1 spline lube and main seal with a sidecar subframe Mon Oct 28, 2019 11:33 am
tinyspuds
Life time member
I’m finding the K a bit like four wheel drive atm: it just lets you get in deeper before you get stuck!
Need to sense check something with my fellow sidecar folks please.
I’m stripping down to do a full spline lube and thought I may as well do the main seal while I’m there. I’ve read pretty much everything I can find here but the chair has turned a fairly straightforward job into a bit of a head scratcher.
-Wheel out
-Final drive disconnected
-RH fixed swing arm pivot out
-LH pivot allen recess stripped (probs loctite) so threaded portion only half out
-battery out
-coil cover off
-starter out
My Hedingham subframe bolts into the centre stand mounts, carries up to near the top of the radiator where it ends in a cross member bolted at each end. The sub at the back wont allow the transmission to draw back and also restricts access to the centre trans bolt on the LH side.
My thinking is:
-Remove the ‘centre stand’ bolts (done)
-Loosen the subframe cross member bolts at the front
-Detach the sidecar upper struts from the OEM frame
-Jack the engine and OEM frame up until the trans clears the subframe
-Remove the OEM frame rear leg bolts from the trans and then proceed as per the solo book.
Does that sound like a plan?
At a push I could remove the lower chair struts and pivot the subframe down, which I guess is no more precarious than a standless solo.
I still have the issue of needing to take the swing arm and final drive shaft out with the tranny but as far as I can see, that’s just a weight rather than access issue (and thanks to a younger CF, I happen to know the gearbox weighs 34lbs).
Whilst writing it occurs to me that there must be an element of dropping the trans slightly to clear the rear frame legs, so I may have to drop the subframe anyway, or winch the OEM frame up (which in turn must mean loosening the front engine mounts too.
I just know you conscientious spline lubers must have solved this problem many times.
Thanks as ever.
Stu
Need to sense check something with my fellow sidecar folks please.
I’m stripping down to do a full spline lube and thought I may as well do the main seal while I’m there. I’ve read pretty much everything I can find here but the chair has turned a fairly straightforward job into a bit of a head scratcher.
-Wheel out
-Final drive disconnected
-RH fixed swing arm pivot out
-LH pivot allen recess stripped (probs loctite) so threaded portion only half out
-battery out
-coil cover off
-starter out
My Hedingham subframe bolts into the centre stand mounts, carries up to near the top of the radiator where it ends in a cross member bolted at each end. The sub at the back wont allow the transmission to draw back and also restricts access to the centre trans bolt on the LH side.
My thinking is:
-Remove the ‘centre stand’ bolts (done)
-Loosen the subframe cross member bolts at the front
-Detach the sidecar upper struts from the OEM frame
-Jack the engine and OEM frame up until the trans clears the subframe
-Remove the OEM frame rear leg bolts from the trans and then proceed as per the solo book.
Does that sound like a plan?
At a push I could remove the lower chair struts and pivot the subframe down, which I guess is no more precarious than a standless solo.
I still have the issue of needing to take the swing arm and final drive shaft out with the tranny but as far as I can see, that’s just a weight rather than access issue (and thanks to a younger CF, I happen to know the gearbox weighs 34lbs).
Whilst writing it occurs to me that there must be an element of dropping the trans slightly to clear the rear frame legs, so I may have to drop the subframe anyway, or winch the OEM frame up (which in turn must mean loosening the front engine mounts too.
I just know you conscientious spline lubers must have solved this problem many times.
Thanks as ever.
Stu
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1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106.
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
2000 Hayabusa with Charnwood chair, Wasp forks and EZS wheels.