JDcrawlers Messageboard

Hi,

Ah, well. Batteries. Always going bad and needing replacement. I have gone thru three so far this year.

Stan

Hi, Well, the MC has limited usefulness v a 420 or later. Or, even a 40. Three roller, so really meant just for drawbar work. Or, that toolbar they had for it. If you put a blade or a bucket on front, it is too front heavy. The 40 added 4-rollers and the 420 5-rollers. So, a 61 blade on the 4-roller...

Hi, I saw a lot of busted 435 tractors back in the 70s. Ripped out ring gears. Seems as the 2-53 overpowered the 430 driveline when using the drawbar. Where it shined was when using the 1000 RPM PTO on that baler. And, I think that was the idea in the first place. However farmers would see that powe...

Hi, The only 2-53 equipped machine I had experience with was the 435 wheel tractor. Running a 3-string baler with the 1000 RPM PTO. That said, I do recall it sounding like an industrial vacuum cleaner. Later, the same baler was behind a 4020. Talk about a difference in machines! But, the 4020 wasn't...

Hi,

Yank the wire off the fuel solenoid. If it quits, the key isn't dropping power. If it keeps running, the solenoid is stuck.

Stan

Hi, The electronic control modules for 12v point systems are common enough. The 6v ones used to be but pretty much disappeared as new in the 80s. They were a favorite with the older Volkswagon crowd, but those as 6v had dwindled down by the 1980s. Probably need a car show swap meet to find one these...

Hi, Well, 12v on the 6v starter is Bad News, as already pointed out. But, there are 12v field coils and armatures to correct that. Then the coil is wrong, but a ballast resistor fixes that. Or, some folks use a 12v coil. Just changing to a 12v generator isn't quite enough, changing the voltage regul...

Hi,

Champion plug number is H-10.

I use Autolite 216 plugs myself.

Stan

Hi, The rails are the chains and pads. The original name for a crawler was Tracklayer. More akin to a train than a cart, running on rails rather than directly on the ground. The rails can't be solid like with a train because they have to be picked up and laid back down in front of the machine. So, t...

Hi, The link-to-link center spacing is growing longer with time and wear. So, now the force on the chains is causing the bushing to slide up the side of the sprocket teeth. This accelerates wear on the teeth. The bushing is supposed to turn within the root of the tooth, but now it is sliding up the ...

Hi, Another, often overlooked, item is the fuel tank vent. Bugs like to plug that tube. It then tends to pull a vacuum and stall out the lift pump. An easy check for that is open the fuel cap right after it quits. If you hear air flow as the cap gasket releases, you have to clear out the vent tube. ...

Hi, I would pull the starter first and see what is up with that. If the pinion is engaged with the ring gear, and you pull on the machine, that will likely wreck the starter. And, where do you get a replacement these days? You can get them rebuilt, but it is hard to find another one. Especially the ...

Hi, The Bendix unit mentioned above... That pushes the pinion gear forward to engage the ring gear when the starter is energized. There is a spring the pinion pushes against to hold it back when disengaged. It might be broken or just weak. So, the pinion gear might still be engaged with the ring gea...

Hi,

These 6v starters don't have solenoids. Just that manual switch on top.

Stan

Hi, The original 420 generator used a regulator in a box with two relays in it. One was the settable voltage regulation relay. The other was the On/Off (aka Cutout) relay that opened up when the ignition was switched off. Together, they operate the field windings inside the generator. A two-brush ge...