REF: Service Procedures 16

Hydraulic Lifter - Disassembly / Inspection / Assembly

Disassembly

Disassembling a lifter is not very difficult.
The plunger is under slight spring load from the retaining ring when the oil is bled off of the lifter.
A pumped up lifter can be bled by removing the check valve on the bottom and pressing a pushrod in the lifter hole.

A doglegged pick works good for removing the
retainer clip and removing the internals. 1)
This is not a good idea as the clip may fly off once
removed and you can lose it. 2)
Push slightly on the plunger to remove pressure on
the clip and use the pic to pull the clip away from
the groove in the top. 3)
Now you can remove the clip. You can dump the lifter into a rag to keep from losing parts and the guts may fall out when turned upside down.
Notice the springs natural positioning of the top of the cup. 4)
Or, you can use the pick to hook and pull them out. 5)Remove the pushrod cupYou may can just can pull the plunger from the body
with your fingers. If not, remove the plate in the
plunger and use the pick. 6)
Once the plunger is out, turn the body upside down and let it drain. Pull the plate out if you haven't already. 7)
This is the lifter's check valve (some have a plate and spring, others have a ball and spring).
The cup pries off with a screwdriver. Careful not to lose the cup or the tiny spring under it. 8)
This plate, spring and cup make up the check valve for this lifter. 9)

Inspection

Visual

Clean all parts inside and out with solvent 10)
Check for scratching or galling on the inside shoulder of the housing and outside body of the piston. 11)
Check for excessive wear on the outside of the housing.
Excess scratches should signal you to check the lifter bore clearance in the case. 12)
Wear marks from lifter rising above the
anti-rotation pin. 13)

Mechanical

Specs 14)New InstallService Limit
Fit in guide.0008“ - .0023”
.020 mm -.058 mm
.003“
.08 mm
Roller Fit.0006” - .0013“
.015 mm -.033 mm
No spec
Roller End Clearance.008” - .022“
.203 mm - .559 mm
.026”
.660 mm
Check roller end clearance with a feeler gauge. 15)

Assembly


1) , 2) , 3) , 5) , 15)
photo by Hippysmack
4) , 6) , 7) , 8) , 9) , 10) , 11) , 12) , 13)
photos by Hippysmack
14)
1998 HD Sportster FSM pg 3-3
This website uses cookies for visitor traffic analysis. By using the website, you agree with storing the cookies on your computer.More information