Case 1740 starting issue

Hello,

I am having an issue with a Case 1740 Uniloader with the D188 diesel engine in it. It has a key, but is push button start. When I try to start the engine it will crank as though it wants to start, but will not fire up, and when I let off of the push button the engine quits cranking but the starter continues to make noise and eventually smokes like it is still spinning and burning itself up.

I recently had the starter rebuilt as I allowed a friend of mine to borrow the machine, and he claimed he somehow was able to start the machine by just turning the key. Had to replace a fuse by the instrument panel as well. Recently replaced the water pump and did a fuel filter replacement as well. The machine fired right up after the filter replacement. I worked it for a half a day and it was smoking while under load, and as I drove up hill it was losing power to the point it would just stop dead in its tracks going uphill.

Any suggestions or advice as to what may cause the starting issue? Any suggestions or ideas why it is losing power? If I can get it started would like to trade it off or sale it as it is actually not big enough for what I had bought it for. And it frequently does not perform well in the mud here in Western Pennsylvania.Thanks for any help!

Rob did you check the engine oil? If diesel is leaking into the
engine it will smoke. I am probably the only one on this forum
that has owned a 1740 Uniloader. Your neighbor didnt add dirty
fuel by chance? Rubber tired skid steers do not like mud. I
walllowed around in the mud with mine loading silage out of ag
bags.

I have had several Case skid steers and several of them had the same problem with the starter still trying to crank the
engine when you let off the button. it is a bad solenoid. not sure how or why but when engaged it will stick closed and it
will drain the battery and will burn up a starter. I cant tell you what to do other than change the solenoid

Get a opinion from Jon f m he is the case
guy hes probably encountered this problem
before

And put in a good battery. A sub par battery will weld the solenoid contacts instead if a quick hot hit and start. Those engines have a heater in the intake to aid starting. Usually turn the key to the left for 30 seconds to make the intake heater work. Does it stop running going up a hill or is the drive belt slipping?? Dad had a 1740 and I have a 1530...never had much trouble if the drive line is kept in good shape.

I can't help much as I know very little
about thise small case engines. Sounds
like two problems tho, a starter issue and
an engine issue. I would start by checking
the starter and wiring and battery to get
the starting issue fixed. The address the
power issue. Might be bad fuel filters or
something. Also check the air filter and
connections for blocckage.

Unfortunately, it sounds like the starter is having a
problem again. Sometimes those Delco starters will
break the stop collar and/or the snap ring will come out
of place on the end of the shaft that hold the drive in
place. This will go unnoticed until the engine it is on
does not start. Then this condition causes the problem
of the starter staying engaged. This is due to the
internal mechanical connection to the solenoid inside
the stater by a ..clutch fork.. setup. The starter drive
mounts on twisted splines that force the drive to
engage in the flywheel. If that stop collar or ring is out
of place the twisted splines push the drive to far out of
position and through the ..fork.. and mechanism inside
hold the solenoid in the ..closed contact.. position and
it keeps cranking. When the engine would start the
flywheel spins faster so the twisted spline help the
drive withdraw from the flywheel and the internal
spring over comes the force and separates the
contacts so the starter stops spinning. The start aid
that Case collector mentioned is an important part of
the puzzle. That needs to be operated in cold weather.
Also mentioned fuel in the oil causing it to overfill is
another issue that was mentioned that could cause the
smoking. I would also suggest to see if a mouse or bird
has made a nest in your air intake for the engine, that
will cause smoke and no power. May also check the
electric solenoid is working that pulls the lever on the
injection pump to give it fuel to run or stop the engine
when denergized. If it has a knob to pull to shut it off it
will not have a solenoid but it is important to make sure
the lever the cable is pulling on the injection pump is
completely returning to the stop in the released
position. I am attaching a video that may help explain
what I am talking about in the starter. The video is of a
large diesel starter such as a semi truck would have,
but the principle is the same. The video is talking about another feature but the two terminals on the left are the ones that are contacted by the washer are what is essentially the switch to turn the starter motor on and off. That is what I am talking about being mechanically held in the on position.
Video