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[porthole]

Do you "need" all the tools listed in the manual to replace the O-rings and ancillary sealing parts?

[Twolanerider]

Really not much in the way of "special" tools at all Duane.  It's just lifting off a head and cylinder.  Easiest if its the front jug.  If it's the rear maybe some cut down allen tools to get at a few bolts with a little more ease.  Ring compressor and a cylinder hone; but there is nothing Harley specific about those tools.  You can gain some room for the rear by lowering the engine at the front mount.

You might save the hone job and perhaps a set of rings by doing as some suggest and taking the piston off with the cylinder.  Working with just one pair of hands that is something I have never been able to manage though.  It leads to bad words being spoken at a high cyclical rate and tools that take flight.  Might be easier with an extra pair of hands helping you.  But I gave up on trying after my second attempt at it many many years ago.

[HD Street Performance]

If it is not using oil and leakdown is normal just pull the cylinders and don't hone it. Of course the visual inspection will tell a lot too. If you do pull the clip on the wristpin and leave the pistons in the barrels be sure to cover the open holes in the case because those clips can be called big bad swear words sometimes , if you get the drift.

[porthole]

This is for LtBawb's bike. He has oil seeping, seems mostly to be the rear cylinder, at the base. I'm debating whether to try and get it done in a day or two or have him go to the dealer.
If it was mine there would be no question. Although if it was mine I would wait until I was ready to do more (cylinders-heads etc).

My thoughts are to just pull the heads and pop the pins out, leaving the pistons in the jugs. He only has about 15-16K and no oil issues.

The book shows a special tool to just get the cir clips out, and another if the pin doesn't slide out.
And a Snap-On dog bone for torquing the rocker supports and the special wrenches (although they don't look so special).

And the plate to rest the piston on - that looks like something I could make with a piece of wood or some of that slick marine Starboard I have.

Don did you give up doing it yourself - or just if you didn't have help?

It is assumed that Bob wil be there to help - watch - cuss at me 

[porthole]

But I gave up on trying after my second attempt at it many many years ago.

Is there something I need to look for here?

For as close as his and my SEEG's are, they are quite different. Especially when if comes down to the oil pump and chain tensioners. If you remember, his were wiped at 15K and mine looked like I could double the the 36K I had on them.

[Twolanerider]

Duane, I've seen various specialty tools for pins and keepers but have never bought them.  Have always managed to handle them w/o too much difficulty with the normal tools in the box.  The specialty tools might make some part of the task easier (I can't say as I've never had them) but I can't justify the expense when I can do the task anyway and might use them once every third blue moon.

[CVOMOE!!]

Sounds like it's time for a 107" kit to me.  It would be a shame to tear it down that far and not do something with it.
No special tools required.

Cheers, Moe

[porthole]

Sounds like it's time for a 107" kit to me.  It would be a shame to tear it down that far and not do something with it.
No special tools required.

Cheers, Moe

Not my bike and this will be a quick turn around hopefully

[hdbrad03]

You may not like this idea but I have performed it without any leaks. I had forgot to apply 1 oring to the rear cylinder base. Oh chit!! I just streched the oring over the cylinder and let it set for an hour or so and it returned to the original size. The cylinder has never leaked. Leave the piston inside the cylinder bar over engine allow the cylinder and the piston come out of the crankcase. Make sure you do not allow the piston to come out of the bottom of the cylinder.


 
      Brad

[Twolanerider]

You may not like this idea but I have performed it without any leaks. I had forgot to apply 1 oring to the rear cylinder base. Oh chit!! I just streched the oring over the cylinder and let it set for an hour or so and it returned to the original size. The cylinder has never leaked. Leave the piston inside the cylinder bar over engine allow the cylinder and the piston come out of the crankcase. Make sure you do not allow the piston to come out of the bottom of the cylinder.


 
      Brad

Have to admit that's an option I'd never thought of...

[porthole]

H'mm, food for thought. Kind of like the way we used to do Chrysler head gaskets in the 4 cylinder and v-6 engines.

[Twolanerider]

H'mm, food for thought. Kind of like the way we used to do Chrysler head gaskets in the 4 cylinder and v-6 engines.

You know the drill Duane.  If you give it a shot this is definitely one for:

 

[porthole]

Only problem is it is not my bike.

Any sealer used on the base at all?
Anything to look for to see why it leaks?
Or do some of them just leak - no matter what you do?

[Twolanerider]

Only problem is it is not my bike.

Any sealer used on the base at all?
Anything to look for to see why it leaks?
Or do some of them just leak - no matter what you do?

I've never used a sealant down there Duane.  Rarely is a sealant called for with o-ring seals.  And, yeah, sometimes it's just a leak.  On rare occasion I've seen drain back plugged up that seemed to be causative so that's worth eyeballing.  But you'll be eyeballing all that as it comes apart anyway.

[ultrafxr]

I've never used a sealant down there Duane.  Rarely is a sealant called for with o-ring seals.  And, yeah, sometimes it's just a leak.  On rare occasion I've seen drain back plugged up that seemed to be causative so that's worth eyeballing.  But you'll be eyeballing all that as it comes apart anyway.

The voice of 'inexperience' speaks since I've never personally done this.  However with that being said I developed a leak at the base of my front cylinder after they did the 110 recall/update/improvement whatever you want to call it which involved new/revised/improved/at least different base gaskets.  After a second repair which did not fix the problem they replaced the cylinder.  I quizzed my service manager and he told me that they always use a sealant.  Don't know what exactly but wanted to add this for what it is worth - probably not much, lol.