One thing I missed growing up in a family business with a fleet. We only had a few Diesels and my grandad sent them out for work. We did our own engine work of the gassers. I been 'learning' on my Cummins, but that's a way different engine then the Detroits. I still need to do that gear lash we talked about.
Hello Jeff it's easier to put the wires in first then set the bridges the shim's are only for checking clearance after you adjust the bridges to adjust you back off the screw then hold the bridge down and tighten till screw touches valve stem Then tighten one more flat of lock nut and then torque lock nut then check with shim's to see that adjustment is correct Next install jumper lines then install Jake units the wires for the Jake's needs to be Jake wire because automotive wire insulation rot's off under the valve covers injector harness wiring from an old DDEC will make good jake wires also zip ty jake wires to solinoid because the units move and the wires fall off
Hey Jeff! Haven’t been able to get on the TH-cam much lately, finally had some time to rest & watch a few. Great video! I miss Gimmys so bad sometimes I’m tempted to just start wrenching on one of the abandoned ones here just for “fun”. Keep I going man! 😉
Thanks Larry! I know what you mean, I finished this work almost a month ago and I am just now getting the videos edited and uploaded. Yea it’s fun to work on a Jimmy, the 3208 is not that bad either.. both mechanical engines which is nice! I need to catch up on some of your videos.
Thanks, I'm getting ready for Jake's on our ddec 2 8v92. Looks like it'll be a little easier than mechanical. Can you isolate the grounds on the Jake solenoids? Reason is I think ours are 24v, and I could run them in series for 12v. If not, we'll find some 12v ones.
There is no ground terminal, it grounds through the body of the solenoid. I put 12v solenoids on mine and this one. I found mine on eBay, you could also check Powerline Components.
I have a 1992 kenworth with a Detroit 60 12.7 the engine is original. Didn’t come with jakes! I want to add jakes. Do you have any advice or can it even be done?
I have not added jakes to a Series 60, all the ones I worked on had them already. They are a bit more complicated on a Series 60 because someone will need to set up the computer to activate it. Take a look at this, scroll down to the section for engines before 1999 and look up your serial number: www.jacobsvehiclesystems.com/sites/default/files/2021-08/24770_DDC_App_Guide.pdf
Hi Jeff - Living out in the mountainous west I've been interested in adding Jakes to my 91 WB with an 8v92. I'm curious however if there is a significant enough compression braking improvement over the trans retarder to justify the $ investment. Can you comment on this?
I would say it’s a personal preference. I believe that the transmission retarder probably gives you more braking power. I like the fact that I now have both, so it gives me another option. I often use my jakes first and then supplement with the transmission retarder when the jakes are not enough. Each time I use the transmission retarder and see that oil temp go up to 300 it makes me cringe, and that is another reason I prefer to use the jakes when possible first. I think you have to look at it as an investment in a backup plan, and if you feel like you need or want to spend the money for that.
@@GinosGarageUSA I've already purchased the full set of jakes, valve covers, and (new) gaskets. So I'm about $1,100 into it. The jakes look to be in really good condition. The seller claimed they have low hours (although, "low hours" could be a relative statement based on your POV). I'm wrestling with installing them myself, or spending $$ to have them installed by a 2-stroke pro. BTW - just came back from a trip in Oregon where we descended a 7.5 mile 6% grade. Between gearing down and stab braking my trans temps never exceeded ~185.
@@GerryLefebvre-e1s Yea, I think your transmission probably has a temp sensor in the pan then, ours is right after it comes out of the retarder so we see a temp spike in the fluid temp. I have not installed jakes on a DDEC engine so I am not exactly sure what all needs to be done. I had a borrowed DDEC scanner and noticed that it had options to turn on and off for jakes. So I am guessing there is some kind of set up in DDEC that will need to be done. I believe there is also an interface module that is needed.
@@GerryLefebvre-e1sGotcha, we have a manual lever where we can apply the retarder, and we also can turn it on to come on any time you apply the brakes via a dash switch.
One thing I missed growing up in a family business with a fleet. We only had a few Diesels and my grandad sent them out for work. We did our own engine work of the gassers. I been 'learning' on my Cummins, but that's a way different engine then the Detroits. I still need to do that gear lash we talked about.
Hello Jeff it's easier to put the wires in first then set the bridges the shim's are only for checking clearance after you adjust the bridges to adjust you back off the screw then hold the bridge down and tighten till screw touches valve stem Then tighten one more flat of lock nut and then torque lock nut then check with shim's to see that adjustment is correct Next install jumper lines then install Jake units the wires for the Jake's needs to be Jake wire because automotive wire insulation rot's off under the valve covers injector harness wiring from an old DDEC will make good jake wires also zip ty jake wires to solinoid because the units move and the wires fall off
Thanks for the tips Joe!
Hey Jeff! Haven’t been able to get on the TH-cam much lately, finally had some time to rest & watch a few. Great video! I miss Gimmys so bad sometimes I’m tempted to just start wrenching on one of the abandoned ones here just for “fun”. Keep I going man! 😉
Thanks Larry! I know what you mean, I finished this work almost a month ago and I am just now getting the videos edited and uploaded. Yea it’s fun to work on a Jimmy, the 3208 is not that bad either.. both mechanical engines which is nice! I need to catch up on some of your videos.
I’m rounding up the parts to do this on my 6-92. About all I need is the valve covers and I’m gonna pull the trigger.
Thanks, I'm getting ready for Jake's on our ddec 2 8v92. Looks like it'll be a little easier than mechanical.
Can you isolate the grounds on the Jake solenoids? Reason is I think ours are 24v, and I could run them in series for 12v. If not, we'll find some 12v ones.
There is no ground terminal, it grounds through the body of the solenoid. I put 12v solenoids on mine and this one. I found mine on eBay, you could also check Powerline Components.
I have a 1992 kenworth with a Detroit 60 12.7 the engine is original. Didn’t come with jakes! I want to add jakes. Do you have any advice or can it even be done?
I have not added jakes to a Series 60, all the ones I worked on had them already. They are a bit more complicated on a Series 60 because someone will need to set up the computer to activate it. Take a look at this, scroll down to the section for engines before 1999 and look up your serial number:
www.jacobsvehiclesystems.com/sites/default/files/2021-08/24770_DDC_App_Guide.pdf
Hi Jeff - Living out in the mountainous west I've been interested in adding Jakes to my 91 WB with an 8v92. I'm curious however if there is a significant enough compression braking improvement over the trans retarder to justify the $ investment. Can you comment on this?
I would say it’s a personal preference. I believe that the transmission retarder probably gives you more braking power. I like the fact that I now have both, so it gives me another option. I often use my jakes first and then supplement with the transmission retarder when the jakes are not enough. Each time I use the transmission retarder and see that oil temp go up to 300 it makes me cringe, and that is another reason I prefer to use the jakes when possible first. I think you have to look at it as an investment in a backup plan, and if you feel like you need or want to spend the money for that.
@@GinosGarageUSA I've already purchased the full set of jakes, valve covers, and (new) gaskets. So I'm about $1,100 into it. The jakes look to be in really good condition. The seller claimed they have low hours (although, "low hours" could be a relative statement based on your POV). I'm wrestling with installing them myself, or spending $$ to have them installed by a 2-stroke pro. BTW - just came back from a trip in Oregon where we descended a 7.5 mile 6% grade. Between gearing down and stab braking my trans temps never exceeded ~185.
To be clear, I have my retarder set to activate only when I brake ("engaged").
@@GerryLefebvre-e1s Yea, I think your transmission probably has a temp sensor in the pan then, ours is right after it comes out of the retarder so we see a temp spike in the fluid temp. I have not installed jakes on a DDEC engine so I am not exactly sure what all needs to be done. I had a borrowed DDEC scanner and noticed that it had options to turn on and off for jakes. So I am guessing there is some kind of set up in DDEC that will need to be done. I believe there is also an interface module that is needed.
@@GerryLefebvre-e1sGotcha, we have a manual lever where we can apply the retarder, and we also can turn it on to come on any time you apply the brakes via a dash switch.