[time-nuts] Efratom MRT Unit help

[Shawn]

Hi Guys,

Refurbing a couple MRT units, one is a Hi Temp model and the other a
portable.  Both have battery charging issues, the voltage is to low for
SLA batteries these days, 26.5V instead of 27.5V.  

Looking online, I am finding it difficult to find an actual manual on
the MRT portion of the unit, lots of FRK and FRT items but the MRT
differs from the FRT in many respects.  Suggwestions?

Shawn