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Labor Day Putting down your wrenches or time for
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| | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | I understand this topic has been done to death, so I begrudgingly ask about the 3 speed overdrive setup. I would like to have the governor in use but not the kickdown switch. Could I use a toggle switch to turn it off and on and the cable to lock the overdrive in or out? I have a relay in the fuse box I'm installing and wondering if i can run it through that instead of separate one. I'm ordering my harness from Jim Carter, they say wiring instructions are included, but I'm trying to plan ahead.
1958 Chevy Grumman Olson step van
| | | | | Joined: Jun 2005 Posts: 1,001 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,001 | Yes, I wired mine that way.
I'll dig out my wiring diagram, if you want it.
Being able to engage the solenoid directly gives you the added benefit of "hill holding". When you're at a stop light that's on a upgrade and someone is right behind you, engage your solenoid (via switch), let your truck roll back slowly until it engages, then turn the solenoid off. Your truck will stay right where it is, without the brake. When you start moving forward, the overdrive immediately disengages.
Last edited by VEW; 02/21/2019 8:28 PM.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Feb 2004 Posts: 29,740 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,740 | Is there some reason not to use the kickdown? Once the OD is engaged, it won't disengage above 30 MPH unless the kickdown switch is used. I'm not sure if turning off a manual switch would allow the solenoid lock pawl to retract, unless the clutch pedal is also depressed to unload the drivetrain. The kickdown does all that automatically, in a fraction of a second.
Jerry
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| | | | | Joined: Jun 2005 Posts: 1,001 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,001 | My OD will disengage as soon as flip the switch to the solenoid off, and let off my accelerator. I'm then in 3rd gear.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Jun 2005 Posts: 1,001 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,001 | Jerry, I read the thread "Overdrive electrical question" on this site which you contributed to and took your advise. I did use the Bosch type relay.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | Deve's Technical Network had the exact wiring diagram I was looking for- http://devestechnet.com/Figures/bwwiring.pdf
1958 Chevy Grumman Olson step van
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