Engine:
The 4-cycle, 3-cylinder, overhead valve
Mitsubishi diesel engine Model K3D is water cooled
and delivers 24.99 HP (18.6 kW) @3,600 rpm.
Cylinder bore is 2-7/8 in. (73 mm), stroke is 3- 1/16 in.
(78 mm) and displacement is 59.7 cu. in. (979 cc).
Compression ratio is 23:1. Crankcase oil capacity with
filter is 3.7 qt. (3.5 L). The filter is a full-flow, replace-
able, screw-on type. Mechanical centrifugal type gov-
ernor limits maximum no-load engine speed to 3,200
+/- 50 rpm. Idle speed is 1,500 +/- 50 rpm. Glow plug
is installed in each cylinder for starting assist.
Air Cleaner:
Heavy-duty, remote mounted.
Muffler:
Volume equal to approximately six times
engine displacement for excellent silencing. A park
arrestor is incorporated with the muffler.
Cooling System:
The radiator has a tube and fin con-
struction with the hydraulic oil cooler in the lower tank.
Cooling system capacity is approximately 6 quarts (5.7
L) of a 50% mixture of permanent, ethylene glycol anti-
freeze and water. The radiator is equipped with a 15 psi
(103 kPa) pressure cap and the engine has a 170° F
(76.5° C) thermostat.
Electrical:
The 12-volt battery has 550-amp. cold
cranking performance at 0° F (18° C), and a 12-volt
negative ground, 35-amp. alternator with regulator for
charging battery. An electric solenoid on the injection
pump operates a shut-off device to stop fuel flow, there-
by stopping the engine. A 40-amp. manual reset circuit
breaker protects the electrical wiring.
Fuel System:
The fuel tank holds 8-1/2 gal. (32 L) of
No. 1 or 2 automotive type diesel fuel oil, per SAE
J313c spec. 12-volt, electric (transistor type), fuel pump
with replaceable filter mounted on the frame. The fuel
filter/water separator with a replaceable cartridge is
mounted on the frame.
Front Axle:
The heavy-duty Dana GT 20 axle has a
reduction of 20.9:1. The axle has an automotive type
differential, bevel gear pinion and ring gear with a spur
gear reduction from the transmission. All axle compo-
nents are mounted in tapered roller bearings.
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Transmission:
A Sundstrand in-line hydrostatic trans-
mission is mounted directly to the front axle and driven
by flexible drive couplings. Operating pressure is 500
to 3,000 psi (3,447 to 20,685 kPa) and normal charge
pressure is 70 to 150 psi (453 to 1,034 kPa). The
implement relief valve setting is 700 to 900 psi (4,826
to 6,205 kPa). Displacement is 0.913 cubic inch (15
CM3) per revolution, and the transmission is controlled
by a foot-actuated pedal. The front axle is the hydraulic
fluid reservoir, and its capacity is 5 quarts (4.7 L) of
SAE 10W-40 SF/CC or CD engine oil. The 25-micron
hydraulic oil filter is a screw-on replaceable type. For
replacement filters, order Toro part number 67-8110.
Ground Speed:
Speed is infinitely variable from 0 to
9.5 mph (0 to 15 km/hr) forward and reverse.
Tires:
The two rear tires are 16 x 6.50-8, 4-ply rating
rib, on demountable, drop center wheels. The two front
tires are 23 x 8.50-12, extra traction tread, 4-ply rating,
on demountable, drop center wheels. Recommended air
pressure for both the front and rear tires is 12 psi (83
kPa).
Brakes:
The brakes are controlled by 3 pedals. Two
are for the steering assist and are individually controlled
by your left foot. The third pedal operates both brakes;
it is controlled by either foot. A parking brake latch is
provided for third pedal. The pedals are connected to
the brakes by multi-stranded cable and conduit.
Steering:
The 15-inch (38 cm) steering wheel is mount-
ed on steering valve consisting of a control valve and
metering section which regulates pressure and meters
flow to the steering cylinder. Minimum turning radius
is 18 in. (46 cm) from center of turn to closest side of
drive wheel; however, zero turning radius results when
individual wheel brakes are used. Steering wheel
adjustable fore and aft for operator comfort.
Main Frame:
The frame is welded, formed steel, rein-
forced with square and rectangular tubing.
Interlock Switches:
PTO (Power Take Off) Switch—
Shuts the engine off when the PTO is engaged with no
operator on the seat. Traction Switch—Shuts the
Specifications
