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Reelmaster 7000−D Hydraulic SystemPage 5 − 35

Lift/Lower Circuit Problems

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Problem

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Possible Cause

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Cutting units will not raise.

NOTE: Operator must be in seat in

order to raise the cutting units.

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Operator seat is unoccupied.

Hydraulic oil level in reservoir is low.

Electrical problem exists that prevents lift manifold solenoid valve

operation (see Chapter 6 − Electrical System).

Lift cylinder(s) is (are) damaged.

Lift arm pivots are binding.

Lift/lower circuit relief valve (RV1) in lift manifold is stuck open.

Solenoid valve(s) in lift manifold is damaged or sticking.

Flow divider (FD) in fan control manifold is faulty.

Gear pump section (P4) is worn or damaged.

(NOTE: A worn or damaged gear pump section (P4) will also affect

the traction (charge) and steering circuits).

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Cutting units raise, but will not stay

up as the traction units travels

between adjacent fairways or fields.

NOTE: Lift circuit components can-

not provide an absolutely perfect

seal. The lift arms will eventually

lower if left in the raised position dur-

ing storage.

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Lift circuit hydraulic lines or fittings are leaking.

Cartridge valve in lift manifold is stuck open.

Air exists in lift circuit.

Lift cylinder is damaged.

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Cutting units will not lower.

NOTE: Operator must be in seat

and traction system must be in LOW

speed (mow) in order to lower the

cutting units.

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Operator seat is unoccupied.

Traction system is in HI speed (transport).

Lift arm pivots are binding.

Lift cylinder is damaged.

Electrical problem exists that prevents lift manifold solenoid valve

operation (see Chapter 6 − Electrical System).

Lift/lower circuit relief valve (RV1) in lift manifold is stuck open.

Hydraulic

System

Brand	Toro
Model	03721
Category	Lawn Mower
Language	English

Toro 03721 Service Manual

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