What's new
By:
Car Wash Forum

This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

310 pump issue

L

lenny351

New member
Hi all. Looking for a little insight on what I think may be an issue with my spare 310 pump. I finally got around to tearing into it to replace the seals and a general cleanup to prepare it to be put back in service. When I removed the head, it seems as though the ceramic plungers have a lot of play in them before the actual crank and rod begins to move. I would say maybe a 1/4 to 3/8". I have never noticed this in any 310's that I have torn apart. I really don't want to disassemble another one to check, so I thought I would ask on here. Long story short, is this normal? thanks. I don't remember any issues with the pump prior to being taken from service.
 
No, it's not normal. You can take the back cover off the crankcase and make sure the bolts haven't backed out of the connecting rod caps. There should be NO perceptible play in the plungers. Make sure the bolts on the plungers themselves aren't loose too.
 
Thanks. That was my thought but wanted to ask the pros. I will disassemble and check it out. The pump is old.
 
If you need a Cat 310 crackcase, watch EBay I see a few Cat 310 crankcases on there every now and then.
 
You must log in or register to reply here.
Back
Top