freightliner Custom Classic MT45 2022, Руководство по обслуживанию

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01–00 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 or motor, 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 cannot drop. Failure to follow these
steps could result in serious personal injury or
death.
01–01 Engine-Support
Fasteners Checking
Check the front and the rear engine-support fasten-
ers for tightness. See
Fig. 1 . See Chapter 18 of the
Walk-In Van Chassis Operator’s Manual for torque
specifications, or take the vehicle to an authorized
Freightliner dealer.
01–02 Engine Drive Belt
Inspecting
WARNING
The engine and the belt must be cool before you
check the belt. Handling a hot belt can cause per-
sonal injury.
Worn or loose drive belts may cause premature
bearing failure or engine overheating. Excessive ten-
sion, or too little tension on the belt may result in ex-
cessive and premature belt wear. Poly-V belts, or
serpentine belts, are retained by a belt tensioner that
requires no tension adjustment. Replace the engine
drive belt if any conditions described in the visual
description are found. V-belts are installed as indi-
vidual belts, and as matched sets. When replacing a
matched set of belts, always replace both belts at the
same time. Matched belts must be from the same
manufacturer. To inspect a belt, gently twist the belt
to view the belt sidewalls and bottom. Visually in-
spect all drive belts for the following conditions, then
perform the belt tension inspection.
Visual Inspection
1. Inspect the belt for glazing. See Fig. 2 , Ref. A.
Glazing is represented by shiny sidewalls, and is
caused by friction created when a loose belt slips
in the pulleys. It can also be caused by oil or
grease contamination on the pulleys.
2. Check the belt for ply separation. See Fig. 2 ,
Ref. B. Oil, grease, or belt dressing can cause
the belt to fall apart in layers. Repair any oil or
coolant leaks that are affecting the belts before
replacing the drive belts. Do not use belt dress-
ing on any belt.
3. Check the belt for a jagged or streaked sidewall.
See
Fig. 2 , Ref. C. Jagged or streaked sidewalls
are the result of foreign objects, such as sand or
gravel in the pulley, or a rough pulley surface.
4. Check for tensile breaks (breaks in the cord
body). See
Fig. 2 , Ref. D. Cuts in a belt are usu-
ally caused by foreign objects in the pulley, or by
prying or forcing the belt during removal or instal-
lation.
5. Check for uneven ribs on serpentine (poly-V)
belts. See
Fig. 2 , Ref. E. Foreign objects in the
f220047a
1
2
3
4
5
6
2
10/05/94
1. Lower Isolator
2. Engine Support
Washer
3. Capscrew
4. Hexnut
5. Engine Mount
6. Upper Isolator
Fig. 1, Engine Mount (rear)
Engine
01
Walk-In Van Chassis Maintenance Manual, May 2022
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