The Forestry Forum

General Forestry => Forestry and Logging => Topic started by: KWood255 on April 13, 2014, 08:23:22 PM

Title: Clark 664
Post by: KWood255 on April 13, 2014, 08:23:22 PM
Hello fella's. I looked at a 1980(?) Clark 664 today. It had the 3-53 replaced with a 4-53, with the Allison tranny. Tires are about 20%, and it has one set of chains (worn). Also comes with a real nice snow blade. Overall, the skidder looks alright, but definetly has seen some use in her days. Apparently it sat indoors for over 15 years after the 3-53 failed.

The owner changed a few hoses and all the fluids. He did a nice job modifying the rad cradle to accept the extra length of the 4-53. Unfortunatley, looks like some engine oil has been for forced out of the dipstick tube. Not sure why yet.

Any suggestions would be appreciated.  Any idea on its worth?  Thanks.
Title: Re: Clark 664
Post by: treeslayer2003 on April 13, 2014, 08:44:08 PM
no clark came with a Allison, it should have a clark tranny.
if oil comes out dipstick tube then the breather is plugged.
i'd like to see pics of the engine and mounts, that swap is not easy.
Title: Re: Clark 664
Post by: mad murdock on April 13, 2014, 09:26:11 PM
If the mods were done nicely, it should really snort!!
Title: Re: Clark 664
Post by: KWood255 on April 13, 2014, 10:07:38 PM
Also, can somebody clarify the transmission for me please. There is a Hi/Low lever left of the seat, directly next to the forward/reverse lever.

There is a plunger type shaft that is disconnected, but is accessable near the centre of the skidder, under the seat area. I understand this is a travel gear.

I ran the skidder today in both hi/low range. There was no shifting observed when traveling. Is this a multi speed transmission, or simply a single speed with hi and low ranges?

Thanks again. Really miss my TJ about now....
Title: Re: Clark 664
Post by: treeslayer2003 on April 13, 2014, 10:21:25 PM
yes, high-low, forward-neutral-reverse to the left of the seat. the travel range selector is commonly unhooked to prevent operators from using it as the machine is difficult to control at such high travel speed. you can go from low to high in work range under full power and you should. do not change direction under power.
Title: Re: Clark 664
Post by: KWood255 on April 13, 2014, 10:44:25 PM
Perfect. Thank you. Seems like tons of power with the 4-53!  Will decide tomorrow if she comes home or not.
Title: Re: Clark 664
Post by: coxy on April 14, 2014, 06:34:27 AM
Quote from: treeslayer2003 on April 13, 2014, 10:21:25 PM
yes, high-low, forward-neutral-reverse to the left of the seat. the travel range selector is commonly unhooked to prevent operators from using it as the machine is difficult to control at such high travel speed. you can go from low to high in work range under full power and you should. do not change direction under power.
you can go from high to low or low to high with out coming to a stop or slowing down
Title: Re: Clark 664
Post by: treeslayer2003 on April 14, 2014, 07:58:10 AM
yes, although you obviously wouldn't go high to low full power, you can if the tractor has lugged down pulling a heavy load. think of it this way, your pump is supplying max pressure to the clutches at wide open throttle, why would you want to decrease pressure by slowing the engine while upshifting under load? I know this is the recommendation for the older clarks and funk powershifts.
Title: Re: Clark 664
Post by: NS logging on April 14, 2014, 06:58:40 PM
If the modifications you mentioned were done properly and it was "tinkered up" as you mention, I predict you won't miss that timberjack at all.  Just remember, that first step is a little higher.  Other than that, I think you have graduated to a cadillac
Title: Re: Clark 664
Post by: KWood255 on April 14, 2014, 09:02:16 PM
Thanks for the info fella's. Still waiting to confirm the oil issue. My concern is the possibility of a bad compression ring etc, causing blow-by. If this is the case, costs will go up in a hurry.

Hopefully the fix is much easier, hoping for answers in the next day or so. Any suggestions on a reasonable price for a machine like this?  Looks to be in pretty fair shape, poor tires aside.
Title: Re: Clark 664
Post by: treeslayer2003 on April 14, 2014, 09:36:19 PM
the breather tubes are stopped up, even if it is wore out that is why the dipstick tube leaks.
5-10 thousand depending on condition. unless its grapple.
Title: Re: Clark 664
Post by: RKH Logging on April 15, 2014, 06:45:20 PM
I paid $5000.00 for my 666.
Title: Re: Clark 664
Post by: RKH Logging on April 15, 2014, 06:47:32 PM
my tires are also poor but i got a full spare and a brand new set of ring chains never installed with the machine, for no additional cost.