To Next Page

To Previous Page

Reelmaster 7000−DHydraulic System Page 5 − 36

Engine Cooling Fan Circuit Problems

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Problem

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Possible Cause

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Cooling fan runs only in forward di-

rection (fan does not run in reverse

direction).

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Fan control manifold solenoid cartridge valve (S1) is faulty.

Electrical problem exists that prevents fan control manifold solenoid

valve (S1) operation (see Chapter 6 − Electrical System).

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Cooling fan does not rotate.

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Fan motor is worn or damaged.

Gear pump section (P5) is worn or damaged.

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Cooling fan always rotates at slow

speed.

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Fan control manifold cartridge valve seals are leaking.

Check valve in fan control manifold is not seating.

Fan control manifold proportional relief valve (PRV) is stuck open.

Hydraulic fan motor is worn or damaged.

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Cooling fan always rotates at fast

speed.

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Fan control manifold proportional relief valve (PRV) is faulty.

Electrical problem exists that prevents fan control manifold propor-

tional relief valve (PRV) operation (see Chapter 6 − Electrical Sys-

tem).

Toro 03721 Service Manual

Other manuals for Toro 03721