Lexus SC300 / Lexus SC400. Service manual - part 328

Hydraulic Motor

COMPONENTS FOR REMOVAL AND
INSTALLATION

–

COOLIING SYSTEM

Electronically Controlled Hydraulic Cooling Fan
(Hydraulic Motor)

CO–47

REMOVAL OF HYDRAULIC MOTOR

(See Components on page 

CO–47

)

1. REMOVE 

BATTERY

CAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ”LOCK” position and the negative (–) termi-
nal cable is disconnected from the battery.

2. 

REMOVE ENGINE UNDER COVERS

3. 

DRAIN ENGINE COOLANT (See page 

CO–6

)

4. REMOVE 

RADIATOR 

RESERVOIR 

TANK

(a)  Disconnect the coolant level sensor connector.
(b)  Disconnect the following hoses:

(1)  Reservoir hose from water inlet housing
(2)  Reservoir hose from radiator

(c)  Remove the two bolts and reservoir tank bracket.
(d)  Disconnect the reservoir tank from the reservoir tank

bracket, and remove the reservoir tank.

5. DISCONNECT 

HOSES

Disconnect the following hoses:

(1)  Upper radiator hose from radiator

(2)

Pressure hose from hydraulic motor

(3)

Return hose from hydraulic motor

CO–48

–

COOLIING SYSTEM

Electronically Controlled Hydraulic Cooling Fan
(Hydraulic Motor)

6.  DISCONNECT COOLING FAN INLET PIPE FROM FAN

SHROULD
Remove the two bolts, brackets and bushings, and discon-
nect the inlet pipe.

7. 

DISCONNECT COOLING FAN RESERVOIR TANK FROM
FAN SHROULD
(a)  Disconnect the suction hose from the clamp on the fan

shrould.

(b)  Remove the four bolts, and disconnect the reservoir

tank.

8. REMOVE 

RADIATOR 

FAN 

SHROULD

(a)  Disconnect the wire clamp (for temperature sensor)

from the radiator fan shrould.

(b)  Remove the four bolts, and disconnect the fan shrould

from the radiator.

(c)  Slightly lift the fan shrould, and disconnect the two oil

cooler hoses (for cooling fan) from the hose clamp on
the fan shrould.

(d)  Remove the fan shrould.

–

COOLIING SYSTEM

Electronically Controlled Hydraulic Cooling Fan
(Hydraulic Motor)

CO–49

9. 

REMOVE COOLING FAN FROM HYDRAULIC MOTOR
Loosen the pulley nut clockwise, and remove the nut, plate
washer and fan.

10.  REMOVE HYDRAULIC MOTOR FROM FAN SHROULD

Remove the three bolts and hydraulic motor.

COMPONENTS FOR DISASSEMBLY AND
ASSEMBLY

CO–50

–

COOLIING SYSTEM

Electronically Controlled Hydraulic Cooling Fan
(Hydraulic Motor)