Actros / SK 1990s

[sprocket3]

I think those are the lower (slow axles). I’m not sure though.

[Uwe]

We are talking about hub reduction axles, so 5,1 ist rather long. And since all Actros MP1 4x4 will have these axles, there is not much of an alternative - and these are mostly shorter

Uwe

[sprocket3]

We are talking about hub reduction axles, so 5,1 ist rather long. And since all Actros MP1 4x4 will have these axles, there is not much of an alternative - and these are mostly shorter

Uwe

Ok. I’m looking at an AK this week and trying to figure out if it will cruise at 100kph ok. It seems some of these trucks aren’t register so a test drive is a challenge.

[sprocket3]

https://youtu.be/KynjT9ZjWJ4?si=acqQFirR40vt4VsY

Are there higher gears than this truck has? Seems to be very Lowe geared.

[sprocket3]

Thank you. Do you think these are the “fast axles”?

The specs seem foreign to me compared to last truck that I wanted.

I don't know what a "fast axle" in a 1831 AK means.

What I know is:
- the gearbox has a "fast" high gear (0,83:1)
- axle diffs are 27:18 ratio (1,5)
- axle planetary gears are 3,4 ratio
- total axle ratio is 1,5 x 3,4 = 5,1

Pirx

Do you have any knowledge on changing the planetary gears? Is that something that can be done on these trucks?

I looked at the truck and it's running 2100RPM at 100Kph with the standard tires. I don't think that's good for driving long distances.

It also has the Trilex wheel system, which would need to be exchanged for standard wheels in my opinion.

Thoughts?

[Pirx]

Hi sprocket3!

Not 100% sure, but IIRC there are no planetary gears with a different ratio. The usual way to change the axle ratio ist to swap the differentials.

Anyway, in my opinion there ist no need to work on the axles. Just put on bigger tyres (14.00R20 should be great) and you are fine.

The Trilex wheel system could be with special axles designed for it or with standard axles and Trilex-Adapters. With the adapters, a change of the wheels should be no problem.

Pirx

[Borsty]

Otherwise you have only this possibility for change to Single. Trilex-Tublex Single Tire Switch.
This is the only safe way and no rim cut or anything. It's like Pirx writes. If it is a disc wheel rear axle then a Trilex adapter is installed. Otherwise a narrow trilex rear axle. These Parts to convert are not all longer available. Another Rims from US or Australia have not the same Angles and distances like GF from Europe. Looks the same, but it's not.
There are 3 different gear ratios for planetary sets( i have only for the outer Sun Wheel the 19 tooth and 25 tooth on my head), but not for every axle type. This would have been available for my axle, but not every part is available anymore.
Here too, the easier way and certainly available is what Pirx writes and you swap the differentials.
Greetz Uwe
Unfortunately I can no longer find the gear ratios for the 3 Types

[sprocket3]

Hi sprocket3!

Not 100% sure, but IIRC there are no planetary gears with a different ratio. The usual way to change the axle ratio ist to swap the differentials.

Anyway, in my opinion there ist no need to work on the axles. Just put on bigger tyres (14.00R20 should be great) and you are fine.

The Trilex wheel system could be with special axles designed for it or with standard axles and Trilex-Adapters. With the adapters, a change of the wheels should be no problem.

Pirx

I thought of the tires, but I think I can only gain about 10% which still puts truck cruising at nearly 1900. Seems like that’s near max RPM for engine.

[sprocket3]

Otherwise you have only this possibility for change to Single. Trilex-Tublex Single Tire Switch.
This is the only safe way and no rim cut or anything. It's like Pirx writes. If it is a disc wheel rear axle then a Trilex adapter is installed. Otherwise a narrow trilex rear axle. These Parts to convert are not all longer available. Another Rims from US or Australia have not the same Angles and distances like GF from Europe. Looks the same, but it's not.
There are 3 different gear ratios for planetary sets( i have only for the outer Sun Wheel the 19 tooth and 25 tooth on my head), but not for every axle type. This would have been available for my axle, but not every part is available anymore.
Here too, the easier way and certainly available is what Pirx writes and you swap the differentials.
Greetz Uwe
Unfortunately I can no longer find the gear ratios for the 3 Types

I’ve done differential gear changes on light duty trucks and it was a headache. What’s the cost on an SK for a well done diff change? Seems like something that could costs 15,000 euro.

[Borsty]

I don't know it. I never asked for the SK.
Ring and Pinion ask by Euroricambi.

[sprocket3]

Does anyone know the Trilex part number meaning?

The rear trilex center section has a part number on it of # 105496e. I think it's an E last digit. Hard to tell. Is this an adapter ring or it's the full trilex hub that needs to be dealt with.

The front is # 7868 which i think is just an adapter.

Sorry for all the questions. I'm trying to make a decision on this truck.

[Borsty]

Sorry for the late answer. Unfortunately the numbers don't mean anything to me
This is a Adapter from rear as example This is the Trilex rear wheel hub You can see that the hub is detached.
And this is the Adapter in Front You see the 10 bolts brake drum with the Adapter.
On page 217 you can see what they look like at Mercedes or MAN or Scania.
Many people don't recognize at first glance whether they are adapters or Trilex axles and some people barely know the system.
Greetz Uwe

[sprocket3]

Sorry for the late answer. Unfortunately the numbers don't mean anything to me
This is a Adapter from rear as example This is the Trilex rear wheel hub You can see that the hub is detached.
And this is the Adapter in Front You see the 10 bolts brake drum with the Adapter.
On page 217 you can see what they look like at Mercedes or MAN or Scania.
Many people don't recognize at first glance whether they are adapters or Trilex axles and some people barely know the system.
Greetz Uwe

Thank you so much for posting those photo. It's definitely got the Trilex Hub on the back. I think it's the adapter on the front though. I didn't take very good photos of the front when i was there.

Assuming this, what would be the budget to convert rear to standard hubs? I did a lot of reading and it sounds way more complicated that one would expect. Not just changing the hub.

[Borsty]

Thank you so much for posting those photo. It's definitely got the Trilex Hub on the back. I think it's the adapter on the front though. I didn't take very good photos of the front when i was there.

Assuming this, what would be the budget to convert rear to standard hubs? I did a lot of reading and it sounds way more complicated that one would expect. Not just changing the hub.

No Problem. So, i think you have a Swiss version with a width of 2.30m. In this case, the handlebar/push rod is also more bent so that the wheels have space at the front. What irritates me about the data card is the code R88 Tublex rims 8.25-22.5, narrow, for 12 R 22.5 sales but not the axle and the adapters.
Unfortunately, there is no longer any material available to swap to normal hubs and is very complicated. In addition to the hubs, the brake drums would also have to be replaced, etc. In terms of price, you can almost get a new axle. For single tires the only way is what I had done. Officially with papers and registered to the vehicle. A rim without a tire instead of a twin wheel is rubbish. In a pinch, yes, but not for a longer trip.
Greetz Uwe

[sprocket3]

Thank you so much for posting those photo. It's definitely got the Trilex Hub on the back. I think it's the adapter on the front though. I didn't take very good photos of the front when i was there.

Assuming this, what would be the budget to convert rear to standard hubs? I did a lot of reading and it sounds way more complicated that one would expect. Not just changing the hub.

No Problem. So, i think you have a Swiss version with a width of 2.30m. In this case, the handlebar/push rod is also more bent so that the wheels have space at the front. What irritates me about the data card is the code R88 Tublex rims 8.25-22.5, narrow, for 12 R 22.5 sales but not the axle and the adapters.
Unfortunately, there is no longer any material available to swap to normal hubs and is very complicated. In addition to the hubs, the brake drums would also have to be replaced, etc. In terms of price, you can almost get a new axle. For single tires the only way is what I had done. Officially with papers and registered to the vehicle. A rim without a tire instead of a twin wheel is rubbish. In a pinch, yes, but not for a longer trip.
Greetz Uwe

Well I don't think i should buy this truck now. I really need to be have Single rear tires and have a standard wheel system. Thank you very much for the help sorting this out. I had hopes that it was something that could be changed easily.

[Borsty]

I understand. Unfortunately, it's not easy and it's not cheap either. I went this route because I didn't want to get too wide and I liked the Trilex system firstly and secondly because it was easy to mount on wheel bolts without having to center the rim. I just have to turn the driver stop appropriately and this can be done very easily by hand when the wheel is resting on the Trilex adapter. No need to lift a lot of weight, everything is easy with the assembly levers and tubes that are part of the system. My intervertebral discs thank me. I would have been happy with a normal wheel system but with Trilex adapters. But the Trilex system was already anchored in my head.
Good luck with your further search. I would also extend this to Switzerland as good vehicles are always offered here at normal prices. For example
Greetz Uwe

[sprocket3]

I understand. Unfortunately, it's not easy and it's not cheap either. I went this route because I didn't want to get too wide and I liked the Trilex system firstly and secondly because it was easy to mount on wheel bolts without having to center the rim. I just have to turn the driver stop appropriately and this can be done very easily by hand when the wheel is resting on the Trilex adapter. No need to lift a lot of weight, everything is easy with the assembly levers and tubes that are part of the system. My intervertebral discs thank me. I would have been happy with a normal wheel system but with Trilex adapters. But the Trilex system was already anchored in my head.
Good luck with your further search. I would also extend this to Switzerland as good vehicles are always offered here at normal prices. For example
Greetz Uwe

Is there a good site that most of the trucks are listing on there? I have been using mobile.de and autline.com and thought that would pull the Switzerland trucks too.

[karussellbremser]

Hallo,

most notorious:
tutti.ch
ricardo.ch
basisfahrzeuge.ch

[Borsty]

Also in use
anibis.ch
autoscout.ch is the same its give in Germany
armyliqshop.ch It also has trucks from time to time. But here you have to send an offer and it's a risk because you can't look at the vehicles. There is usually a list of what exactly is broken, but this is not exhaustive. A lot of army trucks go to Germany or Holland.
HtH
Greetz Uwe

[sprocket3]

Well i just bought tickets to fly back to Europe for 30 days. Heading your way the 26th. I hope i have better luck this trip.

Let me know if anyone sees anything good.