Toro Greensmaster 3150 Service Manual page 59

Procedure for Mow Circuit Relief Valve (R1) Pres-
sure Check:
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes.
2. Park machine on a level surface with the cutting
units lowered. Make sure engine is off and the parking
brake is engaged. Make sure the hydraulic tank is full.
CAUTION
Before continuing further, read and become fa-
miliar with Precautions for Hydraulic Testing.
3. Disconnect hose connection on the bulkhead that
leads to the left reel motor.
4. Install tester in series with the disconnected hose
and bulkhead connection. Make sure the flow control
valve on the tester is fully open.
5. To prevent reel damage, temporarily adjust bed-
knife to allow clearance between bedknife and reel (no
contact).
6. If a backlap kit is installed, make sure backlap knob
on the hydraulic manifold is in the mow position. Make
sure reel speed knob (FC1) is set to highest speed set-
ting (fully open).
CAUTION
Keep away from reels during test to prevent per-
sonal injury from the rotating reel blades.
7. Start engine and move throttle to full speed (2850 +
50 RPM. Engage the cutting units.
8. Watch pressure gauge carefully while slowly clos-
ing the flow control valve on the tester to fully closed.
9. System pressure should be from 2160 to 2640 PSI
(149 to 182.2 bar). Note: If a dethatching kit is installed,
system pressure should be from 2700 to 3300 PSI
(186.3 to 227.7 bar). Record test results.
A. If specification is not met, shut off engine and
adjust relief valve (R1) (Fig. 11) (see Adjust Man-
ifold Relief Valves in the Adjustments section of this
Chapter). After adjustment, retest relief valve (R1)
pressure.
B. If this specification is met, go to step 10.
Greensmaster 3150
1
FRONT
S6
Serial Number 230000801 & Up Shown
1. Hydraulic manifold
10. Disengage cutting units. Open control valve on test-
er and shut off engine.
11. Disconnect tester from manifold and hose. Recon-
nect hose to the bulkhead connection.
12. Correctly readjust bedknife.
Page 4 – 35
2
Figure 11
2. Relief valve (R1)
Hydraulic System