Copenhagen_Cowboy Posted October 14, 2016 Share Posted October 14, 2016 I just picked up a 1989 Mack r model from an auction and I am going to try and get it back on the road. Where can I find parts for these trucks. Im in Texas and I need interior switches. Can anyone point me in the right direction? Also can anyone tell me from the picture of the vin if r611 is the model number? Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/ Share on other sites More sharing options...
gearhead204 Posted October 14, 2016 Share Posted October 14, 2016 most all interior switches are still available with out issue ,the battery box covers should also be available in steel or alum. and the r611s should be the model # Look for your local Mack/Volvo dealer or call Watts the sponsor for this site. Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348749 Share on other sites More sharing options...
Maddog13407 Posted October 15, 2016 Share Posted October 15, 2016 thought they did away with the 611 and 609 and 607 by the time that truck came out, it looks ike a late 70's early 80's truck. should be a 685 by then 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348770 Share on other sites More sharing options...
j hancock Posted October 15, 2016 Share Posted October 15, 2016 R611ST is the model number. Born as a tandem tractor (ST) with probably the 260 HP Thermodyne engine. Last year for the R611 was 1988. Looks like it will clean up pretty well. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348789 Share on other sites More sharing options...
Copenhagen_Cowboy Posted October 15, 2016 Author Share Posted October 15, 2016 Sorry I put the wrong year. It is a 1980. I am having problems getting any of the lights to work on the truck and I am not sure where to start looking for the problem Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348803 Share on other sites More sharing options...
57 bcr Posted October 15, 2016 Share Posted October 15, 2016 I would start at the bus bar on the firewall (under the hood,below the drivers windshield). The terminals get a little crusty when the vehicle is unused for any length of time. Get out your test light and start poking around on the terminals. A good cleaning(small wire brush - WITH THE POWER DISONNECTED!)and then reconnect the terminals,will often be the culprit. If not,the cleaning should be done anyway and won't be chalked up as wasted time. I know of one fleet locally that would spray the bus bars of brand new trucks with non-metallic high-tac gasket spray as a protectant to prevent future corrosion. The same should be done with the terminal strips on each side of the grille opening that provide power to the lights. If you don't have the schematic handy,do one terminal at a time so you don't end up with mismatched wiring. Good luck,and let us know if it worked for you. Truck looks good just needs a little TLC & you'll be fine. Al 1 Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348808 Share on other sites More sharing options...
Copenhagen_Cowboy Posted October 15, 2016 Author Share Posted October 15, 2016 Thank you I will try that Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348810 Share on other sites More sharing options...
fxfymn Posted October 16, 2016 Share Posted October 16, 2016 Not to be too obvious, but have you checked the fuses? If none of the lights work I'd also check to make sure you have a good ground by checking continuity to the frame from the body. 1 Quote Money, sex, and fire; everybody thinks everyone else is getting more than they are! Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348877 Share on other sites More sharing options...
mowerman Posted October 16, 2016 Share Posted October 16, 2016 truck looks pretty good have a ball with it and welcome aboard...bob Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348905 Share on other sites More sharing options...
thomastractorsvc Posted October 17, 2016 Share Posted October 17, 2016 Where are you in Texas? Local Mack, Watts get an account with PAI Industries so you can look up parts don't forget ebay and other online venders. I use a local parts distributor for PAI I pay by credit card and they drop ship to my house usally 1 to 2 days depending what time it is Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-348959 Share on other sites More sharing options...
Copenhagen_Cowboy Posted July 20, 2017 Author Share Posted July 20, 2017 I am in San Antonio Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-375347 Share on other sites More sharing options...
Copenhagen_Cowboy Posted July 20, 2017 Author Share Posted July 20, 2017 Also wondering if anyone knows how to adjust the clutch on these trucks. It has a 13 speed. Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-375348 Share on other sites More sharing options...
mackey58 Posted July 20, 2017 Share Posted July 20, 2017 Contact the mack muesum with the model and Vin to get the wiring diagrams I got one for the 90 RD690 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-375380 Share on other sites More sharing options...
Susan Posted January 24, 2023 Share Posted January 24, 2023 Can you please tell me where you found the VIN stamped on your 1980 R Model Mack Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-523686 Share on other sites More sharing options...
67RModel Posted January 24, 2023 Share Posted January 24, 2023 Its on the passenger side outside surface of the frame rail behind the wheel/tire. A wire brush or wire wheel on a cordless drill really helps to make it legible one you locate it. Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-523689 Share on other sites More sharing options...
mowerman Posted January 24, 2023 Share Posted January 24, 2023 That’s where mine is on my 66 didn’t realize an 80 they were still putting it there … Bob Quote Link to comment https://www.bigmacktrucks.com/topic/47254-newbie-with-1980-mack-r-model-dump-truck/#findComment-523692 Share on other sites More sharing options...
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