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Tracy Martin TN 
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10811
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 Topic: SC D15 II lift trouble, need help!
Posted: 05 Apr 2020 at 7:02pm |
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My series II SC D15 is giving me fits. Last year I thought the traction booster was stuck, wasn't sure. You couldn't plow with it, it would raise all the time. Couldn't adjust it to lower correctly. Even pulling disc it would raise it. Now if you start it, the lift raised and won't lower at all. Lever has no effect, lift lower or traction booster lever. It sounds like pump is working and won't shut off. Hopefully it will leak down enough I can unhook the plow. What would be causing this? Any help appreciated. Thanks Tracy
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No greater gift than healthy grandkids!
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MACK
Orange Level
Joined: 17 Nov 2009
Points: 7664
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Posted: 05 Apr 2020 at 9:12pm |
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Is a 3pt or SC ? Linkage needs freed up or more tension on torsion spring. Torsion bar if 3pt. MACK
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10811
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Posted: 05 Apr 2020 at 11:09pm |
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Mack, it is a snap coupler.This tractor worked great for several years. I don't use it much. Just started doing this on its own. What would make the lift all of a sudden just pick up as soon as tractor starts. Even with lift lever down? Why does both levers have no effect now? Thanks Tracy.
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No greater gift than healthy grandkids!
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22825
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Posted: 05 Apr 2020 at 11:20pm |
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The traction boost valve is stuck causing the ump to never unload.
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MACK
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Joined: 17 Nov 2009
Points: 7664
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Posted: 06 Apr 2020 at 7:21am |
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If all external linkage is free and adjusted properly, spool valve in pump could be stuck or linkage inside unhooked. MACK
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10811
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Posted: 06 Apr 2020 at 9:33am |
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Mack, what is best way to free it up and or check it out? How does pump come out? Does this happen often? Thanks Tracy
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No greater gift than healthy grandkids!
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MACK
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Joined: 17 Nov 2009
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Posted: 06 Apr 2020 at 10:13pm |
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Not too common. Remove linkage from pump cover, remove cover ( screw a bolt in threaded hole in front of cover to brake loose), compress spring along side of pump and install nail in hole of spring shaft. Remove cotter key and spring assembly. Get lift arms down if possible. Remove lube line, remove 3 bolts holding pump in. With a pry bar, pry pump loose. When it comes free, it will drop like a rock. Disassemble pump and clean. MACK
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10811
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Posted: 06 Apr 2020 at 11:10pm |
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Mack, I will do this. Thanks Tracy
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No greater gift than healthy grandkids!
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24715
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Posted: 07 Apr 2020 at 5:34am |
hmmm, I'm wondering if in Mack's list of instructions, shouldn't the first thing to do is drain the oil ? Assuming the D15 is the same as D14 , it'll make a mess of the floor......
just thought I'd ask... I know some things are obvious...but sometimes we get 'focused' and ,um, well, kinda...oopsy..... BTDT.. Jay
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10811
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Posted: 07 Apr 2020 at 8:47am |
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Jay, yes we would drain oil first. Thanks tracy
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No greater gift than healthy grandkids!
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24715
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Posted: 09 Apr 2020 at 6:21am |
when drained, be sure to put the plug back in...IMMEDIATELY !!!
no need to ask WHY answering my phone while holding onto it was a BAD idea.... 
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Dave(inMA)
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Joined: 12 Sep 2009
Location: Grafton, MA
Points: 2399
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Posted: 09 Apr 2020 at 6:41am |
Jay, you certainly seem to have some interesting adventures!!
I left all three drain plugs out of the CA when I was working on its hydraulics to give it plenty of time to drain. I hung a big sign on it that said "NO OIL, NO PLUGS" to remind me to replace the plugs and add oil! Happily that worked.
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WC, CA, D14, WD45
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24715
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Posted: 09 Apr 2020 at 8:11am |
I try NOT to repeat mistakes, always seem to make NEW ones though   I cleared out a LOT of space in the shop next door, looks real weird to SEE the floor.... ... mind you that's only temporary as 'someone' has already eyed the space...
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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