Table of Contents
Advertisement
\.ccu;;;aaer
MAINTENANCE
MC-8
[ "G'-6~-1~1 _ _ _
DAJE__,D=e=ce' - ' - -' - -"mb~er~,
-' - -"---19~73_]
MANUAL
the coach at a height which minimizes intake of dust
and road dirt.
The radiators are designed to cool the coolant
solution under all operating conditions; however, the
radiator core must be kept free from corrosion and
scale at all times in addition to the maintenance of
other cooling units to obtain satisfactory service.
Cleaning of radiators, inspection of connections and
mountings, and use of corrosion preventives are
essential periodic service procedures.
Radiator core should be periodically cleaned in-
side and out in a cleaning solution. Examine core for
leaks and bent tubes, and repair if necessary. If the
core requires painting, spray with special radiator
paint. Do not use paint mixed with oil, as this type
will form
an
insulation
on core and
prevent
dissipation
C1f
heat.
BLOWER DAMPERS
DESCRIPTION
Each blower assembly is provided with an air-
operated damper which operates in conjunction with
the radiator shutters 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 adjustment is to be made the
following method should be followed:
(l)
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 clevis pin.
l. Blower Damper Air Cylinder
2. Blower Belt Adjusting Air Cylinder
3. Blower Damper
Figure 6-6: Blower Damper Air Cylinder
Installed
(5) Operate the dampers a few times to ch~ck
opening and closing. If dampers are not closing
properly, remove clevi~ pii:1 and unscrew cle_vis
I /2 turn, reinstall clevis pm and check closing
again, repeat as necessary 1 /2 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 in-
tervals with a rust preventative oil.
BLOWER GEAR BOX
DESCRIPTION
The cooling blowers are located in a housing above
the engine compartment. Blower wheels are mounted
on a bevel gear box which is driven by means of a V -
belt from the engine crankshaft. Air is discharged
through openings into the engine compartment.
MAINTENANCE
The blower drive gear box is lubricated by means
of a quantity of lubricant in the gear housing. A sight
gauge is provided to check the level of lubricant.
Regular service checks should be made to assure that
proper oil level is in the cooling blower gear box.
The correct oil level is when oil is visible halfway in
the sight glass. If the oil is not visible or level does
not show when adding oil, the following steps are
recommended to provide correct readings:
(A) Remove the oil hose end at vent fitting at top of
the blower gear box.
(B) Force air pressure through this end of hose to
clear hose, sight gage and hose from sight gage to
the rear lower part of the blower gear box. This
will free hoses from dirt or foreign matter and
allow oil to flow to sight gage providing a level
reading.
l . Blower Gear Box Assy.
2. Blower Gear Box Filler Tube
3. Sight Gauge
4. Blower Pulley
Advertisement
Table of Contents
