I have a few simple but odd questions about the 4WD vac system on this
1) If the rear end engages in low when I select 4W low but the front diff
doesn't lock, this means my encoder motor is working right? I would then
look to the vac hoses, diaphragm under the batt tray, and tcase 3 port
2) Regarding the vac actuator under the battery tray, I have 2 questions:
I) can this be checked without pulling the battery and tray??
II) I have heard that a bad actuator/diaphragm under the tray can cause
fluid to backflow through the hoses causing premature
wear/deterioration/etc? Does this mean that if I saw trans/diff fluid at
the vac reservior ball, it was likely from a bad vac switch under the
I am going to replace every single hose and go from there with the cheapest
parts first (dash switch is suspect although I've tried 2 from the boneyards
with the same results so I'm not convinced that's the right place to look).
My pushbutton dash switch will either lock itself out completely or attempt
4WH but then bounce back to 2WHI. 4LOW appears to 'register' on the dash
switch and the rear end certainly gears down although it appears the front
end isn't locking.