the lip indicates the rotational direction that locks the bearings. Where Onyx uses a sprag clutch bearing, Box claims that since the one-way bearing has moving rollers inside, it offers less drag, decreased wear, and faster engagement than a sprag clutch bearing. A sprag is a one-way roller clutch, also known as an overrunning clutch. can be reduced by properly cushioning the large ratio change on the 1-2 shift: Never use a 1-2 servo that eliminates the cushion spring. Some guidelines are: 7-Inch Converter - Ultra-high performance from 6000 to 9000 rpm stall speeds. The sprag race assembly functions as the outer sprag race and is splined to the 3rd clutch drum (634). The input can drive the output in a chosen direction and Application / Type: Industrial / General Purpose, Other; Bore. No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. Compatible with medium loads and easy to install. These bearings are good for large orders and low to high torque needs (1 to 2673 Nm). *Output Carrier/3-4 Clutch Hub. d. This type of bearing is usually supplied already filled with grease meaning it can be used straight away and requires little maintenance or additional grease before use. They drive instantly and provide continuous sprag. Whether you know them as a one-way clutch, roller clutch, sprag, or mechanical diode, we have the parts you need and ready to ship. Eventually the impeller and turbine achieve approximately the same speed, and then the one-way clutch releases. one-way roller clutch ML series. Turbulator steels should be here this week and we'll swap them in as well as the sprag, one-way roller clutch and all new thrust bushings and bearings. The type RIZ is an overrunning clutch with the length up to 23 000 Nm. Each sprag is essentially a strut placed between the races in such a way that it transmits power from one race to the other by a wedging action when either race is rotated in the driving direction. What could be the cause? incorrect clutch clearance or incorrect cable adjustment.