MCi Crusader II 1989 Maintenance Manual page 78

Date
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MC-9 MAINTENANCE MANUAL
For deep scratches and gouges. the window surface must
be removed and the substrate repaired for the most effective
repair_ Such procedures have not been developed by the
manufacturer.
For all lacquer-repaired acrylic windows. the repaired area
will exhibit less abrasion resistance than the surrounding sur-
face area.
Lucite® and Evalcite® are trademarks of the DuPont Company.
LIFTING AND TOWING
· ·TMC/MCI has available an I-beam frame assembly which
can be used for lifting and towing. The dolly (part No. 20-300) is
recommended whenever a coach is to be towed with the front
wheels off the ground. It is shown in Figure 3-4.
CAUTION: The following procedure ex-
plains the use of the dolly developed for use
by authorized and experienced tow truck
operators to IIH and tow only the affected
coach models. This tool and procedure are
NOT approved for any other coach models
or applications. Prior coach models have
not been approved for lifting and towing.
Also, this procedure explains only the
recommended method to attach the tool to
the coach.
It
does not attempt to explain or
instruct personnel in all conceivable proper
methods and details for safe IIHlng and tow-
ing
of
buses. TMC and MCI recommend
that this tool and procedure be used only
by tow truck operators authorized and
experienced in towing intercity coaches.
TMC/MCI cannot be responsible for the
improper use of this equipment by Inexpe-
rienced or unauthorized individuals.
Figure 3-4. Lift Dolly Chain Placement.
To use the frame, you will need to have a hardwood plank for
placement between the coach undercarriage and the lifting
tool. See figure 3-5. The dimensions of the plank are minimum
4" high x 8" wide x 60" long.
LIFTING PROCEDURE
Read the entire procedure before starting step 1.
1. Remove both drive axle shafts to prevent transmission
damage.
2. On three-axle coaches. shut off the trailing axle air valves.
They are located inside the right engine side compartment
3. If the coach engine will not be operating during the tow,
attach an external air pressure line. from the tow truck, to the
emergency air fill valve in the front service compartment under
the driver's floor. The air pressure must be a minimum of 75 psi.
and the line should be attached with a clip-on air chuck affixed
to the air line.
SAFETY HOOK
Figure 3-5. Dolly and Plank Position.
CAUTION: Do not tow the coach without
external air pressure applied to the emer-
gency air fill If the coach engine will not be
operated. Without brake system air pres-
sure, the brakes may apply automatically If
system
air
pressure falls to approximately
40 psi.
4. Spread the tow truck lifting chains under the front area of
the coach in an "X" configuration. Approximately two feet of the
end of the typical tow truck chain should extend out from under
the coach, past the bumper.
5. Roll the lift frame under the coach (over the chains) until
the front shield is below, and slightly in front of, the coach
bumper. The frame must be laterally centered under the coach
center line.
6. Raise the rear of the lift frame until it contacts the coach
undercarriage near the front of the radius rods. Support the rear
of the frame in this position.
7. As shown in figure 3-5. wrap the tow chains around the
radius rods in the following manner:
a. Bring each chain up through the "D" ring on the lift
frame.