Quote:
Was talking to Ross and he thought wipers would run fine off the engine vacuum.
I expect it will too. The only reason for the aux pump is to provide a bit of a safety margin when engine vacuum quits. The aux pump provides vacuum but at a much lower volume which is only sufficient to keep the motor slowly moving. Doubt you would be running the car at full throttle or have it under a heavy load very often and that would be about the only time the aux pump would take over.
Since your original pump is gone, if you still have the balance valve and line entering the block port do make sure that any remaining plumbing to the old pump is well capped so you do not have a hidden leak. The selection feature of the balance valve and the second check valve just before the line connects to the block port cannot be relied upon to prevent a leak.
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=252087