G JD

[mn1200TK]

having trouble getting manifold studs to stop leaking anti freze on a 38 jd g any ideas

 

[coonie minnie]

Are you using the actual studs from Deere, or bolts? I believe the studs have threads that are just a bit different?

 

[Patsdeere]

Correct. There is a taper on the Deere studs. If using bolts or off the shelf studs, then it is much more prone to leak.

 

[Fixingfarmer]

There are brass pushrod sleeves that are driven into the head just below the manifold studs. More than likely its leaking water inside also. At least on my b it was pretty easy to drive them in and out but the head has to be off. I drilled into one on accident trying to get a stud out. As long as the right end of the stud is installed it should not matter if you got the wrong one or not as long as you put it in the right way as far as causing a leak. Theres only so many threads on the small end. I personally just go grab grade 5 bolts,torque, and plan on replacing them again soon if you use it for work.

 

[mn1200TK]

these studs came from steiner tractor did not think they were tapered are jd tapered

 

[Mike(NEOhio)]

Steiner is your problem. I ordered twice from them, never again. Second time I sent everything back and it cost me shipping both ways. Manifold studs I got were just cold rolled rods with die cut threads. Studs have threads rolled a bit larger on one end so they stay tight in assembly. You can see it if you have a trained eye or check them with a nut to be sure.

 

[Mike(NEOhio)]

Forgot to add: try Allen's Fasteners.

 

[jd2cyl1943]

Maybe check your head gasket, it may not be the studs.

 

[620 John]

I've got regular grade 5 or 8 bolts in my B. I used Permatex Ultra Copper silicone on the threads. I think the Ultra Copper is the highest temp silicone I've found. After 2 years so far no leaks.

 

[mn1200TK]

steiner is the problem i guess orderd new studs from deere 44.00 dollars each ouch thank for all the info

 

[MSD]

I don't think the studs are tapered but the thread angle is different on one end.