HZJ75 Pump Truck Take Down-Utility/4x4 Build

[Cjryu92]

Sick build! Just removed the extra coolant piping that was in the bumper, what did you guys do with the extra outlet on the oil cooler cover? seems like extra coolant traveling through the oil cooler, is this necessary to replug back in somewhere? In the coaster and 80 series, this is blocked off, so can't be that crucial?

 

[lean2lux]

I didn't even plug mine with anything. Cause it was just water from the PTO pump that ran through it to cool it. cooling when the trucks engine is working hard while not moving. But I ran a small water line in the from that small port on the top of the radiator to the small port on the bottem. Or you could plug those.

 

[Cjryu92]

Thanks for that! yeah in the mean time i have plugged all those minor outlet pipes, but it sounds like it could be more permanent. Maybe down the line I can get an actually aftermarket HZJ79 rad.

 

[lean2lux]

Thanks for that! yeah in the mean time i have plugged all those minor outlet pipes, but it sounds like it could be more permanent. Maybe down the line I can get an actually aftermarket HZJ79 rad.

Yea I'll probably get a new rad someday. I saved the heat exchanger incase I ever wanna use WVO. It can be used to heat the veggie oil. I used to do that with another rig, but I don't have the hook up on oil anymore and got rid of the equipment.

 

[seatosummit]

Congrats on the 75! It’s a super fun process! Digging the look of the 35s.

The earliest a sounds cab 79 that I’ve seen can be imported is late 1999 model. I imported a 2001 that I’ve been slowly building out. I’ll attach a few pics.

The OME have been fantastic so far. Just make sure you choose the correct constant load springs and you’ll be set. They have options if your running a bumper and winch.

Good luck with the build!

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Wow - this is such a sweet set up. So does SET sell a 70 series specific tray, or is this a generic tray that you adapted?

 

[FJHunter]

This is my first time creating a thread and I am excited about sharing my new project. Mud has been a good resource to me throughout the years and I’m ready to potentially add to Mud and also gather even more insight throughout this build and I welcome opinions and ideas.

I am at the beginning of my journey with this HZJ75 fire truck build it started with finding a good platform as I had been waiting and searching for one with power steering. Finally, I found one about a month ago and I jumped on it, snagging it the morning it was posted. I didn't want to have to fuss with fitting PS. This truck has 5551 km on it and it definitely shows, as it is in mint condition. There is no way to know how many hours are on the motor as it is a pump truck used in stationary position while running the PTO in a water pump setup. But the motor runs strong and is very very clean. Haven’t done compression so got no info on that.


I have a lot more research to do on this idea I have for suspension, as this has been a new concept for me. My brother has some good info on a 60 build of his where ford and chevy springs were used 53” and I think 60" or something from the rears. I have to do my own measurements and figure all this out still. Cause after his rig was finished it drove like butter and had some amazing travel.

Here are my ideas/hopes so far:

-Remove pump station (hopefully sell the PTO pump to a local farmer in need? this thing is massive!)

-Build bed with bed rack for RTT ( I want flat bed that has fold up sides)

- add or change out to a 40+ gallon fuel tank

-Custom suspension with longer springs front and back, correct caster angle, cut and turn axle (I'm thinking possible shackle reversal for front during all this but would love to hear opinions on this idea)

-34ish" tires and 17" steel rims

-Air lockers front and back

-Front mount electric winch

-Thinking to bring PTO drive shaft back for industrial usage e.g. Wood chipper maybe splitter or possible Hydraulics to run such luxuries or anything else that seems fun

-Might do some gearing depending on how 34s feel

-Paint
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I recently got one of these and am planning to remove pump. How hard was it to find a buyer? How can they operate it independent of the truck? Want someone to get some use out of it. Thanks.