Lift Circuit Problems
Problem
Possible Cause
Cutting deck (or wing decks) will not
raise.
Engine RPM is too low.
Hydraulic oil level in reservoir is low.
NOTE: The seat must be occupied
in order to raise cutting deck.
Solenoid valve (S1) in lift/lower manifold is faulty.
Electrical problem exists (see Chapter 5 -- Electrical System).
Lift arm pivots are binding.
Relief valve in lift/lower manifold is stuck.
Lift cylinder(s) is (are) damaged.
Gear pump section for lift/lower circuit is inefficient (NOTE: steering
and traction charge circuits impacted as well).
Cutting deck (or wing decks) raise,
but will not stay up.
Lift circuit lines or fittings are leaking.
Lift cylinder is damaged.
NOTE: Lift cylinders cannot provide
an absolutely perfect seal. The cut-
ting deck will eventually lower if left
in the raised position during storage.
Cartridge valve(s) in lift/lower manifold has damaged seals or is
faulty.
Cutting deck (or wing decks) will not
lower.
Lift arm pivots are binding.
Electrical problem exists (see Chapter 5 -- Electrical System).
Solenoid valve (S1) in lift/lower manifold is faulty.
Counterbalance pressure is excessive.
Lift cylinder is damaged.
NOTE: To lower cutting deck (or
wing deck), the seat must be occu-
pied and the traction speed must be
in the Low (4WD) position.
Groundsmaster 4100--D/4110--D
Page 4 -- 33
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 10177SL, Toro Groundsmaster 30447, Toro Groundsmaster 30449, Toro Groundsmaster 4100, Toro Groundsmaster 4110 D |
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| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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