i've got a 1996 JCB 185 robot 200 hrs. was using it and the hyd. and drive quit have a manual but no component locations anybody know if there are any relays or fuses other than in the fuse box in the cab. checked hyd tank levels they were good any help please
We have a 1999 version of this "wonderful" machine, anyhow as I'm off work till monday don't have access to manual but believe all the relays and such are in the panel in the overhead of cab. The one thing that comes to mind that could cause this problem is the switch and wiring to it that the door activates when it is closed. On ours at least it is at the top front of door opening. With out the wiring diagram in front of me I just assuming it controls one of the relays in the cab. If switch or wiring to it are bad you would have the problem you mention. Also seem to recall thinking we had a problem with ours that turned out to be one of the rocker switches in the cab was in the wrong position. Think it was one for "auxiliary hydraulics"??? We had been plowing snow on a very cold day and who ever had been running it, might have been me!, was wearing heavy gloves and when turning on parking brake must have bumped the other switch.
If the engine runs but no go or lift check the coupler or belt between the pumps and engine first?
On our 185 Robot the hydraulics pump is off the end of the crank under the radiator. The drive pumps are driven by a splined disk bolted to the flywheel like a clutch pressure plate. Did a little quick research on old files. Back in `08 we had the failure like the original poster, no hyd. and no drive and it was the coupler on the back of the engine/fly wheel end. The way I was able to determine that fast was on the front of the pump assembly under the floor there is a cover held on with two bolts. I believe this is a mounting location for some optional pump. I removed this cover and inside you could see the shaft that would drive this optional pump. I then started engine and could see that the shaft was not moving. To access the coupler I removed the engine, not the pumps. Not that pulling the engine is that easy but....... I'm thinking, not a good thing at times, that the reason the hydraulics quit working despite the fact that the main hydraulic pump is driven off the other end of engine is the pilot oil pressure that work the controls gets its pressure from the front pump. One not so fun thing from when I did this job is exactly a month later the flywheel ring gear lost some teeth and I had to pull that engine again So to original poster, check over your ring gear very close while engine is out! One more thing on this machine. When the pump fails on the other end of crankshaft from a broken input shaft try to find a good hydraulic repair shop to buy parts to fix it. We priced a new pump 4 years ago JCB wanted around $2,000.00, our hydraulic repair shop was able to sell us both gears and a seal kit to rebuild ours for $200.00
thanks for all the input ok finally found relay for hyd controls and by passed for test could make boom and bucket move but everything was very slow and no power couldn't find relay or selonoid for drive motors so pump is working it was almost ike valves are not opening all the way or low on oil, is there another resivoir for the hydraulics or just the one on the right rear of machine?
the pump on the front of the machine is spinning not that that means its working properly
At least that seems to prove that it is not the coupler on the engine, saves pulling the engine. Only oil reservoir for the hydraulics would be the right rear corner. Question? Did this problem start all of a sudden? Or has it been getting worse over time?
it happened all of a sudden traming vehicle and it quit. engine running no movement