Procedure for Cross±over Relief Pressures Check:

1.Make sure hydraulic oil is at normal operating tem- perature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full.

2.Make sure machine is parked on a level surface with the cutting units lowered. Make sure engine is off and parking brake is engaged. Back bedknives off all reels.

CAUTION

Operate all hydraulic controls to relieve system pressure and avoid injury from pressurized hydraulic oil.

3.Clean manifold port G1. Remove cap and install pressure gauge in manifold port G1.

4.Put a block of wood between the blades of the cut- ting unit being tested to prevent the reel from rotating.

5.Make sure backlap knob on the valve block is in the mow position.

6.One person should sit on the seat and operate the machine while another person reads the tester. Start en- gine and set throttle to full speed (3200  100 RPM).

CAUTION

Keep away from reels during test to pre- vent personal injury from the rotating reel blades.

CAUTION

Do not allow system pressure to exceed 1700 PSI. Shut off unit to prevent an over pressure condition.

7. Engage cutting units. Observe pressure gauge.

Motor Position

Pressure Range (PSI)

 

 

Right Hand

1500 to 1600

 

 

Rear

1540 to 1640

 

 

Left Hand

1580 to 1680

 

 

8.Disengage cutting units and stop engine. If specifi- cations are not met, replace cross±over relief. If specifi- cations are met, remove block of wood from cutting unit and repeat test on other reels in mow direction.

9.Remove test gauge and put cap on manifold port

G1.

IMPORTANT: Each reel motor has two cross over reliefs. Test reliefs in the backlap direction only if they are expected to be the problem. After testing cross over reliefs in the backlap direction, make sure the reel motor couplings are torqued (see Hy- draulic Motor Removal and Installation of Chapter 7

±Cutting Units and Reel Motor in the Service and Repair section).

10.Clean left±hand reel motor and its hose connection leading to manifold port M3. Disconnect hose connec- tion and install pressure gauge with a T±connection be- tween the hose connection and the motor.

11.Make sure backlap knob on the valve block is in the backlap position.

12.One person should sit on the seat and operate the machine while another person reads the gauge. Start engine and move the throttle to full speed (3200  100 RPM).

CAUTION

 

 

 

Keep away from reels during test to pre-

 

 

Hydraulic System

vent personal injury from the rotating reel

 

 

 

 

 

blades.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

 

 

 

 

 

 

 

 

 

Do not allow system pressure to exceed

 

 

 

1700 PSI. Shut off unit to prevent an over

 

 

 

pressure condition.

 

 

 

 

 

 

 

 

 

 

13. Engage cutting units. Observe pressure gauge.

Motor Position

Pressure Range (PSI)

 

 

Right Hand

1580 to 1680

 

 

Rear

1540 to 1640

 

 

Left Hand

1500 to 1600

 

 

14.Disengage cutting units and stop engine. If specifi- cations are not met, the cross±over relief needs replac- ing. Remove block of wood from cutting unit and repeat test on other reels in the same direction of flow.

15.Remove test gauge and reconnect hose to motor. Adjust bed bedknife to reel on all cutting units (see Ad- justment section of Chapter 7 ± Cutting Units.

Reelmaster 2300±D/2600±D

Page 4 ± 31

Hydraulic System

Page 69
Image 69
Toro 2600D, 2300-D service manual Procedure for Cross±over Relief Pressures Check, Motor Position Pressure Range PSI

2600D, 2300-D specifications

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