INSTRUCTIONS - Harley
Contents
1. HARLEY DAVIDSON J01486 INSTRUCTIONS REV 3 23 99 Kit Number 25446 99 SCREAMIN EAGLE TWIN CAM 88 CAM DRIVE SPROCKET UPGRADE KIT General This cam drive sprocket upgrade kit is designed for installation on all Twin Cam 88 engines equipped with Screamin Eagle splined camshafts See Service Parts page for kit contents NOTE A Service Manual for your motorcycle is available from your Harley Davidson Dealer Awarnine The rider s safety depends on the correct installation of this kit Follow the procedures listed in this Instruction Sheet and in the appropriate Service Manual If the procedures are not within your capabilities or if you do not have the correct tools have your Harley Davidson dealer perform the installation Failure to follow procedures could result in death or serious injury To avoid accidental start up of vehicle and possible personal injury disconnect the battery cables negative cable first before performing any of the following procedures If the battery should contact ground with the negative cable installed the resulting sparks may cause a battery explosion resulting in death or serious injury Gasoline is extremely flammable and highly explosive under certain conditions Do not smoke or allow open flame or sparks anywhere in the area when draining or servicing the fuel system Drain gasoline into approved gasoline container only Failure to follow these instructions coul2. SMOTOR o Part No 25446 99 Date 3 99 Service Parts Twin Cam 88 Sprocket Upgrade Kit i01337a eps 7 KT 7 A 2 a aa QO LS us AH Nee V A 1 ae Le Item Description Part No Item Description Part No 1 Sprocket cam drive 34 tooth 1 25716 99 2 Spacer 230 thickness 25722 99 Spacer 240 thickness 25723 99 Spacer 250 thickness 25721 99 Spacer 260 thickness 25719 99 Spacer 270 thickness 25717 99 J01486 3 0f 3
3. Loctite 262 Red may result in a joint that will not maintain proper clamp load and may loosen under certain circumstances If the joint becomes loose engine damage could occur c Apply a thin film of clean H D 20W50 engine oil to both sides of flat washers d Start flange bolt with flat washer to secure crank sprocket to end of crankshaft e Start flange bolt with flat washer to secure primary cam sprocket to end of camshaft f See Figure 1 Position CRANKSHAFT CAMSHAFT SPROCKET LOCKING TOOL HD 42314 between the crank and primary cam sprockets to prevent rotation The handle of the tool is stamped Crank and Cam to ensure proper orientation g Tighten the crank and primary cam sprocket flange bolts to 15 ft lbs 20 3 Nm h Loosen both flange bolts one full turn i Tighten the crank flange bolt to 24 ft lbs 32 5 Nm final torque 1 of 3 j Tighten the primary cam sprocket flange bolt to 34 ft lbs 46 0 Nm final torque k Remove the sprocket locking tool and follow instructions in Service Manual for unloading the primary cam chain tensioner 7 Install the cam cover according to ENGINE BOTTOM END Cam Support Plate Disassembly Assembly instructions in applicable Service Manual NOTE Replace original cam cover gasket with new cam cover gas ket P N 25244 99 f1639x3x Sprocket Locking Tool I I Figure 1 Crankshaft Camshaft Sprocket Locking Tool Part No HD 42314 J01486 20f3
4. d result in death or serious injury Installation Procedure Obtain and install new Screamin Eagle cams according to the instructions provided with the cams e 2 Apply a thin film of clean H D 20W50 engine oil to the splines of the rear cam 3 Install new P N 25716 99 splined sprocket to drive camshaft according to ENGINE BOTTOM END Cam Support Plate Removal and Disassembly Assembly Camshaft Camshaft Bearings instructions in applicable Service Manual Use spacers Item 2 listed on Service Parts page of this Instruction Sheet in place of those listed in Service Manual NOTE Verify alignment at crank and primary cam sprocket punch marks as described in Service Manual NOTE Verify alignment at crank and primary cam sprocket faces Use included spacers to maintain alignment at or 0 005 4 Obtain new cam drive sprocket flange bolt P N 996 and new washer P N 6294 5 Obtain new crank flange bolt P N 898A and new flat washer P N 6278A NOTE Sprocket flange bolt P N 996 washer P N 6294 crank flange bolt P N 898A and flat washer 6278A are included in Twin Cam 88 Screamin Eagle 203 cam and Stage 2 Performance kits 6 Install new flange bolts and washers as follows a Ensure all threads are clean and free from oil then apply Loctite Primer 7649 P N 99813 97 b Apply Loctite High Strength Threadlocker 262 red P N 94759 99 to threads of flange bolts CAUTION Failure to use
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