Freightliner Cascadia. Manual - part 9

NOTE: The fan clutch may slip if the air supply
pressure is below 70 psi (483 kPa) or if there is
a leak inside the fan clutch. Any leak must be
remedied.

11. Check the fan clutch bearings as follows.

11.1

Turn the fan in both directions and feel
for worn hub bearings.

11.2

If possible, remove the drive belt and
check for worn sheave bearings by turn-
ing the sheave in both directions.

11.3

If either the hub or sheave bearings are
worn, replace them, using a Horton Drive-
Master Super Kit; see Group 20 of the
vehicle Workshop Manual.

f200581

05/30/2002

Fig. 8, Checking for Air Leaks (Horton DriveMaster)

Engine Cooling/Radiator

20/5

MOP Number

Clutch Release Bearing Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–01

Clutch Replacement, Detroit

™

Automated Transmissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–04

Fluid Change, Hydraulic Clutch Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–03

Fluid Level Check, Hydraulic Clutch Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–02

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–00

Clutch

Index, Alphabetical

25–00 Safety Precautions

Safety Precautions in this section apply to all
procedures within this group.

DANGER

When working on the vehicle, shut down the en-
gine, set the parking brake, and chock the tires.
Before working under the vehicle, always place
jack stands under the frame rails to ensure the
vehicle can not drop. Failure to follow these steps
could result in serious personal injury or death.

25–01 Clutch Release Bearing

Lubrication

The standard clutch release bearing is not sealed,
and requires lubrication. Lubricate the bearing, as
follows.

NOTE: On vehicles equipped with Detroit trans-
missions, the release bearing does not need to
be lubricated. On vehicles equipped with Eaton
Fuller UltraShift PLUS transmissions, lubricate
the release bearing every 50,000 miles (80 000
km) or 3 months.

Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires.

Remove the clutch inspection plate to see the
release bearing while lubricating it. See

Fig. 1

Clean the grease fitting. On some vehicles a
lube tube will be used, and the fitting may be at
the 9-o’clock position on the left side of the bell-
housing (see

Fig. 2

NOTICE

Do not over-lubricate the clutch release bearing.
Over-lubrication could contaminate the clutch in-
ternally, causing clutch slippage and premature
failure. Do not use chassis grease or multipurpose
lubricants.

Using a pressure-type grease gun, lubricate the
release bearing with NLGI Grade 3 grease until
excess grease purges from the rear of the re-
lease bearing (toward the transmission).

Install the clutch inspection plate.

25–02 Fluid Level Check,

Hydraulic Clutch Control

WARNING

Use only approved fluid (DOT 4 brake fluid) in the
hydraulic clutch control system. Do not mix differ-
ent types of brake fluid. The wrong fluid will dam-
age the rubber parts of the system, causing loss
of clutch function and the risk of serious personal
injury.

06/22/2007

f250662

Fig. 1, Typical Clutch Inspection Plate

05/07/2007

f250663

Grease Fitting

Left Engine Mount

Fig. 2, Typical Release Bearing Grease Fitting

Clutch

25/1

Hydraulic clutch control fluid is hazardous. It may
be a skin irritant and can cause blindness if it gets
in your eyes. Always wear safety glasses when
handling it or bleeding hydraulic lines. If you get it
on your skin, wash it off as soon as possible.

NOTICE

Do not spill hydraulic clutch control fluid on the
cab paint. Clean it off immediately if any is spilled.
Brake fluid can damage paint.

Do not allow the fluid level in the reservoir to go
below the MIN line. If air enters the system, the
hydraulic system will not operate correctly, and
the clutch could be damaged.

If the fluid level is below the MIN line, fill the reser-
voir with new DOT 4 brake fluid from a tightly sealed
container until the level reaches the MAX line. See

Fig. 3

25–03 Fluid Change, Hydraulic

Clutch Control

Replace the hydraulic clutch control fluid to ensure
clutch function is reliable and correct. It can be
changed by pressure bleeding or manual bleeding.
Pressure bleeding can be done by one person and
manual bleeding requires two.

WARNING

Hydraulic clutch control fluid (DOT 4 brake fluid)
is hazardous. It may be a skin irritant and can
cause blindness if it gets in your eyes. Always
wear safety glasses when handling it or bleeding
hydraulic lines. If you get it on your skin, wash it
off as soon as possible.

NOTICE

Do not spill hydraulic clutch control fluid on the
cab paint. Clean it off immediately if any is spilled.
Brake fluid can damage paint.

IMPORTANT: The pressure line must slope con-
tinuously downward between the master and
slave cylinders. On some vehicles, the securing
clamps may need to be removed to achieve this
and allow the air to be purged.

Pressure Bleeding

NOTE: A bleeder system (J-29532) and a bleed
adaptor (J-35798) for the fluid reservoir are
available through SPX Kent-Moore Tools and
may be used to complete the following proce-
dure. To order these parts, call Kent-Moore at
1-800-328-6657.

Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires and raise the hood.

Prepare the pressure bleeding equipment ac-
cording to the manufacturer’s instructions. Use
new DOT 4 brake fluid from a tightly sealed con-
tainer. Pressurize the bleeder system to 15 psi
(103 kPa).

10/25/2011

f250691

Fig. 3, Reservoir, Hydraulic Clutch Control

Clutch

25/2

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