Mack1984 Posted June 16, 2021 Share Posted June 16, 2021 I have a 1969 Mack rl700 with 13 speed Eaton fuller. The transmission mount broke. I have the casting number. It’s 11QL4470. It looks like a cast aluminum piece. Looking for at least one. Any help would be greatly appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/ Share on other sites More sharing options...
alex g Posted June 17, 2021 Share Posted June 17, 2021 I might have some but I don't think there aluminum. They'd be for a 80s R model. I won't be home til Sunday if I forget to look pm me Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475324 Share on other sites More sharing options...
Maddog13407 Posted June 17, 2021 Share Posted June 17, 2021 pretty sure i have a pair in Ny. would have to dig them out Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475328 Share on other sites More sharing options...
terry Posted June 17, 2021 Share Posted June 17, 2021 10 hours ago, alex g said: I might have some but I don't think there aluminum. They'd be for a 80s R model. I won't be home til Sunday if I forget to look pm me I would bet a R model mount is different from a RL mount. terry Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475341 Share on other sites More sharing options...
Rob Posted June 17, 2021 Share Posted June 17, 2021 13 minutes ago, terry said: I would bet a R model mount is different from a RL mount. terry The offsets differ for the frame splay on the standard R series. I have both types of trucks meaning an RL700 with a 13 speed Fuller, and R612 with the same transmission. 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/67028-69-rl700-transmission-mount/#findComment-475342 Share on other sites More sharing options...
terry Posted June 17, 2021 Share Posted June 17, 2021 12 hours ago, Rob said: The offsets differ for the frame splay on the standard R series. I have both types of trucks meaning an RL700 with a 13 speed Fuller, and R612 with the same transmission. The RL is a straight frame, where the R model spreads out around the engine. right? terry 1 Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475391 Share on other sites More sharing options...
Rob Posted June 18, 2021 Share Posted June 18, 2021 The RL series utilized aluminum frame rails which were straight front to rear. The standard R series used steel frame rails which "splayed", or widened starting about centerline of the fuel tanks forward. The transmission, or rear engine mounts affix to the frame rails in this area and are slightly angled in the R series but straight or flat in the RL series. The RS series is just as the RL series except steel frame rails. 2 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/67028-69-rl700-transmission-mount/#findComment-475398 Share on other sites More sharing options...
alex g Posted June 19, 2021 Share Posted June 19, 2021 On 6/17/2021 at 6:50 AM, terry said: I would bet a R model mount is different from a RL mount. terry I kinda wondered when he said they were aluminum Quote Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475451 Share on other sites More sharing options...
Vladislav Posted June 20, 2021 Share Posted June 20, 2021 On 6/19/2021 at 9:31 PM, alex g said: I kinda wondered when he said they were aluminum Seems making sence for a RL. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/67028-69-rl700-transmission-mount/#findComment-475547 Share on other sites More sharing options...
Rob Posted June 20, 2021 Share Posted June 20, 2021 I have seen aluminum mounts on both the frame side, and transmission side. Usually with an older truck one, or the other is broken as the isolator bushings were not kept in good order and aluminum won't withstand the "hammering" these will take. 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/67028-69-rl700-transmission-mount/#findComment-475549 Share on other sites More sharing options...
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