Troy8182 Posted March 22, 2023 Share Posted March 22, 2023 i have a granit mack 2005 with a mp7 engine and im having issues on low side jake brake i was curious wich cover was high and wich was low side that way i didnt half to pull both covers? any help would be much appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/ Share on other sites More sharing options...
0 Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 A 2005 Granite, CV-713, with a Mack engine, will have an ASET-I EGR.... ( Application Specific Engine Technology - Internal EGR). It's E-7 on steroids.. Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527720 Share on other sites More sharing options...
0 fjh Posted March 22, 2023 Share Posted March 22, 2023 56 minutes ago, Troy8182 said: i have a granit mack 2005 with a mp7 engine and im having issues on low side jake brake i was curious wich cover was high and wich was low side that way i didnt half to pull both covers? any help would be much appreciated un plug where there go in to the head and try the brake you will find out in short order! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527654 Share on other sites More sharing options...
0 Freightrain Posted March 22, 2023 Share Posted March 22, 2023 Or test light the wire to each. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527657 Share on other sites More sharing options...
0 Joey Mack Posted March 22, 2023 Share Posted March 22, 2023 Yes to all that, and you can also jump power off the alternator to the pin sicking out of the valve cover and hear the celenoid click. Front I s low and both are high. Be careful pulling the valve cover, the celenoid wire is shet and doesn't allow you to lift the valve cover very high.. I assume AI engine and not an MP-7 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527659 Share on other sites More sharing options...
0 mechohaulic Posted March 22, 2023 Share Posted March 22, 2023 can the phrase having issues be narrowed down ? low side works ; not great or not working at all. do the new solenoids have o-rings ?? possibly failed o-ring. which case a solenoid can be heard when current placed to it yet faulty o-ring would lessen working capabilities ??? i' m liking to learn the new stuff. Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527660 Share on other sites More sharing options...
0 Joey Mack Posted March 22, 2023 Share Posted March 22, 2023 Mech.. the ASET- series uses a Mack branded engine brake called Power leash... There are 2 rings per celenoid. The bottom one will cause the engine brake to stay on at all times if it fails. Regardless of switch position. Good question about weak operation or no operation.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527671 Share on other sites More sharing options...
0 mechohaulic Posted March 23, 2023 Share Posted March 23, 2023 hope the "power leash " took lesson from dynatard actually does something besides make noise 😄 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527714 Share on other sites More sharing options...
0 The Rubber Duck 006 Posted March 23, 2023 Share Posted March 23, 2023 1 hour ago, mechohaulic said: hope the "power leash " took lesson from dynatard actually does something besides make noise 😄 The Green Hornet's MP8 has the power leash or Brake leash on it. It works really well. Basically if I set the cruise and flip the switch for the Jake's the brake leash allows me to set the speed at which the Jake's come on. So if I set the cruise at 70 I can set the brake leash for 72 and if the truck gits above that the Jake's kick in. Don't know if it's the same thing they're talking about though. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527717 Share on other sites More sharing options...
0 Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 Mech. The Power leash actually works good. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527721 Share on other sites More sharing options...
0 mechohaulic Posted March 23, 2023 Share Posted March 23, 2023 11 hours ago, The Rubber Duck 006 said: The Green Hornet's MP8 has the power leash or Brake leash on it. It works really well. Basically if I set the cruise and flip the switch for the Jake's the brake leash allows me to set the speed at which the Jake's come on. So if I set the cruise at 70 I can set the brake leash for 72 and if the truck gits above that the Jake's kick in. Don't know if it's the same thing they're talking about though. for an ole man such as myself, reading how the computers are taking more responsibility for the driving;/operation of the big rigs. it's like the tv commercials showing the self driving cars. basically the computer puts the engine brake on . times change . guess it's a positive. Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527733 Share on other sites More sharing options...
0 The Rubber Duck 006 Posted March 23, 2023 Share Posted March 23, 2023 1 minute ago, mechohaulic said: for an ole man such as myself, reading how the computers are taking more responsibility for the driving;/operation of the big rigs. it's like the tv commercials showing the self driving cars. basically the computer puts the engine brake on . times change . guess it's a positive. Yeah It's something to git used to. I'm just glad it still has the Stage Switch and the Jake actually does it's job lol. The brake leash is nice. I think on The Green Hornet it's called Cruise brake on the screen. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527735 Share on other sites More sharing options...
0 mechohaulic Posted March 23, 2023 Share Posted March 23, 2023 easiest way is to call them all engine brakes; whether it be a dynatard, power leash, brake leash or (best for last ) jake brake!! LOL long as it's NOT called exhaust brake . which are good just not best. my '93 Hino had an exhaust brake . I found it to be great for a little 6 wheeler when max out on GVW. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527737 Share on other sites More sharing options...
0 Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 Mech.. I have had the opinion for years that the truck buyer of today is the R+D for the truck makers, to help develope driverless trucks.. it sucks.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527744 Share on other sites More sharing options...
0 The Rubber Duck 006 Posted March 23, 2023 Share Posted March 23, 2023 I'll gladly use a machine but I'll be dead before I put my life in the Hands of a Machine just sayin'. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527751 Share on other sites More sharing options...
-1 Mark T Posted March 22, 2023 Share Posted March 22, 2023 (edited) On 3/22/2023 at 8:00 AM, Troy8182 said: i have a granit mack 2005 with a mp7 engine and im having issues on low side jake brake i was curious wich cover was high and wich was low side that way i didnt half to pull both covers? any help would be much appreciated You don't have an MP 7 with two valve covers. Or a 2005 with an MP7. just in case you search somewhere else for info. Edited March 23, 2023 by Mark T spelling Quote Link to comment https://www.bigmacktrucks.com/topic/72630-jake-brake/#findComment-527669 Share on other sites More sharing options...
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Troy8182
i have a granit mack 2005 with a mp7 engine and im having issues on low side jake brake i was curious wich cover was high and wich was low side that way i didnt half to pull both covers? any help would be much appreciated
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