Implement Relief Pressure Test (Using Pressure Gauge) (Machine Serial Numbers Below 316000000) - Toro Groundsmaster 3280-D Service Manual

Implement Relief Pressure Test (Using Pressure Gauge) (Machine
Serial Numbers below 316000000)
Groundsmaster ® 3280-D/3320
05138SL Rev B
g230803
1. Seat base opening
2. Check valve
g230804
1. Relief valve
The implement relief pressure test should be done if a problem is suspected
with the implement relief valve.
Note: When conducting the Implement Relief Pressure Test, use a 34,500 kPa
(5,000 psi) Pressure Gauge.
1. Perform steps 1 through 8 of the
Gauge) (Machine Serial Numbers below 316000000) (page
to use a 34,500 kPa (5,000 psi) Pressure Gauge.
2. With the engine running at 3,200 rpm, move the lift control lever to the R
position and allow the cutting unit (or implement) to fully raise. Continue to
hold the lever in the R
pressure reading should be from 4,820 to 6,900 kPa (700 to 1,000 psi) as the
implement relief valve lifts.
3. Move the lift control lever to the L
implement) to the ground. Shut off the engine. Record test results.
Figure 61
3. Pipe plug
4. Implement relief valve
Figure 62
Charge Pressure Test (Using Pressure
position and observe the pressure gauge. The
AISE
position to lower the cutting deck (or
OWER
Page 5–51 Hydraulic System: Testing the Hydraulic System
5–49). Ensure
AISE