alan0043 Posted January 24, 2018 Report Share Posted January 24, 2018 Hi Everyone, How do I know what size brake drums that I have on the front of my truck without pulling off a front wheel ? I am looking at putting on Centramatic wheel balancers on the truck. The truck is a 2012 Volvo VNL630. The Centramatic application guide flow chart wants to know if the truck has 15" or 16.5" brake drums on the front. Thank you for any help, Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
DesertMiner Posted January 24, 2018 Report Share Posted January 24, 2018 Call the dealer with the last 6 numbers of your VIN and they can tell you everything about your truck. It's very hard for anybody to guess how you truck was spec'd when built. Link to comment Share on other sites More sharing options...
Pete Kildow Posted January 24, 2018 Report Share Posted January 24, 2018 Agree with DesertMiner, dealer can give you the right info. As it depends on what axles. How the truck was ordered, and that kind of stuff. Seen 3 trucks same Make, years and all three had different drum's. One had a big Engine and heavy haul spec's, then one had a big engine set up as a Tri-Axle, third was fleet unit. Also if your looking to do the brake job yourself. Check out Youtube, and watch the video on lifting the drum's with a dolly. No lifting and it does all the work for you. Link to comment Share on other sites More sharing options...
SuiteSuccess Posted January 24, 2018 Report Share Posted January 24, 2018 Al, Probably no help but my 12,500 lb front axle has 15x5 according to my build sheet. You might try ryan.sweetser@volvo.com with your vin. He’s the one that sent me my build sheet but that’s been 6 years ago. 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
Scrap Posted January 25, 2018 Report Share Posted January 25, 2018 They haven't put a 15" brake on a truck since 2011. So you are probably pretty safe with a 16.5. Eventually you look at enough of them you can tell by looking through the wheel holes! Link to comment Share on other sites More sharing options...
alan0043 Posted January 25, 2018 Author Report Share Posted January 25, 2018 18 hours ago, Pete Kildow said: Agree with DesertMiner, dealer can give you the right info. As it depends on what axles. How the truck was ordered, and that kind of stuff. Seen 3 trucks same Make, years and all three had different drum's. One had a big Engine and heavy haul spec's, then one had a big engine set up as a Tri-Axle, third was fleet unit. Also if your looking to do the brake job yourself. Check out Youtube, and watch the video on lifting the drum's with a dolly. No lifting and it does all the work for you. Hi Pete, Thank you for posting the video. Work smarter not harder. That is something I need to remember. Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
SuiteSuccess Posted January 25, 2018 Report Share Posted January 25, 2018 9 minutes ago, Scrap said: They haven't put a 15" brake on a truck since 2011. So you are probably pretty safe with a 16.5. Eventually you look at enough of them you can tell by looking through the wheel holes! Good info Scrap. My truck, just like me, has a bunch of obsolete parts, lol. 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
Scrap Posted January 25, 2018 Report Share Posted January 25, 2018 Yea.......my phone had a PrepH ad on the bottom of it for like a week because of you! Link to comment Share on other sites More sharing options...
Pete Kildow Posted January 25, 2018 Report Share Posted January 25, 2018 5 hours ago, Scrap said: Yea.......my phone had a PrepH ad on the bottom of it for like a week because of you! Now that is bad for sure. For the parts on mine its easy. Just tell them parts that fit the Maybud. Came in before the Mayflower. Link to comment Share on other sites More sharing options...
alan0043 Posted January 26, 2018 Author Report Share Posted January 26, 2018 23 hours ago, Scrap said: They haven't put a 15" brake on a truck since 2011. So you are probably pretty safe with a 16.5. Eventually you look at enough of them you can tell by looking through the wheel holes! Hi Scrap, I was able to look thru the holes in the wheels and find this on the drum. 16.620 MAX. It sure looks like the truck has 16.5". I know I should check out the serial number. Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
alan0043 Posted January 27, 2018 Author Report Share Posted January 27, 2018 On 1/26/2018 at 9:14 AM, alan0043 said: Hi Scrap, I was able to look thru the holes in the wheels and find this on the drum. 16.620 MAX. It sure looks like the truck has 16.5". I know I should check out the serial number. Al Hi Everyone, Here is a little update. I stopped by the local Volvo dealer and had the serial number checked out. The brakes are 16.5" x 6". I asked the guys behind the parts counter which year the brakes changed but they don't remember which year the trucks had a change in brake size. Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
Scrap Posted January 27, 2018 Report Share Posted January 27, 2018 August 2011 for 6x4 tractor and August 2013 for everybody else. Had to take 105ft out of the stopping distance. Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted January 27, 2018 Report Share Posted January 27, 2018 Will the larger drum fit on an older truck say a1998 vintage? And will the rest of the brake assembly work as well? Alie & Jim + 8 paws 2017 DRV Memphis BART- 1998 Volvo 610 Lil'ole 6cyl Cummins Link to comment Share on other sites More sharing options...
Scrap Posted January 27, 2018 Report Share Posted January 27, 2018 A 16.5x5 will bolt on and work. A 16.5x6 true RSD (reduced stopping distance) truck setup won't work without a knuckle change. They had to beef up the spider bolts and re-arrange the ABS sensor location. That's with a E1200i axle though. The unit bearing Meritors that some of you Volvo guys got I have no idea on. The 8 bolt wheels some of you have I'm not sure if the valve stem would clear the large drum either - it would need to be checked out. Quite a few 16.5x5's run type 30 chambers that would need a front brake plumbing change to remove the QR valve and install a relay valve as well. I'm not sure I'd upfit a 4x2 without 40/60 or 50/50 range weight distribution either. It could be a wild ride! Link to comment Share on other sites More sharing options...
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