Toro 00062SL Rev I Greensmaster 3250 D Service Manual

Mow and Backlap (Serial Number Under 260999999)
Thegearpump(P1)isdirectlycoupledtothethehydros-
tat which is driven directly by the engine. Taking its suc-
tion directly from the hydraulic reservoir, the gear pump
(P1) supplies oil flow to the hydraulic manifold block and
to the cutting reel motors.
On units  with  the optional  backlap kit  installed,  flow
through the manifold block is different. Oil flow from port
(P1) flows  through the 11  position reel speed  control
valve (FC1).  Flow  across the  speed control  valve is
pressure  compensated  by  the  logic cartridge  valve
(LC1). The logic cartridge  valve maintains a pressure
differential of 75 PSI (5.2 bar) across the speed control
valve. Any excess flow  above what the speed control
valve is set for is by--passed to the reservoir through the
logiccartridgevalve.Withthebacklapvalve(RD1)inthe
mow position, oil flows through the valve, out port (MA),
and to the reel motors that are connected in series.
With the engine running and the Functional Control and
Raise/Lower/Mow levers  positioned so  the reels   will
not turn (see Operator’s Manual), solenoid valve (S1) is
de--energized. S1 by--passes flow from the gear pump
(P1) directly to the hydraulic reservoir.
Mow
Oil flows through the left (M2), right (M3), and then rear
reel motor (M1) as it turns the motors in the mow direc-
tion. The oil then returns through the manifold block and
oil filter and then to the reservoir.
With the engine running and the Functional Control and
Raise/Lower/Mow levers  positioned so  the reels   will
turn (see Operator’s Manual), solenoid valve (S1) is en-
ergized. Flow is diverted to the reel motors. Gear pump
(P1)flowisroutedoutmanifold   port(MA),andtothereel
motors that are connected in series.  Oil flows through
the left (M2), right (M3), and then rear reel motor (M1)
as it turns the motors in the mow direction. The oil then
returns through the manifold block, oil filter and then to
the reservoir.
Backlap
On machines with backlap capabilities, backlapping op-
eration is the same as mowing operation, except for the
position of the backlap valve (RD1). When the backlap
valve is in  the backlap position, oil  flows through the
rear (M1), right (M3), and then left (M2) reel motor as it
turns the motors in the backlap direction.
Note:
On  traction  units  with  serial  numbers  from
to 260999999, solenoid valve (S6) is ener-
230000601
gized when the cutting units are raised. This forces the
returnflowfromthereelmotorsthroughthe.125”orifice,
putting back pressure on the reel circuit, and stopping
the reels from rotating.
Greensmaster 3250--D
Page 4 -- 21
Hydraulic System (Rev. I)
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 308 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. 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 TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
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