gmbelt

As always, your advice, help and guidance are invaluable.

Many thanks my friend,

Gary

My 1962 B-85F semi-open cab pumper with a Mack Thermodyne ENF-707C gasoline engine is need of a major tune-up. My mechanic tells me that it could use new plugs, plug wires, points, condensors, maybe new distributor caps, etc. He also said I would need to find a "dual" timing light because of the dual ignition on the engine. He also noted that one of the distributor caps was sitting on top of a device a little bit larger than a soda can; no idea what it is.

In any event, I'm looking for a source for these parts and would greatly appreciate some advice as to where to turn. I can provide any photographs that might help. I have the maintenance manual for the truck which was sent to me by the Mack Museum.

Many thanks in advance for your help.

Gary M. Belt

Manassas, VA

As always, many thanks.

Gary

Gary,

The center shaft is about 5/8" in Diamater, the 1503 has a rubber center gasket so it slides down on the center shaft a little tighter than the original but fits nicely on the 1960 707 engine. I also use the same 1503 on the 1954 464 Mack engine. Make sure the mechanic knows that the filter doesn't just drop on the shaft,it does need to be pushed (lightly down) to get the rubber to slide over the center shaft.

The original Napa 1237 was .625" ID, 4.5" OD 8.25"H

The new Napa 1503 is .567" ID 4.092" OD 8.039" H

The difference is about 1/16" on the ID and the rubber gasket expands to allow the center shaft to slide on.

Firemack

Firemack:

According to my mechanic, the NAPA 1503 oil filter I purchased for my Mack 707C engine won't fit. The mechanic tells me it is too small and the Napa 1503 won't slide up on the "shaft" because the center hole in the filter is too small. I know the NAPA 1503 is about 1/2" smaller in OD, but how do I get it to go on the shaft?

Many thanks,

Gary

Manassas, VA

Gary,

I called Shell and spoke to a Shell Rotella engineer and Shell recommends a straight weight oil as that was best for motors that were designed for the that type of oil. I just ordered Rotella SAE 40 from my Napa dealer. They don't stock straight SAE 40 anymore so you you need to order it, takes about 2 days. I order 6 gallons. The 707 takes about 18 quarts (4 1/2 gallons), but make sure to drain, refill and check the dipstick after the oil change to make sure you have the right amount in crankcase. I use the Napa 1503 to replace the Napa 1237, it is about 1/2" in OD smaller but does not effect the operation.

Firemack

As always, many thanks for your help.

Gary

Firemack:

You recently advised that Shell Rotella T SAE 40W oil would be a good choice for my Mack 707C gasoline engine. I note that Shell has this in 5W-40W and 15W-40W; which should I buy and how many quarts does the 707C need?

Also, I read the old posts from last fall about the issue of oil filters for the 707C. Was that ever resolve as to what would work as a replacement? Barry's shop advised me a couple of weeks ago that the Mack 236GB222 oil filter crosses with FRAM C147, BALDWIN C36M, and NAPA 1237; none of these appear to be made any longer. They also crossed it to the WIX 51503 which, in turn, crosses to the NAPA 1503.

Your help or any elses on both issues would be greatly appreciated.

Thanks,

Gary M. Belt

Manassas, VA

I have been told that the exhaust manifold from a 673 diesel, 170hp, will work on my 1962 Mack B-85F fire truck with a 707C gasoline engine. The source of this information said that he had a cracked exhaust manifold on his 1961 Mack B-70 tractor with a 707C and the 673 diesel, 170hp, exhaust manifold worked fine since the engine blocks are almost identical. He said the 673 diesel exhaust manifold is easier to find.

Any thoughts or experience you folks have in this regard would be greatly appreciated. Is the 673 the END673 and if so, does anyone know the letter for the 170hp, i.e., A, B, etc.

Thanks again,

Gary M. Belt

Manassas, VA

I have been told that the exhaust manifold from a 673 diesel, 170hp, will work on my 1962 Mack B-85F fire truck with a 707C gasoline engine. The source of this information said that he had a cracked exhaust manifold on his 1961 Mack B-70 tractor with a 707C and the 673 diesel, 170hp, exhaust manifold worked fine since the engine blocks are almost identical. He said the 673 diesel exhaust manifold is easier to find.

Any thoughts or experience you folks have in this regard would be greatly appreciated. Is the 673 the END673 and if so, does anyone know the letter for the 170hp, i.e., A, B, etc.

Thanks again,

Gary M. Belt

Manassas, VA

I forgot to ask earlier: Did that truck belong to the Bureau County Fire Dept. in Illinois? They have a very nice B model tanker that they still run and it is only about 70 miles from me.

Rob

Rob:

This 1962 Mack (with a 1,500 gallon tank) hails from the Eastwood Fire Protection Bureau in Carter County Missouri.

Gary

Gary

The B75 had a 464 or 510 engine and 750GPM pump, (and there were only 54 built). The B85 had the 707 engine and 750GPM pump. so to confirm you should check the right frame rail above the front axle to see the serial number which is stamped in the frame and should be able to confirm if the serial number starts with B75 or B85. If it was a B75 someone swapped the engine or a B85 and someone swapped the emblems.

Firemack

I'll check the frame rail the first chance I get. Any suggestions on locating an exhaust manifold.

Gary

I have a 1962 Mack fire truck; the Mack manufacturers plate by the pump panel says Model: B85F. However, if you look at the attached photos, you will see on the hood the emblem that says "B75". The photo of the other side of the hood shows the emblem missing, but you can see the outline of when the emblem was there and it also says "B75". Is this just a case of someone using the emblems available at the time? I also included a photo of the entire truck.

Also, the mechanic tells me that I need to replace the exhaust manifold which has several cracks in it. The engine is a Mack 707 and any help as to where I can start looking and the likely cost would be appreciated.

Many Thanks,

Gary M. Belt

Manassas, VA

Gary,

Shell Rotella T SAE 40w would be a good choice for the 707 gas engine. You need to post pictures for the other parts you need so we can see what you have, most of the trucks have different types of air cleaners etc. based on the options.

Firemack

First, thanks ever so much for your help. I'm not mechanically inclined, so please pardon my ignorance as to what is probably basic stuff to most of you folks. For instance, the Shell Rotella T SAE 40w oil, is there anything that needs to go in front of the "40w", i.e., 10w, 20 w, etc?

Secondly, I've done some searching through the posts on BMT and it appears that oil filters for the 707 gas engines are almost non-existent. Any help on where they can be found or a suitable replacement would be most welcome.

I've tried to attach some photos of the carbruetor and air breather in my 1966 C-95 Mack with the 707 gas engine. I also included a photo of the piece of black steel pipe with a bend that appears to connect to the short piece of steel pipe coming off the carbruetor. It doesn't seem to line up just right and I guess the end of the pipe with a bend is supposed to connect to the flexible tubing (with the wires hanging out) and then to the right opening of the air breather. Any help in finding replacements or lining this up correctly would be a big help.

I have also included a two photos of the "cap" on the wheel of my 1962 Mack B-85F. The cap screws on the wheel and I'm looking for a replacement.

Many thanks for your help.

Gary

Manassas, VA

I just acquired a 1962 Mack B-85F open cab pumper that has what I believe is a Mack ENF-707 gasoline engine. What type/grade of oil should I use in this engine? Also, I'm looking for a "cap" that looks like half of an oil filter or a bullet that screws on over the area of the exterior wheel where I think the bearings are located.

The 1966 Mack C-95 open cab pumper I have needs the hose/plastic pipe the goes from the carburetor to the air breather that looks almost as big as a five gallon bucket.

As always, your help is appreciated.

Regards,

Gary M. Belt

Manassas, VA

Gary,

There are still rebuild kits available (I got mine from Barry at Watts mack) (you need to provide the carb model number) and also speciality carburator shops- I needed some extra work on my carb and sent it to Classic Carb in Phoeniz AZ.

For contact info see the old parts list http://www.bigmacktrucks.com/MusicVid/part...ierslisting.pdf

They rebuilt and bench tested the carb and it runs better now than when it was new.

Firemack

Many thanks for your help.

Gary

Looking for a good source of parts for a 1966 Mack C-95 pumper (open cab). Specifically looking for a rebuilt carb. for Mack ENF707C gas engine (as well as other possible engine parts). Also looking for new steering wheel before the current one comes off in my hands.

As always, I greatly appreciate the help I receive from this group. I am a novice (non-mechanical person) and your assistance is invaluable.

Many thanks,

Gary M. Belt

Manassas, VA

First thing that you need to check is your timing. Make sure that it is advancing as RPM's increase. There are springs inside under the cap that control the advance rate. Next thing to consider is that the carb is probably due for a rebuild. It sounds like your accelerator pump in the carb isn't working right. It is there to give a "boost" of fuel when you hit the throttle. The popping noise would be present with or without the hose in place. It would probably just be muffled. Don't run without your air-cleaner hooked up! My truck makes a popping noise when it is cold and I try to take off. After she warms up it is fine. I run my carb a bit on the rich side cause I don't want a possible lean condition. Your carb may be running ''fat" and causing some of that. Check the easy things first, timing, then look into the springs, then go after the carb.

Many thanks for your help. Singer Associates (premier fire apparatus repair facility in Manassas, VA) did some work on the truck to get it running, but I don't think 33 year old gas fire truck engines is theri fortay. They service most of the fire departments in the Northern Virginia area and they are all front line (diesel) pieces. Any suggetions as to where I might turn to find someone who could work on the engine correctly? I'm a fire truck buff (I have two Mack's), but I don't know a spark plug from a lug nut.

Thanks again,

Gary

Manassas, VA

I have a 1966 Mack C-95 semi-open cab pumper with a Mack ENF707C gas engine and Zenith 29D-series carburetor. When shifting through the gears and accelerating, there is a loud popping sound almost like a "back-fire" that we have isolated as coming from the area of the carburetor in the engine compartment. The air breather hose is not presently connected to the carburetor (new one on order) and I'm wondering if this could be the cause of the popping sound. If not, is their an engine or carburetor adjustment I should be looking to make? Where else might I look?

Many thanks in advance for your help.

Gary M. Belt

Manassas, VA

Gary,

The grab handles and railings are Mack specific, and not easy to find. You may be able to find stainless steel tubing to replace the railing, but the fittings are Mack. If you are open to a non original look you can go to tow truck accesories web-sites that have grab handles and can use them but will not be the same Mack Fire truck look. I looked around and finally had mine rechromed.

The door handles are from a company called Eberhard, they are still in business and may be able to replace the handles you have.

Firemack

Thanks for your help; I'll look them up.

Gary M. Belt

Manassas, VA

Many thanks for your help; I'll look forward to hearing from you.

Gary M. Belt

Manassas, VA

Looking for a source to purchase grab handles, railings and recessed latches for compartment doors on a 1966 Mack C-95 open cab pumper. The existing handles, etc., are chrome and in a rusted/pitted state. I know I can likely have these parts re-chromed, but it may be cheaper to look for new items.

Regards,

Gary M. Belt

Manassas, VA

Looking for transmission parts for a Mack TRXL107 5 speed manual transmission installed (new in 1982) in a 1964 Mack C-95 fire truck. Any help as to where parts might be available would be most appreciated.

Many Thanks

Gary M. Belt

Manassas, VA

Looking for transmission parts for a Mack TRXL107 5 speed manual that was installed in a 1964 Mack C-95 pumper. Any help as to where parts might be available would most appreciated.

Gary M. Belt

Manassas, VA

Thanks for your help.

Gary

Gary,

Check with Napa, they still had one available for our B75 gas about 4 years ago.

Firemack

Looking for a replacement thermostat for a 1966 Mack C-95 open cab pumper (former Goodwill Hose Co., #3, Bristol, PA) being restored. The engine is a Mack gasoline Thermodyne ENF 707C. Any help would be greatly appreciated.

Regards,

Gary M. Belt

Manassas, VA

When taken out of service in 1990 this truck went from thier firehouse to my firehouse and was stored inside untill 2002. We would run it occasionally to move it from one side of the station to the other. What are your plans with it, are you going to letter is back up for Bristol once you repaint it?

I was hoping to get in contact with the folks at Goodwill Hose Co. #3 about any information/photographs they may have available regarding the truck. I would like to reletter the truck with the same Goodwill/Britol, PA,/Bucks County lettering when it is painted. Since you had the rig from 1990 until 2002, I would welcome a chance to talk or correspond with you about what you know concerning the truck and your staton's part in its history. My personal e-mail is gmbelt@comcast.net or please feel free to call me at 703-919-8537.

Regards,

Gary M. Belt

Manassas, VA