Proper Lifter Adjustment
-
- Member
- Posts: 66
- Joined: Fri Oct 08, 2010 12:43 am
- Bikes: '65 ElectraGlide
'56 BMW R69
'87 Heritage Softail - Location: mass
- Been thanked: 11 times
Proper Lifter Adjustment
Was wondering if anybody can tell me what the threads are on a stock '65 Harley Davidson adjustable push rod? I have stock hydraulic lifters but after market push rods and don't know if the procedure in the manual would apply because of a slightly finer or courser thread difference. Is there a table cross referencing different thread sizes for adjustment or is a half turn up or down really not that critical? Thanks.
-
- Member
- Posts: 93
- Joined: Sun Feb 07, 2010 11:12 pm
- Bikes: 1998 Fat Boy
2000 Road King
2007 Hayabusa - Location: Georgia
- Has thanked: 9 times
- Been thanked: 8 times
- Contact:
Re: Proper Lifter Adjustment
Once you have the threads per inch (TPI) of the push rod, use this formula.
1/TPI = distance for one rotation
1/TPI = distance for one rotation
-
- Member
- Posts: 378
- Joined: Mon Feb 06, 2012 9:16 am
- Bikes: 58FLH
- Has thanked: 55 times
- Been thanked: 29 times
Re: Proper Lifter Adjustment
I guess his question is what's the distance to adjust after zero lash is achieved. I had the same problem, as the parts manual does not specify the TPI count, and the adjustment between stock and some aftermarket lifters are different. 3 complete revolutions Vs. 4 complete revolutions in most cases.
I'm curious if anyone has an answer to that?
I'm curious if anyone has an answer to that?
-
- Member
- Posts: 66
- Joined: Fri Oct 08, 2010 12:43 am
- Bikes: '65 ElectraGlide
'56 BMW R69
'87 Heritage Softail - Location: mass
- Been thanked: 11 times
Re: Proper Lifter Adjustment
Seems like compression of the spring (pre load?) 1/8 of an inch is the proper adjustment regardless of the TPI of the push rod. It does say this after reading the manual under "specifications". About half of the total amount of spring travel I would guess. Thanks.