Content .. 32 33 34 35 ..

Freightliner Cascadia. Manual - part 34

sleeper access door, if equipped. Removal of
trim panels is not required.

NOTE: Removal of trim panels is not required.

f720661a

05/11/2012

Sleeper Access Door Handle

Baggage Door Handle

Cab Door Frame, Driver Side

Fig. 2, Baggage Door and Sleeper Access Door

Release Handles

05/07/2012

f602471

NOTE: Baggage door latch shown. Sleeper access door
latch is similar.

A. Lubricate the latch jaws and the exposed length of

cable.

Fig. 3, Baggage Door Latch

Cab

60/2

MOP Number

Air Conditioner Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83–01

Air Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83–02

ParkSmart

™

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83–03

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83–00

Heater and Air Conditioner

Index, Alphabetical

83–00 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.

83–01 Air Conditioner

Inspection

WARNING

Wear eye protection, gloves, and protective cloth-
ing when working on the air conditioning system.
Leaking refrigerant from a damaged hose or line
could cause blindness or serious skin burns.

Preliminary Checks

Park the vehicle on a level surface, apply the
parking brakes, and chock the tires.

Check the appearance of the air conditioner
compressor pulley assembly. If the friction sur-
face of the pulley shows signs of excessive
grooving due to belt slippage, replace both the
pulley and the drive plate. Inspect the refrigerant
compressor drive belt for damage and check that
the belt is set at the proper tension. Also check
the tightness of the compressor mounting fasten-
ers. For instructions and torque values, see
Group 01 of the Cascadia

™

Workshop Manual.

Inspect the drive plate. If the drive plate shows
visible signs of damage due to excessive heat,
replace the drive plate and pulley assembly. For
removal and installation procedures, see Group
83 of the Cascadia

™

Workshop Manual.

Using a feeler gauge, check that the drive plate
clutch clearance is within limits. See

Table 1

for

clearance specifications. See

Fig. 1

for the

checking method. If the drive plate clutch re-

quires adjustment, see Group 83 of the Casca-
dia

™

Workshop Manual.

Compressor Drive-Plate Clutch Clearance

Manufacturer

Clearance: in (mm)

Sanden

0.016 to 0.040 (0.4 to 1.0)

Denso

0.014 to 0.024 (0.35 to 0.60)

Table 1, Compressor Drive-Plate Clutch Clearance

Inspect the compressor clutch coil wire. Check
that the connector is not damaged or loose. Re-
place the wire if it is damaged.

Check the overall condition of the air conditioning
hoses. Look for cracks, cuts, and abrasions on
the hoses. Replace damaged hoses. For re-
placement instructions, see Group 83 of the
Cascadia

™

Workshop Manual. Also check for

loose fittings on all of the air conditioning compo-
nents.

Check for a buildup of road debris on the con-
denser fins. For cleaning instructions, see Group
83 of the Cascadia

™

Workshop Manual.

83–02 Air Filter Replacement

The HVAC system has three filters that must be re-
placed periodically to maintain proper system opera-
tion. The cabin fresh-air-intake filter is accessed from
under the hood, and the recirculation filter is ac-
cessed from inside the cab. The sleeper air filter is
accessed through an access panel on the cabinet
behind the driver’s seat.

08/25/94

f830641

Check clearance in three equally spaced places.

Fig. 1, Drive-Plate Clearance Inspection

Heater and Air Conditioner

83/1

Cab Fresh-Air Filter
Replacement

IMPORTANT: When replacing the air filter, use
only a Freightliner-approved air filter.

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

Open the hood.

Remove the intake screen. See

Fig. 2

Lightly press on the filter tray handle to disen-
gage the lock (see

Fig. 3

), and slide the tray out

of the slot in the plenum.

Remove the filter from the tray. Note the airflow
directional arrow on the filter’s edge. When prop-

erly installed, the airflow arrow will point in the
same direction as the marking on the front edge
of the tray. Both will point toward the cab. See

Fig. 4

Put a new filter in the tray, making sure the air-
flow arrow is correctly oriented, and install the
tray in the slot in the plenum. Make sure the tray
locks into position.

Install the intake screen.

Return the hood to the operating position.

Cab Recirculation-Air Filter
Replacement

The recirculation air filter is located on the "back"
side of the evaporator housing, in the corner formed
by the frontwall and the right side of the cab. It is
accessed from the underside of the unit. It is a
coarse sponge, or fiber, filter. See

Fig. 5

IMPORTANT: When replacing the air filter, use
only a Freightliner-approved air filter.

NOTE: Filter replacement is done "blind."

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

05/15/2007

f831714

Fig. 2, Intake Screen

04/10/2007

f831716

Fig. 3, Disengaging the Lock

04/10/2007

f831717

Airflow Directional Arrow Orientation

Fig. 4, Airflow Directional Arrow

Heater and Air Conditioner

83/2

Content .. 32 33 34 35 ..