54 cam cover

Gear Case (cams, idlers, cam cover)
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p aiello
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54 cam cover

#1

Post by p aiello »

is it normal for pinion bushing to also have bleed hole on the side so oil can leak into cam case the hole looks factory I,m having low oil pressure issues, pump seems ok



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Re: 54 cam cover

#2

Post by 1950Panhead »

The side hole is for a dowel pin to lock the bushing to the cover.
All panheads have low oil pressure, the pump keeps oil flowings through the bearings.
Jerry

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Re: 54 cam cover

#3

Post by p aiello »

the hole is on the side

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Re: 54 cam cover

#4

Post by p aiello »

I spray wd40 In hole and it goes thru bushing

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Re: 54 cam cover

#5

Post by Panacea »

can you snap a pic?

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Re: 54 cam cover

#6

Post by p aiello »

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Re: 54 cam cover

#7

Post by Frankenstein »

The hole on the side is normal, it has been there since shortly after the change to recirculating oil. I had one early flathead cam cover that didn't have it. The idea is to bleed off oil that leaks around the shaft/bush and ends up at the cavity at the end of the shaft in the cover.
If you look closely, the hole should terminate in that cavity towards the bottom past where the bush is situated.
One theory voiced is that it prevents oil build up causing pressure on the end of the shaft, pressing the entire flywheel ass'y to the left, causing undue side thrust on the left side mainshaft thrust washer.
The actual feed to the flywheel ass'y is via the single hole in the bush itself, which gives one timed shot of oil per revolution to a matching hole in the side of the mainshaft.
DD

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Re: 54 cam cover

#8

Post by 58flh »

Absolutely normal & DD could not of explained it any better!---Respectfuly---RICHIE

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Re: 54 cam cover

#9

Post by p aiello »

makes sense thanks for the info.
pat

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Re: 54 cam cover

#10

Post by kitabel »

...and I was warned 50 years ago by Uncle Dudley to plug the hole for more pressure to the pin.

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Re: 54 cam cover

#11

Post by Frankenstein »

Personally, I plug the hole, open the end of the mainshaft, and then trench the bushing from the oil output hole to the cavity at the end, to get full time oiling of the crank ass'y. Haven't personally worn out any thrust washers as yet. :lol:
DD

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