bottom rocker leakin...what do i need to know?
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Outstanding HDF Member
Joined: Feb 2009
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From: New Port Richey FL
bottom rocker leakin...what do i need to know?
hey not sure if this is the right spot for this, if not, if the mods could please help me out 
went to bike week this weekend...had a blast lots a fun and lots a stress on the scoot as usual
on the way home i realized i had a leak commin from the top of my front jug, didn't know where at first.
went home and let her cool then washed her to get the weekend and salt water off her and took her for a ride and it looks like its commin from my bottom rocker.
i was hopin it was the top since that is easy enough to do. i'm sure its just a gasket but i haven't ripped off the bottom rocker yet.
i got the book, and it looks pritty strait forward except one part...
it tells me to "rotate crankshaft until both valves are closed on head being removed." is this only if i'm takin off the top part of the jug? (which i'm not goin to do) or do i have to do this just to replace the gasket on the lower rocker?
any other tricks? i know the book has a certain way to take off each bolt so i'll follow those directions. anything to look out for?
o yeah sorry, i got a 04 1200C
thanks guys
went to bike week this weekend...had a blast lots a fun and lots a stress on the scoot as usual
on the way home i realized i had a leak commin from the top of my front jug, didn't know where at first.
went home and let her cool then washed her to get the weekend and salt water off her and took her for a ride and it looks like its commin from my bottom rocker.
i was hopin it was the top since that is easy enough to do. i'm sure its just a gasket but i haven't ripped off the bottom rocker yet.
i got the book, and it looks pritty strait forward except one part...
it tells me to "rotate crankshaft until both valves are closed on head being removed." is this only if i'm takin off the top part of the jug? (which i'm not goin to do) or do i have to do this just to replace the gasket on the lower rocker?
any other tricks? i know the book has a certain way to take off each bolt so i'll follow those directions. anything to look out for?
o yeah sorry, i got a 04 1200C
thanks guys
Tourer
Joined: Apr 2006
Posts: 252
Likes: 0
From: Oceanside CA
hey not sure if this is the right spot for this, if not, if the mods could please help me out
went to bike week this weekend...had a blast lots a fun and lots a stress on the scoot as usual
on the way home i realized i had a leak commin from the top of my front jug, didn't know where at first.
went home and let her cool then washed her to get the weekend and salt water off her and took her for a ride and it looks like its commin from my bottom rocker.
i was hopin it was the top since that is easy enough to do. i'm sure its just a gasket but i haven't ripped off the bottom rocker yet.
i got the book, and it looks pritty strait forward except one part...
it tells me to "rotate crankshaft until both valves are closed on head being removed." is this only if i'm takin off the top part of the jug? (which i'm not goin to do) or do i have to do this just to replace the gasket on the lower rocker?
any other tricks? i know the book has a certain way to take off each bolt so i'll follow those directions. anything to look out for?
o yeah sorry, i got a 04 1200C
thanks guys
went to bike week this weekend...had a blast lots a fun and lots a stress on the scoot as usual
on the way home i realized i had a leak commin from the top of my front jug, didn't know where at first.
went home and let her cool then washed her to get the weekend and salt water off her and took her for a ride and it looks like its commin from my bottom rocker.
i was hopin it was the top since that is easy enough to do. i'm sure its just a gasket but i haven't ripped off the bottom rocker yet.
i got the book, and it looks pritty strait forward except one part...
it tells me to "rotate crankshaft until both valves are closed on head being removed." is this only if i'm takin off the top part of the jug? (which i'm not goin to do) or do i have to do this just to replace the gasket on the lower rocker?
any other tricks? i know the book has a certain way to take off each bolt so i'll follow those directions. anything to look out for?
o yeah sorry, i got a 04 1200C
thanks guys
The Sportster motor has a 3 piece rocker box cover, the bottom piece holds the rocker arms. If you are not going to disturb the lower piece, the one that sits on the head and it is bolted on like my 99 Sportster, there is no need to have the piston at TDC on the compression stroke. Note in the above quote: "rotate crankshaft until both valves are closed on head being removed.". That means that you need to relieve the pressure on the push rods before removing the rocker box from the head.
Good luck with your project.
Thread Starter
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Outstanding HDF Member
Joined: Feb 2009
Posts: 2,228
Likes: 3
From: New Port Richey FL
so is this someone with... "not to much experience on motor work" do in a day? i got a whole week off commin up and i was hoppin to get it outta the way within the first day and then maybe do a little trip.....can a simpleton like me do that?
Thread Starter
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Outstanding HDF Member
Joined: Feb 2009
Posts: 2,228
Likes: 3
From: New Port Richey FL
DAMMIT!! i do that sometimes, sorry, i'm just really green when it comes to anything engine wise.... so are you saying if all i'm doing is replacing a lower gasket i don't need to worry about any of this crankshaft stuff or the making sure everything is decompressed????
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Tourer
Joined: Apr 2006
Posts: 252
Likes: 0
From: Oceanside CA
Hi Old Skool,
Sorry for the curt answer, I had an emergency come up and just now got back to it.
What I was trying to say was that you need to relieve the pressure from the lifters in a specific way before lifting the rocker box off the head. See the factory manual for the details. If you don't have one, get one and a parts manual too; try e-bay for a good deal. The base circle is the back side of the cam (TDC on the compression stroke). Yes, you do need to worry about it.
Good luck, you have to start somewhere, that would be with a factory manual.
Best wishes,
Pixs
Sorry for the curt answer, I had an emergency come up and just now got back to it.
What I was trying to say was that you need to relieve the pressure from the lifters in a specific way before lifting the rocker box off the head. See the factory manual for the details. If you don't have one, get one and a parts manual too; try e-bay for a good deal. The base circle is the back side of the cam (TDC on the compression stroke). Yes, you do need to worry about it.
Good luck, you have to start somewhere, that would be with a factory manual.
Best wishes,
Pixs
Last edited by Pixs; Mar 13, 2009 at 02:52 PM.
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