Bobcat 310 runs fine wont move

[BYOBCAT]

Hi All, I have a bobcat 310 I have owned for a little over a year now. I have put a little over 100 hours on it since I got it so the hour meter is at 1000. Lift and tilt cylinders leak to the point I have purchased new seals but have yet to put them in. This fall during use the hydraullics would on occasion stop briefly and I would wait a minute or so and they (hydraullic pump) would kick back in and all would be fine. I checked fluids by the manual and they appeared fine which was amazing based on the amount of leakage. Kept using to finish the job until one day hydraullic pump quite working and didn't kick back in. Did some "research" on the internet added 10w30 to the chaincase as it was low (about 2 quarts) which manual said was fine instead of hydraullic fluid. After adding oil pump kicked in enough for me to cycle the lift an tilt cylinders and then quit. Been sitting in the shop on blocks since. Now that holidays are over I want to get it up and running. Starts and runs fine just wont move and seems as if the hydraullic pump wont engage. Any help or advice would be greatly appreciated. Thanks in advance.

 

[Hotrod1830]

Open the rear door with the engine running and see if the belts are turning. The 310 used 2 electric clutches and 2 v-belts to provide high and low speed function, as well as hydraulic pump function. The outer pulley is the low speed, and inner is high speed.

 

[BYOBCAT]

Open the rear door with the engine running and see if the belts are turning. The 310 used 2 electric clutches and 2 v-belts to provide high and low speed function, as well as hydraulic pump function. The outer pulley is the low speed, and inner is high speed.

Thanks Hotrod, I started it up and none of the belts are moving at all. Potentially electrical with engaging clutch?

 

[Hotrod1830]

Thanks Hotrod, I started it up and none of the belts are moving at all. Potentially electrical with engaging clutch?

either a electrical problem or failed clutch. do you still have a button on the top of the left drive stick? That is used for high speed and should engage the inner pulley.
Use a test light and check for voltage at the outer clutch. They may both use the same fuse.

 

[BYOBCAT]

either a electrical problem or failed clutch. do you still have a button on the top of the left drive stick? That is used for high speed and should engage the inner pulley.
Use a test light and check for voltage at the outer clutch. They may both use the same fuse.

Thank you, I looked up how to test resistance on the clutch and it registered 4.8 ohms and from my research it should register between 2 and 5 so that was a good sign. Tested connector from harness and no voltage. Traced it to a pair of ground wires that appeared to be in their connector but was an illusion they were loose, fixed that problem. I think overall it is fixed as when I tried to start it the wheels were turning and it was cranking over more slowly since the clutch I believe was engaging. Wouldnt stay running so assuming it sucked some crap into the carb so will clean that this week and post an update. Appreciate all the help, I know my way around a motor pretty well but not electrical so your comments were very helpful.

 

[BYOBCAT]

Thank you, I looked up how to test resistance on the clutch and it registered 4.8 ohms and from my research it should register between 2 and 5 so that was a good sign. Tested connector from harness and no voltage. Traced it to a pair of ground wires that appeared to be in their connector but was an illusion they were loose, fixed that problem. I think overall it is fixed as when I tried to start it the wheels were turning and it was cranking over more slowly since the clutch I believe was engaging. Wouldnt stay running so assuming it sucked some crap into the carb so will clean that this week and post an update. Appreciate all the help, I know my way around a motor pretty well but not electrical so your comments were very helpful.

OK, thought i had it but not quite there. wasn't sure if i should have started a new thread but figured i would test it here. In my previous post above i described 2 ground wires that were not connected which i believe are for the clutches they both went into the same ring connector which was attached to one of the motor mounts prior to them vibrating out of the ring connector. Thinking i was solving the problem i ran a separate lead to each wire individually and buttcapped them now both having an individual lead to ground on the chassis. The skid loader would start and then immediately die but the low speed clutch was turning the wheels when i would crank it over. Tonight i removed both wires from ground and started loader, fired right up and no clutch engagement which was fine as i didn't expect it to with the wires removed from ground. I connected 1 wire (low speed to ground) and left the other wire not connected to ground and started the loader which ran fine but no low speed clutch engagement. With the loader running when i would touch the other lead (high speed clutch ground wire) to ground the loader would die. Left the loader running with low speed ground wire connected to ground and the high speed ground wire unconnected. when i would press down on the high speed clutch button on the control stick the loader would want to die just like when i connected the high speed ground wire to ground. Here seems to be my problem and the fact that i am not good with wiring. I connected both wires to ground and would start the skidloader which would continue to run fine with low speed clutch engaged as long as i kept the key held in the start position. wondering if it is the switch in the handle causing the skid to want to die when the high speed clutch ground is hooked up and also why i need to have both the high speed clutch ground and low speed clutch ground hooked up for the low speed clutch to even engage?????? anyway any help would be appreciated if anyone has some suggestions.

 

[Hotrod1830]

OK, thought i had it but not quite there. wasn't sure if i should have started a new thread but figured i would test it here. In my previous post above i described 2 ground wires that were not connected which i believe are for the clutches they both went into the same ring connector which was attached to one of the motor mounts prior to them vibrating out of the ring connector. Thinking i was solving the problem i ran a separate lead to each wire individually and buttcapped them now both having an individual lead to ground on the chassis. The skid loader would start and then immediately die but the low speed clutch was turning the wheels when i would crank it over. Tonight i removed both wires from ground and started loader, fired right up and no clutch engagement which was fine as i didn't expect it to with the wires removed from ground. I connected 1 wire (low speed to ground) and left the other wire not connected to ground and started the loader which ran fine but no low speed clutch engagement. With the loader running when i would touch the other lead (high speed clutch ground wire) to ground the loader would die. Left the loader running with low speed ground wire connected to ground and the high speed ground wire unconnected. when i would press down on the high speed clutch button on the control stick the loader would want to die just like when i connected the high speed ground wire to ground. Here seems to be my problem and the fact that i am not good with wiring. I connected both wires to ground and would start the skidloader which would continue to run fine with low speed clutch engaged as long as i kept the key held in the start position. wondering if it is the switch in the handle causing the skid to want to die when the high speed clutch ground is hooked up and also why i need to have both the high speed clutch ground and low speed clutch ground hooked up for the low speed clutch to even engage?????? anyway any help would be appreciated if anyone has some suggestions.

If both clutches are engaged at the same time the engine will indeed stall. You may be on the right track with the switch. That switch operates a standard 5 pin relay. SO you may have a bad switch, shorted wiring to ground between the relay and switch, or a bad relay. A test light would help tremendously at this point. Their cheap, and you should always have one in your tool box if your trying 12 volt electrical repair. Only one wire at one of the clutches should have voltage with the switch pressed/released. ground is constant. When you press the switch, power should stop on the low speed clutch and go the the high speed clutch.

 

[Hotrod1830]

If both clutches are engaged at the same time the engine will indeed stall. You may be on the right track with the switch. That switch operates a standard 5 pin relay. SO you may have a bad switch, shorted wiring to ground between the relay and switch, or a bad relay. A test light would help tremendously at this point. Their cheap, and you should always have one in your tool box if your trying 12 volt electrical repair. Only one wire at one of the clutches should have voltage with the switch pressed/released. ground is constant. When you press the switch, power should stop on the low speed clutch and go the the high speed clutch.

By the way, you should be able to test the clutches with the key on, engine off. They make a distinct metallic click when engaging.

 

[BYOBCAT]

By the way, you should be able to test the clutches with the key on, engine off. They make a distinct metallic click when engaging.

Hi All, apologies for the delay as life sometimes side tracks you unexpectedly. I finally was able to get back to this project and determined it was all electrical. Both clutches tested good, and my 2 speed switch, traced through all my wiring and shored up some connections and re-grounded and machine works fine. Moved onto rebuilding all of the hydraulic lift and tilt cylinders. Thanks for all the help guys!

 

[jonatan Ayala]

Hola tengo la bobcat 310 pero no me va el embrague y lo estoy buscando en España y no lo encuentro, alguien me puede ayudar con alguna empresa que los venda o de segunda mano por favor .