55-51sn

[Anubisxc70]

A few questions.

Are there any difference between the 55-51sn for v70 and xc70?

If we buy one body valve will it be plug and play or there is another procedure to do?

Vida tells me my gearbox is a 55-50SN but the tag says 55-51SN 8675 148 Serial 03EV700659 ??????

Im thinking getting a used body valve for 55-51SN and recondition it. What expects me in terms of fail??

Many Thanks

[Georgeandkira]

There was a great post where the fellow mentioned that there were 2 different plugs available on valve bodies. I cannot remember the specifics.

[jgjones095]

From what I have read on us xc owners forums the valve bodies are not specific.

There are however different versions no casting and A on the valve body casting have solenoids in different locations to the newer B version.

If you buy a new one then it will be a B. If yours is it not a B then you need to extend wiring.

My advice buy a new body or recond one.
Don't buy a seconds hand one as are prone to failure on the early models.

If you are buying a gearbox to replace it has to be a aw55 51sn due to the awd sleeve to the transfer box.

[Anubisxc70]

i understand, the one im looking is from 2004

[VOLVOBOY]

Hi.
Year 2005 and up should have a B5 Valve control valve spring fitted. Earlier vehicles should not.
As for the valve body assemblies .. A and B internals are practically identical.
C and No Letter internals are practically identical. Spring ratings and check-valves being the notable differences.

The more stuff you change out the more of the gearbox adaptation process you will have to do. This requires VIDA.

[Anubisxc70]

Im a bit lost in those A B C ..I have VIDA

[VOLVOBOY]

The valve-pack assemblies have a casting letter on them...
from the earliest = no letter , then A , B , and C.