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Thanks I did some checking and it looks like the water pump belt was turning, but it was slipping. I could turn it with my hand. The radiator also had alot of dirt in it. I have washed ot out. The problem I am having is that the set screw on the pulley is broken off flush. I have not found a drill t...

I have a 1956 420C 5 roller which might be overheating, but I would like some advice. I have put a new temp guage on it last year. The machine is running at 210 F when I work it over an hour. i have noticed that the oil pressure drops from 22psi to 10 or less when it is running that temp. I usually ...

Yes that's the one. Thanks for the tip. It should not come off that way!!
Shawn

I was wondering if anyone has had any problems with the snap ring that holds the linkage that pushes the throwout bearing. It is a very small snap ring and I don't think it will stay on the shaft groove. has anyone tried any other methods to keep the ring from snapping off and having to break the do...

Thanks for the tip I will Try that to see if that works. The engine does not miss a beat while running, but I need to address it before something happens.
Shawn

I was wondering if anyone out their has had their crawler do this. I rencently put a new head on my 420C about 4 hours ago and I ran it over the holidays pushing brush pretty hard and I noticed that the temp was 175 and the oil pressure was 25PSI but their was some oil seeping around the head. I cut...

I was running my 420c the other day for about one hour when I noticed that the oil pressure guage had dropped from 21psi to about 15psi. I slowed the engine down and the guage red about 5 psi at idle. This dozer was not used much from the previous owner so I first changed the oil and filter and foun...

Put me Down for a 420C 5 Roller

Shawn

Thanks for the tip Lavoy. I finally got it drilled out and will be putting it back together this weekend.
Shawn

Thanks for the tip Lavoy. I took or I say drilled the nozzle out yesterday and I could run a wire throught the port. I think that someone might have put the wrong one in the carb, because I so no rust on the inside.
Thanks for the help,
Shawn

It was soaked in a gallon bucket of gunk carb cleaner. I wonder if the nozzle is where it is stopped up. I have not been able to get it out, but I am going to try again. I have ran a wire down the hole on the bowl and it stops and will not go any further. Could the nozzle be turned in a way that the...

I am having problems with my TSX 641 carb on my 420c crawler. I took it off because it would not idle at all. I would adjust the air bleed screw and nothing would change. So I took it apart and soaked it for 2 days in parts cleaner. I ran a wire through all the ports in the top of the carb and blew ...

Gary, I think it could possibly be something totally different. If it runs great without a load, then chokes completely down it could be your condensor in the distributor. Yes, I said condensor. That $3.00 part had me all confused two different machines a 430T and my other 430W. They ran fine the da...

I was wondering how much trouble it is to adjust my tracks up on my 420c 5 roller. From the looks of it I don't think it has been moved in a long time. I noticed that someone had a track adjuster on e-bay for a 430c or 420c and the decription said that it was a hydraulic track adjuster. I did not th...