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D6T joystick problem

D

deep n cheep

Member
Joined
Jan 11, 2015
Messages
11
Location
ks
I have a 2011 D6T dozer that dosent lower the blade like it should. In the past the blade had three positions; when you pushed it ahead a little it would lower slowly then if you push it ahead even further it would drop really fast, and clear ahead it would go to float. Now when ever I run it and push it ahead 3/4 of the way it drops really slow, and when ever I push it all the way ahead it causes the cylinders to chatter loudly and still lowers slow. I wonder if there is valve some where that is being restricted and/or not being opened all the way? I was wondering if anyone has ran into a problem like this before or knows what might be wrong?
thanks,
 
D

d9gdon

Senior Member
Joined
Feb 12, 2010
Messages
1,517
Location
central texas
deep n cheep said:
I have a 2011 D6T dozer that dosent lower the blade like it should. In the past the blade had three positions; when you pushed it ahead a little it would lower slowly then if you push it ahead even further it would drop really fast, and clear ahead it would go to float. Now when ever I run it and push it ahead 3/4 of the way it drops really slow, and when ever I push it all the way ahead it causes the cylinders to chatter loudly and still lowers slow. I wonder if there is valve some where that is being restricted and/or not being opened all the way? I was wondering if anyone has ran into a problem like this before or knows what might be wrong?
thanks,
Click to expand...

Yes, I had the same thing happen on a rental dozer about the same year model. They tore into the quick drop valves and took the seat and floorboard out going through some valve but they never did find the problem. This one didn't make any noise it just wouldn't lower the blade fast.
 
Junkyard

Junkyard

Senior Member
Joined
Jun 5, 2016
Messages
3,637
Location
Claremore, OK
Occupation
Field Mechanic
I 2nd looking at the linkage. The D7R I took care of acted funky like that and it was a linkage issue. All the hydraulic components themselves were fine. Start with the simple stuff and work your way into harder.
 
R

rdr

Well-Known Member
Joined
Dec 24, 2007
Messages
47
Location
usa
fixed mine today it is a lay sn the pilot accumulator had lost its charge
 
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