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Old 10-18-2012, 07:18 AM   #316
bmwktmbill
Traveler
 
Joined: Jul 2005
Location: Traveler
Oddometer: 4,794
Thanks Dirty,
I am starting to use the Gasket elininator like I use blue Loctite thread locker on the KTM.

Dab here, dab there, no leaks, no lost nuts and bolts.


bill
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'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing

The faster it goes the faster it breaks.
And high performance=high maintenance.
Bill Shockley
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Old 11-19-2012, 11:47 AM   #317
calimuder
650 brrappp......
 
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Location: lake forest california
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so i found this thread from lc4 pilots thread on rebuilding the lc4s mechanical water pump. mine went out and i ended up with all my radiator fluid filling my case. its time to fix it now and iv started dissasembly and am almost ready to pull my rocker cover. iv been reading over your thread and im wondering what you were refering to when you mentioned de-tension the cam chain tensioner. you said you wouldnt need to do this unless you are rebuilding your pump as i am, but i cant find any type of directions as to how or why to do this, nothing in the rest of your thread or the one about rebuilding the pump
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Old 11-19-2012, 07:39 PM   #318
bmwktmbill
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Location: Traveler
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Cali,
Only necessary to detention cam chain if removing the cam which is unnecessary to rebuild the pump.

Factory manual here in pdf...

http://www.horizonsunlimited.com/hub...ual-98-a-35025

Do pay attention to the dowel pin on the pump and how it fits and the cover tightening sequence. I don't use a torque wrench but many do.

Have you replaced the cam followers? They usually wear out in sinc with the w pump.

If they fail , esp the intake it can be expensive.

bill
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'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing

The faster it goes the faster it breaks.
And high performance=high maintenance.
Bill Shockley
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Old 01-15-2014, 11:51 AM   #319
Dubl-A
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Joined: Mar 2009
Location: 505
Oddometer: 1,593
Quick question for you guru's...

Will (1) tube of HondaBond HT work to complete this job, the dealer said it was like 1.9oz tube.

Thanks for any info!!
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Old 01-15-2014, 11:57 AM   #320
wvrocks
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Location: Elkins, WV
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Quote:
Originally Posted by Dubl-A View Post
Quick question for you guru's...

Will (1) tube of HondaBond HT work to complete this job, the dealer said it was like 1.9oz tube.

Thanks for any info!!
I just bought that size the other day. Looks like it will be plenty although I haven't done the work yet.
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Old 01-15-2014, 12:05 PM   #321
hajoktejnSI
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Location: Ljubljana Slovenia
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Quote:
Originally Posted by bmwktmbill View Post

Do pay attention to the dowel pin on the pump and how it fits and the cover tightening sequence. I don't use a torque wrench but many do.


bill
If you have one that is. Don't want to be a braniac, but my pump doesn't have a pin and has only one o-ring, so I had to apply sealant on it too.
I used this http://www.homehardware.ca/en/rec/in...jc1/R-I8659418 and have let it cure 72 hours before starting the bike.
After 1000 km no leaks so far, at least not visible with the tank on.
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Old 01-15-2014, 12:54 PM   #322
gunnerbuck
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Joined: Nov 2005
Location: N.V.I, B.C.
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Quote:
Originally Posted by Dubl-A View Post
Quick question for you guru's...

Will (1) tube of HondaBond HT work to complete this job, the dealer said it was like 1.9oz tube.

Thanks for any info!!
One tube of Honda bond will do about 50 rockercovers
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Old 01-15-2014, 12:57 PM   #323
Dubl-A
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Thanks WV and Gunner! I appreciate the response
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Old 02-06-2014, 07:43 AM   #324
wvrocks
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Location: Elkins, WV
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Finally getting around to sealing the cover. In my manual it shows sealant on the water pump o-rings. The how to here skips that. Yea or nay?

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Old 02-06-2014, 09:14 AM   #325
gunnerbuck
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Location: N.V.I, B.C.
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The water pump with the double o ring was originally designed to seal as is, but I suspect that after KTM had a few leakers come in under warranty they revised to using sealant on the o rings as an added measure... The first couple times I did my rocker I left the o rings bare with no issues... It was not until I went through the shop manual that I started adding sealant to the water pump, I figured it must be written there fore a reason....
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Old 02-06-2014, 09:28 AM   #326
dirty_sanchez
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I always used Gasket Eliminator 518 or 515 on the sealing surface and in those O-Ring grooves as well.

My old 640A never leaked anything.

Dirty
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Old 02-06-2014, 09:42 AM   #327
bmwktmbill
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Quote:
Originally Posted by dirty_sanchez View Post
I always used Gasket Eliminator 518 or 515 on the sealing surface and in those O-Ring grooves as well.

My old 640A never leaked anything.

Dirty
And on the cover as well!!
Great stuff, replaces Hondabond for me.

Much easier to work with and even more leak resistant.Been usingit everywhere, especially to refresh aging gaskets.

bill
__________________
'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing

The faster it goes the faster it breaks.
And high performance=high maintenance.
Bill Shockley
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Old 02-08-2014, 02:41 AM   #328
tdreyer
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Joined: Mar 2008
Location: Used to live in Crestview FL, now ????
Oddometer: 498
Quote:
Originally Posted by dirty_sanchez View Post
I always used Gasket Eliminator 518 or 515 on the sealing surface and in those O-Ring grooves as well.

My old 640A never leaked anything.

Dirty
On a previous recommendation, way back when, I bought some 510. Would that work on the o-rings as well? I just caught a intake roller going bad and replaced it with a spare set of rockers and rollers I had built up. Now, on this new to me SXC, I seem to have a leak at the front of the water pump. I've re-sealed it twice since the original work and it's really starting to annoy me. I should be getting new o-rings any day now.

I never had to seal the o-rings before but this seems to be a problem for this bike. Thinking maybe one of the o-rings are damaged. Anyway, I hate messy oil leaks so I'm going to smear something on there.

As always Dirty, your. 02 matters for all things Loctite.
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Old 02-08-2014, 01:11 PM   #329
dirty_sanchez
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If you're going to "smear" something-smear an RTV on the suspect area. Just make sure the RTV you use does not have a vinegar smell about it.

I get into vinegar smelling RTV's also known as acetoxy-cure RTV's in the Loctite thread-no need explaining everything again with this response.

If you're looking for a specific suggestion, you're looking for an RTV that says " Sensor Safe" or "Safe for O2 Sensors". If you buy it and open it up and it smells like vinegar-return it. Loctite 598 is my go-to RTV for engines.

510 would be fine to use as a dressing on those O-Ring groves on the water pump on the LC-4. You can't smear it on the outside of the engine though-it'll never cure. You'll have to remove the valve cover, lift up the water pump, draw a bead, then button her back up.

When I had my 640A, the O-Rings on the rocker shafts began to weep ever so slightly-never enough to wet the side of the engine, but enough that dust would stick. I drew a bead around the end of the end of the rocker arm shaft. I had two black O's visible on the spark plug side.

Dirty
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Old 03-01-2014, 04:31 PM   #330
Synthetyk
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Is it possible to smear a small bead around the OUTSIDE of the cover in attempts to keep it from leaking... as a simple I don't want to take off the cover and fubar something up method?
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