Hydraulic Lifter Bleeding per Boston Bob Method w/Pics
Posted: Sun Apr 08, 2007 6:47 pm
I bled three of my hydraulic lifters yesterday using the Boston Bob method http://www.bostonengine.com/articles/hydraulicll.htm
and took some photos along the way that may be useful. First, here's what you're getting into:
[albumimg]726[/albumimg]
The lifter after removal from the engine...
[albumimg]719[/albumimg]
Removing the clip allows the top pushrod socket to rise up....
[albumimg]720[/albumimg]
I used the hooked end of the clip in the center hole to pull out the pushrod socket...
[albumimg]721[/albumimg]
Fill the lifter with oil and press down carefully and slowly on the check ball in the center of the plunger with a small diameter punch. This will remove all air from inside the lifter (you'll hear it come out and see bubbles) and the top of the plunger can be pushed down below the hole on the side of the lifter body.
[albumimg]722[/albumimg]
While holding the plunger down, place a second punch (or something similar) through the hole on the side of the lifter body to prevent the plunger from springing back up. Then remove the first punch. Refill the entire lifter with oil.
[albumimg]723[/albumimg]
Now put the pushrod socket back into the lifter, pressing it down as far as possible, which should be far enough allow reinstalling the clip. Do that.
[albumimg]725[/albumimg]
Submerse the lifter in oil and remove the punch, which will allow the plunger to rise up and make contact with the pushrod socket.
[albumimg]724[/albumimg]
Remove the lifter and try to press down on pushrod socket. If it cannot be pressed down, you have succeeded!
and took some photos along the way that may be useful. First, here's what you're getting into:
[albumimg]726[/albumimg]
The lifter after removal from the engine...
[albumimg]719[/albumimg]
Removing the clip allows the top pushrod socket to rise up....
[albumimg]720[/albumimg]
I used the hooked end of the clip in the center hole to pull out the pushrod socket...
[albumimg]721[/albumimg]
Fill the lifter with oil and press down carefully and slowly on the check ball in the center of the plunger with a small diameter punch. This will remove all air from inside the lifter (you'll hear it come out and see bubbles) and the top of the plunger can be pushed down below the hole on the side of the lifter body.
[albumimg]722[/albumimg]
While holding the plunger down, place a second punch (or something similar) through the hole on the side of the lifter body to prevent the plunger from springing back up. Then remove the first punch. Refill the entire lifter with oil.
[albumimg]723[/albumimg]
Now put the pushrod socket back into the lifter, pressing it down as far as possible, which should be far enough allow reinstalling the clip. Do that.
[albumimg]725[/albumimg]
Submerse the lifter in oil and remove the punch, which will allow the plunger to rise up and make contact with the pushrod socket.
[albumimg]724[/albumimg]
Remove the lifter and try to press down on pushrod socket. If it cannot be pressed down, you have succeeded!