MCi Crusader II 1989 Maintenance Manual page 217

Date Page 6-18
MC-9 MAINTENANCE MANUAL
BLOWER DAMPERS - OPTIONAL
Each blower assembly .is provided with an air-operated
damper which operates In conjunction with the radiator shut•
ters to prevent the flow of air during engine warm-up. The
dampers are located
in
the outlet ducts of the blowers.
Blower damper linkage adjustment should not be necessary
unless the original adjustment is disturbed in disassembly. If an
ad1ustment Is to be made. the following method should be
followed:
1
Disconnect the air cylinder at damper control lever by •
removing the clevis pin.
2. Operate the air cylinder so that the ram is fully extended.
3. Hold the damper in the fully closed position. then adjust
the clevis until clevis pin holes line up with clevis pin hole in the
damper lever.
4. Reconnect the air cylinder to the damper control lever by
inserting the clevi_s pin.
5. Operate the dampers several times to check opening and
closing. II dampers are not closing properly, remove clevis pin
and unscrew clevis h turn. reinstall clevis pin and check clos-
ing again: repeat as necessary
½
turn per time until dampers
are closing with a slight pressure.
Worn linkage parts or air cylinders should be replaced.
Lubricate at pivot points at regular chassis intervals with a
rust-prev~ntive oil.
ELBOW· 90°
CYLINDER HEAD ASSEMBLY· INLET
JAM NUT
PISTON HEAD
FOLLOWER
BARREL· AIR CYLINDER
SPRING
BRACKET
BRACl<ET
3 /1"
DIA. HOLE
/
BRACKET
½"'
DIA. HOLE
RETAINER DUST CAP
Figure 6-24. Blower Damper
Air
Cylinder.