International 4700 Ambo build

Baloo

"The Bear Necessities"
Nice Truck!

How well does it do up hills? The reason I ask is the SAR group I am with has an Southern Ambulance Class A unit with a 4700 Cab and the DT360 and its a bit pokey up some good hills..
When I first started driving the 4700 I found the engine to be incredibly sluggish. It turned out to be the terrible automatic transmission, the Allison AT500 does not have a lockout feature for the torque converter. After a little tranny swap (look back a few pages) to a Eaton manual the truck came to life. Then came a few adjustments, fuel rate, preboost, injector pump timing and installing a huge intercooler. Tipping the scales at close to 17K pounds it can happily tow my 6800 pound camper like it doesn't exist. I am really looking forward to towing with the water methanol kit. So far driving it with water/meth has been amazing!

My biggest bit of advice is to get the service manual, it show all the settings for manual vs automatic tranny injector pump settings (they are different). My truck was stock 12 degrees injector pump timing, where as manual tranny with an intercooler can be set 17 to 19 degrees. Mine is set to 17 and it woke the engine up, better fuel economy and much cooler egt's.

The DT360 can makes a ton of power, but I was shooting for the middle ground between reliability and performance.
 
When I first started driving the 4700 I found the engine to be incredibly sluggish. It turned out to be the terrible automatic transmission, the Allison AT500 does not have a lockout feature for the torque converter. After a little tranny swap (look back a few pages) to a Eaton manual the truck came to life. Then came a few adjustments, fuel rate, preboost, injector pump timing and installing a huge intercooler. Tipping the scales at close to 17K pounds it can happily tow my 6800 pound camper like it doesn't exist. I am really looking forward to towing with the water methanol kit. So far driving it with water/meth has been amazing!

My biggest bit of advice is to get the service manual, it show all the settings for manual vs automatic tranny injector pump settings (they are different). My truck was stock 12 degrees injector pump timing, where as manual tranny with an intercooler can be set 17 to 19 degrees. Mine is set to 17 and it woke the engine up, better fuel economy and much cooler egt's.

The DT360 can makes a ton of power, but I was shooting for the middle ground between reliability and performance.
I think we have a Voith transmission in ours; either way it has 3 gears and its awful going up hills and high climb switchbacks, which are our regular roads.

Years ago, one of the diesel techs I saw on a regular basis at my old job told me that we would be better of swapping in a DT466 into that beast than doing anything with the transmission; that didn't quite make sense, but I know he must be talking from Navistar's recommdantion. However I think it was last year, I ran into some backwoods diesel guys who told me "oh man, that motor has lots of bolt on upgrades that would help!" and mentioned something about taking the air pump from a Cummins 6.5 that I liked the idea, but didn't make sense. I think a transmission upgrade isn't out of the question; for us volunteers, we would probably go find a nice 4 speed Allison automatic.
 

Baloo

"The Bear Necessities"
Installed a shift boot to clean up the cab







Then it was time for a brighter scene light






Sent from my iPhone using Tapatalk
 

Baloo

"The Bear Necessities"
No more empty Ambo! Time to make a bumper mount too.



Guess it is time to update my signature!


Sent from my iPhone using Tapatalk
 
The slide out is nicely done!

Among many, many, many other things I am in the middle of the cooler or fridge is something I've got to figure out. I like it!

Scooter
 
Lol, I've done that same thing trying to figure out just how I am going to build a proper bed. It took a long time and many beers but I figured it out. I have to build my own bed frame if I want it to fit the way I want it to fit!

Scooter...
 

Baloo

"The Bear Necessities"
Lol, I've done that same thing trying to figure out just how I am going to build a proper bed. It took a long time and many beers but I figured it out. I have to build my own bed frame if I want it to fit the way I want it to fit!

Scooter...
My issue is that I have owned the ambo for over ten years and I hate to go back and change something that has worked for so long. However, I am beginning to find better ways to do things in my little space.


Sent from my iPhone using Tapatalk
 
Top