MCi MC8 Crusader 1977 User manual

56008
operator's
manual
COACH INFORMATION NETWORK
www.coachinfo.com

NOTICE:
THIS
IS
A PHOTOCOPY
REPRODUCTION OF A
PUBLICATION THAT
IS
OUT OF PRINT.
THEREFORE SOME
DEGRADATION OF COPY
IS
TO BE EXPECTED.

TO THE DRIVER
This
manual
has been
prepared
to give you the necessary
information
to successfully
operate
the
CRUSADER
MODEL
MC-8
Intercity
Coach
with a
standard
or
automatic
transmission
installation.
To
obtain
the most satisfactory coach
performance
and
assure
your
passengers
maximum
safety
and
comfort,
complete
knowledge
of
your
coach
and
its
correct
operating
practice
is
important.
This
manual
contains
information
useful in
normal
operation
or
when
emergencies
or
abnormal
conditions
oc-
cur.
Any
malfunction
which
interferes
with satisfactory
operation
of
the coach
should
be
reported
to
responsible
service
personnel
for
immediate
attention,
particularly
if
safety may be affected.
DRIVING CONTROLS
All
hand
and
foot
controls
used in the
normal
operation-
of
the
coach,
and
all gauges,
tell-tale
lights
and
switches
are
located
in the
driver's
compartment.
They
are
so
arranged
as to be
conveniently
reached
by you while in the
driver's
seat.
These,
as well
as
other
controls
and
equipment
which you
may need to use
under
abnormal
or
emergency
conditions,
are
described
and
illustrated
throughout
this manual.
Information
is
included
concerning
minor
service
and
maintenance
procedures
with which you
should
be familiar.
The
Mork
of
Re1-ponsibility
MOTOR
COACH
INDUSTRIES, INC.
PEMBINA D NORTH DAKOTA D U.S.A.
IN
CANADA-
MOTOR
COACH
INDUSTRIES LIMITED
1149 ST. MATTHEWS AVENUE
D
WINNIPEG
D
MANITOBA
R3G
OJ8
JULY, 1977
PRINTED
IN
CANADA
1

OPERATOR'S COMPARTMENT
The above operator's compartment ap-
plies to a
coach with either a standard or
automatic transmission except symbol
lelter "L" (Clutch Pedal) which is not
applicable to an automatic tran,.
smission and symbol lelter .. K" (Gear
Shift Lever) which is a range selector
lever when an automatic transmission is
installed.
A. SWITCH PANEL ......... .
•B. P.A. SYSTEM/
MICROPHONE .......... .
c~ HORN BUTTON ......... .
D. DI~ECTIONAL SIGNAL
SWITCH LEVER ........ .
E.
INSTRUMENT PANEL .. .
F.
ENTRANCE DOOR
CONTROL HANDLE .....
•Optional
See Page 6.
Used to address passengers.
Sounds electric horn.
Used to signal turns.
See Page 4.
Opens and closes entrance
door.
2

G. WINDSHIELD WIPER
l:ONTROLS .............. .
H.
ENTRANCE DOOR LOCK
OVERRULE SWITCH ....
I. ACCELERATOR PEDAL .
J. BRAKE PEDAL ......... .
K.
GEAR SHIFT LEVER ... .
RANGE SELECTOR LEVER ...
FOR AUTOMATIC TRAN-
SMISSIONS ONLY. SEE PHOTO
Controls windshield wiper
motors.
Releases door air lock if it fails
to
do so when door control
handle is opera.ed.
Controls engine speed.
Applies service brakes.
Selects transmission gear for
standard transmission only.
L. CLUTCH PEDAL......... Engages and disengages engine
clutch with standard
transmissions only.
*M. P.A. SYSTEM VOLUME
CONTROL................ Adjusts P.A. System.
N. HEADLIGHT DIMMER
SWITCH . . . . . . . . . . . . . . . . . . Selects headlights high or low
beam.
* FOGLIGHT SWITCH
(NOT SHOWN) NEXT
TO HEADLIGHT
DIMMER SWITCH ...... .
0. SLOTTED FASTENER
KEY ..................... .
*P. AIR HORN VALVE ......
Q. DRIVER'S HEATER
WATER VALVE ........ ..
R. TURN LIGHT FLASHER.
S. DASH LIGHT CONTROL
T. WINDSHIELD WASHER
Controls foglights.
Opens all compartments closed
with slotted fasteners.
Sounds air horn.
Controls water flow to driver's
heater and defroster.
Operates turn signal lights.
Controls instrument panel
gauge lights.
CONTROL................ Operates windshield washers.
*Optional
3

U.
DRIVER'S
HEATER
AIR
CONTROL................
Selects fresh
or
recirculated
air
into
driver's
heater/
defroster
system.
V.
ILLUMINATION
CONTROL................
Controls
instrument
&
switch
panel
legend lights.
_,
_____
...
_
DRIVER'S
FRESH
W.
DRIVER'S
FRESH
AIR
GASPER
.................
.
When
opened,
allows
fresh
air
into
driver's
compartment.
X.
DRIVER'S
HEATER
OR
AIR
COND.
GASPER
.....
When
opened,
al lows
selected
heated
or
cooled
air
into
lower
driver's
compartment
area.
Al
INSTRUMENT PANEL
A
S U V
OD
X
A.
OIL
PRESSURE
GAUGE
.
8.
SPEEDOMETER
.........
.
4
Indicates
oil
pressure.
Indicates
vehicle
speed.

C. WATER TEMP.
GAUGE
..
D.
AIR
PRESSURE
GAUGE.
E.
HEADLIGHT
HI-BEAM
Indicates
engine
temperature.
Indicates
coach
air
system
pressure.
TELL-TALE
..
. . . . . . . . . . . .
Glows
when
headlight
hi-beams
are
on.
F. "HOT ENG" TELL-
TALE
. . . . . . . . . . . . . . . . . . . . . Flashes
and
buzzes when engine
overheated.
G. "LOW OIL" TELL-
TALE
. . . . . . . . . . . . . . . . . . . . . Flashes
and
buzzes when oil
pressure
too low.
*H. "LOW WATER" TELL-
Flashes
and
buzzer
operates
TALE
. . . . . . . . . . . . . . . . . . . . . when
water
level
too
low.
I.
"LOW
AIR"
TELL-
TALE
. . . . . . . . . . . . . . . . . . . . . Flashes
and
buzzes when
coach
air
pressure
too
low.
J.
TRAILING
AXLE
BELLOWS LOW
AIR
TELL-TALE . . . . . . . . . . . . . .
Glows
when
air
pressure
low
in
trailing
axle
bellows.
K. "EMERG. BRAKE"
TELL-TALE . . . . . . . . . . . . . . Flashes when
emergency
brakes
are
applied.
L.
"A/C HI-LO" TELL-
TALE
....................
.
M.
"TURN
LIGHT" TELL-
TALE
....................
.
N.
"HAZARD
WARNING"
Glows
or
flashes
when
air condition-
ing
system
malfunctions
Flashes when
turn
signals
are
on.
TELL-TALE . . . . . . . . . . . . . . Flashes when
hazard
warning
is
operated.
*O. "LOW FUEL" TELL-
TALE
. . .
..
. . . . . . . . . . . . . . . .
Glows
when fuel supply
is
low.
P.
"B.U. LITE" TELL-
TALE
...
-.
. . . . . . . . . . . . . . . . .
Flashes
when
back-up
lights
are
on.
Q.
"NOT
GEN." TELL-
TALE
. . . . . . . . . . . . . . . . . . . . .
Glows
when
generator
not
charging.
*R.
"LAV.
EM
ERG."
TELL-TALE
.............
.
S.
"HEAT
ON" TELL-
Glows
and
buzzes
if
emer-
gency
button
in
lavatory
is pressed.
TALE
. . . . . . . . . . . . . . . . . . . . . .Glows when heating system
operating.
T. "STOP LIGHT"
TELL-TALE
...•..........
*U.
"RETARDER"
TELL-
TALE
....................
.
•Optional
Glows
when
both
rear
stoplights
are
on.
Glows
when switched on.
5

•V. "FIRE ALARM"
TELL-TALE ........•.....
X. "EMERG. STOP" SWITCH
Y.
WINDSHIELD WASHER
Glows and operates buzzer.
Stops engine if master control
switch in "OFF" position
fails to do so.
CONTROL................ Operates windshield washers.
Z. WINDSHIELD WIPER
CONTROLS............... Controls windshield wiper
motors.
AA. "MASTER CONTROL"
SWITCH ................. .
BB. STARTER BUTTON &
ENGINE OVERRULE ....
•cc. FUEL GAUGE ........... .
(NOT SHOWN)
•DD. "FOGLIGHT"
TELL-TALE
............. .
Allows operation of engine and
accessories when in "ON"
position. Stops engine in
"OFF" position.
Engages
starter and in
emergency press button and
hold to overrule automatic
engine shutdown controls if
necessary to move to
safety
if automatic controls
stop engine.
Indicates amount of fuel in
tank.
Glows when switched on.
SWITCH PANEL
A. SOLENOID SHIFT
REVERSE
8. FAST IDLE .............. .
•Optional
Engages reverse solenoid for
shift into reverse
gear with
standard transmission only.
Engages engine fast idle.
6

C.
DRIVER'S
AIR
CONDITIONING
D.
DRIVER'S
HEATER/
DEFROSTER
FAN
Controls
driver's
air
conditioning
system.
SWITCH
..................
Controls
driver's
heater
and
defroster
fans.
E
PASSENGER
AIR
COND/HEATING
....
F.
COACH
HEAT
Controls
air
conditioning
and
heating
system.
CONTROL................
Controls
interior
temperature.
G.
STEPLIGHT
AND
CHIME
. . . . . . . . . . . . . . . . . . .
Illuminates
step
light
and
allows
use
of
passenger
H.
INDIRECT
LIGHTS
.....
.
I.
DRIVER'S
LIGHT
.......
.
J.
ILLUMINATION
CONTROL
...............
.
K.
DASH
LIGHT
CONTROL
*L.
LAV
A
TORY
DOOR
KEY
M.
"HAZARD"
SWITCH
.....
N.
HEADLAMPS
...........
.
0.
CLEARANCE
AND
IDENTIFICA
Tl()N
LAMPS
P.
VENT
CONTROL
KNOB
...................
.
*Q.
EMERGENCY
BRAKE
RELEASE
SWITCH
(NOT
SHOWN)
R.
AIR
DEFLECTOR
.......
.
*S.
TRAILING
AXLE
UNLOADING
SWITCH
...
(NOT
SHOWN)
•Optional
chime.
Controls
interior
indirect
lights.
Controls
light
above
driver's
compartment.
Controls
instrument
and
switch
panel
legend
lights.
Controls
instrument
panel
gauge
lights.
Locks
or
unlocks
lavatory
door.
Operates
all
front
and
rear
turn
signal lamps.
Controls
headlights.
Controls
exterior
clearance,
identifi-
cation,
license, tail
and
destination
sign lights. Also
interior
aisle
and
run-
ning lights. Allows
passenger
to
turn
on
prefocused
reading light.
Opens
or
closes
air
vent.
NOTE:
Coaches
prior
to
Unit
No.
31843 only
In an
emergency
to
release
parking
brakes
push
&
hold
to
overrule
the
parking
brakes.
Directs
air
flow to
driver
or
driver's
window.
When
engaged
unloads
air
pressure
from
trailing
axle
bellows
from
35
P.S.I.
to 15
P.S.I.
7

ALARM SYSTEM
The
coach
is
equipped
with an
alarm
system
of
"TELL-TALE"
lamps
and
in
some cases a
buzzer
signal which
immediately
warns
the
driver
of
any
abnormal
operating
conditions.
The
"TELL-TALE"
lamps
are
located
on
the
instrument
panel ,in
front
of
the
driver.
TELL-TALE
LIGHT
"LOW
AIR"
BUZZER
CONDITION
"HOT.
ENG."
*"LAV.
EMERG."
"EMERG.
BRAKE"
"LOW
OIL"
PRESSURE
"NOT
GEN."
"HI-BEAM"
*"FOG
..
"STOP
..
"B.U."
*"FIRE
ALARM"
*"LOW
WATER"
*"LOW
OIL
LEVEL"
-
*"LOW
FUEL
LEVEL"
"TRAILING
AXLE
BELLOWS"
"A/C
HI-LO"
Yes
Air
pressure
low
Yes Engine
overheated
Yes
Emergency
in
lavatory
Emergency
brake
on
Yes Engine oil
pressure
low
Generator
not
charging
Headlight
high beam
on
Fog
Lights
on
Both
rear
stop
lights
on
Back
up
light
on
Yes
Overheating
(Engine
Compt.)
Yes Low
water
level
Yes Oil level low
I
~7<-
fuel remaining
Low
air
pressure
If
light stays
on
continuously,
system
is
malfunctioning
DRIVER'S SEAT
Driver's
seat may be
adjusted
fore
and
aft by pushing in. lock
lever located at left front
of
seat.
When
seat is
positioned,
release
lever.
The
seat
back
may be tilted
by
pulling
the
back
tilt
knob
at the
left
rear
side
of
seat.
To
return
seat
back
to a
forward
position,
grasp
seat
back
and
pull
forward
while
pulling
tilt knob.
The
back
of
seat
cushion
can
be tilted
up
or·down
by
grasping
the
cushion
tilt lever
at
left
center
of
driver's
seat
and
tur-
ning
forward
to lower
and
back-
ward
to raise. Seat may be
raised
by
grasping
and
firmly
pulling
seat
frame
up.
To
lower, raise seat to
highest
position
then, lower seat to
lowest position.
from
there
raise
seat to
desired
height.
SEAT
BELT
BACK
\
-TILT
I\
CUSHION
TILT
FORE
AND
AFT
The
seat
is
supplied
complete
with a
retractable
seat
belt
as
required
by
•Optional
8

State and Federal Regulations. The seat belt may be fastened by slowly
pulling the buckle over and across the lap to engage the buckle on the
tongue. Sudden pulling of the belt will lock the reel. No special adjustment
is required as the reel device is self adjusting. If seat belt assembly
operation becomes defective, report to maintenance personnel.
DRIVER'S WINDOW
The driver's window has a small
sliding section at the lower rear of
window. The front section slides
rearward to open. The optional
drivers window is similar except
the unit is double glazed.
EMERGENCY ESCAPE ~
-~
#__.,
All side passenger windows can be opened from the inside for
emergency escape purposes. Window sash is hinged at the top and can be
opened by pulling out and up on the release bar, then pushing window sash
out. Instruction plates are mounted below the sash on release bars at each
seat location.
EMERGENCY EXIT HATCH
An emergency escape hatch is
located in the roof at the rear of
coach. The opening size is 18" x
25". To open, pull handle to unlock
and push hatch open. To close, pull
handle to open position and pull
until hatch is in the closed position.
Push handle to lock hatch.
ENTRANCE DOOR CONTROL
u
The entrance door is provided with an air-operated lock. The door is
opened or closed by means of a door control handle on the dash to the
driver's right. To open, turn handle clockwise; counterclockwise to close.
The air lock engages automatically when the door is closed, disengages
to open.
9

In
the
event
that
the
air
lock
mechanism
does
not
release
when
an
at-
tempt
is
made
to
operate
the
entrance
door
handle,
depress
the
overrule
switch
located
under
the
dash
near
the
center
of
the coach.
This
will
release
the
air
lock
regardless
of
the
position
of
the
door
control
handle.
IMPORTANT
If
air
lock
fails
to
engage
wh~n
entrance
door
is
closed,
immediately
advise
service
personnel
at next
service
stop.
Do
not
attempt
to
engage
while
coach
is
in
motion.
The
entrance
door
can be
opened
from
outside
the
coach
by means
of
a
release
knob
located
below
front
windshield.
After
pushing
release
knob,
pull
door
handle
and
open.
---,----,a,--,..-----:~~~-:--
.....
.--
...............
WINDSHIELD WIPERS & WASHERS
Two
air-operated
windshield
wipers
are
provided,
controlled
by two
small
knobs
situated
at the lower right
side)
of
the
instrument
panel.
Each
knob·
c~ntrols
its
corresponding
windshield
1
,
',,
,
wiper. ,
To
operate
wipers,
turn
control
,.
knob
for
wiper
desired
toward
direc-
tion
indicating
"ON"
until
required
speed
is
reached.
To
stop wipers,
turn
w
SHIELD
w
SHIELD
WASHER
WIPER
knob
to
"OFF"
position.
coNTROL
coNTRoLs
Air
operated
windshield
washers have an
independent
washer
control
knob
situated
on
the lower right
side
of
the
instrument
panel
alongside
the
two
windshield
wiper knobs.
To
operate
windshield
washers, press
control
knob.
The
washers
will
operate
for a
period
of
time while
the
control
knob
is
held
in this position.
Release
knob for
approximately
1/2
minute
to
allow
pump
to refill
before
operating
windshield
washer
again.
Turn
windshield
wipers
on
when
using
windshield
washers.
The
windshield
washer
reservoir
is
located
in the left
front
compartment
below
driver's
floor.
TACHOGRAPH (OPTIONAL)
Some
coaches
are
equipped
with
either
a
self
electrical
wound
"ARGO"
or
a manual
wound
"SANGAMO"
tachograph.
The
tachograph
is
an
option
in
addition
to the usual
speedometer
located
in
the
front
in-
strument
panel.
It
is
located
in
the
right
rear
baggage
compartment.
Some
coaches
are
equipped
with
an
optional
..
ARGO"
electronic
tachograph
which
is
located
on
the
dash
to
the
left
of
driver.
The
tachograph
head
illumination
is
controlled
by
the
instrument
and
dash
light
illumination
switch.
10

The Tachograph is a recording speedometer indicating driving speed,
mileage covered and the time of day.
The speeds driven, the driving and stopping periods and the mileage
covered are simultaneously recorded on a wax coated diagram chart that
is rotated by the instrument's clock movement.
Refer to Figure 1 (Argo Unit) FIGURE 1
SETTING CLOCK &
CHANGING CHART
NOTE: It is most important
that the tachograph never be
opened or closed while the
coach is in motion to avoid
damaging the chart and the in-
strument.
1. Open the instrument by
turning the key or knob type
lock at the top, coun-
terclockwise.
3
ARGO TACHOGRAPH WITH CHART.
NOTE: CHART MUST HAVE CENTER HOLE
AS
SHOWN. DO NOT SUBSTITUTE WITH
OTHER TYPE CHARTS.
2. Set the time by turning setting wheel No. 1. Fill in name, date, mileage
and starting time on chart.
3. To install chart lift clamping lever No. 3, place chart over center hub
and flip down clamping lever. Reverse procedure to remove chart.
NOTE: When installing chart, the hours on chart from 1-12 are AM
hours. The hours from 13-24 are PM hours. The clock should be set and
the chart hours will match the time of day at arrow No. 2. Example: 3
P.M. (time of day) should match on chart (15) at arrow No. 2.
4.
Insert only charts that are applicable to the Unit 0-80 MPH and refer to
center hole No. 4 for proper type (refer to Figure 1).
CAUTION: Always keep a chart in the tachograph.
Refer to Figure 2 (Sangamo Unit)
WINDING, SETTING
CLOCK &
CHANGING CHART
NOTE: It is most impor-
tant that the tachograph
never be opened or closed
while the coach is in motion to
avoid damaging the chart grid
and the instrument.
1. Open the instrument by
turning the key or knob coun-
terclockwise.
2. Wind the clock by pulling
and pushing the plastic
covered lever No. 1 located
to the left rear of the clock
door assembly.
FIGURE 2
SANGAMO TACHOGRAPH WITH
CHART. NOTE: CHART MUST HAVE
CENTER HOLE AS SHOWN. DO
NOT .SUBSTITUTE WITH OTHER
TYPE CHARTS.
11

Note: Be careful not to overwind the main spring.
3.
To set the correct time rotate the metal gear No. 2, located at the right
rear of the clock door assembly. Fill in the name, date, mileage & starting
time on
chart.
4. To install, place chart (face side up) on the chart drive. Close
tachograph door and turn key or knob clockwise.
5. When an individual
driver record is required the stylus No. 3 selection
lever for positions 1, 2 or 3 is used to indicate a change in drivers. The
stylus will record events in any of the three positions.
6.
Insert only charts that are applicable to the Unit 0-90 MPH and refer to
center hole No. 4 for the proper type (refer to Figure 2)
CAUTION: If the ualt Is to be idle and no charts used, a protecth·e
paper or chart should always be placed between the styli and recor-
dlna plate. This will protect tlle styli when the door is closed.
DESTINATION SIGN OPERATION
Open sight hole and move destination sign to desired designation.
Rotate handle counterclockwise to take up slack in mechanism. This will
lock
upper roller to prevent sign from moving while coach is in motion.
ENGINE OPERATION
Controls necessary to start and stop engine from the operator's com-
partment are mounted on the instrument panel in front of driver. These
controls are:
"MASTER" switch: must be in the "ON" position when starting engine.
When switch is pushed
"OFF" the engine will stop.
"STARTER" switch: is of the "momentary-on" type, and must be held
in the depressed position to engage the starter. When released, switch will
return to normal position.
"EMERGENCY STOP" switch: is of the "momentary-on" type used to
stop engine if it fails to
do so when the "MASTER" switch is moved to the
"OFF" position. The switch must be pushed up to operate the emergency
stop" mechanism.
"ENGINE OVERRULE" is obtained by holding the "STARTER"
switch in the depressed position (on coaches equipped with optional
automatic engine shutdown system). Switch should be held only long
enough to move coach to safety.
"GAUGES AND TELL-TALE LAMPS" Oil pressure and temperature
gauges, together with "LOW OIL" and "HOT ENG." tell-tale lamps, are
located in instrument panel in front of operator. A buzzer sounds when
"HOT ENG." or "LOW OIL" tell-tale flashes.
STARTING THE ENGINE
1. Make sure that the parking brake control button is pulled up, applying
air-operated parking brakes.
2. Make sure the remote
control switch in rear panel is set for front
operation. Transmission shift lever
should be in neutral position.
3. Place
"MASTER" switch in the "ON" position.
4. Press
"START" button to engage starter. Release button when the
engine starts. 12

NOTE: When the .. MASTER" swit<.:h is in the "ON" p(Jsition the .. LOW
OIL" tell-tale lamp will flash and buzzer will sound. The "LOW AIR"
tell-tale lamp will flash and buzzer will sound if air pressure is below 60-65 lbs.
and the low air tell-tale lamp will flash and buzzer will sound until the air
pressure of 100 lbs. is r-ea<.:hed. If the air system pressure is reduced below 100
lbs., the buzzer and tell-tale will not come on until the air pressure is redu<.:ed
below 60-65 lbs. Lamps will remain illuminated and buzzer will sound after
the engine has started until oil pressure is over 3 lbs. and air pressure is
increased above 65 lbs. and up to 100 lbs. Generator
1
amp and buzzer will
remain on until air pressure is over 65 lbs. and up to 100 lbs. The "Gen"
tell-tale and buzzer will not come on until air pressure is reduced below 60-65
lbs.
CAUTION:
Do not engage starter continuously for longer than 15 seconds at a
time for starting purposes of engine only. Allow starter motor to cool
before a second attempt. Continuous ·use of the starter without
allowing a cooling period may damage the starter motor.
5. Refer to "EMERGENCY CONDITIONS" for instructions regarding
starting engine at rear of coach.
COLD WEATHER STARTING
The coach is equipped with a
cold weather starting fluid cup,
located on top of the engine blower
housing. If temperature is below 35
degrees F., it may be necessary to
use
starting fluid capsules. Use one
7 c.c. capsule at temperatures
above zero, or two at lower tem-
peratures. DO NOT USE MORE
THAN TWO FLUID CAPSULES.
To use capsule, lift cover of starting
fluid cup, insert capsule, force
down over pointed tube in cup and
squeeze until all fluid enters cup.
Remove capsule and start engine.
FIRE WARNING
STARTING
FLUID CUP
Starting fluid used in the capsules is highly inflammable, poisonous
and is an anaesthetic: Do not smoke while using or handling capsules,
and keep away from flame or high temperatures. Avoid inhaling fumes
produced by starting fluid.
ENGINE IMMERSION HEATER (OPTIONAL)
Some coaches are also equipped with an electric engine immersion
heater to assist in cold weather operations. A receptacle is located to the
right of the rear engine service door for a 110 volt AC power source. The
engine heater s .. ould be used whenever the coach is parked for an ex-
tended period in cold weather and a suitable power source is available.
13

CAUTION
Only
110
volt
AC
power
should
be
used,
and
the
power
cable
must
be
grounded
(three-prong)
type.
Make
sure
power
cable
is
disconnected
before
moving
coach.
WARM-UP
After starting the engine,
operate
it at a fast idle speed by engaging
"FAST
IDLE"
switch
on
driver's
panel.
Air-operated
parking brakes must
be
on
before the
"FAST
IDLE"
control
will operate~ and should be
kept
applied
during
warm-up. Observe gauges and tell-tale lamps frequently
during
warm-up
and
subsequent operation.
If
abnormal
conditions
develop
stop engine immediately and
determine
cause.
STOPPING ENGINE
1.
Apply parking
brake
and
place transmission shift lever in neutral.
2.
Idle
engine for
about
30 seconds, then move the
"MASTER"
switch to
the
"OFF"
position.
ENGINE EMERGENCY
STOP
The
"EMERG.
STOP"
switch
on
the instrument panel
is
provided
for stopping the engine O'NLY
when
placing
the
"MASTER"
switch to the
"OFF"
position fails
to stop the engine. When the
"EM
ERG.
STOP" switch
is
moved
to the
"ON"
po.sition, it energizes a
solenoid which releases a cam on
the engine
air
choke valve per-
mitting it to close, shutting
off
the
air
supply to the engine.
IMPORTANT
ENGINE AIR
CHOKE
VALVE
'CAM
When
the
"EM
ERG
ENCY
STOP"
switch
has
been
used
lo
slop
the
engine,
the
choke
valve
must
be
reset
manually
before
the
engine
can
be
operated.
Rotate
cam
until
shoulder
engages
cam
lock.
The
emergency
stop
is
to
be
used
ONLY
when
pushing
the
"MASTER"
switch
fails
to
stop
the
engine.
Do
not
re-start
until
the
reason
for
loss
of
control
has
been
corrected.
AIR PRESSURE
The
brakes, air suspension system and
other
systems and controls
of
the
coach depend on adequate
air
pressure for their operation. Air pressure in
the coach
air
system
is
therefore extremely important.
After
the
engine
has -been
started
...
LOW
AIR"
tell-tale light will flash
and
buzzer
will
sound
until air
pressure
is built up
to
60-65 lbs.
and
up
to
100
lbs.
To
assure
safe
braking. DO
NOT
MOVE
COACH
UNTIL
Al R
PRESSURE
IS
AT
LEAST
100
LBS.
14

If
during the normal operation the
"LOW
AIR"
tel-tale light flashes
and
buzzer
sounds
it
will indicate that air pressure has
reduced
below 60-65 lbs.
and
that air
pressure is
too
low,
stop
the vehicle
at
once
and
determine
reason
for
pressure
loss.
ENGINE OIL PRESSURE
Engine
oil
pressure
gauge is
mounted
on
instrument
panel
in
front
of
operator.
Normal
readings
with engine
hot
are:
IDLING:
3-4 lbs.
minimum:
GOVERNED
SPEED:
30
lbs.
minimum.
Engine
must
not
be
operated
when oil
pressure
falls
below
30 lbs. at
governed
speed
under
full
load.
lf
oil
pressure
drops
below a sate level, the
"LOW
OIL"
tell-tale
light will flash,
buzzer
will sound and
automatic
shut-off system (if so
equipped)
will stop the
coach
engine.
Refer
to
"ALARM
SYSTEM."
ENGINE TEMPERATURE
A gauge
marked
"WATER
TEMP."
is
located
on
the
instrument
panel
to
indicate
engine
temperature.
The
most efficient
operating
temperature
range
is
170-185 degrees F.
If
possible,
do
not move the
coach
after star-
ting a
cold
engine
until
temperature
reaches
at least 140
degrees
F.
If
the
engine
overheats
the
"HOT
ENG."
tell-tale
light
on
the
instrument
panel
will flash
and
warning
buzzer
will sound.
If
the
coach
is
equipped
with
automatic
shut-down
system, the
controls
will
stop
the
coach
engine.
GENERATOR
A tell-tale lamp
marked
"NOT
GEN."
is
located
on
the
instrument
panel
to
indicate
when
generator
is
not
charging.
With"
MASTER"
switch
on
and
engine not running
or
with engine running
and
generator
not
charging, this
light will be illuminated. Ifthe light goes on during normal
operation,
proceed
as
outlined
later
in this manual
under
"EMERGENCY
CONDITIONS."
Note:
The
generator
will not
charge
with
air
pressure
below
65
lbs.
The
generator
will not
charge
until the
air
is
built
up
to
JOO
lbs.
When
air
pressure
drops
below
JOO
lbs. but
not
under
65
lbs., the
generator
will
continue
charging.
ENGINE ALARM SYSTEM
The
engine is
equipped
with an
alarm
system to signal low oil pressure,
low
air
pressure
and
high engine
temperature.
"LOW
OIL"
"LOW
AIR"
and
"HOT
ENG."
tell-tales
are
located
on
the
instrument
panel. A
buzzer
sounds
if
any
of
these
conditions
occur.
Some coaches have an
automatic
shut-off
system
inter-connected
with
the engine
alarm
system to
shut
off
the engine in case
of
oil
pressure
drop
or
abnormal
temperature
rise.
This
feature
is
provided
to
prevent
damage
to the
coach
engine
if
either
of
these
abnormal
conditions
arise.
The
action
of
the
automatic
shut-down
controls
can be
overruled
in
or-
der
to move
the
coach
to a safe
location
by use
of
the
"ST
ARTER-
OVERRULE
SWITCH"
on
the
driver's
instrument
panel.
If
engine
is
shut
off
automatically,
turn
"MASTER"
switch to
"OFF"
position
momentarily
and
switch
on
again.
Depress
"STARTER-OVERRULE
SWITCH"
to
start
coach
and
hold
after engine
is
started
in
order
to move coach to a
safe location.
Under
no
circumstances
should
the engine be
operated
longer
than
ab-
solutely necessary after the engine has been
stopped
by
automatic
shut-
down
controls.
15

USE OF TRANSMISSION
(STANDARD)
CAUTION: When parking vehicle, gearshift should always be left in
"NEUTRAL POSITION".
The transmission has four for-
ward and one reverse speeds. A
conventional shift lever located
to the right
of the operator's seat
is used to select forward tran-
smission gears.
The shift into
reverse gear is made by using the
shift lever and an electric
solenoid controlled by the
"REVERSE" switch on the
driver's switch panel.
Always start coach in
motion at the lowest possible
engine speed to prevent un-
necessary clutch wear.
REVERSE SHIFTING
SOLENOID
REVERSE
Close "Reverse" Switch For
Shift Into Reverse Gear
The "MASTER" switch must be in the "ON" position before
"REVERSE" switch will be operative.
To shift into reverse gear stop coach completely. Depress clutch pedal
and, while holding the "REVERSE" switch in the "ON" position, move
shift lever into the second gear position from neutral.
To shift out of reverse gear stop coach completely. With clutch pedal
depressed, move gear shift lever into the neutral position.
It is not necessary to use the solenoid switch when shifting out of
reverse.
CAUTION
Solenoid switch should be used only when gear shift lever is in
neutral
position, otherwise possible locking of gears may result.
UP SHIFTING
Always start the coach in motion first gear, then change progressively
into
second, third and fourth. Do not skip gears. Double-clutching is
recommended when making each gear change. Remain in each tran-
smission speed until the engine reaches full governed speed before shifting
into the next highest gear.
DOWN SHIFTING
Double-clutching in downshifting is recommended. Always change to a
lower gear to avoid engine
"lug". Lower gears should be used in driving
up or down grades, when operating in ice, snow or mud.
Lower gears should be used when going down
grade in order to make
use
of the engine as a brake in controlling vehicle speed. The same tran-
smission gear should be used to go down a grade
as would be used in clim-
16

bing it.
lfowever,
the engine
should
never
be
allowed
to
operate
at
a speed
higher
than
the
maximum
governed
speed.
Use
color
bands
on
speedometer
for
maximum
speeds
in each gear.
USE OF TRANSMISSION
AUTOMATIC
(OPTIONAL)
CAUTION:
When
parking
vehicle,
gearshift
should
always
be
left
in
"NEUTRAL
POSITION."
The
operation
and
driving
of
the
MC-8
coach
with an
automatic
tran-
smission
is
similar
to
that
of
a
normal
automobile
automatic
transmission.
In
order
to
attain
better
vehicle
per-
formance
proper
ranges
should
be
selected for speeds to
be
driven
depen-
ding
on
driving
conditions.
Each
for-
ward
range
starts
in 1st
gear
and
automatically
shifts
up
thru
the
gear
range selected.
RAKE
N-NEUTRAL
RANGE
is
used
when
starting
the
engine.
If
the
engine
starts
in any
other
position, the
neutral
start
switch
is
malfunctioning.
Use
this position
and
apply
the
parking
brake
when
vehicle
is
left
unattended
with
the
engine running.
CAUTION:
When
shifting
from
neutral
to a
drive
range, the
engine
should
be at
idle
speed.
D-FOURTH
RANGE
is
used for
normal
driving
conditions.
Upshifting
and
downshifting
is
automatic,
depending
on
speed
and
load.
3-THIRD
RANGE
is
used when traffic
conditions
do
not
permit
top
speed. Upshifting
and
downshifting
is
automatic.
2-SECOND
RANGE
is
used in
congested
traffic. Upshifting
and
down-
shifting is
automatic.
It
can also be used effectively
on
downgrades
to
take
advantage
of
engine
braking.
1-FIRST
RANGE
is used when
starting
the
vehicle
with an
extra
heavy
load,
pulling
through
mud
and
snow,
or
driving
up
steep grades.
It
may
also
be
used in
very
heavy
or
slow
moving
traffic.
R-REVERSE
RANGE
is used
for
backing
the
vehicle.
The
vehicle
should
be
completely
$topped
before
shifting from a
forward
range
to
reverse
or
vice versa.
Reverse
has
only
one
gear
position.
USING THE ENGINE TO SLOW THE VEHICLE
To
use
the
engine
as a
braking
force, shift to
the
next lower range.
However,
if
the
vehicle
is
exceeding
the
maximum
speed
of
that
lower
range,
use the service
brakes
to
reduce
speed
before
the
downshift
is
made.
CAUTION:·
PARKING
BRAKE:
There
is
no
"park."
position
in the tran-
17

smission
shift
pattern.
Therefore,
apply
the
parking
brake
to
hold
the
vehicle
when
it
is
unattended.
Be
sure
the
selector
lever
is
at
neutral
position.
CAUTION:
TOWING
COACH:
Before
towing
a
coach,
the
drive
line
must
be
disconnected.
This
applies
to
coaches
that
are
towed
on
the
road
to
a
repair
station.
Engines
cannot
be
started
by
towing
or
pushing.
Only
a
solid
type
link
can
be
used
between
towing
vehicle
and
coach.
A
safety
chain
should
also
be
attached
between
vehicles.
AUTOMATIC TRANSMISSION OIL LEVEL CHECK
Transmission
oil level
should
be
checked
at
regular
service
intervals
by
maintenance
personnel.
OIL SPECIFICATIONS
Only
Dexron®automatic
transmission
fluid is
recommended.
CAUTION:
INDICATIONS
OF
ABNORMAL
CONDITIONS:
Any
indication
of
possible
abnormal
conditions
should
immediately
be
brought
to
the
attention
of
maintenance
personnel.
The
transmission
should
not
be
operated
when
it
is
overheating
or
over
2500 F,
when
clutches
are
slipping,
or
when
noises
indicate
damage.
USE OF SERVICE BRAKES
The
coach
is
equipped
with
air-operated
brakes
which
are
applied
using
the foot pedal to the left
of
the
accelerator
pedal.
The
amount
of
foot
pressure
applied
to the
pedal
determines
the
extent
of
brake
application.
The
best
braking
action
is
obtained
by making the initial
application
gradually
to
obtain
the
degree
of
braking
required,
then
gradually
reducing
foot
pressure
as the speed
of
the coach
is
reduced,
so that only
slight
pressure
remains in the
brake
chambers
at the
end
of
the stop.
· Stop lights
on
the
rear
of
the
coach
are
automatically
applied
when the
brake
pedal
is
depressed.
A
tell-tale
light
on
the
dash
shows when
both
rear
lamps
are
functioning.
If
the
tell-tale
light
does
not go
on
wh'en the
brake
pedal
is
depressed,
check
for
faulty
rear
stop lights at once.
IMPORTANT
..
Fanning"
or
..
Pumping"
the
brake
pedal
is
not
recommended.
This
practice
does
not
increase
the
effectiveness
of
the
brake
system,
but
wastes
air
and
causes
unnecessary
wear
on
brake
parts.
Brake
chamber
and
line
pressure
is
not
increased,
instead
reservoir
and
line
pressure
is
reduced.
Before
the
brakes
can
develop
their
full
effectiveness,
coach
air
system
pressure
must
be
at
least
100
lbs.
Observe
the
air
pressure
indicated
on
the
air
pressure
gauge
at
frequent
intervals
dur::.
6
operation.
If
the
••LOW
Al
R"
tell-tale
light
flashes
and
buzzer
sounds,
stop
vehicle
immediately
and
determine
cause
before
proceeding.
18