Vickers rotating group replacement

[timk]

We have several Tennant sweepers that use a Vickers TA-15V10-1B-11543 transmission. I've replaced rotating groups 923062 several times and noticed length of pins 248811 can vary .125" between rotating groups purchased. The longer pins require the rotating group to be compressed to remove/reinstall bearing race and retaining ring on shaft. I think this would cause increased pressure placed on the valve plate by the cylinder block. Is there a reason for the varying pin lengths and should I be concerned about it? I would also like to know what length 248811 pins should be.

[Doug Hanson]

I think someone has substituded PVB 15 rotating group for your TA15. They are almost the same. they are the same except for the pins. TA15 should have 248811 pins, the PVB15 Rotating group part# 938273 uses 248812 pins.
Sorry I don't have the lengths, but I would assume the longer pins go into the TA to provide more resistance against the higher barrel lift off force used in a closed loop pump.