Scag Power Equipment SFZ manual 4 Top Port Plug Location, 5 Dump Valve Control Lever

Section 7

5.Once the hydraulic system has drained, install new hydraulic oil filters to both axles by hand, turn 3/4 to one complete turn after the filter gasket contacts the filter base.

6.Reinstall the filter guards and torque the screws to 65 in/lbs.

7.Remove the top port plug from both axles before filling with oil. (See Figure 7-4).

11.Move the dump valve control levers to the "freewheel" position. (See Figure 7-5).

DUMP VALVE

CONTROL LEVER

"DRIVE" POSITION

"FREEWHEEL" POSITION

2007 SFZ DVL

REMOVE TOP

PORT PLUG

Figure 7-4 Top Port Plug Location

8.Fill the hydraulic system oil reservoir with 20w50 motor oil until oil just appears at the bottom of each axles top port. Approximately 5 quart capacity. Reinstall the top port plugs and torque to 180 in/lbs.

-NOTE-

The left side axle will fill with oil first using approximately 4 Quarts of oil. Reinstall the top port plug in the left axle and continue filling the hydraulic system through the reservoir. The right side axle should fill up to the bottom on the top port plug after adding an additional one quart of oil. Reinstall the top port plug on the right axle and fill the hydraulic oil reservoir to the proper level as explained in section 7.2.

9.Reinstall the hydraulic oil reservoir cap.

10.The hydraulic system will need to be purged. Raise the rear of the machine so the drive wheels are off the ground. Use jackstands and block the wheels to prevent the machine from moving.

Figure 7-5 Dump Valve Control Lever

12.While in the operators position, start the engine and disengage the parking brake.

13.Run the engine at 1/2 throttle and move the steering control levers forward and backward 5 to 6 times.

14.Engage the parking brake. Move the dump valve control levers to the drive position. (See Figure 7-5).

15.While in the operators position,, run the engine at 1/2 throttle. Release the parking brake, move the steering control levers forward and backward 5 to 6 times. It may be necessary to repeat steps 12 to 15 until the air is completely purged from the system.

16.Check the hydraulic system oil level as explained in section 7.2.

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