After fixing the sprag the bike is nearly there.
The good news is it started very easily, the bad news is the oil light stayed on......!
I only let it run for about 3 seconds as I was watching for the oil light.
Any suggestions on fault finding?
Take the plugs out and spin it over on the starter. See if the oil light goes out then. Also check wire connections.
I did turn it over with the plugs out and the light stayed on. I thought it maybe wasn't fast enough hence I put the plugs in and fired it up. Pulling the wire from the sensor the light turns off so there must be continuity in the wiring. I did check the connector is fully home.
I remember a Triumph mechanic tell me some time back that he uses a bung to help the pump build pressure after a rebuild but can't remember where he put the bung or how it worked...
A positive displacement pump with a positive supply of oil will build pressure pretty quickly. I hate to say this but I think you've missed something or knocked something out of connection/alignment :BangHead
Or it's a dodgy oil pressure switch, think I'm on my 3rd or 4th now.
Quote from: GavD on August 08, 2016, 01:34:44 PM
Or it's a dodgy oil pressure switch, think I'm on my 3rd or 4th now.
True, easy enough to check with a bit of air pressure.
I didn't remove the sensor during the rebuild but I suppose being exposed to the atmosphere and moisture could have damaged it.
How would I check this? Pump air into the crankcase breather?
NOOOOOOOO :bug_eye take it off and do it on the bench. Too much chance of damaging seals.
Ok Ok .. :) It is on top of the crankcase so looks easy enough to take out, I shall try it tonight when I get home
sprag clutch repair you say ?...................................
guess what drives the oil pump ?
any guesses ?
:^_^
:m
the gears that drive the drive shaft for the sprag clutch also turns the oil pump as well as the alternator :nod
I'm thinking somewhere along the reassembly something went astray :bad
The alternator is turning ok so hopefully the pump is also turning. .....hopefully!!
I took the cam oil feed off and it looks very dry which is concerning.
I'm still wondering what the Triumph mechanic was meaning when he talked about using a bung to get the oil moving?
Dunno if this would do it but after a quick scan through my T300 manual saw this?
(http://i55.photobucket.com/albums/g132/cockneytaff/Oil%20Pump_zpshgnjlick.jpg)
Yes I fitted new o rings
Am I being a wuss and need to run it longer?
Quote from: beefos on August 08, 2016, 09:27:25 PM
Yes I fitted new o rings
Am I being a wuss and need to run it longer?
Nope, somethings amiss in there, bite the bullet and chalk it up to experience.
I wondered what the mechanic was on about too :icon_scratch: that will work with centrifugal pumps that are struggling with a suction that's not flooded but all it will do with a gear pump is stop the fluid coming through. Sounds like something he read on the web of lies and repeated without understanding the principles involved.
On the advice of another friend who happens to build sidecars I removed the oil pressure switch, there was no sign of oil so I syringed oil into the switch hole. Then with the switch back in I turned it over without fuel and bingo the light went out. Then fuel on and ran it for a while and the light stayed out.
Maybe the oil I syringed in helped prime the pump?
It's possible you had an air lock but I can't figure out how hat :icon_scratch: but that's a handy thing to know and I'll bet there was a huge sigh when that light went out :wings
Yes - very relieved!!!
Possibly an air lock and the oil from the opposite direction helped drag the oil through...
I've been following this with some interest. After rebuilding my engine the oil pressure light flickered for the first couple minutes or so and then settled in and never had a problem since. I wondered at the time if it was a priming issue but as it was the first time I had ever started the engine was more concerned that it sounded like a tin of nuts and bolts being shaken vigorously. My dismay was absolute and to be frank was beyond caring about oil at the time. Subsequently I found out they all sound like that and indeed mine better than most. Fantastic bikes, but I every time I take it in for a MOT and hear the mechs revving her up in the garage I still cringe.