MCi Crusader II 1989 Maintenance Manual page 101

Date 1-1-89
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MC-9 MAINTENANCE MANUAL
REASSEMBLY
1. Reassemble the valve by following the disassembly
procedure in reverse order. Make sure the seal atthe flange end
of the assembly and the return spring are in place when the
sleeve is screwed into the body.
2. After screwing the flange into the body and before assem-
bling the coil to the valve. it is advisable to apply air pressure to
the part which leads to the body chamber and check tor leak-
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1. Adapter
2. Adapter Seal
3. Nut
4. Nameplate
5. Coil I
Housing
Any.
6. Sleeve Any.
7. Coil Spring
8. Plunger Assy.
9. Flange Seal
10. Body Blank
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Figure 3-22. Entrance Door Solenoid.
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age around the flange. If the valve has a sleeve port, this port at
the top of the valve must be capped to make this test If the
medium is air or gas, leakage can be noted by applying water to
the joint and watching for air bubbles. If the medium is liquid,
leakage is readily apparent
CAUTION: Do not excessively tighten the
nut at the top of the coil housing, since
doing so will put undue strain on the sleeve
auembly. •
ENTRANCE DOOR AIR CYLINDER
DESCRIP.TION
The entrance door air cylinder is a single-acting type
which holds the door in the closed and locked position during
coach operation.
MAINTENANCE
It is recommend~d that the entrance door air cylinder be
lubricated at regular intervals, approximately every 30,000
miles (48,000 km). The recommended procedure is as follows:
Remove air feed hose and put in a few drops of SAE-30 engine
oil into the cylinder through air hose connector. Reconnect
the feed hose, reverse the air supply to the cylinder; this will
lubricate the other end of the cylinder. Check air cylinder for
leaks. It should also be noted that when overhauling air
cylinder, it is important to replace all seals, felts, cups and
O-rings with new parts for proper operation. Also, when over-
hauling air cylindker the new parts should be coated with
SAE-30 oil before assembly.
ADJUSTMENT
The entrance door air cylinder can be adjusted to provide
close fitting of door. If door vibrates or is not locked firmly in
position, make adjustments in the following manner.
1. Remove panel on rear wall of stepwell to gain access to
air cylinder.
2. Remove cotter pin and yoke pivot pin to free yoke at
anchor end of air cylinder.
3. Loosen jam nut and turn yoke to lengthen or shorten
stroke of piston rod as necessary.
4. Tighten jam nut and reassemble.
Further adjustments can be made to provide a closer fit
between latch nose and latch pad. Slotted holes are provided
in the latch nose mounting for this purpose. To adjust. loosen
the mounting bolts and set latch nose at the desired position.
Retighten bolts.
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