Procedure for Cutting Deck Manifold Relief
Pressure Test
Rotation Direction
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
Make sure hydraulic oil is at normal operating tem-
2.
lowered and off. Make sure engine is off and the parking
brake is engaged.
Parkmachineonalevelsurfacewiththecuttingunits
1
2
CAUTION
3
Figure 32
3.
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.
1.
2.
Pressure IN
Pressure OUT
Case drain
1
3.
Determine deck manifold relief to be tested. Discon-
2
necttheinlethydraulic hosetotheappropriate deck mo-
tor (Fig. 32):
A. For pump section (P1), deck manifold relief is
tested at the inlet to the motor on deck #5.
B. For pump section (P2), deck manifold relief is
tested at the inlet to the motor on deck #1.
4.
connected hose and deck motor inlet.
Install hydraulic flow meter in series with the the dis-
GM 4500--D DECK CONTROL MANIFOLDS
Figure 33
5.
open.
Make sure the flow control valve on the tester is fully
1.
2.
Deck 2, 3, & 5 relief valve (pump section P2)
Deck 1 & 4 relief valve (pump section P1)
1
CAUTION
2
Keepawayfromdecksduringtesttopreventper-
sonal injury from the cutting blades.
6.
50
Start engine and move throttle to full speed (2800 +
RPM). Engage the cutting units.
7.
the flow control valve to fully closed.
Watch pressure gauge carefully while slowly closing
GM 4700--D DECK CONTROL MANIFOLDS
Figure 34
Deck 2, 3, 5, & 7 relief valve (pump section P2)
Deck 1, 4, & 6 relief valve (pump section P1)
8.
3400
As the relief valve lifts, system pressure should be
to 3750 PSI.
1.
2.
9.
Disengage cutting units.Shutoffengine. Ifspecifica-
tion is not met, clean or replace relief valve (PRV1 or
PRV2) located in the hydraulic deck control manifold
(Fig. 33 and 34).
10.Disconnect
tester from motor and hose. Reconnect
hydraulic hose to deck motor.
Groundsmaster 4500--D/4700--D
Page 4 -- 35
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 4500 D, Toro Groundsmaster 4700 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)