3-53 Detroit Not Running

black

Member
Hi all , looking at buying a 230 timberjack skidder with a 3-53 detroit that hasn,t run in years . Don,t dare to
turn it over , just need to move it with a beam trailer . I,m not much of a diesel guy and need to know the first
thing to do with the engine when I get it home .

I got it for scrap price and don't want to work on it in the owners yard in fear he will change his mind about
the sale . I only need to jack -up the blade to move it .
 
The 3-53 can be built into an updated N series engine using the C series injectors. The JD section of this site has several conversation that apply to the 2-53 used in the 435 tractor.
In brief. Higher compression N series pistons/sleeves. Improved spray pattern with C50 injectors, Updated heavier valve and cam follower springs. Re-grind the worn cam. machine blower case for the updated engine oil seal. All new bearings to keep the oil pressure up. Sleeve height is vital. New rod bolts. Install a block heater instead of beating it with ether.
 
We use several 53 series engines and have for years. In an application like that where the RPM changes frequently,the blower driveshafts can and do break. start by pulling the air inlet so you can see the rotors in the blower. Turn the engine over slowly with the accessory drive pulley. If the blower doesnt rotate you found the problem. There is an access plate at the one end.pull the pieces out and put a new one in. If the engine doesn't turn over,loosen the starter and see if that releases the lockup. These cures also apply to 71 series also. military surplus dealers are a source of parts also.
 
carl reitnauer,

this may sound dumb, but will the blower not turning cause the ol Detroit not to run? Please note, i am asking legitimately cause i have not heard that before, and am just wondering what would a detroit with that issue sound like or act like when cranking it over.

Thanks!
 

The two stroke Detroit requires the intake side of the sleeve ports to be pressurized via the blower. On the exhaust stroke the valves open first and the bulk of the exhaust is vented. As the piston is nears bottom dead center.Fresh air from the blower is pushed through the ports in the sleeves. Blowing the rest of the exhaust out past the valves. The valves shut and the piston rises above the sleeve ports.
One of the reasons why a two stroke Detroit has a very long crank stroke/piston travel compared to a four stroke of the same displacement and bore size.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top