Toro Reelmaster 4500–D Service Manual page 193

TEST NO. 2: Checking Counterbalance Oil Pressure
Procedure:
1. Install a 10,000 psi gauge into the center quick dis-
connect as shown.
2. Start the engine and move throttle to full speed
(2500 rpm).
3. Tester reading should be within the range listed:
COLD OIL: 600 – 650 PSI
HOT OIL: 500 – 550 PSI
NOTE: Due to special conditions or customer prefer-
ence, the counterbalance may require setting outside
this recommended range. However, the range listed will
be adequate for most conditions.
4. If necessary, adjust the relief valve screw until the de-
sired pressure is attained. Turn the screw in to increase
counterbalance pressure and turn the screw out to de-
crease counterbalance pressure. Adjust nearer the high
end of the range for improved hill climbing or nearer the
low end for improved quality–of–cut.
Reelmaster 4500–D
Page 4 – 31
Figure 16
Figure 17
Hydraulic System