1056-0002 Pro Clutch
Contents
1. PRF ra ae ET Ei x i i j i lock nut OA diaphragm clutch spring PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 7 PRO CLUTCH ADJUSTMENT As delivered the Pro Clutch clutch pack requires no adjustment having been set at the factory After the Pro Clutch has accumulated significant mileage it may require some adjustment due to normal wear Use the procedures outlined below if amp when adjustment is required For best performance the diaphragm spring MUST be compressed to within 010 020 of being flat when the shouldered spring retainer nuts have been prop erly tightened bottomed This will provide maximum spring pressure to the clutch pack with minimum hand effort at the handlebar Three clutch springs are available A stock replacement spring black in color a medium spring for street per formance silver in color and a competition spring gold in color for drag race only applications lf the diaphragm spring adjustment requires LESS ARCH If the diaphragm spring adjustment requires IMORE ARCH this can be accomplished by using one or more of the spe this can be accomplished by using one or more of the special cial 020 washers on each of the shouldered nuts photo A 030 washers on the clutch hub studs nuts as pictured The diaphragm spring will be compressed to within 010 to 020 of being flat when correctly installed amp adjusted Ph2. any high performance 1936 1984 Big Twin Harley motorcycle Rivera Primo Inc 12450 Whittier Blvd Whittier CA 90602 TEL 562 907 2600 FAX 562 907 2606 www riveraprimoinc com E mail info1 riveraprimoinc com 1 1108 0007 Revised 2 2012 H PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 2 SAFETY FIRST When performing work on any motorcycle and prior to starting this installation disconnect BOTH battery cables If the motorcycle is on a lift fasten it securely to prevent it from falling Read and become familiar with the Pro Clutch instructions before starting For safety use only the proper tools for this installation STEP 1 This is the Rivera Primo Pro Clutch Get familiar with it before disassembling it for installation Strip the clutch basket of all the OEM clutch components such as bearing cage amp bearings clutch plates pressure plate coil springs etc Note the position of the new lock clips P N1058 0106 1058 0111 pair 1058 0106 individual STEP 2 To prepare the Pro Clutch for installation disassemble the pressure plate assembly and clutch pack while noting the exact sequence of the components for reference during reassembly See the exploded view on page 6 of this installation guide STEP 3 Remove the 6 Allen head bolts and the lock ring at the rear of the adapter Keep track of ALL the Allen bolts STEP 4 Install the Riv
3. clutch hub nut is included in every kit PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 6 1056 0002 1936 1984 Big Twin The following 1056 0002 parts list supercedes all preceding information for Rivera Primo s PC 1000 PC 1000 C amp PC 1000 A Pro Clutch assemblies 1 1 1057 0012 bearing adaptor 2 1 1018 0015 bearing 3 1 1101 0066 large snap ring 4 1 1101 0068 small snap ring 5 1 1057 0013 steel lock ring 6 6 1100 0131 screws for lock ring T 1 2061 0003 steel inner hub 8 1 1061 0012 aluminum outer hub 1 712 9 2 1100 0112 screws for clutch hub 10 4 1100 0113 bolts for clutch hub 11 4 2057 0026 nuts for clutch hub screws 12 1 2057 0030 special clutch hub nut amp seal 13 7 1054 0006 friction clutch plate 14 7 2060 0006 steel clutch plate 047 15 1 1060 0003 steel clutch plate 120 rear 16 1 2058 0001 pressure plate aluminum 17 1 2059 0003 diaphragm clutch spring medium 18 1 2057 0005 clutch adjustment screw 19 1 1057 0004 adjustment screw lock nut 20 2 1058 0106 locking clips 21 1 2059 0200 diaphragm spring retainer 22 4 1057 0015 shouldered nuts for retainer 23 1 2057 0024 washer set 4 and 4 small 10 washers Clutch hub nut PP MESES AR g aie 23 with seal a a Fi A A a mrt tat r i 5 F il i large ID washers
4. PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 1 QUALITY amp PERFORMANCE SINCE 1973 PRO CLUTCH 1056 0002 For All 1936 1984 Big Twin Applications INSTALLATION HOME OF PRIMO BELT DRIVES Congratulations you have just purchased Rivera Primo s Pro Clutch the best clutch upgrade in the world Please follow the directions for a simple trouble free installation If you have any questions about this installation please contact Rivera Primo and a knowledgeable Pro Clutch technician will assist you Thank you for purchasing a Pro Clutch RIVERA PRIMO s PRO CLUTCH for early model 1936 1984 Big Twin motorcycles upgrades the clutch in two ways First by increasing the friction area by almost 50 Second by replacing the coil spring clutch pack with our proprietary diaphragm spring design Diaphragm spring operated clutches have proven to be more durable than typical coil spring clutch packs when utilized in street amp high performance motor vehicle applica tions PRO CLUTCH installs quickly into the existing clutch basket belt or chain by removing the OEM hub and caged loose bearings and installing the PRO CLUTCH hub adapter assembly and clutch pack PRO CLUTCH will easily transmit ALL your motor s horsepower to the transmission without slipping or grab bing Smooth easy hand control makes this high performance PRO CLUTCH formerly PC 1000 A a must for
5. d next flat surfaces facing inward as shown STEP 8 Dab some high quality anti seize on the stud threads of the Pro Clutch hub This will prevent the nuts from sticking and cause the studs to come loose when the Pro Clutch is disassembled PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 5 STEP 9 The diaphragm spring amp spring retainer are installed next Spring retainer goes bevel side in Tighten the shoulder nuts until they bottom completely amp are snug The lock clips 1058 0106 should be installed as pic tured Bend one tab over each nut to keep it tight The diaphragm spring should be compressed to within 010 to 020 of being flat The spring will have a very slight outward bow Spring Retainer SHOULDERED NUTS _____ 010 to 020 Diaphragm Spring pressure plate STEP 10 Install the clutch adjustment screw and adjust the clutch per the instructions in your Harley Davidson service manual N Install the clutch adjuster V Bi Your finished installation will look like this Be sure to bend one of the locking tabs over each shoul der nut to keep them tight Rivera Primo s Pro Clutch for pre Evolution applications eliminates the creep amp chatter associated with early style clutch installations Your early model HD will be easier amp safer to operate with the Pro Clutch installed A special PRO CLUTCH
6. era Primo Pro Clutch hub amp adapter into the OEM clutch basket Use Rivera Primo s Blue thread lock on the Allen bolts and tighten to 80 INCH POUNDS not foot pounds ead Install the adapter into the basket install the lock ring on the rear of the adapter PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 3 STEP 4C Install the clutch basket hub assembly onto the transmis sion main shaft using two drops of Rivera s Blue thread lock or equal and tighten the clutch hub nut to 50 60 foot pounds of torque STEP 5 First plate installed is the 120 steel plate It goes all the way to the rear of the clutch hub STEP 6 Next clutch in is a friction as shown above then steel alternating until all the plates are installed ATTENTION If the clutch is to be operated in an oil bath it is recommended that the friction plates be soaked in primary lubricant for 15 20 min utes Wipe off excess lubricant prior to installation Rivera Pimo recommends using Dextron Ill ATF Automatic Transmission Fluid in the primary for best performance with the Pro Clutch PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 4 Install Steel plate last j i h ig STEP 6A j Last clutch plate to be installed is a steel drive plate ee z Pressure plate STEP 7 The billet aluminum pressure plate is installe
7. n or any other matter with respect to Rivera Primo Inc products PC 1000 A PRO CLUTCH INSTRUCTIONS_PC 1000 A PRO CLUTCH 2A72D0 ax 2 15 12 4 03 PM Page 8 TAPERED SHAFT HUB REMOVER TOOL 1062 0002 Tapered hub removal tool all applications Simply mount the tool on the left hand threads of the transmission main shaft and give the end of the tool a sharp tap with a medium weight hammer and the clutch hub simply pops off Available now for all tapered shaft clutch hubs CLUTCH HUB PULLER eS lt 4 998 Pe 1062 0003 Quickly attaches to most Pro Clutch gt or Primo Belt Drives diaphragm Xe F spring style clutch hub to allow i quick easy removal CLUTCH HUB HOLDER 1062 0001 Engages amp holds clutch hub splines to allow correct torque specifica tion to be applied to the clutch hub nut left hand thread when installing a Rivera Primo Inc 12450 Whittier Blvd Whittier CA 90602 TEL 562 907 2600 FAX 562 907 2606 www riveraprimoinc com E mail info1 riveraprimoinc com 8 H
8. oto C shows a diaphragm spring that is compressed too far This is a diaphragm spring that is correctly adjusted A little day and needs to be adjusted Special adjustment washers be light is showing at either edge because the spring is within added to the clutch hub studs as shown in photo B 010 to 020 of being flat Slightly bowed outward as seen in photo D GENERAL WARRANTY Rivera Primo Inc s sole obligation and the customer s sole remedy is limited to replacement or repair of products free of charge in the event products fail to perform as warranted for a period of one year from actual date of purchase Proof of purchase must accompany any warranty claim In no event shall Rivera Primo Inc be liable for claims for any other dam ages whether direct incidental foreseeable consequential or special including but not limited to loss of use revenue or profit whether based upon warranty contract tort including negligence or strict liability arising in connection with the sale or the failure of Rivera Primo Inc products to perform in accordance with the stated specifications Rivera Primo Inc makes no other warranty of any kind whatsoever and specifically disclaims and excludes all other war ranties of any kind or nature whatsoever directly or indirectly express or implied including without limitation as to the suitabilitly productivity durability fitness for a particular purpose or use merchantability conditio
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