Hi chaps
I have some questions about a 1927 model 9 that I'm hoping you knowledgeable chaps might have the answers to.......so the crankcase oil spray nozzle how is it held in place and should it have a fibre washer to seal it........the nozzle tube end has 2 flats one either side (see photo) should there be some kind of retaining nut or washer as the fit as it is is quite loose.......it also has an oil connection into the timing side crankcase that feeds directly into the cam casing how is this piped up......forget the way the picture shows it piped I'm interested in how it's piped as standard so oil from the tank to the pump inlet out of pump back up to sight glass in tank out of sight glass to 2 wat tap one way to engine the other to gearbox but with this timing side connection does the 2 way oil valve connection that feeds the gearbox on most model 9's have to be disconnected and re-routed to this Timing chest side case feed connection? anyone know how it's piped up ......also what should the crank end float be.....0.005" ?......and one last question the brass inserts that take the tappet adjuster sliders how do they come out are the an interference fit where they'll need to be heated and pulled out like teeth........your advice and pictures would be much appreciated thanks in advance
Hi Russ
The main oil feed to the engine is clamped in place and shouldn't be loose when the engine bolts are tightened up. So no nut required.
The oil connection on timing side is an addition. Suggesting a direct hand pump feed was at some stage used. What type of tank and associated oil pump is fitted? As the correct hand pump and combined sight gauge was used in 1927 only.
Re how it's plumbed. There is a main feed from the oil tank which goes to the best Lloyd pump which is pumped up to a the sight gauge . In addition a hand pump also can be use to directly pump in to the sight gauge. From the sight reservoir a two way position tap is fitted which in the usual position feed the oil to 'the spray nozzle' which feeds the big end. In The taps other position it feeds the gear box.
In 1929 onwards Marston's directly fed the mains.
End float between 10-12 thou see 'Radco' page 85 worth buying the book, if you haven't got one.
The bronze inserts extend the full length and are an interference press fit in the crank case. Complete swine to remove. If too slack simpler to machine oversize push rod adjusters and ream to suit.
Hi there
thanks for the reply....my '27 M9 is exactly as your photo with the 2 way valve either feeding the engine or the gearbox....the spare engine I'm rebuilding which is the photo in the first post has the additional oil feed in the timing case which from what I've seen is something the M90 had......as you know it feeds directly into the cam side timing case I was just wondering if it would be a good idea to take the gear box feed and re-route it to the cam timing case feed instead or feed the actual engine feed here instead of the front of the crankcase it might save munching through cam profiles........thoughts......maybe on reflection the later might not be such a good idea as oil might get above the level of the crank breather wouldn't want oil blowing out of there when it opens.....I guess you could make the tube for the breather inside the casing longer and more upturned.....food for thought.....I'll have to look into how the M90 is plumbed......pictures of that would be useful......I have Radcos Workshop manual
Hi Colin, I just see that you use your email address as the avatar name. I recommend not to do that. It is not protected inside the forum and every external person/machine can see it. Internet machines (crawlers) can use it for spam and phishing attacks. See also https://www.marston-sunbeam.org/sunbeamForum/index.php?topic=1368.0
Cheers, Thomas
whose Colin
My fault, wrong thread.