An interesting report on wear factors in Stanadyne DB2 pumps

IDIBRONCO

IDIBRONCO
Joined
Feb 5, 2010
Posts
12,237
Reaction score
10,925
Location
edmond, ks
No surprise there. Jet A is a very dry fuel. Very pure kerosene basically.
Not to mention that if I remember right, you needed specially hardened internals to run jet fuel in the winter time in places like Alaska.
 

nelstomlinson

Full Access Member
Joined
Oct 21, 2015
Posts
1,077
Reaction score
690
Location
Delta Junction AK
Yes, the report mentions an Arctic conversion kit with much harder components to minimize wear with dry fuels. Looks like the dry fuels mostly wore the transfer pump and hydraulic head assembly.

Here's something interesting from the report:
Failure could not be initiated by pumping cold fuel [50*F (10C)] into a hot pump [180*F
(82°C)]. However, immediate failure occurred when sufficiently hot fuel was passed through a
cold pump.
Fortunately, we are unlikely to have hot fuel when the pump is cold.
 

Clb

Another old truck
Supporting Member
Joined
Mar 1, 2013
Posts
5,702
Reaction score
2,163
Location
nannyfornia
Someone put the in the tech section!
 
Top