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Gauges. When should I check the gauges? At start up Regular intervals during operation When changes occur in normal sounds of operation. http://web.utk.edu/~tprather/FoothillsTractorClub/Pictures/2000_HomecomingShow/Oliver_Super77_dash.jpg. Instruments. Common instruments used:
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Gauges • When should I check the gauges? • At start up • Regular intervals during operation • When changes occur in normal sounds of operation http://web.utk.edu/~tprather/FoothillsTractorClub/Pictures/2000_HomecomingShow/Oliver_Super77_dash.jpg
Instruments • Common instruments used: • Engine Speed Indicator (Tachometer) • Oil Pressure Indicator • Engine Temperature Indicator • Fuel Gauge • Air Filter Condition Indicator • Transmission Temperature Indicator • Hydraulic System Oil Level Indicator • Hour Meter • Charge Indicator http://product-image.tradeindia.com/00306979/b/Hour-Meter-Electronics.jpg
Tractor Controls • Color coding for controls: • Stop Engine—RED • Ground Motion—ORANGE • Power Engagement—YELLOW • Positioning and Adjusting—BLACK
General Rules for Moving Controls • When using a foot brake, push it in; When using a hand brake, pull up. • A foot clutch is disengaged when it is pushed in and engaged when let up • Hand operated engine controls (throttles) increase engine speed when moved upward or forward. Foot operated throttles increase speed when pushed forward or downward by toe pressure
General Rules for Moving Controls • Direction of tractor is controlled by specific forward and reverse gears or by directional controls. If a hand operated direction control is used, the tractor moves in the same direction as the control is moved. • The engine stop control is by key and by mechanical push-pull control. A key is always turned counterclockwise to stop an engine. A push-pull lever is always pulled out to stop the engine. • Controls that lift or lower attachments or implements are generally pushed forward, down, or away for lowering, and pulled back, up, or toward you for lifting. • A PTO is usually engaged when pulled up or pushed forward.
RED—Stop Engine Gasoline Engine—Red letters on key switch Diesel Engine—Red fuel shut-off switch *Most diesel engines are shut off with the fuel shut-off switch, not by the ignition key*
RED—Stop Engine • Rules for RED: • Be within 6 inches of the key switch • Be pulled to stop • Be labeled “Pull to Stop Engine” • Remain in the stop position without continued effort http://abe.sdstate.edu/hosta/index_files/Task%20Sheets/4.5.1%20Engine%20Stop%20Controls.pdf
ORANGE—Ground Motion • Ground Motion Controls Include: • Engine Speed • Transmission Controls • Parking Brake or Park-Lock • Independent Emergency Brakes • Differential Lock
ORANGE—Ground Motion • Rules for ORANGE: • Engine speed controls are operated with right hand and/or right foot • Transmission gearshift patterns must be clearly and permanently identified • Differential lock controls are engaged with a forward or downward motion • Brake locks may be a mechanical lock on the drive train versus a lock on the axle. http://abe.sdstate.edu/hosta/index_files/Task%20Sheets/4.5.2%20Ground%20Motion%20Controls.pdf
YELLOW—Power Engagement • Power Engagement – Type Controls Include: • PTO • Cutterheads • Feed Rolls • Elevators • Winches • Unloading Augers
YELLOW—Power Engagement • Rules for YELLOW: • PTO controls designed to move to the rear or downward to disengage the PTO • Horizontal-mounted rocker switches use the right side to begin normal machine operation • Vertical-mounted rocker switches use the upper side of the switch to begin normal machine operation http://abe.sdstate.edu/hosta/index_files/Task%20Sheets/4.5.3%20Power%20Engagement%20Controls.pdf
BLACK—Positioning and Adjusting • Positioning and Adjusting Controls Include: • Remote Hydraulic Control • Implement Hitches • Unloading Components on Self-Propelled Equipment • Engine Chokes and Steering Column Position • Lights, Flashers, and Signals • Cab Comforts (Fans, Radios, Etc.)
BLACK—Positioning and Adjusting • Rules for BLACK: • Lift controls operated from the tractor seat must be clearly identified and are found on the right side of the cab. • Front-end loader controls must be located on the right side of the operator. • Foot controls must be pushed forward to lower equipment. http://abe.sdstate.edu/hosta/index_files/Task%20Sheets/4.5.4%20Positioning%20and%20Adjusting%20Controls.pdf
Control Devices and Functions • There are three common types of control devices used on tractors: • Foot Controls—Pedals • Hand Controls—Levers, Toggles, Switches, Knobs, and Buttons • Combination Hand and Foot—Engine Throttles
Tractor Operation Symbols Diesel Fuel Oil Seat Belt Oil Change & Grease Point Alert (malfunction)
Engine Speed Oil Pressure & Ammeter Malfunctions Engine Coolant Throttle Symbol High Lift Bucket--Tilt PTO Recommended Lift Point High Lift Bucket--Raise
Clutch Engage Control Function Disengage Control Function