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    1. Introduction Forum

      Welcome to the New BigMackTrucks.com Forums! Take a minute to create a new post here and introduce yourself. Tell us a little about yourself and your passion for old iron!

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    2. Truck Stories

      This is a forum for you to tell us about your truck's history! Every old truck has some type of story behind it and we would love to hear about it! Be sure to include photos if possible...

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  2. General Discussions

    1. Antique and Classic Mack Trucks General Discussion

      This is where you can talk about anything related to antique or classic trucks! If your topic is something specific, try to use the correct forum below.

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    2. Modern Mack Truck General Discussion

      This forum is for general discussions about modern Mack Trucks! Granite, Vision, Rawhide, Pinnacle...etc. Specific topics can be posted in the forums below.

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    3. Mack Dealer & Corporate Forum

      This forum is for Mack Dealers and Mack Corporate personnel only. If you are a Mack Dealer, or Mack Employee, PM the forum moderator below with your name and dealer code and you will be moved to the Dealer Group and be able to participate in this forum.

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    4. Mack Truck Q & A

      This forum is for pressing questions concerning Mack Trucks...emergency maintenance questions, pre-purchase questions, etc...answers can be rated by users and the higest rated answers will show first!

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    5. Mack on the Silver Screen

      This forum is for discussing various TV shows, commercials, music videos, songs and movies that had Mack Trucks in them!

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    6. Mack Scale Model and Diecast Corner

      All discussions about Mack scale model building and diecast models go here!

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  3. Specific Topic Forums for Antique & Modern Trucks

    1. Engine and Transmission

      This forum is for engine and transmission related topics

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    2. Driveline and Suspension

      This forum is for driveline, carrier, front and rear axle, steering and suspension topics

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    3. Air Systems and Brakes

      This forum is for Air System and Brake related topics

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    4. Electrical, Electronics and Lighting

      This forum is for electrical, lighting and mobile electronics topics

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    5. Exterior, Cab, Accessories and Detailing

      This forum is for topics about exterior, cab, paint, trim, bumpers, emblems, visors and also topics about keeping that truck looking its best!

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    6. Fire Apparatus

      Forum for discussions about Fire trucks and specialized fire fighting equipment.

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  4. Odds and Ends

    1. Odds and Ends

      This forum is for non-truck related topics. Talk about interesting web sites, current events, tell jokes, post funny photos...etc.

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    2. Trucking News

      News and information from the entire trucking industry

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    3. Other Truck Makes

      This is the place to show off all your other trucks that are not Macks. They can be antique or modern trucks.

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    4. Tractors and Equipment

      This forum is for you to talk about Farm Tractors and other misc. equipment such as trailers, dozers etc.

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  5. Market Place

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    3. Feedback Forum

      Please leave feedback for other members you have done business with here. This will help members trust (or not trust) other members. Please be professional with your remarks...good or bad.

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    4. Transportation Board

      This forum is for posting and finding transportation opportunities for your antique hobby trucks and parts around the country. Please keep rates reasonable when posting a route...

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    5. Watt's Truck Center   (185,739 visits to this link)

      Click here to visit the Watt's Truck Center Home Page featuring The B-Model Store and tons of other parts for Antique and Classic Mack Trucks including R-Models, Super-Liners, DM's and all current models!

    6. Product Announcements & Group Buys

      This is the forum where we will post new product announcements and Group Buy Information from the B-Model Store! You can discuss them and/or ask any questions you may have here.

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  6. Shows and Events

    1. Truck Shows and Events

      This forum is for topics about truck shows and other events of interest.

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  7. Site Related

    1. Site Related Topics

      This forum is for BMT related comments, suggestions or problems.

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    2. BMT Wiki Support Topics

      This forum will hold the support topics created from the Wiki System.

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    3. Test Forum

      This is the place to practice posting photos or testing code. Topics may be removed at any time...

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  • Latest Posts

    • We got our truck with 415k miles, so no idea how it was from factory, but this is how it was routed when we bought it. "Push" function first T's into the passenger cab mount latch, then splits to go to tilt ram and the driver cab mount latch. "Pull" function just goes to retract the tilt ram.  When the cab comes over center and starts coming down on its own weight it creates enough pressure on the "push" circuit to force the latches back open. Once the cab is seated, the springs on the latches hook the cab to keep it locked down. I assume your truck is the same way, but yours is 24 years older than mine. Not sure how the "push" circuit creates the resistance during "pull" function to open the latches, there may be a small orifice the oil has to pass through in order to return to the pump. Not sure why you're having the problem you're having! Something must be acting as a check valve somewhere, or the cylinder is binding!
    • You can adjust the sending unit. If it reads too low, bend the arm down a little, too high,, bend the arm up a little, put it back in and check it.  It's important to make sure the sender is clocked right. So match mark it before removal
    • They're polished aluminum wheels, old Alcoa wheels. I was finally able to find studs that are the right length for them. The BWP studs seem to be the longest, because they don't have the really large chamfer on the lug nut end (which makes the thread length a little too short) that some of the other brand studs do. So it looks like I'm good now. Thanks for the help. I was able to get new window kits for the vintage Stemco caps on the truck. The 5999 ones fit (2 3/4"), and all of the screws came out ok. I guess mine were completely painted over at some point to make it easier to see the oil level in them, but it seemed to make it harder     
    • I think Mechohaulic is on the right path here. I believe it is a "Variable Resistance Ground" system. The better the Ground, the higher the gauge reads. I am assuming the truck has a separate gauge that is not part of a instrument panel with a circuit board. I am not familiar with Superliners. Would love to have one someday though. I had similar problems on my "93 CH613. This is what I did to troubleshoot the system. It sounds like you did a continuity test on the wiring from the gauge to the sending unit. If you have "0" Ohms resistance, the wiring is good. The gauge likely has three pins on it. Power, Ground, and Signal. The Signal pin would be the  wire returning from the sending unit. To test the gauge, remove the gauge from the dash and connect 12v to the Power pin and ground to the Ground pin. Then momentarily jumper the Signal pin to the Ground pin and the gauge should read Full. If not, you likely have a bad gauge. To test the gauge and wiring, reconnect the gauge and disconnect the plug from the sending unit and momentarily connect a jumper across the two pins, the gauge should read full.  This means the wiring and gauge is good. To test the sending unit, reconnect the plug and physically move the float up and down, the gauge should respond accordingly. I removed the sending unit from the tank, it was easier for me to work on it. If all of those check out and it doesn't read correctly, I suspect there may be a mismatch between the sending unit and the gauge. My fuel gauge only reads to 5/8 full on a full tank. Sending unit from Mack and Fuel Gauge from PAI. I suspect there is a mismatch or calibration issue going on. I was lucky enough to get a complete wiring diagram from my local Mack dealer, it was very useful in tracking all of this down in the truck.  Hope this helps and Good Luck. The truck looks awesome!!        
    • Mixer mounted up, need to tighten mounting bolts and hook electrical plugs, hydraulic pump, water tank rebuild the mixing auger for the back... (worn from use, not collision) I'm also chasing an ABS code that is bugging me. Right steer abs cable ripped so I put a new sensor in, but still have a code. Gotta get this truck ready for inspection!
    • i completely forgot i was driving one of these back in the  back in the 70s part time hauling crushed cars from beverly auto wrecking to some iron yard,,too long ago to remember,,but i do remember i thought it was a pretty cool ride,,,straight flat bed...bob
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    • Sunny Gill

      Second Hand Mini-Tractors in India
      Mini tractors have gained immense popularity in India, mainly due to the country's small-scale land holdings. At TractorKarvan, we boast an impressive collection of over 10 pre-owned mini tractors available for purchase. The Mini tractor second hand price is a very affordable and top-notch model from leading manufacturers, including Eicher, Swaraj, Massey Ferguson, Mahindra, and Sonalika, among others. Before deciding to invest in a used Mini Tractor, it's crucial to conduct a thorough assessment of the model to ensure it aligns with the specific tasks you intend to undertake. Known for their robust engines and durable build, tractors are renowned for their longevity. It's advisable to meticulously examine the tractor, checking the brakes, transmission, engine, and all other mechanical components. A well-maintained and regularly serviced used tractor is likely to outlast other
      Brands. If you're considering the purchase of a Second Hand Tractor, we invite you to explore the comprehensive range available on the TractorKarvan website. With our diverse selection of over 10 old mini tractors for sale, we aim to cater to your specific agricultural needs and preferences. 
       

      · 0 replies
    • 1961H67  »  LuceExcavation

      Very Nice! You just can’t have too many Superliners! 
      · 0 replies
    • Joe Spaniak

      hi everyone   just bought a 1983 mack cab over mh600 to restore  i never restored a truck before any advice
      on where to start  i really want to make it a nice looking truck to drive not a show truck
      · 0 replies
    • Steerefarm

      Hello Everyone! My name is Buster and I am from Rhode Island . Been running Macks for 52 yrs starting with a B60T tractor and B81 Ten Wheel Dump as a kid ,  and they have been good to me... we run 2 RD688S Dumps , a 2010 CHU Tractor ,an RW713 tractor recently acquired, and a 90 RW713 project tractor we are in the process of building ..Thanks for welcoming me as a member  
      · 0 replies
    • wishiknu  »  Barry

      Good morning. I am new to this site. I have absolutely no idea where to post a question about our truck. I was hoping you could help me. Or tell me who can help me.  
      · 0 replies
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