LeeBoy 685B

Series: LeeBoy Motor Grader

Source: https://www.leeboy.com/products/685d/

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The LeeBoy Motor Grader series from LeeBoy includes the 685B. The engine delivers 111.5 hp, with a displacement of 3,900.1 cm³. The engine comes from 4B3.9. Rated speed is 2,500 rpm. The machine is 6,602 mm long. Ground clearance is 335.3 mm. The tank holds 151 litres. The hydraulic tank holds 121.1 litres. Working pressure is 310.3 bar. The cooling system holds 21.2 litres. The electrical system runs on 12 V. The engine fitted is the Cummins. Tyre size: 15/38,5-15. Rated output within this group ranges from 76 to 540.4 hp; the 685B sits at the bottom of that range with 111.5 hp. Its immediate neighbours are the RG100 below it with 102.4 hp and the MG230-E above it with 116.6 hp. The model is listed under Motor graders. 13 verified figures from 1 source are on file.

Technical data

Engine

Engine make	4B3.9correct
Engine model	Cumminscorrect
Power	111.5 hpcorrect
Rated speed	2,500 rpmcorrect
Displacement	3,900.1 cm³correct
Coolant capacity	21.2 lcorrect

Dimensions and weights

Length	6,602correct
Ground clearance	335.3correct

Drivetrain and chassis

Tyre size	15/38.5-15correct
System voltage	12 Vcorrect

Working data

Hydraulic oil capacity	121.1 lcorrect
Hydraulic pressure	310.3correct
Fuel tank capacity	151 lcorrect

Frequently asked questions

How much power does the LeeBoy 685B have?

The LeeBoy 685B delivers 112 hp.

What engine does the LeeBoy 685B have?

3,900 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 13 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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Sources: [1]

Grader in 3D section

Turn the model, look inside and click an assembly — each one is explained.