Toro Groundsmaster 4500-D Series Service Manual page 168

Procedure for Cutting Deck Circuit Relief Pressure Test
Hydraulic System: Testing
Prevent personal injury and/or damage to equipment. Read all
WARNINGS, CAUTIONS and Precautions for Hydraulic Testing at the
beginning of this section.
1. Make sure hydraulic oil is at normal operating temperature by operating
the machine for approximately ten (10) minutes. Make sure the hydraulic
reservoir 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.
#6 Deck
(GM4700)
g308386
g308391
1. Flow IN
2. Flow OUT
3. Determine cutting deck circuit relief pressure to be tested:
A. For the first gear pump section (decks #2, #3, #5 and #7), cutting deck
circuit relief (PRV2) is tested at the inlet to the deck #5 motor
CAUTION
#4 Deck #1 Deck
#2 #3
Deck Deck
Figure 77
CUTTING DECK LOCATIONS
1
3
Figure 78
3. Case drain
Page 5–66
#5 Deck
#7 Deck
(GM4700)
(Figure
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
77).