Broken Down off of I-10 Louisiana

luvrbus · January 29, 2020, 02:33:58 PM

Retarder run in a separate cavity with oil on a vane on a Allison they do heat the fluid up but we are talking about operating temps .Jakes are easy to install I may have a set I can send you but I know I don't have the module for a DDEC ll you would have to wire it direct from a switch which means you control it not the engine so it not automatic

luvrbus · January 29, 2020, 03:01:26 PM

That engine has the tall valve covers for Jakes

chessie4905 · January 29, 2020, 03:58:41 PM

An engine running cold is a big difference. Do a temp check on the road on a trans with just an air cooler. Since he runs a retarder, I doubt it will run cold, unless fan is on all the time. Electronic trans, then another story. Or he can reduce horsepower to 400, lose a little speed on the hills and have an engine that will last a lot longer with much less heat rejection.

uncle ned · January 30, 2020, 07:38:15 AM

Scott what is the final story on your engine.

Also running a allison cool and straight oil has me worried.

Huggy has ran for over 20 years with only a hayden cooler and on straight motor oil.

hope it will not give up the ghost.

uncle ned

Scott & Heather · January 30, 2020, 01:01:41 PM

I'm running transynd gold in the Allison. I'll make it work. I don't spend much time in the cold anymore.

Engine is coming out and new one going in.

Photos of my new one :

bobofthenorth · January 30, 2020, 02:33:25 PM

Looks pretty shiny. Might want to spill a little waste oil on it to baptize it before you stick it back in. If you're doing that in Jack's shop it will be pristine. Take lots of pix.

Scott & Heather · January 30, 2020, 07:51:29 PM

Can't wait to get this swap done. Engine should arrive next week. It's wrapped and on the shipping dock.

I know a guy who owns the AAMCO trans shop in Clearwater and he's going to find me a Hayden trans cooler for cost. That's going to save me some $$

Three questions:

1. Should I send my vickers power steering pump somewhere to be rebuilt or order the kit and do it myself?

2. Best belt driven 50dn alternator source? And which pulley do I need to make this work?

3. Anyone know a source and size to reduce my squirrel cage fan pulley to spin them a hair faster? My gearbox is in good shap so not worried about spinning it a little faster.

Iceni John · January 30, 2020, 08:41:15 PM

Quote from: luvrbus on January 29, 2020, 02:33:58 PM
Jakes are easy to install I may have a set I can send you but I know I don't have the module for a DDEC ll you would have to wire it direct from a switch which means you control it not the engine so it not automatic

I have Jakes and DDEC II, but no Jake module! Instead there's just a simple $10 Bosch or Hella 5-pin cube relay, and it works fine. The DDEC decides when the Jakes can potentially be used, irrespective whether you choose to actually use them or not, by grounding one wire (I don't have my manual in front of me now to tell you which wire) of the Vehicle Interface Harness, and this grounded Jake wire then activates the relay that can send power to the Jake solenoids if you have the Jakes turned on. Sorry if that's a confusing description, but it's pretty simple really! I was skeptical when I first saw this relay under my dash, but it makes sense to me now - cube relays can convert a NO condition into a NC condition, or vice versa.

One more thing I almost forgot, but is really important. The relay must have a diode on it to prevent spikes of power back-feeding into the DDEC when it operates. Without this diode you'll probably damage the DDEC, or worse. Again, I can't remember right now which pins this diode is on, but I can check it this weekend if you need to know.

John

richard5933 · January 31, 2020, 12:07:27 AM

Quote from: Scott & Heather on January 30, 2020, 07:51:29 PM...

1. Should I send my vickers power steering pump somewhere to be rebuilt or order the kit and do it myself?...

I just got a rebuilt one from Luke and sent my old one back for the core charge. If I remember, it wasn't worth it to rebuild.

luvrbus · January 31, 2020, 04:16:48 AM

Quote from: Iceni John on January 30, 2020, 08:41:15 PM
I have Jakes and DDEC II, but no Jake module! Instead there's just a simple $10 Bosch or Hella 5-pin cube relay, and it works fine. The DDEC decides when the Jakes can potentially be used, irrespective whether you choose to actually use them or not, by grounding one wire (I don't have my manual in front of me now to tell you which wire) of the Vehicle Interface Harness, and this grounded Jake wire then activates the relay that can send power to the Jake solenoids if you have the Jakes turned on. Sorry if that's a confusing description, but it's pretty simple really! I was skeptical when I first saw this relay under my dash, but it makes sense to me now - cube relays can convert a NO condition into a NC condition, or vice versa.

One more thing I almost forgot, but is really important. The relay must have a diode on it to prevent spikes of power back-feeding into the DDEC when it operates. Without this diode you'll probably damage the DDEC, or worse. Again, I can't remember right now which pins this diode is on, but I can check it this weekend if you need to know.

John

I was told you can buy the module a after market made for Prevost for under 50 bucks now,He has to be careful with a relay hookup he has a 24v volt system and the Jakes and ECM are 12v on his engine.I was going to send him a 24v system with a pressure switch to work off the transmission it would be automatic and works ok plus it takes the hard to find DDEC ll ECM out of the loop

Scott & Heather · January 31, 2020, 04:59:08 AM

Thanks Richard for the note about the power steering pump. I'll call Luke this morning.

John, sounds pretty effective. If I can have a manual control for the jakes I'm going to just go for that and as cliff said, just keep the DDEC out of the loop. I have enough DDEC related weird issues that I'm fine not adding to them. Cliff, please do send the jakes set because I'm absolutely wanting jakes at this point. We go west a couple times a year and I run some serious hills when we do it and at 47,000 lbs gross with my toad, I'm ready for Jakes.

I'll send you an address over Facebook message. (Unless you remember jacks address by heart)

Bob, I'll take a ton of photos and video of the process lol. Hoping not to spill anything on jacks shop floor!

buswarrior · January 31, 2020, 09:02:40 AM

On the fan pully.

The way Fred Hobe talked, i got the impression that these pullies were an off the shelf type thing, just swap for a smaller one.

Need a good industrial supply house.

Pull yours off and take it in with you.

How are the cones inside the fan intakes?
Fred also emphasized they had to be good.

Happy coaching!
Buswarrior

chessie4905 · January 31, 2020, 05:02:02 PM

Make sure you get the big Haydn oil cooler designed to be used standalone. The models are listed in a pdf. of available models for various Allison transmissions. I think it also has 1" fittings. BTW, do you have a misting system. Extra insurance for hot times and climbing long grades.

Scott & Heather · February 02, 2020, 09:12:07 AM

Bus warrior, the cones are good. The entire fan box was rebuilt when I bought the bus thankfully.

Chessie, I do have a misting system and it's very effective. I just like to save it for the worst grades and hot days because man I can go through water fast.

eagle19952 · February 04, 2020, 04:43:44 PM

If you are still in need of v92 Jake parts I can help. Send a msg. here or FB. I am 4 hours south of Nashville.
PS I sent a FB PM too.