Problem
Possible Causes
Cutting units will not raise.
Engine RPM is too low.
Hydraulic oil level in reservoir is low.
Lift cylinder(s) is (are) damaged.
Lift arm pivots are binding.
Relief valve for lift/lower circuit is stuck.
Pilot valve in lift/lower manifold is damaged or sticking.
Proportional valve in gear pump is faulty.
Gear pump section for lift/lower circuit (P3) is inefficient.
Lift circuit lines or fittings are leaking.
Cutting units raise, but will not stay
up.
Detents in lift/lower control valve are worn.
Lift cylinder is damaged.
Lift arm pivots are binding.
Cutting units will not lower.
Lift cylinder is damaged.
Counterbalance pressure is excessive.
Lift/lower control valve is worn or damaged.
Pilot valve in lift/lower manifold is damaged or sticking.
Hydraulic System (Rev. A)
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Groundsmaster 4500--D/4700--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | 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 |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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