Arc weld
Veteran Member
There's a lot of smart guys on this forum so maybe they can help with my repair. I have a Cat track loader with a 3204 engine. I just put new check valves in the transfer pump but had to remove the bolts holding the oil cooler on so I could get the bottom bolt for the transfer pump out. I got it all back together and everything seemed fine, no leaks. I was going to go try it out and drove about 100 yds. I thought I'd check again for any leaks. No fuel leaks but oil was leaking. Closer examination showed that the top mounting tab for the oil cooler had pulled right off. About 3/8" thick. It looks like a spacer because it was such a clean break. I think it's a 5/16" bolt that goes into it. I need to fix it and it's cast iron. I don't know if I can tap it deeper into the housing or not. I read on the welding web about a guy doing a similar repair using nickel rods and just doing very quick welds so it doesn't get hot. I can take the transfer pump off but the injection pump is above that and I don't want to take that off. Looking for some good ideas on the easiest way to fix it. Thanks in advance!