Mauldin MG622

Series: Mauldin Motor Grader

Source: https://www.wirtgen-group.com/ocs/ru-lt/john_deere/622gp-177

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The Mauldin MG622 belongs to the Mauldin Motor Grader series. The engine delivers 134.8 hp, with a displacement of 4,041 cm³. The wheelbase measures 5,282.2 mm. The tank holds 151.4 litres. The hydraulic tank holds 94.6 litres. The electrical system runs on 12 V. The engine fitted is the 2,012. Tyre size: 15,5-25. Rated output across the Mauldin range ranges from 18.2 to 134.8 hp; the MG622 sits at the top of that range with 134.8 hp. Its immediate neighbours are the 4000 below it with 18.2 hp. 8 Mauldin models across 4 series are on record. The model is listed under Motor graders. 11 verified figures from 1 source are on file.

Technical data

Engine

Engine model	2,012correct
Power	134.8 hpcorrect
Displacement	4,041 cm³correct
Aspiration	Turbocharged and aftercooledcorrect

Dimensions and weights

Length	8,345.4correct
Wheelbase	5,282.2correct

Drivetrain and chassis

Gearbox type	hydrostatic transmissioncorrect
Tyre size	15.5-25correct
System voltage	12 Vcorrect

Working data

Hydraulic oil capacity	94.6 lcorrect
Fuel tank capacity	151.4 lcorrect

Frequently asked questions

How much power does the Mauldin MG622 have?

The Mauldin MG622 delivers 135 hp.

What engine does the Mauldin MG622 have?

4,041 cm³ displacement.

What to check before buying

Check the hour meter against the service records — a replaced instrument is the most common gap.
Compare the data plate and chassis number with the papers.
Load the hydraulics and watch for sag.
Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 11 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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