JD A head Torque spec

JDJACK · Jun 23, 2016

I have been searching the archives for a torque spec for a 44 JD A head. Found 120ft lb. also have read 150# for the black studs in the later A's
So if the studs are black in a 44 block what should it be torqued to? Were the blocks different around the studs which allowed them to be torqued more?

Mike M · Jun 24, 2016

After 50+ years all the studs looked black to me ? So I just always used the higher number.

buickanddeere · Jun 24, 2016

The specs are in the service manual. 1-800-522-7448

Mike M · Jun 24, 2016

Well # 1 this fellow has the specs. and # 2 John Deere NEVER did make a service manual for the model A and never will.
Good thing I & T filled in the missing models.

Mike Aylward · Jun 24, 2016

In many years of working on "A" series tractors this is the method of tightening that I use. Place a small amount of No. 3 (liquid) Permatex on the outside, vertical rails of the gasket taking care NOT to get anything on the inside rails (next to the cylinder). Tighten the head in 10 ft./lb. incrmements in a circular fashion. Set the valves and recheck head torque, valve lash and governor to throttle rod adjustment and you should be good to go. It has never failed me when done this way. Mike

buickanddeere · Jun 24, 2016

(quoted from post at 09:32:50 06/24/16) Well # 1 this fellow has the specs. and # 2 John Deere NEVER did make a service manual for the model A and never will.
Good thing I & T filled in the missing models.

The 60 service manual will address many specs.

JD A head Torque spec

JDJACK

Member

Mike M

Well-known Member

buickanddeere

Well-known Member

Mike M

Well-known Member

Mike Aylward

Well-known Member

buickanddeere

Well-known Member

Similar threads