Raise Cutting Deck
A four section gear pump is coupled to the piston (trac-
tion) pump. The third gear pump section supplies hy-
draulicflowtothelift/lowercontrolvalveandthesteering
control valve. Hydraulic flow from this pump section is
delivered to the two circuits through a proportional flow
divider. The gear pump takes its suction from the hy-
draulic reservoir.
To raise a wing deck, the appropriate lift lever on the lift/
lower control valve is pulled to allow valve shift in the lift/
lower control valve. This valve change allows hydraulic
pressure to the piston end of the wing deck lift cylinder
and causes the cylinder shaft to retract, raising the wing
deck. Oil from the rod end of the cylinder flows to the
tractionchargecircuit.Whentheliftleverisreleased,the
lift cylinder and wing deck is held in position.
When the cutting deck is in a stationary position, flow
from the gear pump is by--passed through the lift/lower
control valve, counterbalance manifold, oil filter and
traction charge circuit.
Anadjustablecounterbalancevalve(CB)inthecounter-
balance manifold maintains back pressure on the deck
lift cylinders to allow some of the cutting deck weight to
be transferred to the traction unit to improve traction. A
reliefvalve located inthelift/lowercontrolvalve limitslift/
lower circuit pressure to 1500 PSI (103 bar). Excess cir-
cuit flow is routed to the oil filter and then to the traction
charge circuit.
To raise the cutting deck, the center lift lever on the lift/
lower control valve is pulled to allow valve shift in the lift/
lower control valve. This valve change allows hydraulic
pressure to the rod end of the front deck lift cylinders,
causing the cylinders to retract. As the cylinders retract,
thecutting deckraises.Oilfromthepiston endofthecyl-
inders returns to the hydraulic reservoir. When the lift le-
ver is released, the lift cylinders and cutting deck is held
in position.
Groundsmaster 4100--D
Page 4 -- 17
Hydraulic System
| 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 |
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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.