K11 Owners Group

RobBowker

K1100LT 1998. 39,000 miles

I have had a good scout through the pump-related posts here and watched Mike's/spidiq8's/M1ks's videos but they seem mostly to do with replacing seals rather than diagnosis, so I hope nobody minds me opening a new thread.

I'm still a little intimated working on the bike, but I reckon I'm up to a pump removal if not a full seal service.

It started with barely nothing but now I'm seeing a small droplet of oil after riding accumulating at the bottom of the pump cover. It seems to trickle down from behind the oil pump in what Clymer would call the 2 o'clock position looking at the bike from the front.

Apparently this indicates that the oil relief U channel is blocked.

There is neither water nor oil dripping from the weep hole, which is unobstructed as far as I can tell.

I THINK this means I need to drain fluids, remove the pump, clean up the oil relief U channel (with a needle, syringe or what - advice welcome?). Replace the O rings, clean up the mating surfaces and screw and ThreeBond the thing back on - avoiding the U channel

Does the lack of any fluid from the weep hole mean my pump seals are OK?

I'm fairly sure someone's been in there before as the visible bolts are all stainless.

So far, all I have done is pull the fairing lowers, clean up the crud, take it for a thrash round the bypass and watch for the source of fresh oil on returning back home.

If I don't need to replace the seals, would it be wise to do it anyway, given that I'm in there with fluids drained and fairing's off etc?

Also, is it just my copy or are all the photos of the removal procedure in the Clymer manual upside down?

Any help with the diagnosis would be warmly welcome. Thanks in advance!
_________________
1998 K1100LT SE
1995 Honda NTV 650 P (now sold)
1986 BMW R80RT TIC (the money pit - sold)
1981 CX500B (sold)
1981 Honda C70 (sold)
1981 Honda C90 (written off on a gravelly bend!)
1960s BSA Bantam D7 (never did get it running)

bobdcamp · Posted: Mon Apr 03, 2017 8:17 pm Post subject:

Look at your water tank, does it look like a pool of scum. Wher my oil
seal, shaft went south my RS started sucking oil into the coolent. I had no
water in the oil. The lix was replacing the water pump shaft and flushing
out the cooling system. NOT a easy thing to do

Good luck Bob

SugarHillCTD · Posted: Mon Apr 03, 2017 8:52 pm Post subject:

Here is the thread that I posted a few years ago about the water/oil pump leak.

http://k11og.org/forum/viewtopic.php?t=8395&highlight=channel

Last year I had the seal leak on the oil pump, so instead of trying to replace the seals, I just bought a new water/oil pump assembly.

But I don't think I would replace the pump shaft seals if they aren't leaking.

BTW, if you do remove the pump, look at the manual. After you remove all the pump cover bolts, there are bolts inside the pump that need to be removed to pull the pump off.

Also, after you check out and/or clean out the U channel and are prepping the engine to bolt the pump on, use VERY little sealant on the clean engine surfaces.

If you have any questions- post them. LOTS of experience here on the Owners Group.

Good luck- but it isn't a very difficult job.
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

RobBowker · Posted: Tue Apr 04, 2017 6:13 am Post subject:

Thanks SugarHillCTD. This and your historic link push me in the direction of a blocked U channel so I'll give it a go. ThreeBond seems to be recommended so I'll get some of that and a couple of O rings. Thanks again, Rob
_________________
1998 K1100LT SE
1995 Honda NTV 650 P (now sold)
1986 BMW R80RT TIC (the money pit - sold)
1981 CX500B (sold)
1981 Honda C70 (sold)
1981 Honda C90 (written off on a gravelly bend!)
1960s BSA Bantam D7 (never did get it running)

SugarHillCTD · Posted: Tue Apr 04, 2017 6:37 am Post subject:

Good luck!

John
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

RobBowker · Posted: Tue Apr 04, 2017 6:47 am Post subject:

Thanks. The coolant is overdue for replacement but I just did an oil change recently but it'll be worth the effort to get the Nether Regions looking (and smelling) less toxic.
_________________
1998 K1100LT SE
1995 Honda NTV 650 P (now sold)
1986 BMW R80RT TIC (the money pit - sold)
1981 CX500B (sold)
1981 Honda C70 (sold)
1981 Honda C90 (written off on a gravelly bend!)
1960s BSA Bantam D7 (never did get it running)

RobBowker · Posted: Tue Apr 04, 2017 8:10 am Post subject: