1992 Thomas 133 skid steer.

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docks

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Jul 13, 2026
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I'm the proud owner of a 1992 Thomas skid steer which I absolutely love even though it's technically an antique. I do have two issues happening at the moment though first one is one fuel injector leaking and was wondering if anyone could tell me where to purchase parts? Second issue is my battery keeps draining. The alternator is putting out 14 volts but if I leave the machine for a day I come back to a dead battery. Doesn't appear to be any arcing that the battery post. Any input on these matters would be greatly appreciated.
 
Moved this over to the Thomas Skidsteer Forum where the folks who actually run these old machines will see it and can help you track down that injector and chase the battery drain. For the injector parts, guys there usually point to aftermarket diesel parts suppliers since Thomas is out of business, someone will chime in with specifics. On the battery, with the alternator reading good and no arcing at the post, it's likely a slow parasitic draw somewhere, worth pulling fuses one at a time overnight to isolate it, but let's see what the Thomas crew says.
 
to speed up finding that draw , pull off on post at the battery put a amp meter in series there and pull one fuse and relays at a time till draw goes away,start with the amp meter on 10 amps till you see how many amps it is pulling and adjust accordingly. I think around 25 milliamps is the suggested drain for electronics to keep up active.
 
When I had my T-133, I used to get parts from AL Parts in NB Canada. But after the company restarted production, parts were only available through a Thomas dealer. I'm in upstate NY, so my closest dealer was in the Albany area. They would ship parts directly to me. As for the engine, you should be running a Kubota V1902. Those parts are readily available many places. I replaced everything from a head gasket, water pump, fan, gear pump, Injector fuel lines, and many miscellaneous parts that way. Try eBay, Friday Parts, LPS, etc. The guys at AL Parts also sent me links to the repair manuals (which include the wiring diagrams-which I had to refer to many times) which were a real help when doing work. It was a good machine, light and maneuverable, and I hated to let it go. I have a YouTube video out there somewhere showing the head gasket replacement.
 
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