Front pump bad = no transmission?
 

I recently did some work to the front pump on my '87 300SDL and I need to know: if the transmission will move the car forward, does that mean the front pump is operating?

if your car moves, on a level surface from a dead stop, your front pump is working. for the rear pump to work your car has to be moving I think

if the front pump was bad you would be sitting there idle.

Thanks guys!

you have an amusing signature by the by

Here's the sequel

http://www.peachparts.com/shopforum/diesel-discussion/319750-bad-trans-governor-%3D-no-shift.html

To check the front pump you can measure the working pressure with a gauge. Alternatively you could get really messy and remove a (transmission) oil cooler line and then watch for pressurised fluid (or not) to go squirting all over the place... Don't let a transmission run dry though!

It sums up my experience with cars fairly accurately. :D