ALL-MAKES HEAVY-DUTY CLUTCHES Alliance Truck Parts has over 30 product lines that serve the commercial transportation industry with reliable new and remanufactured parts and accessories for all makes and all models 1 to keep trucks and buses on the road. All Alliance Truck Parts meet or exceed OES specifications for quality, fit and finish and are backed by a nationwide warranty 2, which means you don t have to trade quality for price.
ALL-MAKES HEAVY-DUTY CLUTCHES Illustrations and photographs used in this catalog may vary slightly from the actual product. Prototype samples are sometimes used for photography. The production parts may vary slightly. Availability of products shown in this catalog is subject to change without notice.
PARTS NUMBERING SYSTEM PARTS NUMBERING SYSTEM The Alliance Truck Parts numbering system is set up systematically: Example ABP N25 1551850EZ. PARTS NUMBERING SYSTEM All parts numbers in this program contain the prefix ABP and N25 (the company assigned code for this program). The number following the N refers to the part segment and is different for each. The last six digits are assigned based on part and design. All parts in the catalog are set up with an Alliance Truck Parts number. In the back of this catalog you will find an extensive cross-reference list. This will help link another manufacturer s part to an Alliance ABP number.
WARRANTY WARRANTY Alliance truck parts are backed by a 1-year/unlimited-mile standard warranty. WARRANTY
NOTES
TABLE OF CONTENTS 1 ANGLE SPRING CLUTCHES PAGE 2 HEAVY-DUTY ANGLE SPRING CLUTCHES...3 MEDIUM-DUTY ANGLE SPRING CLUTCHES...4 2 3 4 EASY ASSIST CLUTCHES HEAVY-DUTY EASY ASSIST CLUTCHES...7-9 MEDIUM-DUTY EASY ASSIST CLUTCHES...10 INSTALLATION & MAINTENANCE INSTALLATION & MAINTENANCE... 13-17 CROSS-REFERENCE PAGE 6 PAGE 12 PAGE 18 CROSS-REFERENCE...19-21 TABLE OF CONTENTS
1 NOTES
ANGLE SPRING CLUTCHES 1 2
ANGLE SPRING CLUTCHES FEATURES & BENEFITS 1 HEAVY-DUTY ANGLE SPRING CLUTCHES SPECIFICATIONS Reliable lock-strap adjustment mechanism, which enables trouble-free clutch adjustments Velvet Touch ceramic facing, an aftermarket industry standard Damper package to absorb engine vibration Constant plate load and isolated pressure springs for smooth performance FLYWHEEL BORE 8.5 TORQUE RATING NO. OF DISCS 2 NO. OF FACINGS 4 DISC TYPE NO. OF DAMPER SPRINGS 10 ABP N25 1551850 FLYWHEEL BORE 10 TORQUE RATING NO. OF DISCS 2 NO. OF FACINGS 4 DISC TYPE NO. OF DAMPER SPRINGS 7 1,650 lb-ft Dampened ceramic facings with free travel 1,850 lb-ft Dampened ceramic facings with two coaxial springs 3
ANGLE SPRING CLUTCHES SPECIFICATIONS ABP N25 14620SB FLYWHEEL BORE TORQUE RATING NO. OF DISCS 1 NO. OF FACINGS DISC TYPE NO. OF DAMPER SPRINGS 8 ABP N25 14860SB FLYWHEEL BORE TORQUE RATING NO. OF DISCS 2 NO. OF FACINGS DISC TYPE NO. OF DAMPER SPRINGS 7+1 ABP N25 14860ST FLYWHEEL BORE TORQUE RATING NO. OF DISCS 2 NO. OF FACINGS DISC TYPE Pot Style 620 lb-ft 3 Super Buttons (3SB) Dampened ceramic facing, coaxial, free travel Pot Style 860 lb-ft 3 Super Buttons (3SB) Dampened ceramic facing, coaxial, low rate Pot Style 860 lb-ft 3 Trap NO. OF DAMPER SPRINGS 7+1 Dampened ceramic facing, coaxial, low rate 1 MEDIUM-DUTY ANGLE SPRING CLUTCHES 4
5 NOTES
EASY ASSIST CLUTCHES 2 6
EASY ASSIST CLUTCHES FEATURES & BENEFITS 2 HEAVY-DUTY EASY ASSIST CLUTCHES SPECIFICATIONS Reliable lock-strap adjustment mechanism, which enables trouble-free clutch adjustments Velvet Touch ceramic facing, an aftermarket industry standard Damper package to absorb engine vibration Contain assist springs to help reduce pedal effort Pedal effort decrease of 35% compared to Angle Spring design FLYWHEEL BORE 8.5 TORQUE RATING DISCS 2 FACINGS 4 DISC TYPE DAMPER SPRINGS 10 ABP N25 1551850EZ FLYWHEEL BORE 10 TORQUE RATING DISCS 2 FACINGS 4 DISC TYPE DAMPER SPRINGS 7 1,650 lb-ft Dampened ceramic facings with free travel 1,850 lb-ft Dampened ceramic facings with two coaxial springs ABP N25 1552050EZ FLYWHEEL BORE 10 TORQUE RATING DISCS 2 FACINGS 4 DISC TYPE DAMPER SPRINGS 7 2,050 lb-ft Dampened ceramic facings with two coaxial springs 7
EASY ASSIST CLUTCHES SPECIFICATIONS FLYWHEEL BORE 7 TORQUE RATING DISCS 2 FACINGS DISC TYPE DAMPER SPRINGS 8 CO FLYWHEEL BORE 8.5 TORQUE RATING DISCS 2 FACINGS DISC TYPE DAMPER SPRINGS 10 ABP N25 1551700EZ FLYWHEEL BORE 10 TORQUE RATING DISCS 2 FACINGS DISC TYPE DAMPER SPRINGS 7 1,400 lb-ft 4 Super Buttons (4SB) Dampened ceramic facing, coaxial, free travel 1,650 lb-ft 4 Super Buttons (4SB) Dampened ceramic facings with free travel 1,700 lb-ft 4 Super Buttons (4SB) Dampened ceramic facing 2 HEAVY-DUTY EASY ASSIST CLUTCHES ABP N25 1551850EZ6SB FLYWHEEL BORE 10 TORQUE RATING 1,860 lb-ft DISCS 2 FACINGS 6 Super Buttons (6SB) DISC TYPE Dampened ceramic facing, coaxial DAMPER SPRINGS 7 8
EASY ASSIST CLUTCHES SPECIFICATIONS 2 HEAVY-DUTY EASY ASSIST CLUTCHES ABP N25 1552050EZ6SB FLYWHEEL BORE 10 TORQUE RATING 2,050 lb-ft DISCS 2 FACINGS 6 Super Buttons (6SB) DISC TYPE Dampened ceramic facing, coaxial DAMPER SPRINGS 7 9
EASY ASSIST CLUTCHES SPECIFICATIONS ABP N25 141400SB FLYWHEEL BORE TORQUE RATING NO. OF DISCS 2 NO. OF FACINGS DISC TYPE NO. OF DAMPER SPRINGS 8 Pot Style 1,400 lb-ft 4 Super Buttons (4SB) Dampened ceramic facing, coaxial, free travel 2 MEDIUM-DUTY EASY ASSIST CLUTCHES 10
11 NOTES
INSTALLATION & MAINTENANCE 3 12
INSTALLATION & MAINTENANCE PRE-INSTALLATION TIPS 3 INSTALLATION & MAINTENANCE Inspect the transmission front bearing cap for wear. Replace if the bearing cap is worn Clean the transmission input shaft and inspect for wear and nicks Check the splines for twist: - Take a driven disc and place it on input shaft, then slide the full length of the splines - If the disc hangs up on the splines, replace the transmission input shaft Pilot bearing installation - Inspect the pilot on the end of the input shaft for wear. Replace the input shaft if worn - Check to see if the pilot bearing will fit onto transmission input shaft prior to installing it into the flywheel Release fork/cross-shafts and bushings - Inspect the release fork for wear and replace if signs of wear are present - Replace clutch housing cross-shafts and bushings INSTALLATION INSTRUCTIONS 1 MEASURE ENGINE FLYWHEEL HOUSING AND FLYWHEEL Engine flywheel housing and flywheel must meet these specifications or there will be premature clutch wear. Remove the old pilot bearing. All gauge contact surfaces must be clean and dry. Use a dial indicator and check the following: Flywheel Face Runout Secure dial indicator base to flywheel housing face. Put gauge finger in contact with flywheel face near the outer edge. Rotate flywheel one revolution. Maximum runout is.008" (.20 mm). Pilot Bearing Bore Runout Secure dial indicator base to flywheel housing face. Position gauge finger so that it contacts pilot bearing bore. Rotate flywheel one revolution. Maximum runout is.005" (.13 mm). Flywheel Housing I.D. Runout Secure dial indicator base to crankshaft. Put gauge finger against flywheel housing pilot I.D. Rotate flywheel one revolution. Maximum runout is.008" (.20 mm). Flywheel Housing Face Runout Secure dial indicator base to flywheel near the outer edge. Put gauge finger in contact with face of flywheel housing. Rotate flywheel one revolution. Maximum runout is.008" (.20 mm). 13
INSTALLATION & MAINTENANCE INSTALLATION INSTRUCTIONS 2 INSTALL CLUTCH TO FLYWHEEL For 15.5 clutch only: 3 1 Measure the flywheel bore. Verify that the damper will fit into the flywheel bore. 7" (8-spring) 8.5" (10-spring) 10" (7-spring) 2 Insert the aligning tool through bearing. 8 1 5 4 3 Install the disc onto aligning tool. Follow the orientation instructions on the disc. 7 Install the lock washers and mounting bolts (7/16" x 14 UNC x 2 1/4" grade 5) finger tight. Replace studs with lockwashers and bolts. 3 6 2 7 4 Install the intermediate plate into slots on the clutch cover. Flywheel side must face the flywheel. 8 5 Progressively tighten mounting bolts in a crisscross pattern starting with a lower bolt. Torque to 40 50 lb-ft (54 68 N m). Install the second disc onto aligning tool. Follow the orientation instructions on the disc. 6 Install two 7/6" x 14 UNC x 5" studs into upper mounting holes. Install assembled clutch. INSTALLATION & MAINTENANCE 9 Remove 4 10 Remove the shipping aligning tool. bolts. CAUTION: An assembled clutch weighs about 150 lb (68 kg). Avoid the risk of injury. Use proper equipment when lifting a clutch. 14
INSTALLATION & MAINTENANCE INSTALLATION INSTRUCTIONS 3 INSTALLATION & MAINTENANCE 3 INSTALL TRANSMISSION Check the transmission for wear. Replace any worn components. Transmission Bearing Retainer Cap A worn/rough bearing retainer cap may cause the clutch brake to wear prematurely. Release Yoke Worn fingers can cause bushing wear and yoke interference when the pedal is down. Cross-Shaft and Bushings Excessive wear at these points can cause side loading on the sleeve bushing, bushing failures and yoke bridge contact with the clutch when the pedal is down. Input Shaft Wear (roughness) can reduce sleeve bushing life and cause it to come out. Fasten Transmission to Flywheel Housing Input Shaft Splines Any wear on the splines will prevent the driven discs from sliding freely, causing poor clutch release (clutch drag). Slide the discs full length of shaft to check for twisted shaft splines. Clutch Brake Replace. Measure Input Shaft Length should be 8.657" (219.89 mm) nominal, and not greater than 8.71" (221.23 mm). Ref. 1990 SAE handbook 4:36.106. Replace the transmission bearing retainer cap if length is greater than 8.71" (219.89 mm). 1 Put the transmission in gear. Be sure new clutch brake has been installed. 2 Make sure that the yoke fingers remain in the up position until they are over the release bearing housing. 3 Position the transmission so it is square to and aligned with the engine. 4 Mesh splines by moving transmission forward and rotating the output shaft. Do not use excessive force. Do not let the transmission hang unsupported in the discs. 5 Install the mounting bolts and torque to OEM specs. 15
INSTALLATION & MAINTENANCE INSTALLATION INSTRUCTIONS 4 SET UP AND LUBRICATE Adjust Bearing Position Verify Clutch Brake Squeeze Verify Free-Play 3 1 Measure the distance between the release bearing and the clutch brake. The correct distance should be.500" -.560" (12.70-14.22 mm). If correct go to Step 3. Release bearing.500".560" (12.70 14.22 mm) Transmission Clutch brake 2 To change bearing position, you must internally adjust the clutch. Push and hold the pedal down when adjusting. Remove the lockstrap, then rotate adjusting lugs left to move bearing toward transmission. Replace the lockstrap. 3 4 Insert.010" (.25 mm) feeler gauge between the release bearing and the clutch brake. Press the pedal down to clamp the gauge. If the gauge does not clamp, adjust the linkage to achieve clutch brake squeeze, then recheck Step 3. Release bearing Feeler gauge Clutch brake Slowly let up on the pedal and check the pedal position at the moment the gauge can be removed. If the pedal is less than 1/2" (12.7 mm) or more than 1" (25.4 mm) from the floor when the gauge can be removed, readjust the linkage. (Repeat Steps 3 and 4.) 5 Check the distance between the yoke tips and bearing wear pads. This distance should be 1/8" (3.2 mm). Yoke tips Bearing wear pads 6 Do not change the bearing position. To change the yoke finger and bearing wear pads clearance, adjust the upper pedal stop to raise or lower the pedal in the cab. Upper pedal stop 1/8" (3.2 mm) INSTALLATION & MAINTENANCE 1/2" 1" (12.7 25.4 mm) Lockstrap Adjusting Lug Lubricate Use a lithium soap-based grease with a minimum of 325 F (163 C) operating range meeting N.L.G.I. grade 1 or 2 specs. Apply ample grease that visibly exits the opening and contacts the transmission shaft. This will lube the clutch brake when the pedal is pressed. 7 Apply grease to the input shaft and yoke fingers. 8 Apply grease to the cross-shaft bushings and linkage pivot points. Transmission 9 Grease the release bearing. 16
INSTALLATION & MAINTENANCE MAINTENANCE TIPS 3 INSTALLATION & MAINTENANCE 1 LUBRICATION Use NL GI #2 lithium complex Grease every 20,000 miles or two months for Line Haul Grease every 250 hours or one month for Severe Service (Vocational) 2 CLUTCH ADJUSTMENT Adjust the clutch release bearing to compensate for disc wear Maintain.500 -.560 between the bearing and clutch brake Maintain.125 between the release fork and release bearing wear pads 17
CROSS-REFERENCE 4 18
CROSS-REFERENCE ACE HALDEX COMP. P/N ALLIANCE P/N COMP. P/N ALLIANCE P/N 4 107091-81B EZ107237-4CB EZ107683-5CB0 EZ107686-2CB ABP N25 14860ST ABP N25 14620SB ABP N25 14860SB N10734222 N10734222CE N10739174C ABP N25 14860SB ABP N25 14860SB CO CROSS-REFERENCE EZ108050-59B EZ108925-82H EZ208391-93 EZ208925-82B EZ2089391-74B COMP. P/N SP 107034 61B ABP N25 141400SB ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 1552050EZ ABP N25 1552050EZ6SB CO ABP N25 1551700EZ CO EATON ALLIANCE P/N ABP N25 14620SB SP 107091 74B SP 107237 10 SP 108050 59B SP 108391 74AM SP 108391 81AM SP 108925 20AM SP 108925 25AM SP 108925 82AM ABP N25 14860ST ABP N25 141400SB CO ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 1552050EZ ABP N25 1552050EZ6SB ABP N25 1551700EZ N1076835 N1076835CE N10805059C N10839174 N10839174C N10839181 N10839181C N10892520TM N10892525TM N10892582 N10892582C RC018CX RC018EZCX RC018EZX RC018X ABP N25 14620SB ABP N25 14620SB ABP N25 141400SB CO CO ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 1552050EZ ABP N25 1552050EZ6SB ABP N25 1551700EZ ABP N25 1551700EZ CO CO CO CO RC390CZ ABP N25 141400SB HALDEX RC390EZCX ABP N25 141400SB COMP. P/N ALLIANCE P/N RC597CX N10705059C ABP N25 141400SB RC597DCX N10709174 CO RC597EZCX RC597EZDCX N10709181 RC700EZX ABP N25 1551700EZ N10709181C RC700X ABP N25 1551700EZ N10723710 N10723710CE ABP N25 14860ST ABP N25 14860ST RC892520EZX ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB The above cross-reference was determined using manufacturers specifications for torque rating and flywheel bore size. 19
CROSS-REFERENCE HALDEX MID-AMERICA COMP. P/N ALLIANCE P/N COMP. P/N ALLIANCE P/N RC892525EZX COMP. P/N ABP N25 1552050EZ ABP N25 1552050EZ6SB IATCO ALLIANCE P/N MU-127390-DSCB MU-127597-DSCB MU-127747-DSCB MU-129044-DSCB ABP N25 141400SB ABP N25 14620SB ABP N25 14860ST 4 NMU051-184-1 NMU059-022-1 NMU060-022-5-A NMU061-092-5-A NMU390-184-1 NMU455-044-4 NMU455-147-6 NMU597-064-4 NMU597-094-4 ABP N25 141400SB ABP N25 14620SB ABP N25 14860ST ABP N25 14860SB ABP N25 141400SB ABP N25 1551700EZ ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 1552050EZ ABP N25 1552050EZ6SB CO MU-129055-DSCB MU-129698-SB-7 MU-129698-SB-10 MU-145390-DSCB MU-1555597-DSCB MU-155698-SB-7 MU-155698-SB-10 MU-155698-12-SB-7 ABP N25 14860SB ABP N25 1551700EZ CO ABP N25 141400SB ABP N25 1551700EZ ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB CO ABP N25 1552050EZ ABP N25 1552050EZ6SB CROSS-REFERENCE NMU705-064-4 NMU898-094-4 NMU898-147-6 NMU989-064-4 CO ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 1552050EZ ABP N25 1552050EZ6SB CO COMP. P/N CL10705059 CL10709174 CL10709180 CL107091802 CL1072378 TRP ALLIANCE P/N ABP N25 141400SB CO ABP N25 14860ST COMP. P/N MERITOR ALLIANCE P/N CL10723784 CL10734211 ABP N25 14860ST ABP N25 14860SB R15010 R151150 R151406 R151456 R151650 ABP N25 1551400 ABP N25 1551400EZ ABP N25 1551400 ABP N25 1551400EZ ABP N25 1551850 ABP N25 1551850EZ CL107342114 CL1076835 CL10792582 CL10805059 CL10839174 CL10839181 ABP N25 14860SB ABP N25 14620SB ABP N25 1551700EZ ABP N25 141400SB CO R153705 ABP N25 1551850 ABP N25 1551850EZ CL10892515 ABP N25 1552050EZ ABP N25 1552050EZ6SB R157755 ABP N25 1552050EZ CL10892582 ABP N25 1551700EZ The above cross-reference was determined using manufacturers specifications for torque rating and flywheel bore size. 20
CROSS-REFERENCE 4 COMP. P/N CL11839174 CL11839181 CL11892515 TRP ALLIANCE P/N CO ABP N25 1552050EZ ABP N25 1552050EZ6SB CROSS-REFERENCE CL11892582 COMP. P/N M-127747-6F5 M-129044-10F5 SP-AN-108034-6G5 SP-AN-1083915G5 SP-AN-108925-11G5 SP-AN-108935-11W5 SP-AN-129055-6G5-NSR ABP N25 1551700EZ UNIQUE ALLIANCE P/N ABP N25 14620SB ABP N25 14860ST ABP N25 141400SB CO ABP N25 1551700EZ ABP N25 1551850 ABP N25 1551850EZ ABP N25 1551850EZ6SB ABP N25 14860SB The above cross-reference was determined using manufacturers specifications for torque rating and flywheel bore size. 21
NOTES 22
Find your nearest dealer at alliancetruckparts.com DTNA/PSM-M-981. Specifications are subject to change without notice. Copyright Daimler Trucks North America LLC. All rights reserved. Alliance Truck Parts is a brand of Daimler Trucks North America LLC, a Daimler company. 1 For nearly all heavy-duty truck makes and models. 2 See warranty for complete details and limitations.