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446 speed control issues


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#1 brokenbudget OFFLINE  

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Posted August 22, 2011 - 05:02 PM

so i made the 446 run good, pulled out about 40-50 lbs of mouse house from under the engine tins, and it doesn't want to over heat now. alls good!:smile1:
however, either going forward or reverse is a little (mostly alot) jerky. weather your trying to speed up or slow down, every increment you move the lever it jerks to that speed sharply.
also, when your going down a hill in low, it wants to "freewheel", so you have to use the parking brake to slow down or stop. haven't tried it in high to see if it also does it in that as of yet, nor reverse.
what do i need to look for? i don't have alot of experience with these cases, or their speed controls. anybody?:blush2:

#2 NUTNDUN OFFLINE  

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Posted August 22, 2011 - 05:16 PM

More then likely you don't have the holding valve which helps maintain speed going down a hill. I think you will experience a little jerkiness with the way the hydro lever is notched for speed adjustments. I am sure someone with a little more experience on the Cases will be able to help you out.
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#3 brokenbudget OFFLINE  

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Posted August 22, 2011 - 05:18 PM

it very well could be the way your saying nutn, i don't have enough know's on these particular tractors:smile1:

#4 olcowhand ONLINE  

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Posted August 22, 2011 - 07:47 PM

I've driven 3 different Case tractors & all of them would jerk with every notch. Pretty much the nature of the beast. I don't know when they started adding the holding valves, but the earlier ones without it could get you plenty hurt if you didn't have good brakes.

#5 mikebramel OFFLINE  

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Posted August 22, 2011 - 09:09 PM

Problem is when you hit the brakes the travel lever returns to neutral. If you look on the dash there is a "retard function for forward and reverse. With the engine at full throttle, go down hill in the "retard" position and it will work pretty good. Dont hit the brakes. Sort of counterintuitive.

Check the linkage for slop. Easy to see with the access plate removed. Also the ball joint going into the valve is something to check

#6 brokenbudget OFFLINE  

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Posted August 23, 2011 - 06:50 AM

:worshippy2:thanx guys!:worshippy2: i knew i could count on yous for the answers i was a needing:worshippy1:
i think it may just be that i'm not exactly in tune with this tractor, don't know the quirks so to speak. good thing it taint mine. i like it, just don't seem to feel comfy using a tiller speed control i guess. considering this particular tractor is going to have a loader added to it in the fall. too many hands not on the steering wheel:puke2:
i'm going to look at the valve and see if there is any problems just in case (:D). i don't really think there is but.....

#7 NUTNDUN OFFLINE  

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Posted August 23, 2011 - 07:21 AM

If it doesn't have a holding valve I would definitely get one before putting a loader on it.

#8 brokenbudget OFFLINE  

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Posted August 23, 2011 - 07:41 AM

If it doesn't have a holding valve I would definitely get one before putting a loader on it.


WHAAAA? and take away all the fun?:bigrofl:
oh yeah, i'll be looking for one before that happens, if it doesn't already have one thats just either dirty, stuck or broken:smile1:

#9 brokenbudget OFFLINE  

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Posted September 05, 2011 - 09:57 AM

OK! so. i went out and gave her a good run for about an hour yesterday. it seems it will sometimes hold on a hill and sometimes it won't:wallbanging: this is in low. will climb a hill no problem.
in high, it will hold everytime, but struggles to get up a 2' high hill. the pump starts whining like a 3 year old kid:blush2: so i guess i have a little more work on this tractor before i see it go.
so what do i need to look at now? where is the 'holding valve' located?
for some reason i can't load a manual for this tractor from anywhere:confuse:
i have top men on the job of figuring that issue out. top men.:bounce:
and the tractor still wants to run a little warm.....:mad2:
OOOOOH WHY DO I PICK THESE EASY JOBS?:D

#10 Billygoat OFFLINE  

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Posted September 05, 2011 - 06:54 PM

what's the serial#? I'll try to find the manual.

#11 brokenbudget OFFLINE  

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Posted September 06, 2011 - 11:35 AM

it'll be the weekend before i get the serial number off of it. i'm outta town at the moment:smile1:

#12 brokenbudget OFFLINE  

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Posted September 10, 2011 - 08:08 AM

okee day! i have the numbers in a pic. easier than using the brain and paper:smile1:
Posted Image
thats the only plate on the tractor. and it's a bit of a pain to get a good pic of:blush2:

#13 brokenbudget OFFLINE  

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Posted September 14, 2011 - 05:25 PM

ttt!

#14 Boss 448 OFFLINE  

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Posted September 21, 2011 - 10:32 AM

the pump starts whining like a 3 year old kid

Something ain't right. According to service bulletins I have seen on this model the pump should whine like a teenager when you take away their iPhone.:bigrofl:

JN




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