How do you adjust the pushrods on a Harley Davidson Evo?
Bring Cam to Base circle for the tappets you wish to adjust. Rotate the engine. Watch the intake valve open (pushrod goes up) and then close (pushrod goes down). Continue rotating slowly until the cylinder’s piston reaches top dead center (TDC).
How do you adjust the pushrod on a Harley Davidson?
Turn your motor, by hand, and position the lifter you are adjusting to its lowest point of travel on the cam. Next, extend your adjustable pushrod until you have zero lash (adjust by hand until you pushrod is seated, but without collapsing the lifter).
How many turns can an adjustable pushrod do?
Next, extend your adjustable pushrod until you have zero lash (adjust by hand until you pushrod is seated, but without collapsing the lifter). Next, (depending on the manufacturers instructions) you may be instructed to extend the pushrod another 2 1/2 to, maybe, 3 full turns.
What should I do if my pushrods are loose?
With the pushrods loose, tighten them until there is no up and down play. The pushrods should be able to rotate easily with your fingers but should not move up and down any. Using the information above to calculate the pushrod adjustment, adjust both FRONT pushrods that amount and lock them down with the lock nut. DO NOT SKIP THIS STEP.
What should the thread pitch be on a pushrod?
Stock cams I set the pushrods at .125″ or so. Regardless, you need to know what thread pitch your pushrod threads are to adjust them properly. TPI = threads per inch. To find this, simply use a thread gauge, or count the threads in a one (1) inch section.
Are there adjustable pushrods on a Harley Davidson Evolution?
All Evolution models come from the factory with solid pushrods. There is no adjustment. If you have adjustable pushrods in your m/c, you have to try to determine the manufacturer of the pushrods so you can search for the correct adjustment procedure for that set of pushrods.
How do you adjust a pushrod on a bike?
To adjust pushrods that you may no longer have the instruction sheets for or may have come in a bike when purchased, you can figure out the adjustments as follows. The number of flats to turn the nut for proper pushrod adjustment can be calculated easily. First you have to find the number of threads per inch (tpi) on the adjusters.
Stock cams I set the pushrods at .125″ or so. Regardless, you need to know what thread pitch your pushrod threads are to adjust them properly. TPI = threads per inch. To find this, simply use a thread gauge, or count the threads in a one (1) inch section.
With the pushrods loose, tighten them until there is no up and down play. The pushrods should be able to rotate easily with your fingers but should not move up and down any. Using the information above to calculate the pushrod adjustment, adjust both FRONT pushrods that amount and lock them down with the lock nut. DO NOT SKIP THIS STEP.