Which way does the lifter chamfer edge face?

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jimbo

jimbo

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Which way does the lifter chamfer edge face? With the keeper or away from it?


Which way does the lifter chamfer edge face?
 
Not sure if it's relevant but my 650ss has chamfers on both sides.
 
When lifters are removed they should be kept together and taged so they go back in the same way or place unless you are putting new ones in, I recently rebuilt a motor for a mate who got someone else to pull it apart who never marked anything, pistons, lifter, valves etc and of course the new owner of the bike though it wasn't important, the list of new parts got bigger, but one of his lifters was beyond repair so a new set was had as well a new cam.
If you are going to use old parts they need to go back the same way and place, my Manxman
project bike is in the same position everything was pulled apart over 20 years ago and nothing marked at all in the motor but its going to be completely rebuilt with new parts.

Ashley
 
Mine didn't have a chamfer on either side.

What year and model of motor is it?
 
bill said:
the champhers should face the front
Click to expand...

This.

I was advised by Becker not to reverse them, even with new lifters, as the forward tilt of the motor informs oil drainage down to the cam lobes
 
From the factory shop manual:
"Before refitting the tappets, apply a little clean oil and ensure the bevelled edges are side-by-side facing the front of the engine. Inadvertent reversal will restrict oil drainage, also prevent lubrication. Firmly tighten the plate retaining screws and secure with steel wire linking the two screws."
 

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Ron L said:
From the factory shop manual:
"Before refitting the tappets, apply a little clean oil and ensure the bevelled edges are side-by-side facing the front of the engine. Inadvertent reversal will restrict oil drainage, also prevent lubrication. Firmly tighten the plate retaining screws and secure with steel wire linking the two screws."
Click to expand...
where is that statement? I looked all over the MK3 manual for it.
 
dynodave said:
Cam stellite pad CHAMFER in pix (not all lifers have this, but front AND rear if present)
OR
Lifter bore CHAMFER (not in pix) face front as stated
Click to expand...
the edge in question( now answered,thanks everyone) is the vertical edge as shown in this photo

Which way does the lifter chamfer edge face?
 
acadian said:
This.

I was advised by Becker not to reverse them, even with new lifters, as the forward tilt of the motor informs oil drainage down to the cam lobes
Click to expand...

Well yes, and I fit them way, but not sure it makes any difference with the motor mounted vertical a la Atlas!
 
My 650ss had (when I dissembled it) one of those vertical chamfers facing forward and one facing rearward in each tappet pair and bore.
Is it wise to correct them to the Commando manual or leave them in the position they were?
(I engraved their positions into the non-wearing internal flats - where the keeper goes - bottom of Jimbo's photos above)
 
SteveA said:
Well yes, and I fit them way, but not sure it makes any difference with the motor mounted vertical a la Atlas!
Click to expand...

1. The lifters are mounted in the engine at 12 deg rearward tilting. That makes the oil puddle up on top of the lifer to flood lube the lifter bores until it finally over flows down the FRONT chamfer of the engine towards the cam.

2. The oil flowing down the FRONT of the lifter bore toward the cam. Naturally if the cam rotates the opposite direction of the crank...the oil will be coming onto the cam and lifters on the leading edge of the action. The cam sweeps from front to rear.

3. Would this not be the preferred location to oil the cam and NOT on the back side of the cams natural sweeping action.

4. Who would purposely put the drain chamfers toward the rear???? engine angle makes no difference to cam lube style

5. Who would not correct an obvious chamfer mismatch ???
 
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