funkyfullwidth Posted March 17, 2012 Share Posted March 17, 2012 while servicing a 2000 mack cl713 i found that both trunion covers were cracked. One of them cracked worse then the other with chunks missing. A few of us at the shop just thought it was from a rock or something. After I pulled off the covers I found that the nuts were loose. Is a routine adjustment of these necesarry? How do you check for wear, and/or how often is a camel back overhault necesary? Also, what's the purpose of the spring loaded screw that's on the cover?sorry for my ignorance, figured this'd be the best place to ask. Once i asked a guy at work what was behind the covers... He told me, "grease, just grease." Nice.... Quote Link to comment https://www.bigmacktrucks.com/topic/23907-cracked-trunion-cover/ Share on other sites More sharing options...
macattack Posted March 17, 2012 Share Posted March 17, 2012 check www.truckcomponentsonline.com they have diagrams . it will show you your model and whats inside. washers, adjust collars etc...hope this helps. Quote Link to comment https://www.bigmacktrucks.com/topic/23907-cracked-trunion-cover/#findComment-108045 Share on other sites More sharing options...
e9500v8 Posted March 18, 2012 Share Posted March 18, 2012 It is from your truck walking (axles are moving left and right opposite each other) your bushings are wore out it is cheapest to get a whole new saddles with new bushing in it and put her on. Make sure you get u bolts tight they are supposed to be 1800 ft/lbs! Quote Link to comment https://www.bigmacktrucks.com/topic/23907-cracked-trunion-cover/#findComment-108320 Share on other sites More sharing options...
funkyfullwidth Posted March 23, 2012 Author Share Posted March 23, 2012 Is it necessary to adjust these every now and again? And for adjustment do you have to remove the springs?thanks for the replies. Quote Link to comment https://www.bigmacktrucks.com/topic/23907-cracked-trunion-cover/#findComment-109531 Share on other sites More sharing options...
MACKTRUCKS4 Posted March 25, 2012 Share Posted March 25, 2012 You will have to rebuild your trunion, better know as rebushing. If they are moving that much to crack the covers, chances are the shaft may be worn also. I did a couple of mine over the years, not as bad as it sounds. The biggest problem is supporting the whole back of the truck to remove the shaft. There are companies out there that come to your shop to change the shaft if you have it ready which is what I did. I never had to adjust them until it was time to rebuild. You could however adjust them without removing the springs, but that will not help if the bushings are worn out. I know of the spring loaded screw but don"t know what it is for, never used it. Quote Live every day like it's your last, because one of these days, it will be. Link to comment https://www.bigmacktrucks.com/topic/23907-cracked-trunion-cover/#findComment-110011 Share on other sites More sharing options...
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