J&P Cycles Motorcycle Community

 Gidday , i am trying to get my 49 pan running and have just done pistons rings top end tidy up and am looking for what needs to go in the oil pump in the way of springs ball bearings special screws etc,and what fits in the engine case hole where tappet filter screen usually goes ? Thanx Ross

Good-eye Ross,

 For the tappet hole, there is the screen, open end down, a spring, then the cap...The other hole in the pump is for the check ball, spring, then cap. If you're running solid lifters you don't need the tappet screen, just put the plug in.

 Thanks FX

You're welcome...Let us know how you are coming along with your build Ross...

 Well i got the 49 pan from 1 of the usa biggest stealerships last year assuming the motor at least would turn over when it got here , wrong !, it was siezed rocker shafts in the heads etc wiring very bad ,since i have re wired it , re built motor done valves ,new kicker gears and bushes in kick cover,put guards on correctly ,fixed brakes , i got bars comin this week so its start up time when i get right oil pump springs and bb . if those parts you refered to me were 740-373 and or 431-411 i have allready got these and they do not fit . even the screen plug 740-566 does not fit even though tech assured me it would ? HD part  # 707 is about the closest thread size to the tappet screen plug 1/2 inch 13 tpi ? can anyone help ?

Thanks Ross

Ross, those part numbers are the correct parts, but for newer bikes. I would suggest calling tech here with the serial # of the engine.

 Ross, I apologize that I have been busy with other duties. We offer the screen kits for 52-62 (PN 740-373), 63-65 (PN 740-189), 66-69 (PN 710-372) and 70-99. According to all te reference material I have, 49 should not  have had this. If you are a true small shaft long roller motor that has this tappet screen hole, the 740-373 should work.

 If that doesn't work, send me some pictures of what you have to sholton@jpcycles.com and I'll see what I can figure out.

 Thanx Xea it looks like 740-189 maybe the culprit ? i will take some pics in the light of day and send them to you before i purchase another kit . Thanx again very much appreciated  Ross

 Do your cases have a Timkin left bearing? Or do you have the small shaft loose roller set up?

Xea not sure what type of bearing as i have not split the cases yet and hope not to, it was rocker shafts siezed in the heads , i have tried to email pics of the motor to you ? did you get them ?

 Ross

 i received the photos. What I see are not 49 cases. I think part of the issue may be the threads that have been Heli-coiled in the tappet screen hole. You don't know if the correct thread insert was installed. The cases you have are not from 1949 despite what numbers are on the case. To identify what you have, we are going to have to have you remove the outer primary cover, take a picture of the engine sproket and send it too me. 1952 was the first year the tappet screen appeared, and the cases changed bearing style in 54-55. I suspect what you actually have is an early 60's style case set that the correct tappet screen parts are going to be 740-189. My only worry is the Heli-coil being the correct thread for the plug. Sent me a pic of the sproket and I'll see what else I can tell you. 

 While you are at it, send me a picture of the case numbers (on the pad just above the sproket).

Xea i will send you the pics asap ,thanks Ross

 Xea could it be left case 1960 and the right case 1963-65 ? left case does have timken type bearing and front sprocket  is just a sprocket without compensating sprocket set up ,i'mwaitin for the cook to take the pics