Lanz Bulldog D7531

The Lanz Bulldog D7531 is a tractor produced by Lanz. It is equipped with a 286.8 ci 4.7 L engine. The listed engine power is Diesel (listed): 24.5 hp / 18.3 kW. Transmission: gear. Drive type: 2WD.

Engine Power

Diesel (listed): 24.5 hp / 18.3 kW

Drive & Traction

2WD

Fuel & Capacities

Diesel

Transmission

gear

Overview

	1935 - 1952 D75 Series

Production
Manufacturer	Lanz
Built in Mannheim, Baden-Württemberg, Germany

Variants
D7500	3-speed
D7506	6-speed
D7507	6-speed, with starter
D7511	combination for both field and road operations, front-axle springs
7521	traffic model for road operations
7531	express model with high-speed gearing

Lanz D7531 Engine
Lanz 4.7L 1-cyl diesel
Engine details ...

Lanz D7531 Transmission
6-speed
Transmission details ...

Lanz D7531 Power
Engine	24.5 hp 18.3 kW

Mechanical
Drive	2WD

Dimensions & Tires
Full dimensions and tires ...

Engine

Engine Detail — 286.8 ci / 4.7 L Diesel

Manufacturer	Lanz
Fuel Type	Diesel
Configuration	1-cylinder, liquid-cooled
Displacement	286.8 ci 4.7 L
Bore/Stroke	6.693x8.268 inches 170 x 210 mm
Power	24.5 hp 18.3 kW
Rated RPM	850

Transmission

Transmission — gear

Transmission	gear
Gears	6 forward

Dimensions

Lanz D7531 Tires

Dimensions

Photos

Lanz Bulldog D7531 tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Lanz Bulldog D7531 based on its 24.5 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Lanz Bulldog D7531.

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours