dover

Where can I find the engine data plate?

Ben

WAAHOO, its home. I ended up only paying $2000 in the end for the truck and trailer. Once I had it here I started looking the engine over and it appears I have a NTC 335. The tag on the pump says NTC 335 and I looked a few up on the net and they look like mine. Did the 73 come with 335's from the factory, or did someone swap it in? The 335 is the 855 cu in block correct? Any opinions on this engine, strengths and weaknesses? It also appears that these engines must have unit injectors? I have only been around newer Cummins, nothing this old.

Thank you all,

Ben (The newest B series owner)

I ended up getting the trailer home the other day. I knew the trailer was going to be rough, but it took way longer than I thought. I think I am going after the truck in the morning. As to the starting issue, I pulled the starter and took it to a local auto electric guy, and it spun like a champ. I must of had a bad connection when I was hooking straight to the batteries. I can't wait to get it home and start procrastinating!!!

P.S. Does anyone here know much about the 262 Cummins?

Ben

Hello all,

I just bought a 1962 B733 that I have been told has a 262 Cummins. The dipstick in it is showing no oil three months after adding some oil and not seeing any visible oil spots under it. The dipstick tube in in two pieces and I dont trust it to be correct. Can anyone tell me how far below the dipstick port on the pan the oil level should be? I looked at this truck about 6 or 7 years ago and started it with no problems. I don't remeber if the oil was showing on the dipstick at the time. Thank you in advance for your help.

Ben

Well I have an update. I finally found the serial number on the frame and it matches the door tag, it a B-73. I'm trying to pick them up and haul them home tomorrow if the weather cooperates and my borrowed lowboy doesn't find a job. Hopefully I'll have another update tomorrow. Thank you all for your help.

Ben

Is this the diagram you are after?

Ben

I think I have what you are after. Give me a few to dig it up and scan it.

Ben

Not nitpickin, just trying to understand the electrical. I want to get the thing started again and it is being difficult. It does have a series parallel switch, which combined with not knowing the polarity is screwing with me in understanding how to jump this thing. It does not have any batteries still hooked up. I am just a whipper snapper and wasn’t quite born when the '77 F model above was rolled off the line and have never been around a negative ground. Do I just hook the negative lead to the post on the starter solenoid and positive to the case(Minus all the leads to and from the SP switch for simplicity)? If I am attaching a battery charger, I still hook up the positive to positive correct? Sorry for the dumb questions, I just want to make sure I understand. I have the cash on hand and am thinking of keeping the trailer around for now. I have a late 50's Cat 14 motor grader that would look nice parked next to an old Mack and "vintage" belly dump. As for the sound, from what I can remember it sounded pretty sweet even though there is a big ugly muffler on the stack. It has a Jake that worked well enough to kill the engine. Thank you all for your advice and encouragement.

Ben

I thought the price wasn't to bad, but wanted to check. I went by today again to start it, and same thing as the last time. It would spin very very slow and every thing got hot. Do any of you know when they switched to a negative ground? Is there an easy way to tell if the batteries are long gone. The only place on the frame that is covered in baked on grease is from the top of the front axle to about two feet behind it. Can anyone give me a more precise location for the vin to check against the door tag?

Thank you all for help, hopefully I will soon have my first Mack!

Ben

Hello all

I think this is my first post here after brousing for the last few years. I tried to buy this truck about six years ago but didn't have the funds. I would like to get a little information on this truck if anyone can help me out. The hood has a B77 emblem on it, but the door tag says B733 S 1712. I started the truck when I first looked at it and it sounded good. It has only been started once or twice since then. Would this truck be a possitive or negative ground? I believe he said it was a 1965 model. It will not build air due to what he called a dime valve in the compressor. Are these a common problem and does this sound like it could be the issue? The guy is asking $3000 for the truck and a stone age belly dump that is in rough shape. Do you think that this is in the correct ball park? Sorry for the rambling, any help would be greatly appreciated.

Thank you,

Ben