2001 Bobcat 863

[meigsbil]

Bobcat moves a few inches then stalls like the brakes are locked. The bucket works fine. We had used it a few hours with no problems. Put in in garage, put new filter in compartment behind seat. Started it up and wouldn't move.

 

[antfarmer2]

What kind of filter hydro?.........did you fill it with fluid?...........any warning lights?

 

[meigsbil]

What kind of filter hydro?.........did you fill it with fluid?...........any warning lights?

it is full of fluid, no warning lights

 

[meigsbil]

it is full of fluid, no warning lights

There is some kind of air filter behind the seat below window in cab.

 

[antfarmer2]

What kind of filter hydro?.........did you fill it with fluid?...........any warning lights?

You messed with seat take a look at the seat switch and the brake switch and any crap around both

 

[meigsbil]

You messed with seat take a look at the seat switch and the brake switch and any crap around both

I was thinking maybe seat switch, but couldn't get seat up to check. Have bounced on it quite a bit, to no avail. The brake switch is above front window in cab.

 

[antfarmer2]

You messed with seat take a look at the seat switch and the brake switch and any crap around both

On my 743 there are plugs that you are easy to knock loose on the left side of the seat........since it worked find more than likely you hit something take a good look

 

[meigsbil]

On my 743 there are plugs that you are easy to knock loose on the left side of the seat........since it worked find more than likely you hit something take a good look

We'll check that out tomorrow. Thanks. Where is a good place to download a service manual or owner's manual

 

[antfarmer2]

We'll check that out tomorrow. Thanks. Where is a good place to download a service manual or owner's manual

I would look at ebay cd about ten bucks check back here latter a lot of info from great members

 

[Bobcatdan]

I would look at ebay cd about ten bucks check back here latter a lot of info from great members

If the bucket works fine, we know the hydraulic system is fine. Is it setting any codes, most problems with the brake solenoid will set codes, but not always. Check the brake solenoid anyway, if the top is cracked, it is either bad or will be bad soon. Here is a good test for you, when you start it, does the glow plug count down run? If it does, you have an RPM sensor problem. The brake won't release because the control doesn't think the engine is running. RPM won't set a code.

 

[Bobcatdan]

If the bucket works fine, we know the hydraulic system is fine. Is it setting any codes, most problems with the brake solenoid will set codes, but not always. Check the brake solenoid anyway, if the top is cracked, it is either bad or will be bad soon. Here is a good test for you, when you start it, does the glow plug count down run? If it does, you have an RPM sensor problem. The brake won't release because the control doesn't think the engine is running. RPM won't set a code.

A 2001 G series doesn't have a seat switch, since the bucket works, we know the safety system is working.

 

[meigsbil]

If the bucket works fine, we know the hydraulic system is fine. Is it setting any codes, most problems with the brake solenoid will set codes, but not always. Check the brake solenoid anyway, if the top is cracked, it is either bad or will be bad soon. Here is a good test for you, when you start it, does the glow plug count down run? If it does, you have an RPM sensor problem. The brake won't release because the control doesn't think the engine is running. RPM won't set a code.

We looked in the fuse panel below seat, found traction fuse and traction relay. Replaced fuse and relay. Did not help. Is there a brake fuse or relay somewhere else? There are no codes stored, and the glow plug count down runs. Is the RPM sensor a cam sensor or a crank sensor?

 

[antfarmer2]

We looked in the fuse panel below seat, found traction fuse and traction relay. Replaced fuse and relay. Did not help. Is there a brake fuse or relay somewhere else? There are no codes stored, and the glow plug count down runs. Is the RPM sensor a cam sensor or a crank sensor?

 

[Bobcatdan]

So the glow plugs count down while the engine is running? Then that is a sign of rpm problems. The rpm sensor screws into the bell housing near the starter. It is plastic and has a jam nut on it. You can try taking it out and starting the engine. With the engine running, stick a wood dowel or such in the hole to polish the flywheel surface, they sometimes can get rusty and cause problems. When installing the rpm sensor, thread it in until it bottoms out. Run the jam down, but not tight. Back the rpm sensor out without the jam nut spinning until you have a 0.050" gap. Tighten the jam nut. Check the wiring over real good before getting a new sensor as I have seen a number with rub threw cause a problem. The 30 amp traction lock fuse and relay are the brake fuse and relay.

 

[meigsbil]

So the glow plugs count down while the engine is running? Then that is a sign of rpm problems. The rpm sensor screws into the bell housing near the starter. It is plastic and has a jam nut on it. You can try taking it out and starting the engine. With the engine running, stick a wood dowel or such in the hole to polish the flywheel surface, they sometimes can get rusty and cause problems. When installing the rpm sensor, thread it in until it bottoms out. Run the jam down, but not tight. Back the rpm sensor out without the jam nut spinning until you have a 0.050" gap. Tighten the jam nut. Check the wiring over real good before getting a new sensor as I have seen a number with rub threw cause a problem. The 30 amp traction lock fuse and relay are the brake fuse and relay.

Thanks, We'll try that tomorrow at work.