Toro Groundsmaster 4700-D Service Manual page 85

Procedure for Cutting Deck Circuit Pressure Test
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately ten
(10) minutes. Make sure the hydraulic tank is full.
2. Park machine on a level surface with the cutting
decks lowered and off. Make sure engine is off and the
parking brake is engaged.
3. Raise hood to allow access to deck control manifold.
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.
4. Install 5000 PSI (350 bar) pressure gauge with hy-
draulic hose attached to deck control manifold test port
for the cutting deck circuit to be tested (Fig. 41 or 42).
5. After installing pressure gauge, start engine and run
at idle speed. Check for hydraulic leakage and correct
before proceeding with test.
CAUTION
Keep away from decks during test to prevent per-
sonal injury from the cutting blades.
6. Move throttle to full speed (2870 RPM). Engage the
cutting decks.
7. Watch pressure gauge carefully while mowing with
the machine.
8. Cutting deck circuit pressure should be from 1000 to
3500 PSI (69 to 241 bar) and will vary depending on
mowing conditions.
9. Disengage cutting decks. Shut off engine. Record
test results.
10.After testing is complete, disconnect pressure gauge
from manifold test port.
11. Lower and secure hood.
Groundsmaster 4500--D/4700--D
GM 4500- -D
1
FRONT
1. Test port G1 (decks 2, 3, & 5)
2. Test port G3 (decks 1 & 4)
GM 4700- -D
1
FRONT
1. Test port G1 (decks 2,3,5,7)
2. Test port G3 (decks 1,4,6)
#4 Deck
#6 Deck
(GM4700)
CUTTING DECK LOCATIONS
Page 4 - - 51
2
Figure 41
2
Figure 42
#1 Deck #5 Deck
#2 #3
#7 Deck
Deck Deck
(GM4700)
Figure 43
Hydraulic System