Unimog 404 bus conversion - Page 4

joeblack5 · 09-23-2021, 07:14 PM

A little bit further..replaced defective starter motor. Fault tested wiring..installed indicator lights for CEL, oil pressure, glow plug. Still missing a air intake temperature sensor. Had to modify a banjo fitting since it did not fit my fuel line diameter..
Hope tomorrow another try.

musigenesis · 09-23-2021, 07:19 PM

Hey Joe, have you ever heard of a Pinzgauer? There's one for sale near me for $8K and I'm possessed with an unreasonable urge to buy the thing but I don't know the first thing about them. They seem pretty similar to unimogs.

joeblack5 · 09-24-2021, 01:13 PM

Sorry, no experience, seems like a lot of fun. Is it a 6*6, diesel? Doubt they would devaluate .

Good luck,
Johan

musigenesis · 09-24-2021, 01:33 PM

Quote:

Originally Posted by joeblack5

Sorry, no experience, seems like a lot of fun. Is it a 6*6, diesel? Doubt they would devaluate .

Good luck,
Johan

It's the 4x4 with a gasoline engine. These are the pics I took of it: https://www.skoolie.net/forums/f11/r...tml#post453408

joeblack5 · 09-26-2021, 07:22 AM

Did some more wiring checking, installed fuel tank and fuel filter.. bled the fuel system with the hand pump. And it fired up.. satisfying feeling..

Unfortunately skoolie does not accept videos.

Oh well, on to the hydraulic clutch.

Johan

joeblack5 · 09-27-2021, 06:45 PM

Installed the VW master cylinder and rigged up a bracket and linkage. Reinstalled cab..the starter is a tight fit...to tight...will leave it for now..
Mocked up throttle pedal .

Ronnie · 09-27-2021, 09:27 PM

That sure is tight. Looks to be coming along good though.

joeblack5 · 09-30-2021, 06:57 PM

Thanks Ronnie, yes it is tight, will see if it runs when the frame is twisting
. I think I could shave another 1/4" off or modify the floor a bit.

Installed the coolant inlet and that is close to the bracket for clutch master cylinder..so another thing to modify..

Made a bracket for the throttle pedal.

The old engine used an oil bath filter. Not so great for diesels with possibilities of a runaway.. nice enough others had pioneered a paper filter inside the same housing.

Ronnie · 09-30-2021, 08:55 PM

I do know plenty of old diesels that still have an oil bath filter. Converting is a better idea though.

Did have a big cat run away on me last spring. What a mess, piston, rod, and even the liner went out the side of the block. Putting a Detroit in it's place. Might have it running this weekend.

joeblack5 · 10-03-2021, 08:53 PM

Wow. That must have been scary..sad and a shame...no way to block of the air inlet?
Something I need to consider as a safety feature.

Today I installed the electric power steering..or better assistance..the original unimog has a straight steering shaft . So the seat location is determined by that.. because I needed to make a lower steering shaft with two u joint I was able to relocate the steering wheel 1-1/2" towards the door.

Did some coolant hoses and refining the air inlet design for the TDI MAF sensor..

Ronnie · 10-04-2021, 04:47 PM

No way to block air or shut off fuel.

The detroit has an emergency air damper, and I added a fuel shutoff.

Love the old style switches on the dash.

joeblack5 · 10-05-2021, 04:22 AM

An air flap would be nice.. have to think a bit where. Probably nicest after the turbo or better after the intercooler.
Yes, I like the old switches as well. On my other unimog I did however change the dire tional blinker switch with an aftermarket truck handle on the steering column.

The scrapyard got some new trucks in.. need to check if any steering column switches are to be liberated.
Johan

joeblack5 · 10-11-2021, 08:55 AM

Made a bunch of holes in the cab for additional idiot light relative to this TDI...glow plug, oil pressure, Engine check light. Alternator light..

Modified the oil filter adapter so that the hoses point in a better angle..should have made an oil temp and oil pressure adapter on it at the same time..

All water hoses hooked up and filled with water.. oh yes plenty of leaks..some double hose clamps and that got resolved..

Did not install the intercooler but got a high end chrome pipe that loops the turbo to the intake manifold. Had to put a screw in it because the slip joint pulled apart..I guess the turbo builds pressure.

cadillackid · 10-11-2021, 06:32 PM

people claim if you spray a fire extuingisher in the intake it will displace enough oxygen the engine cant run but still not hydrolock it..

joeblack5 · 10-21-2021, 08:18 PM

Could not get the brakes to work and wanted to get the unimog out of the shop. Took it for a drive around in the yard. The power steering worked nice.. it smoked a bit ..a second try with the turbo disconnected had no smoke .. the turbo has 1mm axial play so I assume that the turbo needs new bearings.. so that will be the next step.. and the brakes if course..video clip

https://youtube.com/shorts/k2CUJAGZzVE?feature=share

joeblack5 · 11-15-2022, 02:12 PM

So ,this is a long time ago that there was any progress.
Many things have happened. As it goes, the bus became a storage shed for unrelated things. The unimog has gotten a VW TDI motor.

The last days I have removed the last connection between the chassis and the body of the girardin bus and have lifted the rear with the forklift.
Today I have made a lifting structure inside the bus so that the bottom of the bus is free to work on and also an attempt to make the lifting process more stable. The idea is to stick extended forks of a forklift thru the opened windows ànd lift it from à relative high location.. the wood structure is spreading the forces so that there will be no deformation of the body....I hope..

cadillackid · 11-15-2022, 02:36 PM

I would take the windows out. Even if you have to frame up with something else in those holes for stability where you pull the windows .. even the slight amount of deformation in the window frame and it either will no longer close at all or won’t seal right afterwords.. and with windows there’s no straightening then out to seal.. they just won’t.

Rucker · 11-15-2022, 07:06 PM

This has to be the most exciting/crazy/in-depth/bizarro build going.

My buddy around the corner picks up the odd vehicle. He has a Unimog as well--I would hesitate to sit in the cab of that thing for a long distance trip...but cool as hell.

joeblack5 · 11-23-2022, 07:20 PM

My brother came to visit and we decided that this was a good thing to tackle.
The old worn out hyster did start up after a lot of work.
Some parts of the bus body were still hanging on but after some grinder work we were able to lift the body of the chassis.

Tomorrow we will make an attempt to lower it on the unimog subframe.

Johan

joeblack5 · 11-28-2022, 08:56 PM

It all worked out and nobody got hurt. Next decision how to properly connect the body and the cab. The rear wheel wells can use some modification. They are nona bit far to the front but also have to enlarged because of the wheel width.
Then the rear panel in the cab of the mog has to come out and swivel chairs installed. Lots to do, first some welding .

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