Mow Circuit Cutting Deck Blade Braking
WhentheoperatorturnsthePTOswitchOFForifadeck
is raised with the PTO switch ON, deck control manifold
solenoid valve (S) is de--energized causing logic car-
tridge(LC1)toshift(refertoinformationinPTOMowCir-
cuit in this section). This shifted cartridge allows oil
return out manifold port P2. At the same time, solenoid
valve (S) in its neutral position prevents any sense line
flow through the spool which causes the logic cartridge
LC2 to shift to its neutral position blocking return flow
from the deck motor and slowing the cutting blades (Fig.
10).
DECK MANIFOLD
RV2
G
M1
RV1
P1
LC1
DECK
MOTOR
S
LC2
M2
P2
Theinertiaoftherotatingcuttingblades,however,effec-
tively turns the deck motor into a pump causing an in-
crease in pressure as the flow from the motor comes up
againsttheclosedlogiccartridge(LC2).Whenthispres-
sure builds to approximately 600 PSI (41 bar), relief
valve (RV2) opens which allows a small amount of hy-
draulic flow to return to tank through a manifold sensing
line (Fig. 11). This flow causes a pressure increase that
shifts logic cartridge LC2 to once again allow oil flow
from the motor (Fig. 12). When motor return pressure
drops below 600 PSI (41 bar), relief valve (RV2) reseats
and causes LC2 toclose again blocking return flow from
the deck motor to further slow the cutting blades. This
actionofthebrakereliefvalveopening andthelogiccar-
tridge shifting occurs several times in a very short time
frame as the blades finally come to a stop. Once the
blades have stopped, logic cartridge LC2 remains in the
neutral position to keep the deck motor from rotating.
CD
Figure 10
DECK MANIFOLD
RV2
G
M1
RV1
P1
LC1
DECK
MOTOR
S
LC2
M2
P2
CD
Figure 11
DECK MANIFOLD
RV2
G
M1
RV1
P1
LC1
DECK
MOTOR
S
LC2
M2
P2
CD
Figure 12
Hydraulic System
Page 4 -- 20
Groundsmaster 4100--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 30413, Toro Groundsmaster Groundsmaster 4100 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)
At only 700mm wide the Mini Dumper is even at home on tight access
sites. No need to grunt, groan, and force the
mower about the yard. The US will be getting a revised 2011 Jeep Wrangler but the diesel option will not be offered in the United States.