Scag Power Equipment STT-28CAT manual Specifications, Engine, Electrical, Power head

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Section 3

 

 

SPECIFICATIONS

3.1 ENGINE

 

 

General Type

Heavy Duty Industrial/Commercial Diesel

Brand

CAT 28HP Diesel

Model

C1.1

Horsepower

28 HP at 3200 RPM (Model STT61V-28CAT-SS, STT-28CAT-SS)

Type

4 Stroke Diesel, 3 Cylinder, Horizontal Shaft, Liquid-Cooled

Displacement

1.13L.

Cylinders

3

Governor

Mechanical Type with Variable Speed Control Set At 3200 RPM

Idle Speed

1200 RPM

Fuel Pump

Electric Fuel Pump with in-line filter

Fuel

Diesel Fuel with a minimum cetane rating of 40

Oil Pump Group

Pressure Lube, 5.2 U.S. Quarts with Oil Filter

Starter

Electric Starting with Solenoid Shift Starter

Belts:

Kevlar cord. Self-adjusting, Self-tightening

Deck Drive Belt

Scag Part Number - 481460

Pump Drive Belt (29HP & Higher)

.................................................................................... Scag Part Number - 483735

3.2 Electrical

 

 

Battery

12 Volt, Maintenance Free (525CCA)

Charging System

Alternator

Charging Output

12 Volt, 40 Amp

System Polarity

Negative Ground

Starter

12 Volt Electric Ring Gear Type, Key and Solenoid Operated Interlock

Switches

Seat, Neutral Control, Mower Engagement (BBC), Parking Brake

Instrument Panel

Volt Meter, Key Switch, Throttle Lever, BBC Switch, Temperature Gauge,

 

 

Fuses, Safety Start Module, Oil Pressure Gauge, Glow Plug Indicator

Fuses

Two (1) 20 Amp, (1) 50 Amp Resettable

3.3 power head

 

 

Drive System

Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-iron High Torque Motors

Hydrostatic Pumps

Two Hydro-Gear™ BDP 16A Pumps with Dump Valves for

 

 

movement without running the engine and pressure relief valves

Drive Wheel Motors

Two Hydro-Gear Model 18E, 18 cu. Inch Cast-Iron High-Torque Motors

Steering/Travel Control

Twin Lever Fingertip Steering Control with

 

 

Individual Control to Each Wheel with Gas Spring Dampers

Parking Brake

Lever Actuated Linkage to Brakes on Both Drive Wheel Axles

Wheels:

 

 

(2) Front Caster

13 X 6.00 Four Ply

(2) Drive

24X12.0X12 Four-Ply Pneumatic Tubeless, Radius Edge, 61" & 72"

Tire Pressure:

 

 

Front Caster

Flat Free

Drive

12 PSI

Fuel Tank

10-Gallon Seamless Polyethylene Tank with large opening and Fuel Gauge Fill Cap

Seat

Padded, Suspension Seat

Travel Speed:

 

 

Forward

0-12

Reverse

0-6 MPH

-NOTE- The machine will travel at 12mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions.

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Contents OPERATOR’S Manual Remember Your Mower is only AS Safe AS the Operator Table of Contents Limited Warranty Commercial Equipment Inside Back CoverDirection Reference General InformationIntroduction Servicing The Engine and Drive TraiN ComponentsSymbols Symbol DescriptionBefore Operation considerations Safety InformationSignal Words Operation Considerations Section Roll-over protection system Foldable Roll-Over Protection SystemSeat Belt Inspection Maintenance Considerations & storage Safety and Instructional Decals Diesel Fuel onlyEngine SpecificationsPower head ElectricalHydraulic System Weights and DimensionsCutter Deck SMT61V SMT72VOperating Instructions Controls and Instrument IdentificationSafety Interlock System Dump Valve ControlForward Travel Starting the EngineGround Travel and Steering Engaging the Deck Drive Cutter Blades Reverse TravelAfter Operation Hillside OperationParking the Mower Removing Clogged MaterialRecommendations for Mowing Adjusting Cutting HeightMoving Mower with Engine Stopped Adjusting the Height Adjust Pedal Adjusting the Steering LeversTowing optional hitch accessory Troubleshooting Cutting Conditions Condition Cause CureTroubleshooting Cutting Conditions Contd Scalping Blades Hitting Adjustments Parking Brake AdjustmentTravel Adjustments Neutral AdjustmentTracking Adjustment Throttle Control and Choke AdjustmentsBelt Adjustment Cutter Deck Level Cutter Deck AdjustmentsBelt Alignment Cutter Deck PitchCutter Deck Height Cutter Deck StopCustom-Cut Baffle Adjustment Custom-Cut Baffle AdjustmentMaintenance Maintenance Chart Recommended Service IntervalsMaintenance Chart Recommended Service Intervals Contd LubricationSection Checking Hydraulic Oil Level Changing Hydraulic OilEngine Oil Engine Fuel SystemCleaning and/or Replacing Air Cleaner Element BatteryEngine Air Cleaner Replacing In-Line Fuel Filter ElementsCutter Blades Charging the BatteryDrive Belts Blade InspectionBlade Sharpening Blade ReplacementTires Checking Lubricant Level Cutter Deck GearboxCooling System Changing LubricantChecking The Fan Belt Tension Cleaning the Radiator Debris ScreenBODY, DECK, and Upholstery Illustrated Parts List Scag Approved Attachments and AccessoriesSection 61V & 72V Cutter Deck Description Cutter Deck Controls 481764 Link, Deck Lift Sheet Metal Components Sheet Metal Components Section STT ROLL-OVER Protection System with Suspension Seat 9292 Deck Drive Components Deck Drive Components Section Engine & Attaching Parts 28HP Cat diesel Section Engine & Attaching Parts 28HP Cat Diesel Section Radiator & Attaching Parts 28HP Cat Diesel Radiator & Attaching Parts 28HP Cat Diesel Brake and Steering Components Brake and Steering Components Section Fuel and Hydraulic System 28HP Cat Diesel Section Fuel and Hydraulic System 28HP Cat Diesel Section BDP-16A Hydraulic Pump Assembly with Cooling Fan Hex Screw, Flanged Head M10 x 1.50-65mm Section Electrical System 28HP Cat Diesel Electrical System 28HP Cat Diesel Heavy-Duty Commercial Sttkbd Decals Page2 Section Electrical Schematic 28HP Cat Diesel Limited Warranty Commercial Equipment