Great Dane GDRZ52-25KHE, GDRZ72-27KHE Sharpening Blades, Balancing Blades, Replacing Mower Blades

Page 52

SERVICE MOWER

Replacing Mower Blades

A

C

D

B

MX15357

1.Use two long-handled 15/16 in. wrenches to loosen nut

(A).

2.Remove nut (A), blade bolt (B), three 1/4 in. washers (C) and blade (D).

3.Install replacement blade:

• Blade wing must face toward top of mower deck.

IMPORTANT: Avoid damage! When installing the blade:

•Make sure the blade is properly seated on the spindle.

•Make sure the concave side of the large washer faces toward the blade.

•Install blade bolt (B), blade (D), three 1/4 in. washers

(C) and nut (A).

•Tighten blade nut to 81 N•m (60 lb-ft).

4.Lower machine.

5.Adjust mower deck to a desirable cutting height.

Sharpening Blades

c CAUTION: Avoid injury! Mower blades are dangerous!

•Always wear gloves while working on blades.

•Always wear safety eye protection when grinding.

•Sharpen blades with grinder, hand file or electric blade sharpener.

A

B

MX8333

•Keep original bevel (A) when grinding.

•Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.

•Balance blades before installing.

Balancing Blades

c CAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.

1. Clean blade.

M61524

2.Put blade on nail in a vise. Turn blade to horizontal position.

3.Check balance. If blade is not balanced, heavy end of blade will drop.

4.Grind bevel of heavy end. Do not change blade bevel.

Replacing Mower Spindle Bearings - 48-, 52- and 61-Inch Mower Decks

1.Park machine safely. (See Parking Safely in the Safety section.)

Service Mower - 48

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Contents OPERATOR’S Manual Introduction Using Your Operator’s ManualSpecial Messages Product Identification Record Identification NumbersTable of Contents Safety Understanding The Machine Safety LabelsM131748, MX15340 Emission Control System Certification Label Emission Compliance PeriodCertification Canadian Electromagnetic Compatibility EMC ComplianceOperator Training Required Operating SafelyUsing a Spark Arrestor Checking Mowing AreaParking Safely Rotating Blades are DangerousAvoid Tipping Keep Riders OffChecking Wheel Bolts Wear Appropriate Clothing Practice Safe MaintenanceDriving Safely on Public Roads Avoid High-Pressure Fluids Tire SafetyPrevent Fires Handling Waste Products and Chemicals Handling Fuel SafelyFuel and fuel vapors are highly flammable Daily Operating Checklist Testing Safety SystemsOperating Operator Station ControlsTesting PTO Switch Testing Park Brake SwitchTesting Neutral Start Switch Testing Seat SwitchAdjusting Seat Adjusting Mower Deck Cutting HeightMounting and Dismounting Machine Safely Raising and Lowering Operator SeatAdjusting Mower Deck Anti-Scalp Wheels Using the Park BrakeUsing the Key Switch Using the PTOUnlocking Park Brake Engage PTOUsing the Throttle Lever Using the HourmeterUsing the Choke Carbureted Engines Only Using the Motion Control LeversNeutral Lock Position Optional Over the Lap Levers Forward Gentle Right Turn ReverseGentle Left Turn Sharp Left TurnStarting the Engine Engaging Mower Stopping the EngineUsing Hydraulic Pump Free-Wheel Valves Transporting MachineMowing Tips Picture Note Left pump shownDismounting to Inspect Mower Mowing Travel SpeedsAvoid Damage to Plastic and Painted Surfaces Parts Replacement PartsPart Numbers Service Intervals Service Lubrication GreaseSpray Lubricant Lubrication PointsPicture Note 48-, 52- and 61-inch mower decks Picture Note 72-inch mower deckService Engine Checking and Cleaning Air Filter Elements Cleaning Engine Air Intake Screen and FanCleaning Engine Oil Cooler Kohler Engines Oil Capacity With Filter DryChecking Spark Plug Adjusting Carburetor Carbureted Engines Replacing Fuel Filter Carbureted EnginesReplacing Fuel Filter Fuel Injected Engines Picture Note Kawasaki engine shownTroubleshooting the Kohler Electronic Fuel Injection System Priming Fuel Injectors Fuel Injected EnginesService Engine Service Transmission Hydraulic OilChecking Hydraulic Oil Level Changing Hydraulic Oil and FilterRemoving and Installing Traction Drive Belt Cleaning Hydraulic Pump Cooling FinsNeutral Creep Adjustment Checking and Adjusting Motion Control LinkagesCheck Maximum Speed Drift Maximum Speed Drift Adjustment Hydraulic System Hose Routing Hydraulic System Schematic Cooling OrificeService Steering & Brakes Remove and Install Front Caster WheelsServicing Front Caster Wheel Roller Bearings Chariot Servicing Front Caster Wheel Roller Bearings Chariot LXAdjusting Front Caster Spindle Bearing Servicing Caster Spindle BearingsHeight Adjustment Procedure Check AlignmentAdjusting Park Brake Alignment ProcedureRemoving and Installing Mower Deck Foot Plate Service MowerRemoving and Installing Mower Deck Belt Shields Adjusting Level Side-to-Side Leveling Mower DeckChecking Level Side-to-Side Picture Note Discharge chute raised for photo clarityChecking and Adjusting Cutting Height Adjust Thrust Arm-to-Stop Rod Clearance Transport PositionAdjust Assist Spring Tension Adjusting Deck Lift Assist Spring TensionCheck Spring Tension MX15328 MX15318 Checking and Replacing Mower Blades Balancing Blades Sharpening BladesReplacing Mower Blades Replacing Mower Spindle Bearings 72-Inch Mower Deck Service Mower Removing and Installing the Battery Service ElectricalCleaning Battery and Terminals Using Booster Battery Booster Battery Disabled Vehicle BatteryReplacing Fuse Carbureted Engines Replacing Fuses Fuel Injected EnginesBurnishing the PTO Clutch Wiring Schematic Carbureted Engines Wiring Schematic 26 HP Fuel Injected Engine Wiring Schematic 28 HP Fuel Injected Engine Service Miscellaneous Filling Fuel TankChecking Tire Pressure Tire Size PressureRemove and Install Rear Drive Wheels Cleaning and Repairing Metal SurfacesUsing Troubleshooting Chart TroubleshootingCheck Troubleshooting Electrical System Park Brake MachineSteering Mower Deck Storing Safety StoragePreparing Machine for Storage Preparing Fuel and Engine for StorageAssembly Install Motion Control Levers Install SeatCheck Safety System Lubricate MachineInitial Adjustments Specifications Height Adjustment Increments mm 1/2 Belt Shields, Removing and Installing Mower Deck IndexSpindle Bearings, Replace, 48-, 52- and 61-In. Decks Service Record GD Record Service Dates

GDRZ48-19KAE, GDRZ61-25KHE, GDRZ61-27KHE, GDRZ48-17KAE, GDRZ72-28KHE specifications

The Great Dane GDRZ series, including models GDRZ72-27KHE, GDRZ61-25KAE, GDRZ61-28KHE, GDRZ61-26KHE, and GDRZ52-25KHE, stands out as a robust line of refrigerated trailers designed for the rigorous demands of commercial transport and logistics. These models embody a perfect fusion of innovative technologies, exceptional performance, and high durability, catering specifically to the needs of operators in the freight industry.

One of the most notable features of the GDRZ series is its advanced insulation technology, which significantly enhances temperature retention. This is vital for businesses that rely on the transport of perishable products, ensuring that goods remain fresh throughout the journey. The GDRZ trailers utilize high-density foam insulation, providing superior thermal performance while minimizing energy costs.

In terms of structural integrity, the GDRZ series is built with a sturdy composite construction that enhances durability while reducing overall weight. This lightweight design contributes to improved fuel efficiency, allowing operators to maximize their payload without compromising on safety or performance. Moreover, these trailers are equipped with corrosion-resistant materials, extending their lifespan and reducing maintenance costs.

The cooling systems in the GDRZ models are engineered for optimal performance. High-efficiency refrigeration units with digital thermostatic controls ensure that temperature settings are maintained accurately and can be adjusted easily. This technology enables users to monitor and record temperature data, facilitating compliance with industry regulations and providing peace of mind regarding cargo safety.

Another highlight of the GDRZ series is its user-friendly features. The ergonomic design of the interior allows for easy access to cargo, while the integrated lighting solutions facilitate loading and unloading in low-visibility conditions. The models also feature reinforced tie-down points that secure cargo effectively, reducing the risk of movement and damage during transit.

Safety is a key consideration across the GDRZ line, with advanced braking systems and reflective markings enhancing visibility and control on the road. Additional safety features may include optional GPS tracking systems, allowing operators to monitor the whereabouts of their trailers in real time, ensuring timely deliveries and improved fleet management.

In summary, the Great Dane GDRZ series, with its various models, represents a significant advancement in refrigerated transport technology. Combining energy efficiency, durability, and user-centric design, these trailers are ideal for businesses seeking reliable solutions for their refrigerated transport needs. With a commitment to quality and innovation, Great Dane continues to set industry standards for excellence in trailer manufacturing.
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