Toro Groundsmaster 4500-D Service Manual page 69

Procedure for Cutting Deck Circuit Pressure Test
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. Park machine on a level surface with the cutting units
lowered and off. Make sure engine is off and the parking
brake is engaged.
CAUTION
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS, and Pre-
cautions for Hydraulic Testing at the beginning
of this section.
3. Install test gauge with hydraulic hose attached to
deck control manifold test port for the gear pump section
to be tested (Fig. 28 or 29).
CAUTION
Keep away from decks during test to prevent per-
sonal injury from the cutting blades.
4. Start engine and move throttle to full speed (2800 +
50 RPM). Engage the cutting units.
5. Watch pressure gauge carefully while mowing with
the machine.
6. Cutting deck circuit pressure should be from 1000 to
3500 PSI and will vary depending on mowing condi-
tions.
7. Disengage cutting units. Shut off engine.
8. Disconnect test gauge with hose from manifold test
port.
Groundsmaster 4500--D/4700--D
1
GM 4500- -D DECK CONTROL MANIFOLDS
1. Test port (decks 2, 3, & 5)
1
GM 4700- -D DECK CONTROL MANIFOLDS
1. Test port (decks 2,3,5,7)
#4 Deck
#6 Deck
(GM4700)
CUTTING DECK LOCATIONS
Page 4 - - 31
2
Figure 28
2. Test port (decks 1 & 4)
2
Figure 29
2. Test port (decks 1,4,6)
#1 Deck #5 Deck
#2 #3
#7 Deck
Deck Deck
(GM4700)
Figure 30
Hydraulic System (Rev. A)