CAT 287B Skidsteer Hydraulic Problem

[bmanlyo]

Not at the moment, between rain and a new baby haven't had time. So yours works every once in a while on one track

 

[oldtom]

"o ring face " are used on all new cats smaller hyraulic lines

 

[kshansen]

"o ring face " are used on all new cats smaller hyraulic lines

True but if, like many newer machines we have they have the quick connect fittings in many places. These look much like to oil sample ports but use a coupler Part number 6V4144.

 

[bmanlyo]

Yes our test or check ports look just like the oil or hydraulic check ports, some kind of quick connect. Is this the part number at cat.

 

[Derrickm]

It quit pulling altogether, the mechanic found the outside bearing in the drive motor down

 

[kshansen]

Yes our test or check ports look just like the oil or hydraulic check ports, some kind of quick connect. Is this the part number at cat.

Yes the 6V4144 is the Cat part number for the coupler. My cost is $35.00+/-

Not sure if there is anyone else who makes them, could do a Google search on the part number.

 

[oldtom]

Yes the 6V4144 is the Cat part number for the coupler. My cost is $35.00+/-

Not sure if there is anyone else who makes them, could do a Google search on the part number.

can get from most hydraulic hose supplyers

 

[bmanlyo]

Thanks will be testing the ports this weekend. Will post results when complete

 

[Texas Stone]

I have a 287b with a very similar issue. Is it possible you could send a copy of the file to me?

 

[k.gotua]

Hello,
I have problem, after half hour working left truck lost the power.

 

[antpoo]

I could send you a 8 page file that shows the drive motors and brake that identifies the ports and explains a lot about them.

I would need a direct email address as the file is too big to post here.

email me at

Hello, would I be able to see this file also please? My tack moto hose blew and I'm trying to locate which one to remove.

My email is aj_groves@hotmail.com

Thanks and regards
Andy

 

[Tech1322]

Hello I'm having a very odd problem with a 2007 cat 287B I just purchased
ser # CAT0287BAZSA03488
The machine runs ok at idle and all bucket functions work normal but when I try to drive it forward or reverse it builds pressure like the breaks are holding it and stars to stall the engine BUT if I lift the boom full speed and drive it wi go like normal other than when you turn right it wants to turn left and and when you turn left it wants to turn right but forward and reverse is working normal directions as long as I'm lifting the boom.
The second I release the boom joystick it builds pressure and almost stalls out.
If I lift slowly it will barely move so to move I have to pull the joystick full up or down so I can move.
I am a mechanic I have worked on dozer's excavators skidsteers and much more but after buying the $40 repair manual that doesn't help much I'm stumped.
This one has beaten me so far.
Please anything would be greatly appreciated

 

[Nige]

A full service manual (new) for that machine probably costs North of $800. Look online for Cat Publication RENR4880.
Did you buy the Operation & Maintenance Manual by any chance.?

The left/right turn issue could be that someone has messed with electrical wiring for the joystick that controls the steering.

This particular machine Serial Number (ZSA03488) has been on HEF before. I just need some help to track down the relevant threads regarding why.

 

[Nige]

Ha....!! Knew it......
Not that it's going to fix your issue but at least it gives you a bit of background.

https://www.heavyequipmentforums.com/threads/cat-287-hydraulic-pump.87117/#post-943925
https://www.heavyequipmentforums.com/threads/cat-287b-no-movement.86806/

 

[Nige]

The left/right turn issue could be that someone has messed with electrical wiring for the joystick that controls the steering.

Or it could be hoses installed incorrectly........

See the other two threads. I wonder if the hose installations for the travel are so fcuked up that there is no return path to tank for the oil from the travel motors until you open the return to tank from the lift/tilt implement valve by engaging the lift function..?

 

[Tech1322]

Or it could be hoses installed incorrectly........

See the other two threads. I wonder if the hose installations for the travel are so fcuked up that there is no return path to tank for the oil from the travel motors until you open the return to tank from the lift/tilt implement valve by engaging the lift function..?

The guy I bought this from had a couple hoses reversed and the drive pump was bypassing #14