Macman Posted September 11 Share Posted September 11 The trunnion mounts are cracked on my LTL, as well as the cross member under the cab. What have you guys done in this situation? Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted September 11 Share Posted September 11 years back one of my customer/ part-time jobs had a B61SX which had cracked trunnions, they had a professional welder come in and make repair the right way. he cut a massive gouge in trunnion and with stick rod rewelded back to new condition. todays world everything wire feed welders . the prep is the important part. if BOTH sides are cracked ,you are in different position. $$$ and time wise a set of cut off replacements might be the way to go. with all the cracks , has this unit been over worked? or abused ! Quote Link to comment Share on other sites More sharing options...
Macman Posted September 11 Author Share Posted September 11 I am sure the truck was over worked, I don’t know. Where does one find parts for these trucks? Quote Link to comment Share on other sites More sharing options...
Brocky Posted September 11 Share Posted September 11 Start with Barry at Watts Mack, the sponsor of this website!!! Quote Brocky Link to comment Share on other sites More sharing options...
blackdog2 Posted September 12 Share Posted September 12 There are a lot of after market made with 1"-plate ? 1 Quote Ed Link to comment Share on other sites More sharing options...
Popular Post mackaholic Posted September 13 Popular Post Share Posted September 13 I am guessing both the trunnion mounts and crossmember are aluminum? I took my trunnion mounts to an old school welding shop and had them welded up. They were not impressed with the quality(or lack of) in Mack's castings. I'm hoping they will hold up for truck show type use but I wouldn't want to use them for hauling any weight. As for the cab crossmember, If it's not too badly broken it can also be welded. About 5 years ago I had a couple of new aluminum crossmembers cast. All spoken for now but if you needed one I can check into what it would cost in todays dollars. Was about $1100/copy the last time. I didn't have an aluminum crossmember for my LTL so repair wasn't an option. 3 Quote Link to comment Share on other sites More sharing options...
mattb73lt Posted September 16 Share Posted September 16 I'm sure the quality of that new casting is way above the original. when I had my frame completely apart all of my aluminum castings were of pretty poor quality, never mind the years of use and corrosion damage. A lot of them needed repair and re-machining. Quote Link to comment Share on other sites More sharing options...
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