Toro Groundsmaster 580-D Service Manual page 171

"TRACTION PLUS" SHIFT Pressure Test
1. Connect a 1,000 psi gauge to the LIFT test port. Con-
nect a 5,000 psi gauge to TRACTION FORWARD test
port.
a. On machines with serial number below
250000000, the LIFT and TRACTION FORWARD
test ports are located on the outside of the control
console (Fig. 13).
b. On machines with serial number above
250000000, the LIFT and TRACTION FORWARD
test ports are located underneath the center of the
machine (Figs. 14 and 14A).
2. Start the engine and adjust throttle so engine speed
is 2,500 RPM. Move GROUND SPEED switch to LOW
RANGE.
3. While watching gauges, engage service brake and
slowly push traction pedal in the FORWARD direction.
Note pressure at TRACTION FORWARD PORT when
pressure at LIFT port shifts from Counterbalance pres-
sure to "Traction Plus" pressure (see Counterbalance
and "Traction Plus" Pressure Tests above).
TESTER READING TO BE 2,000 to 2,050 PSI.
4. If SHIFT pressure is incorrect, locate "TRACTION
PLUS" shift cartridge on control manifold. Remove cap
on "TRACTION PLUS" shift cartridge and adjust the car-
tridge screw until correct SHIFT pressure is obtained
(Fig. 15).
Groundsmaster 580--D
2
2
1. Counterbalance relief cartridge
2. "Traction Plus" relief cartridge (upper)
3. "Traction Plus" shift cartridge (lower)
Rev. F
Page 4 - -
28.1
1
Figure 15
Testing