PTO Problems
Problem
Possible Cause
No cutting decks will operate.
Decks are not fully lowered to ground.
NOTE: Decks have to be fully low-
ered and traction speed needs to be
in low speed (4WD) for decks to op-
erate.
Operator seat is unoccupied.
Traction system is in high speed (2WD).
Electrical problem exists that prevents deck control manifold sole-
noid valve operation (see Chapter 5 -- Electrical System).
Gear pump sections P1 and P2 are damaged.
Gear pump coupler is damaged (other hydraulic circuits will be af-
fected as well).
One cutting deck will not operate.
System pressure to the affected deck motor is low.
Cutting deck problem exists (see Chapter 8 -- Cutting Decks).
Spline on affected deck motor (or spindle) is damaged.
Deck motor relief valve is stuck or damaged.
Deck motor is damaged. NOTE: If appropriate, transfer a suspected
damaged motor to another cutting deck. If problem follows the motor,
motor needs repair or replacement.
On GM 4700--D, deck not fully lowered to ground (decks #6 and #7).
On GM 4700--D, cartridge valve SV1 or SV2 in deck control manifold
is damaged or sticking (decks #6 and #7).
Several cutting decks will not oper-
ate.
Electrical problem exists that prevents deck control manifold sole-
noid valve operation (see Chapter 5 -- Electrical System).
Decks are not fully lowered to ground.
Deck control manifold solenoid cartridge valve (PRV1 or PRV2) for
affected decks is faulty.
Logic cartridge valve (LC1 or LC2) in deck control manifold is stuck
or damaged.
Gear pump section (P1 or P2) is worn or damaged.
Groundsmaster 4500--D/4700--D
Page 4 -- 37
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 30857, Toro Groundsmaster 30858, Toro Groundsmaster 4500 D, Toro Groundsmaster 4700 D |
| Download File |
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| 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 |
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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