Basic steps |
Required tools |
Pushrod tube seals |
Pushrod tube seals. |
Degrease and wash engine. |
Degrease and wash engine |
Your basic SWB 1970 R50/5 |
The finned exhaust nut wrench. |
Remove exhaust. |
Exhaust nut removed. |
Correct assembly of exhaust hardware. |
Remove exhaust. |
Unbolt the headers from the mufflers. |
Remove exhaust. |
Remove carb. |
Remove carb. |
Carb removed. |
Remove the valve cover. |
Removing rocker arm assemblies and pushrods. |
Remove rocker arm assemblies and pushrods. |
Remove rocker arm assemblies and pushrods. |
Remove rocker arm assemblies and pushrods |
Rocker arm assembly with needle bearings. |
Remove rocker arm assemblies and pushrods. |
Another way to do it is with screws on a board, and labeled. |
Pull jug out partway. |
Pull jug out partway. |
Pull jug out partway. |
Pull jug out partway. |
Pull jug out partway. |
Pull jug out partway. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Remove wristpin. |
Inspect wristpin. |
Remove jug with piston in cylinder. |
Remove jug with piston in cylinder. |
Finish removing the jug. |
Remove jug with piston in cylinder. |
Replace pushrod tube seals. |
Replace pushrod tube seals. |
Detail view of piston crown. |
Replace pushrod tube seals. |
Correct piston orientation. |
Correct piston orientation. |
Replace pushrod tube seals. |
Prep cylinder base area for reassembly. |
Cleaning cylinder base. |
Cleaning cylinder base. |
Cylinder base gasket |
Cylinder base on jug suitably cleaned. |
Another view of the cleaned cylinder base. |
Small o-rings seal top cylinder studs. |
Close-up of large and small o-rings. |
Prepare cylinder base area for reassembly |
Cleaning the cylinder base area |
Cleaning the cylinder base area |
There, much better! |
Small o-ring on '76-and-later motors. |
Clean cylinder base area. |
Clean cylinder base area. |
Prepare cylinder base area for reassembly |
Hylomar |
Permatex High-Temp RTV Silicone |
Just a dab'll do ya |
Oil gallery outlet at the top cylinder stud. |
Correct thickness of sealant application. |
Applying sealant to cylinder base of jug. |
Prepare cylinder base area for reassembly |
New wire clip for wristpin. |
Installing the wire clip. |
Seat cylinder base and PRT seals |
Seat cylinder base and PRT seals |
Seat cylinder base and PRT seals |
Seating the seals by installing the bottom cylinder stud nuts first. |
Reinstall pushrods & rocker arm assemblies. |
Reinstall pushrods & rocker arm assemblies. |
Adjust alignment of rocker arm assemblies |
Aligning the rocker arm assemblies |
Correct alignment of the pushrod in the PRT |
Torquing the cylinder studs. |
Setting the valve lash. |
Setting the valve lash. |
Setting the valve lash. |
Refitting the valve cover. |
Reinstall exhaust and carb. |
Reinstall exhaust and carb. |
Oak's top end manual -- invaluable! |