Ditched the impact wrench for hand tools on injector cups

Used to zip those cups in with a 1/2" impact and wondered why I was chasing leaks in 6 months. Switched to a torque wrench and a little thread sealant after a Cummins ISX blew a cup at 80k miles on I-75... anyone else go back to basics like that?

2 comments

2 Comments

kevin2188d ago

My buddy runs a small shop down in Houston and he had this same problem last year. He was using an impact on injector cups for a fleet of older Freightliners and had three of them pop loose inside six months. Finally he decided to go old school and hand torque everything with a little bit of Loctite on the threads. He told me it added maybe 10 minutes per job but he hasn't had a single comeback since then. Now he calls me every time he sees a tech zipping cups in with an impact and laughs about it. Isn't it funny how sometimes the slow way is actually the fast way in the end?

kelly.dylan7d ago

Yeah @kevin218 that's exactly what I started doing too after chasing loose cups on a Cat motor, hand torque with Loctite never fails.