Question about Motorcycles
Posted by Anonymous on
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Posted on Aug 06, 2020
first off remove all the pushrod covers. Then starting with any of them turn the motor over till one of the pushrods is all the way up. Then loosen the nuts at the bottom and turn the adjusting nut on it till you can just barely spin the pushrods with your fingers. Retighten the pushrod nuts. Recheck to make sure you can still turn it. Take your time doing it. and then replace the covers.
Posted on Jul 26, 2009
This can be a big zero on the fun scale, so get ready. First place your bike on a lift (borrowed or owned, just get one) with rear wheel off the ground. Now remove your air cleaner and maybe your filter. Now drop the pushrood tubes one at a time, not all at once (pick a jug only one). With the bike in gear and holding the pushrod tube up so you can see the bottom part of the push rod, rotate engine until you are on flat side of the cam. You'll know when the push rod is as low as it can be and the wheel moves a little and the push rod doesn't. Your push rods have a jam nut on them and the pushrod is not round in places you must loosen the jam nut and then holding both pieces of the pushrod you can screw the lower end of the push rod into the other piece. This will shorten the push rod. BE VERY CAREFUL NOT TO DROP THE JAM NUT. If you do you will be cussin for a month! Now you can shorten the push rod enough to get it out. Work only one cylinder at a time and yes note which push rod goes where as most HD ones have different diameter ends.
Soak you lifters in oil overnight, not for most of the morning or a few hours, but overnight. Once you get both push rods out use your fingers, a small pick, or what ever to pull the lifters out. Replace the lifters, O rings for push rod tubes, put the tubes over the push rod and looking at the lifters make absolutely sure they are in the lowest position they can be, adjust you push rods. If they are HD Screamin Eagle ones you extent the push rods to what we call zero lash, that is until they make firm contact with the lifter but are not compressing the lifter. this is just something you gotta do to figure out how. Then once you have zero lash HD sez unscrew or lengthen the push rod by holding the top piece with a wrench and unscrewing the bottom piece 3 and one half turns, then lock it up with the jam nut. Put push rod tubes together move to the next cyclinder.
IMPORTANT THINGS TO MAKE SURE YOU DO:
Work on a completely COLD bike!!
Soak lifters over night
Use new O rings
Adjust push rods absolutely at zero lash + 3.5 turns (if HD) when lifter is lowest in bore.
This is a painful process cause after things get a few hours on them you WILL want to go back in and readjust. I am truely sorry this is such a pain. I hope this helps and good luck,
Posted on Aug 31, 2009
Testimonial: "Good instructions-thanks. I did have to extend the rear cylinder rods after a short ride. When re-tightening, do I go the 3.5 again or just snug?"
SOURCE: 1991 harley ulra classic has
I hope this helps out.
the 2 long push rods are the exhaust and the 2 short ones are the intake.
jack up the bike so the rear tire is off the ground.
put in 5th gear so you can turn over the motor by turning the back tire.
it takes 2 people, one to turn the tire and the other to be looking at the lifter to make sure it is at its lowest point.
you should have all push rods in but very loose.
start with the rear exhaust and then rear intake then front intake then front exhaust.
turn the motor over with back tire, looking at the lifter, watch to see it get to its lowest point.
when it is at its lowest point, stop turning the tire.
now tighten up the push rod so you can spin it but no up and down movement.
now tighten to push rod specs(factory or aftermarket have # of turns or flats to turn)
yours should be 3 turns, but check your manual specs or call dealer and ask how many turns for that year just to make sure.
after 3 turns the push rod will be tight.You have to wait about 15-20 minutes for the lifter to bleed down. try to spin the push rod after 20 minutes. if its hard to spin, wait 20 minutes more, if its hard to spin then you may have over tightened the push rod.
if the push rod spins freely but no up and down movement, then the lifter has bled down and your ready to move to the next push rod.
repeat this process with each push rod.
once done, make sure the spark plugs are out and turn the motor over a few times, as the motor turns over, have your buddy stop when you see a lifter at its lowest point and spin the push rod.
it should spin free with no up and down movement. check them all.
just remember to make sure the number of turns for the type of push rods you have.
call the manufacturer who makes your push rods, or call the dealer if they are harley davidsion.
Note: there is basically zero lash once the bike is running, because the oil takes up the clearance.
Posted on May 21, 2011
SOURCE: I have a 2000 Road
Stock lifters often allow valve noise. Consider velvet touch or Jims' lifters AND lifter blocks.
Adjustable push rods are okay.
Adjustment: I prefer TOTALLY dry lifters get the lifter at its lowest point and FULLY collapse the lifter. then turn looser by 1 to 2 1/2 turns. What this does is allow for a loss of oil pressure without engine destruction. This procedure is essentially the opposite of the normal procedure.
Many HDs have intermittent valve tapping and we have traced to the lifters. HD says "It's a Harley", but a valve tap ruins the whole ride.
Posted on Jun 10, 2011
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