MCi Crusader II 1989 Maintenance Manual page 100

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MC-9 MAINTENANCE MANUAL
arm. Locate the adjusting nuts behind the upper hinge cover.
Loosen the upper jam nut Rotate the lower nut either up or
down. depending on the desired door movement Once the
adjustment is completed, tighten the top jam nut
If the entrance door bottoms out. a second adjustment may
be made at the lower hinge arm. Two screws are located atthe
slotted holes on the lower hinge arm. To lower the door further,
loos~n the screws. lower the door the necessary amount. and
tighten the screws.
CONTROL ROD - The entrance door control rod may be
adjusted with a lock type turnbuckle. Turnbuckle is accessi-
ble by an access door at the top right hand side of dash.
Tighten nuts after desired adjustment is obtained.
If further adjustments are necessary, remove target panel
at front below windshields, the jam nut at uniball end can be
loosened and·adjustments can be made by turning uniball end
in or out as required. To retighten jam nut. it may be necessary
to use a vise grip or a pipe wrench to hold control rod from
turning.
CAUTION: Control rod bend at uniball
end must point toward rear of coach when
adjustment is completed.
CONTROL HANDLE - The oopen-lock and closed-lock
positions can
be
adjusted. Viewing linkage from underside of
dash, proceed as follows:
1. Loosen jam nuts on stop screws protruding from the
control handle lever.
2. Turn stop screws in or out to desired setting.
3. Tighten jam nut and check adjustment by moving con-
trol handle from open lock to closed-lock positions.
Properly adjusted mechanism will swing over center and
lock door firmly in both fully-open or closed positions.
MICROSWITCH - This can be adjusted if it does not
energize or de-energize at correct times. The mounting
bracket of the switch has slotted holes allowing itto be moved
backward or forward. By loosening the mounting bolts, the
bracket and switch can be set to a position where it will
energize at correct position of lever and entrance door.
CAUTION: Switch must energize when
entrance door is .fully closed. If switch is
set too far forward, it would energize and
actuate the solenoid valve, which in turn
controls the air cylinder, before the door
is fully closed. If switt,h is set too far back,
it would not be actuated and the door
would not lock.
DOOR CONTROL SOLENOID
The door control solenoid located in the spare tire com-
partment controls the air supply to the door lock cylinder.
Figure 3-21. Entrance Door Solenoid Valve Installed.
DISASSEMBLY
1. Refer to figure 3-21. Shut off pressure to the valve and
disconnect wiring harness.
2. Remove nut at top of coil cover. Cap, coil housing and
coil can then be removed from body.
3. Unscrew the sleeve assembly from the body (figure
3-22). . .
REPAIR
CAUTION: Do not use a pipe wrench, as a
wrench may crush the sleeve assembly
and make the valve inoperative.
1. If the solenoid has failed to operate, the coil should be
checked to make sure it is hot shorted or open.
2. Occasionally valves may leak at the flange seal. Such a
leak may damage the coil. A flange leak may be corrected by
tightening the sleeve assembly into the valve body and/ Qr
replacing the seal.
3. If the valve leaks at the seat. or the plunger sticks in the
energized position, examine the soft inserts in the plunger and
the inside of the sleeve assembly for the presence of excessive
dirt or wear. If the inserts show considerable wear, the plunger
should be replaced.
4. If the solenoid develops a loud buzzing noise. examine the
inside of the sleeve assembly and upper portion of the plunger.
Remove all foreign matter imbedded in these parts.
5. If the valve leaks intemally, examine the piston insert for
excessive wear. Also inspect main exhaust orifice for dirt
accumulation. scratches and nicks. Replace parts as necessary.
6. If the valve is sluggish during operation, check for dirt
accumulation or wear on both piston and piston bore. The
piston should slide freely into the piston bore without binding.
Inspect and clean all passageways of dirt