Gravely Pro Master 30-H

The Gravely Pro Master 30-H is a tractor produced by Gravely Lawn Tractors. It is equipped with a 1362 cc 83.1 ci engine. The listed engine power is Diesel (gross): 30 hp / 22.4 kW. Transmission: Sundstrand 15U. Operating weight: 460 lbs 208 kg.

Engine Power

Diesel (gross): 30 hp / 22.4 kW

Fuel & Capacities

10.6 gal 40.1 L

Transmission

Sundstrand 15U

Operating Weight

460 lbs 208 kg

Overview

	1989 - 1991 Front-mount mower

Production
Manufacturer	Gravely (a part of Ariens)
Front-mount mower

Gravely Pro Master 30-H Engine
30HP Yanmar 1362cc 3-cyl diesel
Fuel tank	10.6 gal 40.1 L
Engine details ...

Gravely Pro Master 30-H Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Drum brakes
Open operator station.

Power Take-off (PTO)
Front PTO	independent
Clutch	disc

Dimensions & Tires
Wheelbase	48 inches 121 cm
Weight	1400 lbs 635 kg
Front tire	23x10.5-12
Rear tire	16x7.5-8
Full dimensions and tires ...

Electrical
Ground	negative
Charging amps	40
Battery volts	12

References

Riding Tractors published in 1990, by Gravely

Engine

Engine Detail — 1362 cc / 83.1 ci Diesel

Manufacturer	Yanmar 3TN82E
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled inline
Displacement	1362 cc 83.1 ci
Bore/Stroke	3.22x3.39 inches 82 x 86 mm
Power (gross)	30 hp 22.4 kW
Starter	electric
Starter volts	12
Oil capacity	5 qts 4.7 L

Transmission

Transmission — Sundstrand 15U

Transmission	Sundstrand 15U
Type	hydrostatic
Gears	infinite forward and reverse (2-range)
Oil capacity	8 qts 7.6 L

Dimensions

Gravely Pro Master 30-H Tires
Lawn/turf front	23x10.5-12
Lawn/turf rear	16x7.5-8

Dimensions
Wheelbase	48 inches 121 cm
Length	86 inches 218 cm
Width	48 inches 121 cm
Height	55 inches 139 cm
Weight	1400 lbs*Weight of tractor alone. 635 kg

Attachments

72" Mower deck
Type	front-mount Gravely
	3-blade with hydraulic lift
Cutting width	72 inches 182 cm
Weight	460 lbs 208 kg
Cut height	1.5 to 4.5 inch 3 to 11 cm

Photos

Gravely Pro Master 30-H tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Gravely Lawn Tractors Gravely Pro Master 30-H based on its 30 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	5 ft (60 in)1.5 m	Medium Duty	Pasture maintenance and weeds up to 1.5" diameter.
Rotary TillerSeedbed Prep	54 to 60 in135 - 150 cm	Medium Duty	Thorough seedbed preparation in orchards and vegetable plots.
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 Gravely Lawn Tractors Gravely Pro Master 30-H.

Estimated Continuous Field Runtime: 6.8 hrs

Approximately 6.8 hours of continuous field operation at ~75% rated power on a full tank (10.6 gal / 40.1 L).

Estimated 75% Load Fuel Burn~1.6 gal/hr (5.9 L/hr)

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

Gravely Lawn Tractors Gravely Pro Master 30-H Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Gravely Lawn Tractors Gravely Pro Master 30-H.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)30 hp

Kilowatts (kW)22.4 kW

Metric Horsepower (PS / CV)30.4 PS

Direct Competitor Comparison

Compare Gravely Pro Master 30-H against same-era industry alternatives in the same horsepower class.

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