Documents, Manuals, Service Bulletins and …

1 Documents, Manuals, Service Bulletins and Screensavers This Document Was Scanned By Tom King For Use By Anyone in the Pursuit and Advancement Of Antique And Classic Boating Questions regarding this document can Be Emailed to Me At: Service ItPRICE ,_s3. 00, IVelvet drive Marine Installation ManualWarner GearD~ws~orl of Borg-Warner Corporation2 3171286-6100 TelexE$27-491 TABLE OF : ..1 SERIES lo-17 AND lo-18 Service DRAWING FOR SHOWING IN-LINE MODELS AND MISCELLANEOUS DRAWING FOR V- drive SHOWING V- drive MODELS AND MISCELLANEOUS DRAWING FOR DROP CENTER SHOWING DROP CENTER MODELS AND MISCELLANEOUS INSTALLATIONS SHOWN COOLER TO APPLICATION.

2 21 DAMPER 3 ROUTINE CHECKS AND ENGINE, TRANSMISSION AND PROPELLER , IFOREWORDThis manual covers all Velvet drive @ transmissions. Data is given to assist you in selecting the proper transmission, cooler,damper drive and propeller shaft coupling. Proper installation is a requirement for a valid warranty. Instructions for makinga proper installation are included. Better Service and extended product life can be expected when the recommended corn-ponents are used and properly CHART HAS BEEN ADDED TO HELP IDENTIFY EARLY VELVET drive following are identification markings for Warner gear Division Marine Gears:MODEL 70Y o NO.

3 *..010414051505A15A06160717 MODEL72 FORWARDHAND OF1-D. I ,523 to1 Both*These numbers are stamped on serial number plates preceding the serial & lo-18 UNITSThe 1: 1 ratio units in the 1 O-l 7 and 1 O-l 8 series are identical except for the nameplate to the 71 C and 72C units whichthey repalce. The nameplate was changed to be consistent with reduction units of these forward and reversing portion of the reduction units of the IO-I 7 and IO-I 8 units is the same as the 71 C and 72C unitswhich they replaced.

4 The reduction portion of the 1 O-1 7 and I O-l 8 units was changed to include a compression sleeve betweenthe two tapered bearing components. Tightening the coupling nut causes the sleeve to be compressed, allowing the taperedbearing to be preloaded. A bearing retainer is not used and the rear oil seal is pressed into the reduction reduction sun gear is pinned to the housing of 71 C and 72C : 1 units. The snap ring holds the sun gear to an adapterplate which is bolted to the reduction housing of 1 O-l 7 and 1 O-l 8 reduction units.

5 An oil baffle is bolted to the reductionof : 1 and : 1 reduction units of the 1 O-l 7 and 1 O-l 8 series IMPORTANT -SERIES IO-17 AND IO-18 Service INSTRUCTIONSP ractically all information which has been written for the 71 C and 72C Velvet drive transmissions applies to the IO-I 7 and1 O-l 8 assemblies. Use the appropriate instructions given in the 71 C and 72C Service manuals when servicing the 1 O-l 7 andIO-18 transmissions. Use instructions given below for assembling the bearings and output shaft into the reduction two bearing cups into the reduction housing.

6 Place rear bearing cone into the rear bearing cup. Press the oil seal into thereduction housing until rear face of oil seal is flush with rear face of bore in housing. Press the front bearing cone over outputshaft and against face of shaft. Assemble the bearing sleeve over shaft and against cone. Lower the reduction housing over shaftcomponents. Grease lips of oil seal and install the coupling and nut to the output reduction housing and attached parts on a suitaJ.$e block placed under the carrier or other parts attached to the outputshaft so that the reduction housing can be rotated as the coupling nut is being tightened.

7 A tool should be used to hold thecoupling while the output shaft nut is being tightened. A helper should rotate the reduction housing and the coupling nutshould be tightened until an increase in effort required to turn the reduction housing is the reduction housing on its side and use a torque wrench to turn the output shaft through the bearings to check thebearing drag caused by the bearings being preloaded. A maximum of 45 lb-ins ( Nm) but perferably 15 to 30 lb-ins ( Nm) torque should be required to rotate the output shaft through the oil seal and properly preloaded bearings.

8 A newbearing spacer should always be used after the output shaft nut has been loosened after being properly preloaded. If the spacermust be reused, always go to a slightly higher preload than the sleeve had been - SEE LATE Bulletins ON THESE A PROPER VELVET DRIVEO ptimum performance can only be obtained when all com-ponents are properly selected for the application. Appli-cations having components which are excellent for a par-ticular use may be completely unsuitable for another considerations for component selection are discussedin this manual .

9 Specific information is given for the variousVelvet drive models. Reference to various forms will bemade to help you find information which is not ROTATIONT ransmission selection will be simplified when the followingmethod is used to describe engine rotation. This methodmay not agree with the engine manufacturers for des-cribing engine the end of the engine on which the transmission ismounted and describe rotation as clockwise if the enginerotates clockwise. Describe the engine rotation as counter-rotating if the engine rotates ROTATIOND escribe transmission input and output shaft rotation asclockwise or counterrotating (counterclockwise)~hen stand-ing behind the transmission coupling facing towards the in-put or engine end ot the Velvet drive units except the :l In-Line andCR2 units may be used behind engines having eitherrotation; however, the pump must be indexed for thedesired rotation.

10 The reduction unit planetary carrier is different for opposite rotating :l In-Line units andearly failure will occur on these units if they are drivenin the wrong output shaft rotates in the same direction or in theopposite direction to the input shaft depending upon thetransmission assembly; therefore, it is best to study thecharts which show shaft rotation to determine the PUMP INDEXINGThe transmission front adapter and pump housing are de-signed to permit the pump to be mounted in either of twopositions.