645 Loader With Simms Injection Pump

It can be a bit of a guessing game with fuel issues before you determine the problem. You want to eliminate the easier possibilities first. If cranking at cold start gives you grey smoke you know it's getting fuel and a sniff of ether is enough to make it fire. It likely has a heater plug in the intake manifold for heating the air on intake but they often do not function on older machines. It could have restriction in the fuel filters or in the pick line from the tank. When I had a Fiat Allis FR12 (same as a 545 loader) hard starting was caused by poor pressure from the primary fuel pump. It was a really big help if the fuel tank was close to full. I ended up installing an electric fuel lift pump. You want to avoid buying a different injection pump to save expense. If you switch to 12V you definitely have to put in a 12V starter also or it will be far too slow for good starts. You shouldn't have any overheating problems with converter or transmission ordinarily for driving down the road. I used to drive my 745 loader good distances without overheating of any kind. I wish you all the best while shopping for a loader, the 645 is a good machine.

Well, it turns out the fitting on the inlet side of the little boost pump on the simms injection pump was loose, the boost pump was more than half full of dirt/gunk and it also leaked out the pressure line fitting that goes into the injection pump. Upon clearing all that up it smokes like a freight train under load.

One question, why is this engine so quiet with a straight pipe on it and my 210 tractor is so loud with one?

Made the deal, they will deliver on Thursday. I was a little nervous running it down the road that distance as it has been sitting for a year and a half at the dealer and I am quite certain it was not used much from the farmer it came from for a while as to its overall condition. Yeah, and about getting it running, I got it running as the dealer left me with the hired man from the farm that borrowed it from them to get it started. Know anything about how the brakes work? Are they air over hydraulic? Seems the parking brake was air activated and the brake pedals seem to release air when you take your foot off them but there are two hydraulic master cylinders I am guessing one for the front and one for the back brakes (???) Seemed to be a broken brake line on the front and not sure on the back but they definitely are not working. Think the smoke may have come from the old fuel in the tank or maybe the turbo is just a little slow as it sure did not sound like it was turning like my 210 does. The exhaust pipe on the 645 sticks through the hood about 8" and the one on my 210 is over the roof of the cab. No muffler on either machine...yeah now that I think this through if the turbo is not spinning it would smoke and would be quieter. Hmm another thing to fix I guess. Air filters were only a couple years old by the date written on them and almost no dirt fell out of them when I thumped them on the hood. I'll blow them out when it gets here and look at the turbo with the compressor side open when running, bet she is seized up. Seemed as thought the fellow told me after it was running he may have run it out of fuel last time it was running, would explain why the fuel cable was out when I climbed in the cab. One battery is toast, but they boosted it with a 12 volt pickup and it started up. Imagine it will spin over much faster when I put a couple good batteries in it. Windshield is broken bad though, any body know where I could find a good one?

After I had it running and was sort of shaking it down the farmer asked me if I would use it grade his laneway and spread out the truckload of gravel he had behind the barn. I kind of wish I had had the nerve to drive it home as I would not be surprised if he used it after I left. Hope he does not run it out of fuel again. I have never found any machine as completely dry of fuel as it was in my life...well...except one of my truck when the fuel filter rotted out on the bottom...

Edited by Amos - 31 Mar 2014 at 8:38pm