Mow Circuit Problems - Toro 04384 Service Manual

Mow Circuit Problems

Problem
Gear pump is noisy (cavitation).
Reels will not turn.
Reel speed is erratic.
Reel speed is low.
Greensmaster 3250--D
Possible Cause
Oil level in reservoir is low (other hydraulic circuits affected as well).
Hydraulic pump suction line is restricted.
Hydraulic pump suction line has an air leak.
Solenoid valve S1R1 is stuck open or damaged.
An electrical problem exists (see Chapter 5 -- Electrical System).
FC1 logic valve in control manifold is stuck open.
PRV valve in control manifold is stuck closed.
Pilot piston in control manifold is stuck or damaged.
Front section of gear pump is worn or damaged (see Gear Pump
(Front Section) Flow Test).
Cutting unit problem exists (see Chapter 7 -- DPA Cutting Units).
Hydraulic manifold reel circuit cartridge is leaking or damaged.
Hydraulic manifold orifice is plugged.
Cutting unit problem exists (see Chapter 7 -- DPA Cutting Units).
Hydraulic manifold reel circuit cartridge is leaking or damaged.
Excessive internal wear in reel motor exists (see Reel Motor Case
Drain Flow Test).
Page 4 - - 25 Hydraulic System