Firemack

Big Mack Air Brake Experts- I am helping out a friend that has a 1960 Mack B95 Fire Truck with Air Brakes. This truck is holding air pressure when applying the brakes, but I can hear air escaping- so I am looking to find the leak and repair it. My first item to check is the rear chambers- and looking to get parts- they are not readily available as they are the old RotoChamber style. The new style chambers are available but need to add a valve and piping to make them release. I checked with Bendix and downloaded the latest manual- it has diagrams for the new braking systems but nothing on a conversion. I seem to remember a good reference on ATHS ro ATCA but cannot find it on their site any longer. I wanted to know if anyone has already done the conversion and has a list of parts needed to convert this to Maxi Chamber (with air parking brakes). I am planning on replacing all of the rubber air lines and chambers as well during the conversion so he can be sure the truck will stop and not have to worry about blowing a line (or diaphram) going down the road. Thanks, Firemack

The clutch adjustment is based on a distance measurement from the edge of the seat- I think on the B model it is 23" and has about 2" of freeplay. Do you have the drivers manual for the C Model? It will show the actual measurements- if not- I can give the measurements for the B model, and see if that will work. The actual adjustment for the clutch freeplay is on the clutch shaft that has a locked nut on the threaded adjustment bolt- adjust only a few turns and then try it out. If it is far out of adjustment you can also remove the adjustment mechanism and change the position on the splined shaft to then give you the proper amount of adjustment. Firemack

I got mine from Barry at Watts mack -they were still available- the same as the engine and trans isolators. Firemack

Speed, I had the shoes relined- I think it cost about $80- it was about 5 years ago so may be a little more, I used Transaxle for the reline. They are national so should have shops near you. If not I used the shop in Bridgeport PA- just so you can check prices- and you may find some one local to you that can reline them. As for the wheel cylinders- they are either $50 a piece rebuilt or $80 if they are larger- on the B model they were $80 each. The Master was $150. I was going to buy a new one but the warranty is only 1 year at Napa- for about the same price I sent it to White Post and now it is guaranteed for life- they use brass sleeves so they will never rust and wear out the rubber parts. You probably can't buy new wheel cylinders for the E model- so this is the easiset way to get them back in safe operation. Firemack

Jim Send the original brake shoes and wheel cylinders to White Post Restorations http://www.whitepost.com/ They specialize in rebuilding brake systems and guarantee them for as long as you own the vehicle. They rebuilt my B75F brake shoes, wheel cylinders and master cylinder, they do excellent work. Turnaround was one day. Firemack

Bob, Most of B Models with Hydraulic Brakes I have seen, have a round access panel under the drivers seat about 4" in diameter, with a single screw holding it so you can swing the access panel out of the way to check and refill the fluid level in the master cylinder. Is it possible that someone replaced the floor panel and forgot about the access panel? This would be an easy modification to make it similar to the factory access panel if needed. If you need hydraulic brake repairs, most of the hydraulic parts are no longer available thru Mack or Napa, I had mine rebulit with brass sleeves by Whitepost for about the same cost as a new master cylinder but the Whitepost rebuild is guarantted for the life of the vehicle- so made more sense to go with Whitepost than a new NAPA master cylinder. Hope you get this one back on the road for the season, Firemack

Gregg, I used the T-3 Headlights which were used in many of the trucks in the 1950's and 60's. These are from Lectric Limited http://www.lectriclimited.com/lighting_fuse_sets.htm. My build sheet shows headlamp part number 2mo46p2, or sealed unit 102m021p2. You can check with Barry to see if these numbers have been superseded with a newer headlamp. Since Mack used Delco-Remy for voltage regulator, generator and starter, I think the T3 lights make sense since they were offered on GM/Delco products in that timeframe. Firemack

Lmackattack- They just made a new HO Scale B Model Fire truck based on our Radnor B75, made by Athearn, it looks correct in almost all details except they used the standard closed cab- ours is an open cab. I have heard if they get enough buyers for the closed cab they will consider making the open cab version. This is much more accurate than the Corgi B model series. here is the link: http://www.athearn.com/Products/Default.aspx?ProdID=ATH91841 Happy Trucking and Railroading! Firemack

Here is another Siren and Vintage emergency lights vendor for Firetrucks: http://www.sirenman.com/sirens/ssales.html I used this guy to help repair my Federal Q in the 1954 B75. Firemack

Greg, There are a few of us that are Mack Fire Truck members and most likely can source most of the parts you need between Watts and other Firetruck speciality vendors. Make a list of what you need and post it and then we suggest vendors, like the recent post on sirens. Firemack

Pavrguy3, I have the listing of all of the B75's firetrucks if you have the serial Number (serial number on the pump panel or rt side frame rail) I can tell you where it was originally sold. What shape is it in? There were only 54 B75 Firetrucks made- check and see if it still has the fire truck engine- it should have dual iginition and should be a ENF 464. Engine number is on the right front by the water pump. Firemack

66C-95, Are you looking for the dimension of the round gasket that goes in the top filter cover? Firemack

Some gauges have the bezel pressed on and cannot be removed without cutting the bezel and prying it off the guage housing. If you can take a picture of the gauge and back of the gauge and post it on the site , we should be able to determine how to take it apart. I have a guy here in my Fire Department and he works with gauges and might be able to take it apart, and get the new glass made, or worst case there are gauge repair companies that will restore the gauge to like new but costs a few $$$. Start with posting the pictures then we can help you decide what path will work best. Firemack

The Hall Scott engine was used on large GPM fire trucks through the 1940-1950 timeframe. Harvey Eckart has written several Books on the Mack Fire trucks and you can find some information on the engines in his L model or B model books. I don't know if the Mack Museum has specific info on how many trucks had a HS engine. Firemack

66 C-95 Here are the dimensions: Original WIX 51503 H 8.25" 8.0" OD 4.5" 4.0" ID .625" .567" It looks like it should fit, it is less than 1/16" small on the ID but I think that the original had a good clearance on the ID (and has a rubber gasket to take up the slack) so it should work. Try it out and let us know. Thanks Firemack

Engine 2 qtrs, Barry and I looked into this about a year ago, and I have a master oil filter cross reference, I have tried every other filter, Wix 51237, Fleetgard LF539, Purolator P525, Hastings 606, Baldwin C36M, Fram C147, I have not had any luck finding these, anyone else have any ideas? I think the best solution is a close match like 66-C95 is trying , if it works we can then use it. FireMack

Hectorcillo, Nice Trucks- Where were they when I was in Puerto Rico? I never saw anything like that, they are all beautiful, Thanks for posting them! Firemack

66-c95F That sounds like a good replacement- the original oil filter is not a full flow- meaning it does not filter all of the oil all of the time- it filters a portion of the oil, and the 1/2" less diameter should not be a problem, and it uses a spring to take up the height difference. Once you have it- see if it fits and let us know what the part number is and we can also try it out. Firemack

Hi Newbie, We have a few CF's on this site, and have plenty of resources to keep the CF looking and running good. What engine and trans do you have in that unit? Where are you located? We have a lot of CF's here in PA- and always looking to get them out and see them in Parades. Let us know if you need help with anything - alot of good experience on this site with Diesel's and Firetrucks if you run into any problems. Welcome! Firemack

Todd, Nice work, looks like a lot of work, that should keep the truck warm for awhile, Firemack

JGG, The L model looks great, will we see it on the parade route in PA this year? How much of the work has been done by your team in the Fire Company? It is great to see another Mack Fire Truck get restored and back on the road! Firemack

Here is a supplier: Classic Carburetors Mark Buber 3116 E. Shea Blvd. Phoenix, AZ 85028 602-971-3300 They have parts for all old carbs and can bench test and diagnose problems with carbs. Keep that LJ back on the road! Firemack