Loose pushrods?

Flying Kangaroo · 04-28-2013, 12:53 PM

Getting a funny knocking on the left side that all my years of running solid lifters tells me that I have loose pushrods.

Problem is...I ain't entirely sure where to start. I know where they are, but it's looking like the adjusters are on the lifter ends of the pushrods.

Getting ready to hit the "Search" button and start looking, but if anybody has any quick info for a noob, it would be greatly appreciated.

She's a '70 R60/5.

Big Bamboo · 04-28-2013, 12:58 PM

The push rods are not adjustable. Lots more likely that it's the rocker bushings are shot or the rockers themselves have too much vertical play. Proper adjustment requires zero play with no binding.

pommie john · 04-28-2013, 02:18 PM

The adjusters are on the rockers. You just have to remove the rocker covers and there they are.

It would seem you don't have a workshop manual, that's the first thing to buy.

Warin · 04-28-2013, 04:16 PM

Quote:

Originally Posted by pommie john

It would seem you don't have a workshop manual, that's the first thing to buy.

The OP would do well to read lots, I suspect they won't know about the side play on the rocker ... some links here
http://www.airheads.org/index.php?op...=36&Itemid=247

See Anton on rocker arms...

Bill Harris · 04-28-2013, 05:05 PM

And it might well be a worn exhaust bearing...

--Bill

disston · 04-28-2013, 05:22 PM

If the push rods have all of a sudden gotten more play in them than was put the last time the valves were adjusted it's possible the adjuster screws have had the threads striped. Can happen from over tightening.

The valve adjustment is part of regular maintenance. How many miles since somebody who knows this has worked on this bike? The PO maybe?

chollo9 · 04-29-2013, 10:21 AM

Easy on the assumptions, Bill, it could be the taillight oil is low.

Due to the seat gasket leaking.

All caused by failure to drain the winter air from the tires and replace it with summer air.

Pokie · 04-29-2013, 11:11 AM

Are you sure it's in the heads? Check and adjust the valves, don't forget to check for any twist or end play in the rockers. Any twist means the bushings are shot (if it has bronze bushings), any end play needs to be reduced to next to nothing.

I get a lot of folks that are convinced the knocking noise they hear is in their heads (usually the left), most often it turns out to be a worn timing chain.

04-28-2013, 12:53 PM	#1
Flying Kangaroo ^OP Adventurer Joined: Apr 2013 Oddometer: 11	Loose pushrods? Getting a funny knocking on the left side that all my years of running solid lifters tells me that I have loose pushrods. Problem is...I ain't entirely sure where to start. I know where they are, but it's looking like the adjusters are on the lifter ends of the pushrods. Getting ready to hit the "Search" button and start looking, but if anybody has any quick info for a noob, it would be greatly appreciated. She's a '70 R60/5. __________________ The guy that keep sayin', "Huh?"

04-28-2013, 12:58 PM	#2
Big Bamboo Studly Adventurer Joined: Sep 2010 Location: Big Island of Hawaii Oddometer: 805	The push rods are not adjustable. Lots more likely that it's the rocker bushings are shot or the rockers themselves have too much vertical play. Proper adjustment requires zero play with no binding. __________________ "No hour of life is wasted that is spent in the saddle." =Winston Churchill=

04-28-2013, 02:18 PM	#3
pommie john Beastly Adventurer Joined: Apr 2008 Location: Brisvegas, Australia Oddometer: 1,109	The adjusters are on the rockers. You just have to remove the rocker covers and there they are. It would seem you don't have a workshop manual, that's the first thing to buy. __________________ The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. Bertrand Russell

04-28-2013, 05:05 PM	#5
Bill Harris Confirmed Curmudgeon Joined: Sep 2008 Location: backwoods Alabama Oddometer: 3,853	And it might well be a worn exhaust bearing... --Bill __________________ '73 R60/5 Toaster

04-28-2013, 05:22 PM	#6
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 4,980	If the push rods have all of a sudden gotten more play in them than was put the last time the valves were adjusted it's possible the adjuster screws have had the threads striped. Can happen from over tightening. The valve adjustment is part of regular maintenance. How many miles since somebody who knows this has worked on this bike? The PO maybe? __________________ Never memorize something you can look up. ---Albert Einstein

04-29-2013, 10:21 AM	#7
chollo9 Screwed the Pooch Joined: Jul 2003 Location: Silk Hope, NC Oddometer: 492	Easy on the assumptions, Bill, it could be the taillight oil is low. Due to the seat gasket leaking. All caused by failure to drain the winter air from the tires and replace it with summer air. __________________ If your gonna be dumb, you gotta be tough When you get knocked down you gotta get back up, I ain't the sharpest knife in the drawer but I know enough, to know, If your gonna be dumb, you gotta be tough

04-29-2013, 11:11 AM	#8
Pokie Just plain Pokie. Joined: Apr 2013 Location: Fort Collins, CO Oddometer: 50	Are you sure it's in the heads? Check and adjust the valves, don't forget to check for any twist or end play in the rockers. Any twist means the bushings are shot (if it has bronze bushings), any end play needs to be reduced to next to nothing. I get a lot of folks that are convinced the knocking noise they hear is in their heads (usually the left), most often it turns out to be a worn timing chain.

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