Bud’s Posted April 3, 2018 Share Posted April 3, 2018 I’m brand new to this site, I have owned my truck for a little over two years and have been going through it little by little. It’s a 1986 R688st The fella that I purchased the truck off of installed over sized brass trunnion bushing’s unit sometime ago, turns out they are worn out, and this is my solution, what a beast. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/ Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 Here’s 2 more 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395759 Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 1 more 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395761 Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 I definitely have my work cut out for me, I spoke to a couple of dog mechanics and they said it was about time somebody came up with the system such as this one, rather than having to slide unit Out the frame rails and then back in my problem is I am going to have a tough time installing it from the bottom up due to the 3000 gallon water tank that’s mounted on the back of the truck. Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395763 Share on other sites More sharing options...
Rob Posted April 3, 2018 Share Posted April 3, 2018 Stengle Bros? Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395764 Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 That’s where I initially found it on the Internet, went down to my local spring shop and he brought it in through one of his suppliers. I crunched some numbers and He was very reasonable with his prices, by the time I ordered it and then had to run down to the border to pick it up,pay the duty, along with the exchange rate I thought it was a pretty good deal. I recently did the rear spring packs this time last year, it would’ve been a good time to change it out then...... Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395765 Share on other sites More sharing options...
macks in nigeria Posted April 3, 2018 Share Posted April 3, 2018 Welcome to the site.That is some good work you are doing on that truck,most of us would have gone for a decent used stand. Quote Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395766 Share on other sites More sharing options...
Rob Posted April 3, 2018 Share Posted April 3, 2018 Be a long time before you wear that one out as they are much heavier than the originals. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395767 Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 Thanks, I plan on running this truck for a long time, after talking to quite a few guys in the know it is a lot cheaper to fix this unit up rather than purchasing a new truck. Absolutely Rob, it’s almost over engineered, very heavy construction. I replaced the front leaf packs about eight months ago along with two new battery boxes, the covers on it right now are the old ones due to the amount of salt here in the winter. Going to be ordering up brand new air cleaner assembly and oil pan, along with a set of new main crank bearings. Slowly but surely....... Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395777 Share on other sites More sharing options...
theakerstwo Posted April 3, 2018 Share Posted April 3, 2018 I did one of those to my truck and i gained about 500lbs. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395785 Share on other sites More sharing options...
MACKS Posted April 3, 2018 Share Posted April 3, 2018 Why couldn't you just install new trunnion bar and bushings? Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395791 Share on other sites More sharing options...
Bud’s Posted April 3, 2018 Author Share Posted April 3, 2018 The old Mack dealership here used to do a trunnion bar a week,2 days to tear down and two days to reassemble. Which entailed cutting out the stand ears Which the bar passed through,Pressing them off, pressing on the new bar, welding them back place etc.... The one mechanic told me that replacement stand is the way to go My saddles are finished along with the bar having excessive wear. Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395808 Share on other sites More sharing options...
mackey58 Posted April 3, 2018 Share Posted April 3, 2018 Border was that made in Mexico. Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395813 Share on other sites More sharing options...
MACKS Posted April 3, 2018 Share Posted April 3, 2018 3 hours ago, Bud’s said: The old Mack dealership here used to do a trunnion bar a week,2 days to tear down and two days to reassemble. Which entailed cutting out the stand ears Which the bar passed through,Pressing them off, pressing on the new bar, welding them back place etc.... The one mechanic told me that replacement stand is the way to go My saddles are finished along with the bar having excessive wear. Ok got ya,I only worked on 58 rears where the bar is held on with trunnion caps..good luck. Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395817 Share on other sites More sharing options...
mackey58 Posted April 3, 2018 Share Posted April 3, 2018 Ya got your work cut out for you for sure Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395821 Share on other sites More sharing options...
terry Posted April 3, 2018 Share Posted April 3, 2018 Doesn't somebody make one of these stands that come in pieces to install easier? This one sure looks heavier duty than a stock one! terry Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395825 Share on other sites More sharing options...
Mack Technician Posted April 4, 2018 Share Posted April 4, 2018 (edited) Sweet Truck! Welcome to BMT. Did you consider just converting your worn brass stub over to neoprene and keeping your complete OEM stand? Edited April 4, 2018 by Mack Technician Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-395834 Share on other sites More sharing options...
2000CL713 Posted April 8, 2018 Share Posted April 8, 2018 are you replacing the spring packs?....... i did the same upgrade to my CL few years back. very nice piece. there was nothing wrong with mine at time but i wanted to do it before it took a shit. i replaced everything in the rear other then the rear ends themselves. my front end is still all factory original from 2000 and rides dead true. i can get 2 years out of a set of front floats with perfect wear. about once or twice a year i check the frontend for play or any wear parts and nothing. my truck has 600k on it now. Quote Link to comment https://www.bigmacktrucks.com/topic/52997-replacement-trunnion-stand/#findComment-396184 Share on other sites More sharing options...
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