RE: Vacuum Line Question/ I Found This
>Would anyone actually have a photo of the vacuum fitting
>that goes into the block to get the oil pump vacuum? I need
>a pic or part number but a photo would be best.
>I also don't know how the line was run, or the type of line (rubber
>or metal and the size) and I need to know where to connect
>it. If I understand you correctly the vacuum from the oil
>pump should run the wiper motor after it's actuated to
>eliminate wiper stall when passing in the rain or climbing a
>steep grade. But why use intake vacuum at all then? The
>vacuum that runs to the washer vacuum switch also runs to
>the washer actuator switch so the wipers start when the
>washer switch is pushed and lowering the washer pump drive
>wheel onto the backside of the generator belt. If the vacuum
>from the oil pump just runs actuator and washer then the
>wiper motor would still stall under low engine intake vacuum
>I thought the oil pump vacuum pump ran the wiper motor, the
>washer and the actuator. Am I wrong?
The manifold vacuum is stronger than the pump vacuum and it is easly available without putting stress on the vacuum pump.
Does the BIRD shop manual give routing details? The MERC does not. I came across a rerouting diagram from a LINC-MERC TSB but this was to increase the accessory vacuum used to activate heater servos.