Hydraulic System Air Purge

Maintenance

Note: Do Not change hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.

Changing oil unnecessarily could damage hydraulic system by introducing contaminates into the system.

Service Interval: As required

Air must be purged from the hydraulic system when any hydraulic components, including oil filter, are removed or any of the hydraulic lines are disconnected.

The critical area for purging air from the hydraulic system is between the oil reservoir and each charge pump located on the top of each variable displacement pump (Figure 15). Air in other parts of the hydraulic system will be purged through normal operation once the charge pump is “primed”.

Figure 15

1. Charge pump cap

2. Loosen 1 1/2 turns only

1.Stop engine and wait for all moving parts to stop. Raise the rear of the machine up onto jack stands high enough to raise the drive wheels off the ground.

2.Check oil level as stated in Check Hydraulic Oil Level section.

3.Start engine and move throttle control ahead to full throttle position. Move the speed control lever to the middle speed position and place the drive levers in the “drive” position.

If either drive wheel does not rotate, it is possible to assist the purging of the charge pump by carefully rotating the tire in the forward position.

Note: It is necessary to lightly touch the charge pump cap with your hand to check the pump temperature. If the cap is too hot to touch, turn off engine. The pumps may be damaged if the pump becomes too hot.

If either drive wheel still does not rotate continue with step 4.

4.Thoroughly clean the area around each of the charge pump housings.

5.To “prime” charge pump, loosen two hex socket head capscrews (shown in Figure 15) 1 1/2 turns only. Make sure engine is not running. Lift the charge pump housing upward and wait for a steady flow of oil to flow out from under the housing. Retighten the capscrews. Do this for both pumps.

Note: Hydraulic reservoir can be pressurized up to 5 psi to speed this process.

6.If either drive wheel still does not rotate, stop and repeat steps 4 and 5 above for the respective pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Check the Hydraulic Oil Level section.

7.Allow unit to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Check the Hydraulic Oil Level section.

8.Check hydro drive linkage adjustment as stated in Hydro Drive Linkage Adjustment section in Adjustments.

0, 312, 000 & higher specifications

Exmark has long been synonymous with excellence in the world of lawn care and landscaping, and their 000 & higher, 0,312 series is no exception. Engineered for both professional landscapers and passionate homeowners, this series brings together innovative technology with robust design to deliver unparalleled performance and durability.

One standout feature of this series is its powerful engine options, which ensure efficient cutting and grass handling capabilities. The engines are designed to provide consistent power and reliability, even in tough conditions. This reliability is complemented by high-quality cutting decks that deliver precision cuts and exceptional mulching abilities, ensuring that your lawn stays healthy and vibrant.

The cutting height adjustment system allows users to easily modify the height to suit various types of grass and landscaping needs. This adaptability ensures that your grass is always maintained at the optimal length for health and aesthetics. The ergonomic design of the handles incorporates comfort grips, reducing fatigue during prolonged use while providing excellent control over the machine.

Another significant aspect of the 000 & higher, 0,312 series is its advanced technology integration. Many models in this series come equipped with efficient fuel systems that enhance performance while minimizing fuel consumption. Furthermore, the inclusion of intelligent controls and monitoring systems enables users to make informed adjustments, ensuring that the equipment operates at peak performance.

The robust construction of the chassis and frame means that these machines can withstand the rigors of everyday use in various landscapes. The high-quality materials used in the manufacturing process enhance the longevity of the equipment, making it a worthy investment for those serious about maintaining their lawns.

In addition, Exmark places a strong emphasis on safety features. The series includes protective shields and easy-to-access controls that prioritize user safety without compromising on functionality. Maintenance is made simple through user-friendly designs, allowing for quick access to essential components.

In conclusion, the Exmark 000 & higher, 0,312 series presents a perfect blend of power, innovation, and user-focused features. With its reliable performance, flexible adjustment options, and sturdy design, this series continues to set the standard for excellence in lawn care equipment. Whether you’re a professional or a homeowner, the Exmark 000 & higher, 0,312 series stands ready to meet all your landscaping needs.