| Author | Message | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 71 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
I had to make these images quite small to get down to the size limit, but I need help on identifying the part that is missing from my jake brake.   In the second (close-up) picture it appears that there are spacers and perhaps a rod, bolt, pin or other device to act as a plunger to activate the jake. Any help would be appreciated. Thanks dg | ||
| Larry Higuera (Larryh)
Registered Member Username: Larryh Post Number: 21 Registered: 6-2006 Posted From: 148.78.52.146 Rating: N/A |
It looks like to me the rubber grommet that the elect wire goes through as well as wire to activate jake brake is missing. LarryH | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 73 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
Thanks Larry, take a look at http://www.wheresdoyle.com/missing-pin-big.gif for a clearer idea. [Ian: I didn't know how to make this small enough to post here... Thanks] Is there a web source that has a diagram with parts numbers etc. for the Jake brake control for the 8V71N dg (Message edited by TexasBorderDude on September 20, 2007) | ||
| Tim (Timkar)
Registered Member Username: Timkar Post Number: 76 Registered: 10-2004 Posted From: 24.64.223.203 Rating: N/A |
Here's a link that was posted a little while ago.. http://www.jakebrake.com/ | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 74 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
Thanks, Tim I had gone on it and looked at their stuff, but didn't see anything (for the 71/92 series units) that looked like my setup. | ||
| Jack Conrad (Jackconrad)
Registered Member Username: Jackconrad Post Number: 646 Registered: 12-2000 Posted From: 76.1.180.218 Rating: N/A |
The actual Jake Brake solenoids should be activated electrically by a "buffer switch" that goes in the govenor. Jack | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 75 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
Thanks to all... the guys at Fabco said that everything looked intact on the solenoids, elec. connections, etc. butt they said there is some mechanical linkage missing at the location I included in the photos. As best I can describe it there is a "U" shape bracket with the opening on the "U" facing West in the photo. The lower right corner of the bracket is at the intersection of the 2 black wires that cross just above the lift ring comming up from the bottom of the photo. If you follow the center line of that lift ring up to just below the radiator resivoir there is a shiny spot... the Fabco guys thought this was the spot where a pin would bear on. Anyone got an 8V71N that looks like this? Maybe you'd spot something missing in my photo. Thanks to all who have looked and replied. dg | ||
| Larry Higuera (Larryh)
Registered Member Username: Larryh Post Number: 22 Registered: 6-2006 Posted From: 148.78.52.146 Rating: N/A |
Doyle My 8v71 don't have anything like your describing .Are you a automatic tranny?? Mine is 4 speed spicer. LarryH | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 76 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
Ahhh, yes. I failed to mention it's an H740. I'll investigate further and try to determine just what this linkage is connected to. Thanks again Larry. | ||
| Mike Eades (Mike4905)
Registered Member Username: Mike4905 Post Number: 154 Registered: 12-2000 Posted From: 68.200.183.92 Rating: N/A |
Doyle Call Bill at U.S.Coach He helped me with mine in my 4905. It worked and then it died. He changed the pull soleniod and it works great. Chech the pull for voltage, needs to be 24 volt. all wires need to be checked for pinching into valve covers and make sure you have the large valve covers or it won't work. Mike4905 | ||
| Doyle Gaither (Texasborderdude)
Registered Member Username: Texasborderdude Post Number: 78 Registered: 3-2007 Posted From: 66.188.231.49 Rating: N/A |
Thanks Mike, good heads-up and I'll give him a call. My coach is a 12v system. Seems there always "mucho" variables! dg | ||
| Jack Hart (Jackhartjr)
Registered Member Username: Jackhartjr Post Number: 3 Registered: 8-2007 Posted From: 64.12.117.73 Rating: N/A |
When you go to the Jake Brake site you can download a Manual for the 71's. (And all others too. Jack Hart |