PREVOST H3-41 Maintenance Manual page 630

SECTION 18a: H3 SERIES BODY
damper is adjusted or not by keeping it
closed and gently turning further CCW,
counting at the same time the half-turns until
a stop is felt. Stop turning and do not force.
4. While keeping the damper closed, make two
CW half-turns. In case of prior adjustment,
add the number of half-turns previously
counted. The total range is about five half-
turns.
5. Pull the damper out vertically without turning
for at least 3/8" (1cm) to disengage the
adjusting mechanism. The dust cap or
piston rod may now be turned freely.
NOTE
Where a bump rubber was installed, refit same
inside the dust cap and by fully closing the
damper, the rubber will seat again at top of the
dust cap. Refit the split plastic collar E (Figure
17)
6. The damper can now be refitted in the
vehicle.
7. Reinstall panels and entrance door hinge
cover.
FIGURE 17: DAMPER
10.4 HORIZONTAL AND VERTICAL
ADJUSTMENT
Before attempting to correct any door operating
problem by adjusting any part of the air cylinder
26
PA1621 Maintenance Manual All Series
assembly, first perform the following mechanical
checks and procedure.
Check around the perimeter of the door for
binding.
follows:
1. Remove the screws and the plastic molding
covering each of the hinges.
NOTE
Ask an assistant to help you to perform the
following adjustments.
2. Remove the Allen button head screw and
the washer retaining the rod end with
bearing to the upper hinge. See Figure 18.
3. Support the door with a wooden block and a
hydraulic jack.
4. Loosen the horizontal bolts retaining the
door
horizontally and vertically with the jack.
Tighten the bolts.
TORQUE: 55-65 lb-ft (75-88 Nm)
5. Remove the jack and the wooden block.
CAUTION
Make sure the entrance door does not
interfere with the exterior panel.
FIGURE 18: UPPER DOOR HINGE (COACH)
6. Pull and fasten the rod end to the hinge with
the washer and the button screw.
7. Screw the plastic moldings covering the
hinges.
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Revised Sept 2019
If any binding is found, adjust as
to the hinges. Adjust the door
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