Technical Bulletins
Technical Bulletins
LB120 - Critical Disc/Flywheel Match
Bulletin Intro: When replacing the clutch, match the disc to the flywheel prior to installation.
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LB122 - Jeep Release Problems
Bulletin Intro: Excessive wear or misalignment at any of the release mechanism components will cause insufficient slave cylinder travel.
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LB127 - Taurus SHO Clutch/Flywheel Match
Bulletin Intro: Referenced models were originally equipped with a 9 1/4-inch clutch.
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LB129 - Ford/Mercury Aluminum Bearing Retainer Wear Problems
Bulletin Intro: The aluminum bearing retainer on referenced vehicles can wear, causing the release bearing to bind.
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LB132 - Chevrolet, GMC and Dodge Truck Release Problems
Bulletin Intro: Use of oversized lock washers on the clutch mounting bolts of these trucks with 12-inch clutches can cause release problems.
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LB133 - Critical Release Bearing/Fork Match
Bulletin Intro: Release bearing/fork combinations differ among models, and the parts are not interchangeable.
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LB134 - Release Bearings Replacement
Bulletin Intro: When installing a pull-type clutch with a release plate and wire ring, cycle the clutch prior to start up to ensure the circlip is fully seated under the tabs of the diaphragm spring.
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LB135 - Preventing Squeaks
Bulletin Intro: Insufficient lubrication between the fork and the ball stud may be misdiagnosed as a release bearing problem.
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LB140 - Hard Pedal/Destroyed Clutch
Bulletin Intro: These vehicles were originally equipped with a metal-lined release bearing, which causes heavy galling and scoring at the contact surface of the aluminum bearing retainer.
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LB145 - Installation of Release Bearing and Sleeve
Bulletin Intro: Vehicles with MTX transmission have a one-piece aluminum housing with integral bearing retainer prone to severe wear.
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LB146 - 12-inch Clutch Upgrade
Bulletin Intro: LuK offers a 12-inch clutch upgrade, recommended for all non-turbos and vehicles equipped with aftermarket turbochargers.
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LB149 - Avoid Engine Sensor Damage
Bulletin Intro: Excessive flywheel machining and installation of the wrong mounting bolts can damage the crankshaft position sensor.
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LB150 - Clutch Chatter Caused by Improper Driveshaft Angle
Bulletin Intro: Chatter at takeoff may be caused by extreme driveshaft angle between the transmission and the differential.
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LB151 - No Release
Bulletin Intro: The roll pins securing the release fork to the cross shaft can fatigue and break.
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LB152 - Hard Pedal
Bulletin Intro: The release bearing cross shaft is supported by plastic bushings in the transaxle.
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LB153 - Growling Noise
Bulletin Intro: A “growling” noise may be heard when the clutch is either released or engaged at higher engine speeds.
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LB154 - Premature Clutch Wear
Bulletin Intro: Premature clutch wear may be caused by insufficient clearance between the bell housing and slave cylinder.
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LB155 - Clutch Slippage
Bulletin Intro: To avoid clutch slippage, install a new master cylinder, LuK part #LMC250, and return spring, Nissan part #46585-30P16.
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LB157 - Hard Shifting
Bulletin Intro: Release problems have been caused by the disc binding on the input shaft.
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LB158 - Squeals When Cold
Bulletin Intro: In vehicles with hydraulic release systems, the release bearing is in constant contact with the clutch diaphragm fingers.
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LB161 - Dodge Cummins Turbo Diesels
Bulletin Intro: This bulletin describes the options available for the above referenced vehicles and the combination of parts you may encounter during replacement.
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LB163 - Internal Slave Cylinders
Bulletin Intro: Slave cylinders located inside the bell housing require special handling to guarantee proper operation.
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LB164 - One Piece Bearing
Bulletin Intro: The referenced part numbers contain a one-piece release bearing and plastic sleeve to replace the original two-piece design, which contained a short (approximately 1-inch) steel spacer inside the internal slave cylinder.
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LB165 - Bolt Holes on Clutches Designed for Multiple Applications
Bulletin Intro: Referenced part numbers contain a diaphragm spring clutch that replaces the original coil spring clutch.
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LB167 - Saab Installation Tool
Bulletin Intro: These LuK RepSets contain an installation tool, CT-1008, to assist in clutch removal and installation.
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LB170 - Repair for Worn Bearing Retainer
Bulletin Intro: LuK RepSet #07-069 can be used in place of #07-010 on referenced models.
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LB171 - No Release
Bulletin Intro: Referenced applications require special procedures to bleed the hydraulic system properly.
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LB172 - No Release
Bulletin Intro: Referenced vehicles were prone to no release, caused by a defective hydraulic release system.
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LB176 - LuK Solid Flywheel Option
Bulletin Intro: This solid flywheel option is designed to replace the original equipment dual-mass flywheel.
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LB177 - Hard Pedal Concerns
Bulletin Intro: Hard pedal and scraping noise while actuating the clutch pedal may be caused by failure of the clutch pedal return spring.
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LB178 - Replace Slave Cylinder to Eliminate Hard Pedal/Release Problems
Bulletin Intro: Hard pedal/release problems may result from leaks in the internal seal of the slave cylinder.
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LB179 - Release Bearing Installation
Bulletin Intro: The release bearing fork/combination on many General Motors applications makes it very easy to install the parts incorrectly with the leaf spring clip of the fork above the bearing collar.
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LB180 - Diagnosing Slipping and Chatter
Bulletin Intro: Slipping or chattering conditions result from oil contamination of the disc friction material.
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LB181 - Flywheels Require Balance Weights
Bulletin Intro: Chevrolet Corvettes manufactured from 1989 to 1996 were equipped with a dual-mass flywheel, which cannot be resurfaced and must be replaced.
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LB182 - Solid Flywheel Option
Bulletin Intro: LuK offers a solid flywheel to replace the original equipment dual-mass flywheel in the above listed vehicles.
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LB183 - LuK Flywheel Must Be Installed
Bulletin Intro: Referenced LuK RepSets contain a clutch, disc and flywheel, engineered to install as a matched set.
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LB187 - Abrupt Engagement on Heavy-duty Discs
Bulletin Intro: This LuK RepSet contains a heavy-duty disc with cerametallic friction material.
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LB188 - LuK Solid Flywheel Option
Bulletin Intro: This solid flywheel option is designed to replace the original equipment dual-mass flywheel.
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LB189 - Remove Dowel Pins Prior to Installation
Bulletin Intro: Prior to installation of this LuK RepSet, you must either resurface or replace the dual-mass flywheel.
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LB190 - How to Bleed Slave Cylinders Without Bleed Screws
Bulletin Intro: The slave cylinder is manufactured without a bleed screw to purge air.
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LB191 - Flywheel Replacement Is Required
Bulletin Intro: The clearance between the disc damper and the flywheel-to-crankshaft bolt heads on this application is minimal.
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LB192 - Do Not Lubricate!
Bulletin Intro: The release bearing and pre-lubricated internal slave cylinder are designed to operate without any additional lubrication.
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LB194 - Release Bearing Installation Procedure
Bulletin Intro: The slave cylinder you remove from the vehicle will appear similar to the one of the two original-equipment designs shown.
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LB195 - 13-inch Flywheel Upgrade for Dodge Cummins Turbo Diesels
Bulletin Intro: LuK’s 13-inch flywheel upgrade is engineered specifically for Cummins-powered Dodge trucks.
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LB196 - Flywheel Torque Specifications
Bulletin Intro: LuK aluminum flywheels include clutch to flywheel mounting bolts.
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LB197 - Important Installation Information
Bulletin Intro: The self-adjusting clutch in the above-referenced LuK RepSets includes a shipping plate, which must not be removed prior to installation.
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LB198 - John Deere® 5000 Series Tractors
Bulletin Intro: LuK is pleased to offer replacement clutches for American-built
John Deere 5000 Series tractors.
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LB199 - Clutch Installation Procedure
Bulletin Intro: These vehicles featured a sealed hydraulic release system and a concentric slave cylinder (CSC), which does not include a bleeder valve.
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LB204 - LuK Flywheel Must Be Used
Bulletin Intro: These LuK RepSets are engineered for use only with
LuK flywheel #LFW140.
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LB207 - Noise and Premature Clutch Wear
Bulletin Intro: Referenced applications may exhibit signs of premature
clutch wear or produce a clunk or rattle noise while the
vehicle is in neutral and the clutch pedal is disengaged.
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LB209 - Squeaking Noise
Bulletin Intro: Referenced applications may produce a squeaking noise
while the clutch pedal is actuated or released.
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LB210 - Concentric Slave Cylinder
Bulletin Intro: The design of the LSC272 slave cylinder has changed.
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