Modding the Hymer ML-t 580 4x4

[Abgs]

MLT is now sending me abrupt messages ....

"You better turn off your Water Pump .... "

 

[Brains]

MLT is now sending me abrupt messages ....

"You better turn off your Water Pump .... "

View attachment 977468

Buy a spare in any case.
We are on our fourth one.
(2018 MLT 570)

 

[Abgs]

Buy a spare in any case.
We are on our fourth one.
(2018 MLT 570)

I'm looking at reconfiguring the pump system with an external Shurflo pump as the flow / pressure is pretty poor with the OEM set-up. Looks like it would about £120 - £150 in parts and a day of messing around getting it all to fit.

The Shurflo type set up in my previous Carthago was a massively superior water delivery system.

 

[Dutch 68]

Buy a spare in any case.
We are on our fourth one.
(2018 MLT 570)

 

[Lenny HB]

Looks like it would about £120 - £150 in parts and a day of messing around getting it all to fit.

How much!
Cost me about £60 when I did it on my Hymer.

^{_{Subscribers  do not see these advertisements}}

 

[Abgs]

How much!
Cost me about £60 when I did it on my Hymer.

I'd better double check my parts list first !

 

[Brains]

Buy a spare in any case.
We are on our fourth one.
(2018 MLT 570)

The Reich 19L/1.5bar pump is fine.
The first two went went through as our van was the demo model, and one thing everyone does is open the draws and check the taps.
Of course there would have been no water in the tank, so I guess the first two pumps were burnt out.
The third one lasted about 18 months

The current one I fitted in 2022, and it's still going fine.
I don't find any issues re pressure etc.

I always carry a spare pump!
I think I paid about £25 for the current spare in Austria a couple of years ago.
I see they are about £65 now in the UK !
(So it may be considerably cheaper to buy them on your next trip to the mainland)

 

[Brains]

I'm looking at reconfiguring the pump system with an external Shurflo pump as the flow / pressure is pretty poor with the OEM set-up. Looks like it would about £120 - £150 in parts and a day of messing around getting it all to fit.

The Shurflo type set up in my previous Carthago was a massively superior water delivery system.

Ahhhh,
But will it text you messages to say it's running hot ?

 

[Abgs]

Ahhhh,
But will it text you messages to say it's running hot ?

I'm wondering whether the interface between the water pump switch and the Hymer Connect can be fooled. The Hymer Connect panel has a touch screen on/off button for the pump.

Thinking, redirect the power supply to the existing pump to power a relay which would turn on /off the Surflo pump. That way I could turn the Surflo on and off using the Hymer touch screen and the iPhone app.

If that works .. then yes ... it would still send me a text based on "pump = powered on and tank water level = low".

Well that's the theory anyway ....

 

[Brains]

I'm wondering whether the interface between the water pump switch and the Hymer Connect can be fooled. The Hymer Connect panel has a touch screen on/off button for the pump.

Thinking, redirect the power supply to the existing pump to power a relay which would turn on /off the Surflo pump. That way I could turn the Surflo on and off using the Hymer touch screen and the iPhone app.

If that works .. then yes ... it would still send me a text based on "pump = powered on and tank water level = low".

Well that's the theory anyway ....

Don't fix what ain't broke

^{_{Subscribers  do not see these advertisements}}

 

[Buster30]

I had the same message a few weeks ago, pump wasn’t switched on, went in to check just in case, it wasn’t running or hot, tank had been drained though

 

[Abgs]

An excellent day of modding ….

External Bullfinch Gas Socket, SOG and Maxxair Fan all fitted.

Probably the easiest mods so far….

I dropped it off to Phil at Rhino Installs in Bamber Bridge at about 11 am and picked it up just after 3pm.

There was no existing roof cut-out to drop the Maxxair Fan into and I’m too chicken to cut holes, so I just relaxed and let the professionals handle it.

RhinoInstalls - Great company to deal with.

 

[Abgs]

It’s a Hymer so it’s bound to have an intermittent annoying rattle from somewhere in the cab….

My best guess was a cable was knocking around loose in the over-cab area as the noise seemed to be coming from behind the speaker panel.

To access the void; firstly I popped the Mercedes overhead console out. This is a very simple operation, just slide a credit card in between the front edge of the console and the headlining, and it literally pops out.

Next I removed the speaker panel trim which is held in by 10 plastic push fittings. It’s a case of carefully working the panel off. Then remove the speakers.

The source of the rattle was immediately obvious.

Hymer have no concept of cable management, why use a 5p self adhesive fitting to stop a cable rattling when you can randomly bung a bit tape somewhere near the cables and just hope that works?

I’ve added some foam sound deadening to the rear of the speaker panel so there is no hard surface for the cables to rattle against, and a few cable clips.

While had access to the void I also added some insulation material.

 

[Abgs]

Here's another picture of Hymer cable management - this is under the wardrobe floor.

 

[Googlebot]

Here's another picture of Hymer cable management - this is under the wardrobe floor.

View attachment 980946

That’s a bit sloppy considering the cost.

^{_{Subscribers  do not see these advertisements}}

 

[Dutch 68]

Here's another picture of Hymer cable management - this is under the wardrobe floor.

View attachment 980946

That is shocking, send some photos to their CEO, maybe he likes to explain it to his customers

 

[Antl]

What a fantastic thread. I am about to purchase a MLT Crossover.

I am not sure I will be taking mine apart quite yet.

 

[Lenny HB]

Don't knock Hymer wiring, if maybe untidy but you can get at it.

Carthago on the other is all neatly cable tied in place in very unaccessible places under the floor. A nightmare when you are modding the van.

 

[JoeM]

Inspired by LennyHB … I thought I’d start a post to details various mods and upgrades.

I have a brand new Hymer Mlt 580 sitting on my drive waiting for a DVLA to assign a registration number. In the meantime, of course I’m going to take take it apart, fettle and modify it …..

Firstly …. Hymer, why no front mudflaps? Genuine Mercedes parts are £75 a pair, could you not include them as standard?

Anyhow, an easy install as all the fitting points are present and line up perfectly.

Ten minutes per side and a great improvement both practically and visually. Should also save the habitation step mechanism from getting covered in mud.

Part Number: Mercedes-Benz Mud flaps Sprinter 907 front set A9078890600.

View attachment 956641View attachment 956642

Great post! I’m definitely going to add mud flaps to ours.

 

[Abgs]

Amplo Levellers fitted today ….

Thanks to the good people at TowTal in Stoke on Trent … they answered my many pre-sale questions, invited me over to see an install in progress and a gave full demo before I ordered the system.

As the AWD Hymer sits high they had to fit the extra long hydraulic rams. The central pump system sits centrally underneath the body but tucked up high and shielded by a metal cover. The main control panel is in the passenger seat base, but once powered on the handheld bluetooth remote handles most functions.

I dropped the van off on Thursday and picked in up the following day. On collection they put the van back on the ramps so I could inspect and photograph the install. They then talked me through all the components, wiring and pipe locations.

The van is now at home with the legs in parked up mode i.e. jacks down, just taking the weight off the suspension but not levelled out. I can pin code this option so that the jacks can’t be raised without entering the 4 digit passcode - handy bit of extra security.

Hopefully that’s the last of the expenditure …

^{_{Subscribers  do not see these advertisements}}

 

[Buster30]

How do they compare price wise to the competition, I know that E and P are just over £6000