Geoff Weeks Posted 22 hours ago Share Posted 22 hours ago Which bolt has a reverse thread? I can't think of one off the top of my head? Yours is slightly different then the 150's but I don't know of any LH threads on them. Quote Link to comment https://www.bigmacktrucks.com/topic/76436-55-mack-b61/page/3/#findComment-593311 Share on other sites More sharing options...
Freightrain Posted 8 hours ago Share Posted 8 hours ago They make left handed taps in all sizes(std and metric). My work uses them A LOT due to what we make. If you run into issues, let me know as it may be something I have here at work you can use. They do make left hand heli coils so fixing stripped threads shouldn't be a problem. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/76436-55-mack-b61/page/3/#findComment-593322 Share on other sites More sharing options...
mowerman Posted 2 hours ago Share Posted 2 hours ago On 3/19/2026 at 9:53 AM, Geoff Weeks said: 100# for 7 months? wow, you've got a tight system, I thought mine was good a 4 months and enough are to start. That’s the way mine used to be after 30 years it drops around 30 pounds in a month or so….and yes I have the old steam valve Quote Link to comment https://www.bigmacktrucks.com/topic/76436-55-mack-b61/page/3/#findComment-593352 Share on other sites More sharing options...
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