PREVOST X3-45 Multiplex, Руководство по обслуживанию

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Section 18: BODY
PA1562
38
CAUTION
Use of lubricants, paints, or other coatings
such as graffiti deterring sprays is not
recommended.
Suggested maintenance includes periodic
inspection of fasteners for evidence of loosening
due to tampering, and regular cleaning with mild
soap and water.
Although there are other cleaning solutions
available, some contain solvents and other
chemicals that can attack the high strength
materials used in the production of the escape
hatch.
CAUTION
Ensure that cleaning solutions are compatible
with the materials used on the escape hatch.
Graffiti removing cleaners often contain acetone,
ether, lacquer thinner or other solvents known to
destroy the high strength properties of many
plastics. Use of these cleaners must be avoided.
Graffiti-resisting coatings often leave a sticky
residue that interferes with smooth up/down
movement of the hatch mechanism. Some of
these coatings also contain solvents that will
reduce the strength of certain components.
CAUTION
Use of these coatings is at considerable risk
and should be avoided.
8.3.1 Repair
All components used in the production of the
escape hatch are available as service parts,
except for one hinge that represents a possible
hazard when improperly reattached to a hidden
tapping plate, itself often damaged whenever the
hinge is damaged. The tapping plate is
permanently laminated between the inner and
outer cover assemblies, and it cannot be
inspected or replaced. It is therefore necessary
to replace the entire assembly following damage
to the hinge. See figure 25.
CAUTION
Hinge assembly is critical and hinge should
never be removed from cover assembly.
Fasteners used in this assembly are special
and have critical torque requirements and
tamper-resistant heads to discourage
tampering.
8.3.2 Sealing
1. Open and tilt up the escape hatch cover.
2. Join the 2 ends of the rubber seal.
CAUTION
Seal joint should be toward rear of vehicle.
3. Apply rubber adhesive CA-40 (Prévost #
681285) in the gap between the seal ends.
4. Apply Sikaflex 221 sealant (Prévost #
680532) along the outline of the escape
hatch on the roof of vehicle.
FIGURE 27: ESCAPE HATCH
18104
8.3.3 Escape Hatch Panel Assembly
The frame of the escape hatch is riveted to the
roof of the vehicle. The escape hatch panel
assembly can be replaced as a unit and a new
panel assembly installed in the existing frame.
To remove the panel assembly, remove the 4
bolts fastening the 2 hinges to the escape hatch
frame and retain the 4 flat washers. Reinstall the
panel assembly by fastening the 2 hinges with
the 4 bolts and flat washers removed earlier.