MCi Crusader II 1989 Maintenance Manual page 104

Date
1-1-89
Page · ___
3-_29 _ _
MC-9 MAINTENANCE MANUAL
In the event that an electrical malfunction occurs while the
operator is 04tside the vehicle, the above dump valve can also
be. controlled from outside the vehicle. A push-pull control
cable is located in the left front electrical junction box (figure
3-26).
The control cable can be reached by opening the exterior
junction box access door. By pulling the black knob to full out
position. the air dump valve described above is actuated to the
exhaust position. The door panels can then be manually pulled
to the open position from outside the vehicle.
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Figure 3-26. External Push-Pull Air Dump Valve Control.
STEPLIGHT - PRESSURE SWITCH
Automatic actuation of the steplight is provided by means of
a pressure-type switch in the door control air system. The
pressure switch is installed in the air line to the slave cylinder.
With the steplight and chime switch in the "on" position, and
with door in open position. air pressure is exhausted out of the
slave cylinder line. The loss of pressure energizes the switch
and illuminates the steplight Conversely, when the door is in
closed position. air pressure is present in the slave cylinder line
and the pressure switch "breaks" to put the steplight off.
In the open position, the steplight pressure switch can be
overruled to turn the steplight off by selecting "off" position
with the steplight and chime switch.
ADJUSTMENT PROCEDURES
FRONT REAR
PlllAR PlllAR
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OUTBOARD
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ADDITIONAL SHIMS
HERE (IF REQ'D}
ADDITIONAL SHIMS
HERE (IF REQ'D)
Figure 3-27. Adjustment of Upper Brackets.
1. Refer to figure 3-27. Check fore and aft· dimension
between shaft centers. Centers should measure 29.00 in.
(736.6 mm). If centers are less than 29.00 in. (736.6 mm),
remove shims between brackets and spacers.
NOTE: Always shim both brackets equally
to keep shafts centered in door opening.
2.
Conversely, if the center distance between brackets is
greater than 29.00 in. (7.36.6 mm) in addition to the standard
spacer, a shim pack of the correct thickness should be added.
Insure that both brackets are shimmed equally.
INSTALLING REAR SHAFT ASSEMBLY
1. Place bottom of rear shaft assembly through bore of lower
rear bearing assembly until upper pin of shaft can be inserted
through bottom of spherical bearing in upper bracket.
2. Lift shaft until shoulder seats on bottom of spherical
bearing.
3. Install self-locking nut on top of shaft.
INSTALLING FRONT SHAFT ASSEMBLY
Follow same procedure for installation for front shaft as for
rear shaft. above.
INSTALLATION - SHAFT BEARING BLOCKS
1. Select a matched set of reamed bearing blocks. Position
base block between shaft and mounting bracket. Shim between
base block and bracket as required.
2. Position cap block over shaft and align mounting holes.
Install capscrews with lockwashers and nuts on rear of
brackets.
This procedure is the same for both the front and rear shafts.
INSTALLATION - BOTTOM LINKAGE
1. Tighten all lower bearing mounting nuts below bottom
step.
2. Slide bearing locking collar up shaft into contact with
bearing.
3. Rotate collar until tight
4. Tighten set screw in rocking collar.
5. Install woodruff keys in keyseats on shafts.
6. On rear shaft. align keyway in lever arm. with key in shaft
and slide arm up shaft until approximately
'!Is
inch (1.5 mm) of
shaft protrudes through bottom of arm. Tighten capscrews in
lever arm to lock arm on shaft. ·