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American Water Works

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Caked mud and green concrete on machines your mechanic can't even inspect

What you see

Loaders and excavators come back packed with mud around the tracks and undercarriage. Concrete trucks and tools carry a crust that gets harder every day nobody gets to it.

Why it happens

Packed mud takes flow to move, and the grease under it takes heat. A small cold-water machine has neither, so someone stands there for an hour per machine. Concrete comes off cleanest while it's still green, before it sets, and that takes the right product more than more pressure.

What it does to you

A mechanic can't see a cracked weld or a weeping seal under a layer of dirt, so small repairs turn into downtime. Rented equipment that goes back dirty can come back to you as a cleaning charge, and the crew loses the end of every shift to the wash.

The shop asks what machines you wash and how many, and whether the wash happens at the yard or on the jobsite. It asks what water and power you have at that spot, whether it's mud or concrete that's caked on, and how long a machine takes today.

On a jobsite with no water, a trailer rig carries its own: the Alkota 8405HNL puts out 8 GPM at 3500 PSI on a Honda GX690, and on the UTT460 it rides with 460 gallons and electric brakes. At the yard, the Hotsy HSS is a self-contained skid on a Kubota diesel, 5.0 to 9.5 GPM, and the Hotsy 1200 is a gas-engine hot-water machine at 4.5 to 5.6 GPM, both per the manufacturer's 2016 brochure. If it's mostly mud and no grease, a cold-water belt-drive like the Hotsy BD reaches up to 5000 PSI.

For concrete, Con-B-Gone is made to take green concrete off trucks and tools. Ripper I is the degreaser for oily iron.

Alkota 8405HNL hot-water machine on a UTT460 tandem-axle trailer with a 460-gallon tank

What the shop would start with

Hotsy HSS / HSDS Series

Maker
Hotsy
PSI
2,500 to 3,500
GPM
5.0 to 9.5
Heat
diesel
Power
Kubota Z602 or D1105 diesel engine (16 or 24 HP, Tier IV), electric start
Warranty
Pump 7 years; heater coil 5 years, non pro-rated (per the 2016 brochure)
Quoted on the call

Hotsy 1200 Series

Maker
Hotsy
PSI
3,000 to 4,000
GPM
4.5 to 5.6
Heat
oil
Power
Briggs Vanguard 16/21 or Honda GX630 gasoline engine
Warranty
Pump 7 years limited; heater coil 5 years (per the 2016 brochure)
Quoted on the call

Hotsy BD Series

Maker
Hotsy
PSI
3,000 to 5,000
GPM
3.4 to 4.5
Heat
none
Power
Honda GX390/GX630/GX660 or Vanguard 16 gasoline engine, or Kohler diesel
Warranty
Pump 7 years (per the 2016 brochure)
Quoted on the call
AWW-HDS8 on the UTT460 tandem axle, photographed by Universal Trailer

AWW-HDS8 · UTT460

GPM / PSI
8 GPM
Engine
25 HP Kärcher V-twin, gas and diesel tanks
Tank
460 gal, Tandem 3,500 lb drop axles
From $18,088Published price, Oct 23, 2026
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Tell us what's going wrong

Caked mud and green concrete on machines your mechanic can't even inspect

A dead burner, a citation, a bid due Friday. Your words.
How do we reach you? A phone or an email is enough.
A few more questions (optional)
Downtime, labor, a lost bid. A rough idea is fine.
Brand, model, age if you know it.

Here's what happens next: The Pacoima counter calls you within one business hour. The call is 15 minutes. We ask what's going wrong, how you plan to pay, and who else weighs in. At the end we set a next step, or tell you straight that we're not the right shop. Nobody pitches anything until we understand the job.

Rather just talk? Leave a number.
A dead burner, a citation, a bid due Friday. Your words.
How do we reach you? A phone or an email is enough.

Here's what happens next: The Pacoima counter calls you within one business hour. The call is 15 minutes. We ask what's going wrong, how you plan to pay, and who else weighs in. At the end we set a next step, or tell you straight that we're not the right shop. Nobody pitches anything until we understand the job.