Equipment Specifications Library

Basic Model Information

  • Manufacturer:
    Ditch Witch
  • Model:
    RT90

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Specs

Engine John Deere 4045DF150
Height 111 in
Length 148 in
Width 82 in

Additional Info

DIMENSIONS
Height: 111 in
Nose to rear mount length: 128 in
Length - transport: 148 in
Wheelbase: 73 in
Width: 82 in
Tread: 64 in

GENERAL
Ditch Witch model RT90 tractor, 4-wheel drive, rigid frame,
hydrostatic or powershift ground drive through rubber tires,
optional 4-wheel steering, hydrostatic attachment drive, riding unit.

OPERATION
Forward speeds
Low/Low: 0.6 mph
Low/High: 1.3 mph
High/Low: 4.4 mph
High/High: 9.4 mph
Reverse speeds
Low/Low: 0.3 mph
Low/High: 0.7 mph
High/Low: 2.9mph
High/High: 6.2 mph
Vehicle clearance circle
(SAE) wall to wall with backfill blade
Front steer only: 31 ft
Front and rear steer: 21 ft
Basic unit weight: 7980 lb
Backfill Blade
Blade width: 80 in
Blade height: 17 in
Lift height above ground: 21 in
Blade drop below ground: 11 in
Maximum swing angle (left/right): 30°
Tilt angle (up/down): 24°

POWER PLANT
Model: John Deere 4045DF150
Displacement: 276 cubic inches
Bore: 4.19 in
Stroke: 5.00 in
Engine manufacturer's gross power rating @ 2500 rpm: 85 hp
Maximum governed, no-load speed: 2650 rpm

POWER TRAIN
Ground drive transmission: hydrostatic or powershift
Differentials: planetary front and rear with optional rear steering
Service brake: Disc, foot operated
Parking brake: Disc, hand operated
Tires: 38X18.00-20 14-ply bar lug; inflate to 45 psi {3.1 bar}
Attachment drive transmission: hydrostatic, lever-operated speed infinitely variable
from zero to maximum, or powershift, with 2-speed control of forward and reverse

HYDRUALIC SYSTEM
Ground drive pump capacity @ 2500 rpm: 30.4 gpm
Ground drive pump relief pressure @ 2500 rpm: 5000 psi
Attachment pump capacity @ 2500: 36.3 gpm
Attachment pump relief pressure @ 2500 rpm: 6090 psi
Auxilliary pump capacity: 13 gpm
Auxilliary pump relief center: 2500 psi

FLUID CAPACITIES
Fuel Tank: 38 gal
Engine Oil: 9 qt
Hydraulic reservoir: 24 gal
Hydraulic system: 29 gal
Cooling system: 17 qt

BATTERY
Group 34H, SAE
Reserve Capacity - 120 minutes
SAE Cold Crank @ 0° F (-18° C) 800 amp
Auxilliary power outlet - 12 volt, 10 amp

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