PEE WEE Posted December 28, 2012 Share Posted December 28, 2012 Whats the best way to replace lifter in 2000 e7 Mack 460 Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/ Share on other sites More sharing options...
turckster Posted December 29, 2012 Share Posted December 29, 2012 The only way to replace a lifter on an etech engine is to remove the camshaft. The lifters will have to be supported by magnetic tipped rods slightly longer than the pushtubes. There is a special tool that clips onto the rear of the cam to aid in removal. The cam weighs about 90 lbs with the gear. Are you replacing the lifter due to damage? Better take a good look at the cam lobe, it could be damaged as well. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-153827 Share on other sites More sharing options...
PEE WEE Posted December 29, 2012 Author Share Posted December 29, 2012 Thanks, and yes one of the rollers broke Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-153897 Share on other sites More sharing options...
staxx Posted December 29, 2012 Share Posted December 29, 2012 You will also need to check the H-rings these hold the lifter in position and if it has been knocked loose you will need to relace , which involves removing cylinder head. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-153937 Share on other sites More sharing options...
PEE WEE Posted December 30, 2012 Author Share Posted December 30, 2012 Ok Thanks for the info , already have the head off thanks to a mechanic who claimed they knew what they were doing by removing the head and saying the lifter can be removed from the top but I see that was false. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154088 Share on other sites More sharing options...
fjh Posted December 30, 2012 Share Posted December 30, 2012 Bummer!The cam is likly damaged Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154091 Share on other sites More sharing options...
fjh Posted December 30, 2012 Share Posted December 30, 2012 Just sum more info the cam keys are not the same on some HP engines Be sure this guy PAYS atention when pressing off the gear and removing the key some are off set majority are straight but you may have a minority engine 460 HP is straight! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154095 Share on other sites More sharing options...
staxx Posted December 30, 2012 Share Posted December 30, 2012 If lifter is damaged cam most likely has damage also so... do not reuse cam unless you are for sure it is ok , will need to remove unit pumps and rollers also to get cam out cam gear gets pressed off and heated up to be reinstalled. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154098 Share on other sites More sharing options...
MACKTRUCKS4 Posted December 30, 2012 Share Posted December 30, 2012 If you think the cam is damaged, you can have it reground. I did one in my 94 E-7, reground the cam, reground the lifters, and had to buy one new lifter, saved a boat load of money compared to buy a new cam and all new lifters. Sent them out and had them back in about a week. If you need info on where I got them done, let me know and I will have to look for it. 1 Quote Live every day like it's your last, because one of these days, it will be. Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154123 Share on other sites More sharing options...
staxx Posted December 30, 2012 Share Posted December 30, 2012 Mack has had way to many issues with the cams in the E-tec engine I would NOT suggest regrinding camshaft !!!!!!! Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154126 Share on other sites More sharing options...
staxx Posted December 30, 2012 Share Posted December 30, 2012 The older e7 cams where ok to regrind have no issues there but etec,s go threw sevral heat harding processes that a regrind cannot supply you with. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154127 Share on other sites More sharing options...
theakerstwo Posted December 31, 2012 Share Posted December 31, 2012 Staxx i am or was like you untill i found out about a new method of grinding. No heat in this method. Its all in plating the lobs and then polishing or grinding and some i know of has been out two years that i have been around. Now the lifers have the finish reinstalled by a slice of something refused or welded to the face of the lifter . My self if i need a cam and have no more which i will not run out of them i will use these guys.In the past i have seen rewelded cams with bad results but this sounds like a good process to me. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154202 Share on other sites More sharing options...
staxx Posted December 31, 2012 Share Posted December 31, 2012 Are you talking about the e7 or etec big differance on cam etec has rollers not saying it couldnt be done just dont know anyone that has had it done to a etec engine cam. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154240 Share on other sites More sharing options...
theakerstwo Posted December 31, 2012 Share Posted December 31, 2012 Are you talking about the e7 or etec big differance on cam etec has rollers not saying it couldnt be done just dont know anyone that has had it done to a etec engine cam.The E7 and the Etec would be a total mistake and i never tought of it cause i have only been two of those before i retired.Both had the dowel pin broken in the block. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154262 Share on other sites More sharing options...
PEE WEE Posted December 31, 2012 Author Share Posted December 31, 2012 I just joined this forum and I really appreciate all the info guys it really helps out alot! Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154280 Share on other sites More sharing options...
staxx Posted December 31, 2012 Share Posted December 31, 2012 I could go for a e7 regrind ..isky use to make a replacement cam at one time so called souped up as I remember dont know if they still sell it though. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-154282 Share on other sites More sharing options...
MadDog Salvaje Posted March 26, 2017 Share Posted March 26, 2017 Seeing how you guys are talking about the cam and Hrings I have a push rod that does not spin it seems to fall into a pit when I try to spin it and only spins half way and stops. Its causing the bridge on the valves to jump off. Does this sound like the roller, H ring, or Cam? Trying to see if this is a sign of either one. Am I removing head or just cam. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-365654 Share on other sites More sharing options...
chad4142 Posted July 8, 2019 Share Posted July 8, 2019 On 12/28/2012 at 11:26 PM, turckster said: The only way to replace a lifter on an etech engine is to remove the camshaft. The lifters will have to be supported by magnetic tipped rods slightly longer than the pushtubes. There is a special tool that clips onto the rear of the cam to aid in removal. The cam weighs about 90 lbs with the gear. Are you replacing the lifter due to damage? Better take a good look at the cam lobe, it could be damaged as well. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427277 Share on other sites More sharing options...
chad4142 Posted July 8, 2019 Share Posted July 8, 2019 On 12/28/2012 at 11:26 PM, turckster said: The only way to replace a lifter on an etech engine is to remove the camshaft. The lifters will have to be supported by magnetic tipped rods slightly longer than the pushtubes. There is a special tool that clips onto the rear of the cam to aid in removal. The cam weighs about 90 lbs with the gear. Are you replacing the lifter due to damage? Better take a good look at the cam lobe, it could be damaged as well. do you know the name of the magnetic rods to support lifters, also the name of the tool that clips on to the rear of the cam ? Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427278 Share on other sites More sharing options...
Mack Technician Posted July 8, 2019 Share Posted July 8, 2019 27 minutes ago, chad4142 said: do you know the name of the magnetic rods to support lifters, also the name of the tool that clips on to the rear of the cam ? You need to be specific about what year truck you have on tool questions. If It's an E-Tech the cam shoe google Mack J 41682. The hold magnets google J 42425. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427281 Share on other sites More sharing options...
chad4142 Posted July 8, 2019 Share Posted July 8, 2019 sorry working on a 98 e7 400 eup engine according to mack.. What about a place to locate a book or pdf on computer to get specs for putting cam back in and adjusting the valves clearance ? Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427296 Share on other sites More sharing options...
Mack Technician Posted July 8, 2019 Share Posted July 8, 2019 Then my numbers are good. google “Mack emedia” ...... go to “service information”. The manual is in there, free. Publication 5-106. Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427308 Share on other sites More sharing options...
chad4142 Posted July 9, 2019 Share Posted July 9, 2019 19 hours ago, Mack Technician said: Then my numbers are good. google “Mack emedia” ...... go to “service information”. The manual is in there, free. Publication 5-106. any chance you could call me and help me find that manual ? Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427374 Share on other sites More sharing options...
Mack Technician Posted July 9, 2019 Share Posted July 9, 2019 Nope Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427394 Share on other sites More sharing options...
Mack Technician Posted July 9, 2019 Share Posted July 9, 2019 (edited) https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6255&GroupId=413 Click on it. Then on "View File". Edited July 9, 2019 by Mack Technician Quote Link to comment https://www.bigmacktrucks.com/topic/29063-lifter-replacement/#findComment-427395 Share on other sites More sharing options...
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