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Author Topic: Clark 667d grapple skidder  (Read 2799 times)

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Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #20 on: February 07, 2021, 10:56:38 PM »
Will got some of it done today.. Didn't take long at all.. Should of had it all done but had a unexpected calf 3 weeks early so spent all Saturday making sure she lived.. Gonna be -3 here in a couple days so had some stuff to make up instead..
But I did find a crack on the converter body.. Should I be concerned about this... Picture follows

 

 

Online mike_belben

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Re: Clark 667d grapple skidder
« Reply #21 on: February 08, 2021, 08:53:49 AM »
Well thats not good, but i dont know if its the culprit.  

Look at locknstitch for repair. 
Revelation 3:20

Online Tacotodd

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Re: Clark 667d grapple skidder
« Reply #22 on: February 08, 2021, 11:07:14 AM »
@mike_belben  what is locknstich? 
Trying harder everyday.

Online mike_belben

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Re: Clark 667d grapple skidder
« Reply #23 on: February 08, 2021, 11:44:58 AM »
Revelation 3:20

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #24 on: February 08, 2021, 06:42:45 PM »
That is an issue, but unrelated to your issue at hand unless a leak there got the transmission level too low.  That is likely from a past u joint failure where the prop shaft u joint broke loose and hit the hydraulic pump.  

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #25 on: February 09, 2021, 12:47:24 AM »
I was not thinking that was the cause of the initial problem but just another issue at have.
Kiko where is the best spot to rig up the transmission to pick it out? Get my balance about right and all .

Online mike_belben

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Re: Clark 667d grapple skidder
« Reply #26 on: February 09, 2021, 07:37:08 AM »
I looked too quickly, saw the yoke and thought it was the trans.  Lock and stitch probably wont be the right choice.  



Cast iron right? 


I think id try to replace it.  If thats not possible i might vee it out slightly and try to tig it up with nyrod 99 or other silicon bronze type filler. A low melting temp material so as not to distort the housing.  But its gonna need a pre and post heat and slow cooldown. Probably should be gutted to do it.    
Revelation 3:20

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #27 on: February 09, 2021, 02:06:42 PM »
Think it could be ran with that crack for the 20-40 hours I might put on it in a normal year? I work a full time job this is for some thinning on about 200 acres.. Until retirement in 7-10 of I'm lucky then maybe more after that.

Online mike_belben

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Re: Clark 667d grapple skidder
« Reply #28 on: February 09, 2021, 03:43:44 PM »
if oil is oozing out id fix it.  if not id probably try to run it and keep tabs.  

if the answer isn't obvious clean the area real good and put some paint liberally on the crease.  that way if the paint cracks again you know its reopening at some point.  it is also possible that the crack is on the suction side of the thing and lets in air.  i have no idea what I'm really even looking at.. just that hydraulic housings either hold fluid pressure in or ambient air out, generally speaking.  if that housing still does so, maybe you can get by with it.  


the lock and stitch is a good system but if there is a machined interior surface and a component there it would be a challenge to make that work.
Revelation 3:20

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #29 on: February 09, 2021, 04:43:35 PM »
I thought I had said it was on the converter housing but I might have left that out.. So it's on the converter housing right next to the hydraulic pump that tons the steering and blade I believe..

I don't know or don't think there is any pressure on that side but I really don't have any idea I'm not familiar with how that operates. But it is like a automatic transmission then it would probably have fluid in there.

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #30 on: February 09, 2021, 07:16:21 PM »
No pressure right there just splash lube for the accessory pump drive gears. Scratch ,clean it and JB it. I am not familiar with swinge set up.  Does the swinger have a dedicated pump? The fixed grapple clarks I have dealt with had two pumps driven off the torque converter housing. The cast steel case housing pump is hydraulic and the aluminum housing pump is the transmission pump.  

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #31 on: February 10, 2021, 01:52:19 AM »
Kiko
Yes a total of 3 pumps driven off converter. Two hydraulic and the one charge pump.
Two separate hydraulic tanks one for bade-steering one for the swing grapple.

Where do you pick from on the tranny for correct balance. Hoping to do that this week other things got in the way again and did a little clean up so I could find the bolts tonight.

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #32 on: February 10, 2021, 04:18:45 PM »
We would remove a bolt from the rear cover and one from the front. With longer bolt, 7/16 I think, hook a chain. 

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #33 on: February 10, 2021, 06:24:00 PM »
Kiko

Would you spend the time to drill the end of the crack and just fill the hole with epoxy so it won't leak? That way the crack wouldn't run anymore. Ya I know not the "correct" fix but a little more then just a cover up fix.

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #34 on: February 10, 2021, 07:44:40 PM »
IMO i would just put the weld in a tube on it.  A debur bit gives the weld glue something  to grab .  The only way to fix it correctly is to replace the housing. You seem to familiar with equipment .  I would get into the transmission first to make the decision how much money your willing to spend.  A full on rebuild including torque converter and charge/transmission pump may be in order because of contamination from the clutch failure. The charge pump has an aluminum housing and inside of the pump will almost certainly be damaged. If you it do yourself I will help you the whole way through, brings back the glory days.

Offline Snowdemon

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Re: Clark 667d grapple skidder
« Reply #35 on: February 10, 2021, 09:45:21 PM »
Kiko..
So the way I look at the book where the second gear clutch pack is... Is there a reason I have to pull the tranny out? Can't I just pull the front cover off while it's in the machine and get two if not all three clutch packs out the front? Little tighter then doing on the shop bench but wouldn't have to borrow the boom truck and un hook more hydraulic hoses.

 

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #36 on: February 10, 2021, 09:54:34 PM »
By removing the front cover you can access both clutch sides of the reverse third clutch shaft. You can also access the forward side only of the forward second. You can see in the parts diagram that the F2 shaft slides through the case and the a gear and snap ring is installed on that shaft. The rear section must be removed to access that snap ring. 

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #37 on: February 10, 2021, 09:59:29 PM »
Hold that thought.  

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #38 on: February 10, 2021, 10:10:22 PM »
Stated above is correct.  The gear and snap ring is actually on the R3 shaft. R3 can be pulled off the large splined gear that goes in side 3rd  fiber clutches  The rear cover and low clutch would have to be removed to get to another snap ring to remove F2 .

Offline kiko

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Re: Clark 667d grapple skidder
« Reply #39 on: February 10, 2021, 10:17:38 PM »
 

 


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