I have a Bobcat 863 non Boss sn 514428790. Valve light on Bics is flashing 3 times, I have 14.5 volts to coil new coil and valve. The control valve doesn't have lock out solenoids. Aux hyd lights on panel above switch come on, I hit thumb switch doesn't seem to move fluid. Took nuts off on top of aux coils hit thumb switch seems to be magnetized. Don't have attachment on I just figured lines would load engine. Lift tilt work brake release and holds. I've poured over all posts here to get where I've got so far. Just trying to get everything working if possible. Any and all suggestions would be appreciated.
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863 hydraulic info needed
- Thread starter Okie RR
- Start date
rmllarue91
Senior Member
Hey okie two thoughts main spool stuck or line relief is two low.
Thanks for reply. I put new seals on lift and tilt spools. (Thanks to Willie59"s write up) I know there's a aux spool is that the main spool? Should I be getting lift tilt with valve light flashing? Mine doen't have lift tilt lockout solenods, I assumed if Bics solenoid valve wasn't open I wouldn,t have lift/tilt. Just trying to wrap my head around how this works.
xgiovannix12
Senior Member
when was the filter last changed ? is the machine running fine ?
crewchief888
Senior Member
you shouldnt have lift/tilt if the valve light is flashing
older units will sometimes light up the hyd light when the oil is cold.
the idiot light is tied to both the pressure switch and filter bypass switch.
Thanks for the info Crewcchief. I'll just run it awhile and see if light go off. I put new coils on aux hydrailic solenoids I'm going to check them and aux spool to make sure it's free. Any suggestions on checking solenoids to make sure coil operates valve.you shouldnt have lift/tilt if the valve light is flashing
older units will sometimes light up the hyd light when the oil is cold.
the idiot light is tied to both the pressure switch and filter bypass switch.
The filter was changed 6 months ago probably doesn't have 4 hours on it but I've had system opened up I'm sure it may have got a little debris in it. I'll put new one on for good measure. I'm also running aw46 I don't know if that could be to thick.
crewchief888
Senior Member
the aux controller is probably on the LH side of the inner frame.
when you activate the aux button 2 times, both should come on, no flashing lights.
rear aux should be noticeable, i believe the rear aux couplers would be sticking out on the side frame between the loader arm and lift cyl. or they could be at the rear of the cab, between the cab and grill.
with hi flow there should be an additional hyd pump hanging off the RH end of the hyd pump/hydrostat, also should be valve assembly with a solenoid, it may be on the hi flow pump, or remote mounted.
bobcat had a habit of moving things around, most machines/options, plumbing and electrical were VERY serial number specific.
from what i remember seeing, the hi flow outlet should be Tee'd into the aux tubeline somewhat close to the valve.
Update pulled the aux spool it wasn't stuck but did have black gunk in the ends. The big block under left side has to be some kind of control valve. it has 2 small lines that go to right rear they are capped. It also has several larger lines several solenoids maybe 3, machine also has hiflow on lift cylinders a switch on left dash with yellow light. My question is there isn't a control module for aux hyd unless it is in that cluster under left side. I just want to get the aux hyd in front to work the rst isn't overly important to me right now. Any help would be appreciated. Also today was the first time in 4 months it moved under it own power today.
Crewchief I think it only has a single hydaulic pump must just be rear aux. Is the aux control module in with the rear aux control valve block? Appreciate the info.the aux controller is probably on the LH side of the inner frame.
when you activate the aux button 2 times, both should come on, no flashing lights.
rear aux should be noticeable, i believe the rear aux couplers would be sticking out on the side frame between the loader arm and lift cyl. or they could be at the rear of the cab, between the cab and grill.
with hi flow there should be an additional hyd pump hanging off the RH end of the hyd pump/hydrostat, also should be valve assembly with a solenoid, it may be on the hi flow pump, or remote mounted.
bobcat had a habit of moving things around, most machines/options, plumbing and electrical were VERY serial number specific.
from what i remember seeing, the hi flow outlet should be Tee'd into the aux tubeline somewhat close to the valve.
crewchief888
Senior Member
the rear aux control valve should be a stand alone valve, i dont think the rear aux controls are activated through the aux controller.
ive only seen 1 older machine with rear aux.
you may be able to find some info on bobcat.com in the online parts portal. rear aux kit is listed under accessories/option, the kit instructions may give you some idea..
personally i'd remove all the rear aux "stuff". the only thing ive ever seen (on older machines) connected to them were rear stabilizers for use with a backhoe attachment...
if you are getting flash codes from the aux button lights, look in the operators manual, i believe theres a chart that will tell you what the number of flashes mean...
If I remove it the line that go to main control valve can I just cap them, that would get rid of some of the conjestion. Thanksthe rear aux control valve should be a stand alone valve, i dont think the rear aux controls are activated through the aux controller.
ive only seen 1 older machine with rear aux.
you may be able to find some info on bobcat.com in the online parts portal. rear aux kit is listed under accessories/option, the kit instructions may give you some idea..
personally i'd remove all the rear aux "stuff". the only thing ive ever seen (on older machines) connected to them were rear stabilizers for use with a backhoe attachment...
if you are getting flash codes from the aux button lights, look in the operators manual, i believe theres a chart that will tell you what the number of flashes mean...
I does have double pump. The hiflow block on bobcat parts looks like what I have sorry learning as I go. But it does have 2 lines going to back from this block. so does Hiflow block control anything about front aux hyd except hiflow. This wasn't even a good canidate for a parts machine when I started, between this forum and service manual I've got through till now.Thanks
crewchief888
Senior Member
You could compare the part numbers between the hi flow controller and the aux controller. I don't think the hi flow has anything to do with the aux
crewchief888
Senior Member
it's possible the aux stem ( valve) is stuck and not working.
pull the coils and stems, ign on, but do not start, turn on aux at the dash, use RH paddle and see if the plungers are moving.
pull the coils and stems, ign on, but do not start, turn on aux at the dash, use RH paddle and see if the plungers are moving.