Scag Power Equipment STT-31BSG manual Hydraulic System, Checking Hydraulic Oil Level

Page 33

Section 7

7.3 HYDRAULIC SYSTEM

A. Checking Hydraulic Oil Level

The hydraulic oil level should be checked after the first 10 hours of operation. Thereafter, check the oil after every 200 hours of machine operation or monthly, whichever occurs first.

- I M P O R TA N T-

If the oil level is consistently low, check for leaks and correct immediately.

1.Wipe dirt and contaminants from around the reservoir cap. Remove the cap from the hydraulic oil reservoir.

2.Visually check the level of hydraulic oil. Hydraulic oil must be at least 3-1/4" inches from top of the filler neck. If the level cannot be determined visually, use a clean tape measure to check the level. If the fluid is low, add 20W50 motor oil. DO NOT overfill; (overfilling the oil reservoir may cause oil seepage around the cap area).

3.Clean the fill cap and install it onto the reservoir.

B. Changing Hydraulic Oil

The hydraulic oil should be changed after every 500 hours or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black or milky. A black color and/or a rancid odor usually indicates possible overheating of the oil, and a milky color usually indicates water in the hydraulic oil.

-NOTE-

The hydraulic oil should be changed if you notice the presence of water or a rancid odor to the hydraulic oil.

1.Park the mower on a level surface and stop the engine.

2.Place a suitable container under the hydraulic oil reservoir. Remove the fill cap from the reservoir. Remove the drain plug from the bottom of the reservoir. (See Figure 7-2). Allow the fluid to drain into the container and properly discard it.

3.Re-install the drain plug into the reservoir and be sure it is tight.

 

-NOTE-

 

Before refilling the hydraulic oil reservoir

 

the hydraulic oil filter should be changed as

 

outlined in section C on the next page.

 

4. Fill the reservoir to 3-1/4" inches from the top of the

 

filler neck with 20W50 motor oil.

 

5. Replace the reservoir fill cap. Start the engine and

 

drive forward and backward for two minutes. Check

 

the oil level in the reservoir. If necessary, add oil to

Hydraulic Oil￿

the reservoir.

Reservoir

 

STT99HOR-1

 

Figure 7-2 Hydraulic Oil Reservoir

 

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Contents OPERATOR’S Manual Remember Your Mower is only AS Safe AS the Operator Table of Contents Table of Contents Contd Introduction General InformationDirection Reference Servicing the Engine and Drive Train ComponentsISO Symbols CE Mark Fast Slow Before Operation Considerations Safety InformationOperation Considerations Before Operation Considerations ContdOperation Considerations Contd Maintenance ConsiderationsSafety and Instructional Decals Engine Engine DeckDrive System Additional Specifications SpecificationsApproximate Dimensions ProductivityControls and Instrument Identification Operating InstructionsDump Valve Control Safety Interlock SystemStarting the Engine Ground Travel and SteeringForward Travel Engaging the Deck Drive Cutter Blades Reverse TravelHillside Operation Parking the MowerAfter Operation Removing Clogged Material Moving Mower with Engine StoppedRecommendations for Mowing Towing optional hitch accessory Adjusting Cutting HeightCondition Cause Cure Troubleshooting Cutting ConditionsScalloped Cut, or Rough Contour Troubleshooting Contd Condition Cause CureGround Troubleshooting ContdAdjustments Parking Brake AdjustmentTravel Adjustments RH Steering Control Rod Adjustment Neutral AdjustmentThrottle Control and Choke Adjustments Tracking AdjustmentBelt Adjustment Belt AlignmentCutter Deck Adjustments Cutter Deck LevelCutter Deck Pitch Cutter Deck Height Custom-Cut Baffle AdjustmentCustom Cut Baffle Maintenance Chart Recommended Service Intervals MaintenanceLubrication Grease Fitting Lubrication Chart see Figure Maintenance Chart Recommended Service Intervals ContdLubrication Fitting Points Hydraulic System Checking Hydraulic Oil LevelChanging Hydraulic Oil Changing Hydraulic Oil Filter Element Engine OILChecking Engine Crankcase Oil Level Changing Engine Crankcase OilEngine AIR Cleaner BatteryEngine Fuel System Battery Electrolyte First AID Charging the BatteryDrive Belts Jump StartingCutter Blades Blade InspectionTires Blade ReplacementChecking Lubricant Level Cutter Deck GearboxCooling System Checking Coolant LevelCleaning the Radiator Debris Screen Checking The Fan Belt TensionBODY, DECK, and Upholstery Page 61A, 72A Cutter Decks Ref. Part Description Cutter Deck Controls Part Description Sheet Metal Components Wheel Assy Inc.items 20, 42, 43, 54 Deck Drive Components Ref. Part Description RADIATOR, Coolers & Engine Brackets Ref. Part No. No. Description Brake and Steering Components Part Description Fuel and Hydraulic System Ref. Part Description Electrical System Ref. Part No. No. Description Hydraulic Pump Assembly BDP-21L Housing Kit Includes Housing, Journal Bearing Wire HARNESS, STT 31BSG Part Number Heavy-Duty 48825 48314 481937 Limited Warranty Commercial Equipment 2002
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