Brandt Posted August 16 Share Posted August 16 (edited) This is my steer axle brake can and it is leaking. Local Mack wants $1050, I did find one online for $830. Still a far cry from the $120 that I was expecting. Is there a cross over to a standard can or am I stuck with this part? The Bendix Rotochamber P/N is 101260N [url=https://postimg.cc/PpRBnq4X][img]https://i.postimg.cc/D0vFsJ4X/IMG_3333.jpg[/img][/url] [url=https://postimg.cc/PPZ00T8H][img]https://i.postimg.cc/zXP5bfzy/IMG_3332.jpg[/img][/url] Edited August 16 by Brandt Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/ Share on other sites More sharing options...
Joey Mack Posted August 16 Share Posted August 16 I wonder if the bolt distance is the same as a modern brake chamber. Then you could put a pair of 24's on it and drive on 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580840 Share on other sites More sharing options...
Geoff Weeks Posted August 16 Share Posted August 16 If the "can" is good, open it up and replace the diaphragm: https://www.anythingtruck.com/product/060-236528.html Otherwise I would suggest replacing both chambers with type 24 clamp type. I think you might have trouble on inspection with one of each. Technically it should be ok, same area, but might be frowned on, being mixed. I would keep the rotochamber if it is otherwise ok. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580841 Share on other sites More sharing options...
Popular Post Joey Mack Posted August 16 Popular Post Share Posted August 16 Looks like 2 of us had the same thoughts.. definitely do both for even brake performance and compliance for the law man 1 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580842 Share on other sites More sharing options...
Geoff Weeks Posted August 16 Share Posted August 16 17 minutes ago, Joey Mack said: Looks like 2 of us had the same thoughts.. definitely do both for even brake performance and compliance for the law man, if you have such law men in The UK. I believe he is in Wyoming, so same Law as you and I I would keep the rotochamber, for two reasons, one is clearance, rotochambers are smaller in dia than clamp type of the same area, there may be clearance reasons rotochambers were used. 2nd is rotochambers are better (but way more expensive) as the force applied stays more or less constant over the stroke. As long as the "can" is serviceable, replacing the diaphragm leaves you better off. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580844 Share on other sites More sharing options...
Joey Mack Posted August 16 Share Posted August 16 (edited) Looks like 2 of us had the same thoughts.. definitely do both for even brake performance and compliance for the law man, Edited August 16 by Joey Mack Incorrect info Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580846 Share on other sites More sharing options...
Joey Mack Posted August 16 Share Posted August 16 Yep... Hes here in the US.. i dont know how i git him confused with nathan in the UK Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580847 Share on other sites More sharing options...
Joey Mack Posted August 16 Share Posted August 16 Paul, i screwed up. I thought it was Nathanwhit in the UK. I git it mixed up with a local US posting.. Just letting you know that i wanted to help, but didnt do my homework first.🍻 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580849 Share on other sites More sharing options...
mechohaulic Posted August 17 Share Posted August 17 3 hours ago, Joey Mack said: Paul, i screwed up. I thought it was Nathanwhit in the UK. I git it mixed up with a local US posting.. Just letting you know that i wanted to help, but didnt do my homework first.🍻 not a screwup;;just an over taxed brain cells doing their best. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580857 Share on other sites More sharing options...
mechohaulic Posted August 17 Share Posted August 17 5 hours ago, Joey Mack said: I wonder if the bolt distance is the same as a modern brake chamber. Then you could put a pair of 24's on it and drive on USUALLY the 24'S WILL (would ) bolt up directly. main issue Use to be the position of the 24 band clamp. the 24's HAD a two bolt clamp; with today's cheaper manufacturing there may only be one bolt. Mack roto's had a felt wiper and o=ring inside. replacing to 24's easy ?? either install the 24 on axle and using slack , back off the slack to compress inside spring. large C-clamp to hold canister together ;main purpose not to disturb the diaphragm. rotate the clamp horizontal to vertical basically. or what ever position gives clearance. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580858 Share on other sites More sharing options...
Popular Post mechohaulic Posted August 17 Popular Post Share Posted August 17 4 hours ago, Joey Mack said: Yep... Hes here in the US.. i dont know how i git him confused with nathan in the UK gets worse as old age closes in !!🤣 3 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-580862 Share on other sites More sharing options...
Brandt Posted Sunday at 01:46 PM Author Share Posted Sunday at 01:46 PM I'll try the 24 cans and see if it is an "easy" swap. If not, I'll try Geoff's link and rebuild it. Are there any springs in there that will take my heads off?? Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581816 Share on other sites More sharing options...
Joey Mack Posted Sunday at 02:33 PM Share Posted Sunday at 02:33 PM Not on a single stage can. Maxi's have that spring, but it is not made to take apart any more. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581818 Share on other sites More sharing options...
Geoff Weeks Posted Sunday at 08:51 PM Share Posted Sunday at 08:51 PM There is a return spring, just like on a clamp type chamber, but it is weak just to return the piston, not like a spring brake, which provides the braking force. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581859 Share on other sites More sharing options...
mowerman Posted Sunday at 09:55 PM Share Posted Sunday at 09:55 PM I was thinking the same thing it doesn’t look like they come apart anymore used to be able to change a little cereal bowl looking thing inside. I’ve done a few of them … bob Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581861 Share on other sites More sharing options...
Geoff Weeks Posted Sunday at 10:01 PM Share Posted Sunday at 10:01 PM 5 minutes ago, mowerman said: I was thinking the same thing it doesn’t look like they come apart anymore used to be able to change a little cereal bowl looking thing inside. I’ve done a few of them … bob The one he has come apart with a ring a screws around the outside to take apart. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581862 Share on other sites More sharing options...
mowerman Posted Sunday at 10:13 PM Share Posted Sunday at 10:13 PM Oh, OK. Gotcha. Might be able to do a little better than 800 and some change my God that’s a lot of money. For a stinking brake can. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581863 Share on other sites More sharing options...
Geoff Weeks Posted Sunday at 10:22 PM Share Posted Sunday at 10:22 PM The "bladder" is about $200 +/- depending on where you get. Toss up between two Type 24's or one "badder" for the can. I would keep the rotochamber, but that is me. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581865 Share on other sites More sharing options...
mechohaulic Posted Sunday at 11:23 PM Share Posted Sunday at 11:23 PM those Philip screws at time are a challenge, rusted in the heads strip. do all that work only to find out the cyl has a worn ridge, another sign of the times:: older was better, just can't find those parts anymore. 2 X 24 in todays world a tad more positive ;; not better just more positive. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581867 Share on other sites More sharing options...
Geoff Weeks Posted Sunday at 11:33 PM Share Posted Sunday at 11:33 PM (edited) It is not a piston that wears a ridge, If the can is solid and the screws come out, your good to go. There is no wearing contact between the piston and the outside, the bladder is a "rolling lobe" like an air bag on air ride. Edited Monday at 01:07 AM by Geoff Weeks add photo Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581868 Share on other sites More sharing options...
mechohaulic Posted Monday at 04:52 PM Share Posted Monday at 04:52 PM to clarify , the front chamber to which I was referring used by Mack early days did not have a diaphragm as picture shows. was similar in outside design having ring of outer philip head bolts holding it together ;;but inside had a plunger ( possibly alum) with large O-ring and felt wiper which sealed against outer shell. constant wear created a ridge inside. repair kit consist of new shell/wiper/o=ring. the 24 replaced this style. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581900 Share on other sites More sharing options...
Geoff Weeks Posted Monday at 05:43 PM Share Posted Monday at 05:43 PM (edited) 50 minutes ago, mechohaulic said: to clarify , the front chamber to which I was referring used by Mack early days did not have a diaphragm as picture shows. was similar in outside design having ring of outer philip head bolts holding it together ;;but inside had a plunger ( possibly alum) with large O-ring and felt wiper which sealed against outer shell. constant wear created a ridge inside. repair kit consist of new shell/wiper/o=ring. the 24 replaced this style. I don't know, the O/P listed a part number which is for a Bendix rotochamber. That Bendix looks identical to the chamber in the picture. There were piston chambers, most I've seen are for spring brakes. Piston compresses the spring brake, diaphragm for service. https://www.amazon.com/Bendix-101260N-Rotochamber/dp/B0BVYDKZ4B Edited Monday at 05:44 PM by Geoff Weeks Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581903 Share on other sites More sharing options...
mechohaulic Posted Monday at 06:00 PM Share Posted Monday at 06:00 PM It took a while but to save my sanity and prove my innocents. I found a picture of a similar NOT exact front brake chamber to which I have spoken. happens to be on ebay . the Mack number is ::19QU396P5, wagner number 103151. old school air chamber not having contoured outer can. /ring of bolts with base; bolt protector. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581904 Share on other sites More sharing options...
mechohaulic Posted Monday at 06:02 PM Share Posted Monday at 06:02 PM an original version had the philips head bolts also notice more bolts hold it together. Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581905 Share on other sites More sharing options...
mechohaulic Posted Monday at 06:03 PM Share Posted Monday at 06:03 PM I haven't mastered the picture taking/ web address posting . Quote Link to comment https://www.bigmacktrucks.com/topic/75862-steer-axle-can/#findComment-581906 Share on other sites More sharing options...
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