engine specs and info on the 57 john deere 420

   / engine specs and info on the 57 john deere 420 #1  

nickk

New member
Joined
May 13, 2015
Messages
1
Location
port hope ontario
Tractor
john deere 40/420
hi i'm new to the forum. i need the engine spec and cylinder bore tolerances for the jd 420. the tractor has a knock and i've pin pointed the problem to the cylinder pin bushing and connecting rod bearing . i'm hoping i don't also have to bore out the cylinder if i dont have to.

Thanks,
Nick k
 
   / engine specs and info on the 57 john deere 420 #2  
the JD web site has the parts book for free.
The nice folks at 1-800-522-7448 have the real JD service and operators manuals on CD or hard copy. In IT manual is best rolled up and used to swat flies.
make sure the oil passage to the valve train isn't blocked when re-assembling. This would be the time to install a new bushing in the distributor and ensure the advance weights work freely. Over advanced timing will pound wrist pins, rings, rods and rod bearings to bits.
 

Tractor & Equipment Auctions

2015 MACK ELITE LEU633 GARBAGE TRUCK (A51243)
2015 MACK ELITE...
2016 Chevrolet Caprice Sedan (A50324)
2016 Chevrolet...
2013 MACK GU813 GRANITE ROLL OFF TRUCK (A50854)
2013 MACK GU813...
2015 KENWORTH T370 QUINT AXLE DUMP TRUCK (A51222)
2015 KENWORTH T370...
2007 Peterbilt 335 Mickey AO-A Battery Truck (A50323)
2007 Peterbilt 335...
INGERSOLL RAND G25 GENERATOR (A50854)
INGERSOLL RAND G25...
 
Top