![Basic steps](https://a4.pbase.com/g1/96/586996/3/92585771.bts91eXb.jpg) Basic steps |
![Required tools](https://a4.pbase.com/g1/96/586996/3/92585799.YRCMr8NW.jpg) Required tools |
![Pushrod tube seals](https://a4.pbase.com/g1/96/586996/3/92585736.mC9IHVmG.jpg) Pushrod tube seals |
![Pushrod tube seals.](https://a4.pbase.com/g1/96/586996/3/92585772.SiGagzNZ.jpg) Pushrod tube seals. |
![Degrease and wash engine.](https://a4.pbase.com/g1/96/586996/3/92585818.UGVmCtty.jpg) Degrease and wash engine. |
![Degrease and wash engine](https://a4.pbase.com/g1/96/586996/3/92585737.xBPFLJ6G.jpg) Degrease and wash engine |
![Your basic SWB 1970 R50/5](https://a4.pbase.com/g1/96/586996/3/92585763.F3BY5bla.jpg) Your basic SWB 1970 R50/5 |
![The finned exhaust nut wrench.](https://a4.pbase.com/g1/96/586996/3/92585764.fKBbbWYF.jpg) The finned exhaust nut wrench. |
![Remove exhaust.](https://a4.pbase.com/g1/96/586996/3/92585765.zMqPMRpb.jpg) Remove exhaust. |
![Exhaust nut removed.](https://a4.pbase.com/g1/96/586996/3/92585766.6NFQFiIl.jpg) Exhaust nut removed. |
![Correct assembly of exhaust hardware.](https://a4.pbase.com/g1/96/586996/3/92585767.QdH8GoX7.jpg) Correct assembly of exhaust hardware. |
![Remove exhaust.](https://a4.pbase.com/g1/96/586996/3/92585768.9Fomv9Fd.jpg) Remove exhaust. |
![Unbolt the headers from the mufflers.](https://a4.pbase.com/g1/96/586996/3/92585769.rWO7pSRK.jpg) Unbolt the headers from the mufflers. |
![Remove exhaust.](https://a4.pbase.com/g1/96/586996/3/92585773.d6JzZU8W.jpg) Remove exhaust. |
![Remove carb.](https://a4.pbase.com/g1/96/586996/3/92585775.w8T77TQz.jpg) Remove carb. |
![Remove carb.](https://a4.pbase.com/g1/96/586996/3/92585774.k365opbX.jpg) Remove carb. |
![Carb removed.](https://a4.pbase.com/g1/96/586996/3/92585776.n1BauA73.jpg) Carb removed. |
![Remove the valve cover.](https://a4.pbase.com/g1/96/586996/3/92585778.GG9oJ6EL.jpg) Remove the valve cover. |
![Removing rocker arm assemblies and pushrods.](https://a4.pbase.com/g1/96/586996/3/92585780.YaPZodp1.jpg) Removing rocker arm assemblies and pushrods. |
![Remove rocker arm assemblies and pushrods.](https://a4.pbase.com/g1/96/586996/3/92585781.c5dT9mkZ.jpg) Remove rocker arm assemblies and pushrods. |
![Remove rocker arm assemblies and pushrods.](https://a4.pbase.com/g1/96/586996/3/92585782.kbtIaTvk.jpg) Remove rocker arm assemblies and pushrods. |
![Remove rocker arm assemblies and pushrods](https://a4.pbase.com/g1/96/586996/3/92585783.8e6GdBli.jpg) Remove rocker arm assemblies and pushrods |
![Rocker arm assembly with needle bearings.](https://a4.pbase.com/o6/96/586996/1/92585784.6Pch5gcb.370.jpg) Rocker arm assembly with needle bearings. |
![Remove rocker arm assemblies and pushrods.](https://a4.pbase.com/g1/96/586996/3/92585785.a9ydtIuS.jpg) Remove rocker arm assemblies and pushrods. |
![Another way to do it is with screws on a board, and labeled.](https://a4.pbase.com/g1/96/586996/3/92585786.IFG6zvdv.jpg) Another way to do it is with screws on a board, and labeled. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585788.2ZiEx5CL.jpg) Pull jug out partway. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585790.R2w24MsC.jpg) Pull jug out partway. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585791.8qA8Uf2F.jpg) Pull jug out partway. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585792.pbjoEAcH.jpg) Pull jug out partway. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585794.Vnz3do7y.jpg) Pull jug out partway. |
![Pull jug out partway.](https://a4.pbase.com/g1/96/586996/3/92585795.5If6xvLS.jpg) Pull jug out partway. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585796.nLMO2Gxu.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585797.lfSIPMbc.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585798.z5QfNmqK.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585800.qy2RUnjt.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585801.lhH4z4NM.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585802.LUiZu5Uo.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585805.HN9CgPtq.jpg) Remove wristpin. |
![Remove wristpin.](https://a4.pbase.com/g1/96/586996/3/92585806.ohrxmofU.jpg) Remove wristpin. |
![Inspect wristpin.](https://a4.pbase.com/g1/96/586996/3/92585807.wEodzkIS.jpg) Inspect wristpin. |
![Remove jug with piston in cylinder.](https://a4.pbase.com/g1/96/586996/3/92585808.wkRoYeXz.jpg) Remove jug with piston in cylinder. |
![Remove jug with piston in cylinder.](https://a4.pbase.com/g1/96/586996/3/92585809.JfRdqTAt.jpg) Remove jug with piston in cylinder. |
![Finish removing the jug.](https://a4.pbase.com/g1/96/586996/3/92585810.EQ2odDf1.jpg) Finish removing the jug. |
![Remove jug with piston in cylinder.](https://a4.pbase.com/g1/96/586996/3/92585811.AKCpxDrk.jpg) Remove jug with piston in cylinder. |
![Replace pushrod tube seals.](https://a4.pbase.com/g1/96/586996/3/92585812.5lZpG1My.jpg) Replace pushrod tube seals. |
![Replace pushrod tube seals.](https://a4.pbase.com/g1/96/586996/3/92585814.K6k6El1z.jpg) Replace pushrod tube seals. |
![Detail view of piston crown.](https://a4.pbase.com/g1/96/586996/3/92585815.QQne6yPv.jpg) Detail view of piston crown. |
![Replace pushrod tube seals.](https://a4.pbase.com/g1/96/586996/3/92585816.YfuvL1Cz.jpg) Replace pushrod tube seals. |
![Correct piston orientation.](https://a4.pbase.com/g1/96/586996/3/92585817.TweAYlyR.jpg) Correct piston orientation. |
![Correct piston orientation.](https://a4.pbase.com/g1/96/586996/3/92585819.tcXHHtlk.jpg) Correct piston orientation. |
![Replace pushrod tube seals.](https://a4.pbase.com/g1/96/586996/3/92585820.86LKbnxI.jpg) Replace pushrod tube seals. |
![Prep cylinder base area for reassembly.](https://a4.pbase.com/g1/96/586996/3/92585821.Vhrxey3W.jpg) Prep cylinder base area for reassembly. |
![Cleaning cylinder base.](https://a4.pbase.com/g1/96/586996/3/92585822.vlgZ1jjS.jpg) Cleaning cylinder base. |
![Cleaning cylinder base.](https://a4.pbase.com/g1/96/586996/3/92585824.p8pouncH.jpg) Cleaning cylinder base. |
![Cylinder base gasket](https://a4.pbase.com/g1/96/586996/3/92585825.6hJO8nIw.jpg) Cylinder base gasket |
![Cylinder base on jug suitably cleaned.](https://a4.pbase.com/g1/96/586996/3/92585826.k1wEdy8F.jpg) Cylinder base on jug suitably cleaned. |
![Another view of the cleaned cylinder base.](https://a4.pbase.com/g1/96/586996/3/92585827.3lQ7hTsK.jpg) Another view of the cleaned cylinder base. |
![Small o-rings seal top cylinder studs.](https://a4.pbase.com/g1/96/586996/3/92585828.wzTViwig.jpg) Small o-rings seal top cylinder studs. |
![Close-up of large and small o-rings.](https://a4.pbase.com/g1/96/586996/3/92585830.rHpFGcJQ.jpg) Close-up of large and small o-rings. |
![Prepare cylinder base area for reassembly](https://a4.pbase.com/g1/96/586996/3/92585831.dBaFh05a.jpg) Prepare cylinder base area for reassembly |
![Cleaning the cylinder base area](https://a4.pbase.com/g1/96/586996/3/92585832.MqskrSWz.jpg) Cleaning the cylinder base area |
![Cleaning the cylinder base area](https://a4.pbase.com/g1/96/586996/3/92585833.WTe9bUrv.jpg) Cleaning the cylinder base area |
![There, much better!](https://a4.pbase.com/g1/96/586996/3/92585834.8qFSzmSf.jpg) There, much better! |
![Small o-ring on '76-and-later motors.](https://a4.pbase.com/g1/96/586996/3/92585835.qBbv3TCr.jpg) Small o-ring on '76-and-later motors. |
![Clean cylinder base area.](https://a4.pbase.com/g1/96/586996/3/92585837.eJHrbiJA.jpg) Clean cylinder base area. |
![Clean cylinder base area.](https://a4.pbase.com/g1/96/586996/3/92585838.PCTQuGAp.jpg) Clean cylinder base area. |
![Prepare cylinder base area for reassembly](https://a4.pbase.com/g1/96/586996/3/92585840.Bzl0zAO5.jpg) Prepare cylinder base area for reassembly |
![Hylomar](https://a4.pbase.com/g1/96/586996/3/92585841.mJWpaC1P.jpg) Hylomar |
![Permatex High-Temp RTV Silicone](https://a4.pbase.com/g1/96/586996/3/92585843.2Fppk030.jpg) Permatex High-Temp RTV Silicone |
![Just a dab'll do ya](https://a4.pbase.com/g1/96/586996/3/92585846.4xaaUIsz.jpg) Just a dab'll do ya |
![Oil gallery outlet at the top cylinder stud.](https://a4.pbase.com/g1/96/586996/3/92585847.2EXueOsK.jpg) Oil gallery outlet at the top cylinder stud. |
![Correct thickness of sealant application.](https://a4.pbase.com/g1/96/586996/3/92585849.PVssZcvV.jpg) Correct thickness of sealant application. |
![Applying sealant to cylinder base of jug.](https://a4.pbase.com/g1/96/586996/3/92585850.rotBOAIK.jpg) Applying sealant to cylinder base of jug. |
![Prepare cylinder base area for reassembly](https://a4.pbase.com/g1/96/586996/3/92585852.9yUh296F.jpg) Prepare cylinder base area for reassembly |
![New wire clip for wristpin.](https://a4.pbase.com/g1/96/586996/3/92585853.JzGOkpcN.jpg) New wire clip for wristpin. |
![Installing the wire clip.](https://a4.pbase.com/g1/96/586996/3/92585855.rcJHMOEt.jpg) Installing the wire clip. |
![Seat cylinder base and PRT seals](https://a4.pbase.com/g1/96/586996/3/92585738.wM29Ikjw.jpg) Seat cylinder base and PRT seals |
![Seat cylinder base and PRT seals](https://a4.pbase.com/g1/96/586996/3/92585740.sKEjG2em.jpg) Seat cylinder base and PRT seals |
![Seat cylinder base and PRT seals](https://a4.pbase.com/g1/96/586996/3/92585743.VavUFU97.jpg) Seat cylinder base and PRT seals |
![Seating the seals by installing the bottom cylinder stud nuts first.](https://a4.pbase.com/g1/96/586996/3/92585745.10ftIeOM.jpg) Seating the seals by installing the bottom cylinder stud nuts first. |
![Reinstall pushrods & rocker arm assemblies.](https://a4.pbase.com/g1/96/586996/3/92585746.jW101lrw.jpg) Reinstall pushrods & rocker arm assemblies. |
![Reinstall pushrods & rocker arm assemblies.](https://a4.pbase.com/g1/96/586996/3/92585748.7G1lS5Jy.jpg) Reinstall pushrods & rocker arm assemblies. |
![Adjust alignment of rocker arm assemblies](https://a4.pbase.com/g1/96/586996/3/92585749.Mkm6VceC.jpg) Adjust alignment of rocker arm assemblies |
![Aligning the rocker arm assemblies](https://a4.pbase.com/g1/96/586996/3/92585752.sf9FQWY5.jpg) Aligning the rocker arm assemblies |
![Correct alignment of the pushrod in the PRT](https://a4.pbase.com/g1/96/586996/3/92585754.wbk7bijG.jpg) Correct alignment of the pushrod in the PRT |
![Torquing the cylinder studs.](https://a4.pbase.com/g1/96/586996/3/92585755.BhFmQAgR.jpg) Torquing the cylinder studs. |
![Setting the valve lash.](https://a4.pbase.com/g1/96/586996/3/92585756.ulNIl7xH.jpg) Setting the valve lash. |
![Setting the valve lash.](https://a4.pbase.com/g1/96/586996/3/92585757.1F6EeOPA.jpg) Setting the valve lash. |
![Setting the valve lash.](https://a4.pbase.com/g1/96/586996/3/92585758.NUVpMraK.jpg) Setting the valve lash. |
![Refitting the valve cover.](https://a4.pbase.com/g1/96/586996/3/92585759.MuEOJW5j.jpg) Refitting the valve cover. |
![Reinstall exhaust and carb.](https://a4.pbase.com/g1/96/586996/3/92585761.YjRMZdF9.jpg) Reinstall exhaust and carb. |
![Reinstall exhaust and carb.](https://a4.pbase.com/g1/96/586996/3/92585762.uVVsDGDR.jpg) Reinstall exhaust and carb. |
![Oak's top end manual -- invaluable!](https://a4.pbase.com/g1/96/586996/3/92585770.lws7sGb9.jpg) Oak's top end manual -- invaluable! |