GMC 1976 ZEO 6083 User manual
X-7525
SECTION INDEX
General
Information,
Periodic
Maintenance
0
and
Lubrication
Body, Heating
and
1
Air
Conditioning
1975
AND
1976
Frame
MAINTENANCE
MANUAL
Front
Suspension
and
Final
Drive
3
MOTOR
HOME
Rear
Suspension
4
ZEO
6581
Brakes
5
Engine
6A
AND
Engine
6K
Cooling
System
TRANS
MODES
Engine
Fuel
System
6M
Emission
6T
ZEO
6083
Control
Systems
Engine
6Y
ZEO
6583
Electrical
Transmission
7
Fuel
Tank
8
and
Exhaust
Steering
System
9
0
MC
Wheels
and
Tires
10
Chassis
Electrical
12
TRUCK
&
COACH
DIVISION
Radiator
and
Coolant
13
GENERAL
MOTORS
CORPORATION
Recovery
System
RONTIAC,
MICHIGAN
48053
Bumpers
14
eneral
Motors
Corporation,
1975
Printed
in
U
.S .A
.
Miscellaneous
GMC
Living
Area
24
X-7525,
5M
Facilities
ALPHABETICAL
INDEX
WIRING
DIAGRAMS
SECTION
0
GENERAL
INFORMATION,
PERIODIC
MAINTENANCE,
AND
LUBRICATION
In
order
that
the vehicle
may
be
specifically
iden-
GENERAL
MOTORS
CORPORATION
WARRANTY
MAY
BE VOIDED
IF
WEIGHT
EXCEEDS
ANY
OF
RATINGS
SHOWN
.
GROSS
VEHICLE
WEIGHTINCLUDESWEIGHTOFBASE
VEHICLE,ALL
ADDEDEQUIPMENT,
DRIVER
AND
PASSENGERS,
AND
ALL
PROPERTY
LOADED
INTO
OR
ONTO
VEHICLE
.
RATINGS
IN
POUNDS
AS
MANUFACTURED
GROSS
VEHICLE
WEIGHT
FOR
THIS VEHICLE
MAXIMUM
FRONT
END
WEIGHT AT
GROUND
MAXIMUM
REAR
END
WEIGHT
ATGROUND
VEHICLE
IDENTIFICATION
NO
.
A-3688
Figure
1-Vehicle
Identification
Plate
VEHICLE
IDENTIFIC
ATION
GENERAL
INFORMATION
0- 1
Contents Of
This
Section
Are
Listed
Below
:
SUBJECT
PAGE
NO
.
Vehicle
Identification
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0-1
Component
Identification
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0-2
Hoisting
Instructions
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0-3
Jack
Usage
Instructions
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0-3
Towing
Vehicle
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.0-4
Engine,
Chassis,
and
Body
Maintenance
Schedule
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0-6
Explanation
of
Maintenance
Schedule
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0-7
Recommended
Fluids
and
Lubricants
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.0-11
Lubrication
Details
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0-12
Winterization
and
Vehicle Storage
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0-16
The
Vehicle
Identification
and
Weight
Rating
tified
as to
manufacturer,
engine
type,
year
of
manu-
Plate
(figure
1)
located
behind
the
right front access
facture,
etc
.,
refer
to
Figure
2
.
door
shows
the
"Vehicle
Identification
Number",
and
the
"As
Manufactured"Gross
Vehicle
Weight
Rating
for the vehicle to
which
it is
attached
.
(TYPICAL
IDENTIFICATION
NUMBER
TZE335V100053)
MODEL
DESIGNATION
Model
Code
Vehicle
Length
16
GMC
MotorHome
26'
33
TransMode
23'
36
TransMode
26'
MFD
.
B
Y
GMC
ENGINE
TYPE
E-VS
Gasoline
Figure
2-Vehicle
Identification
Number
r
0-
2
GENERAL
INFORMATION
COMPONENT
IDENTIFICATION
ENGINE
The
engines
are
identified
by
a
code
tape
installed
directly
above
the
engine
serial
number
which
is
stamped
on
the
engine
oil
fill
tube
(figure
3)
.
Figure
3-Engine
Identification
TRANSMISSION
The
transmission
model and
code
numbers
are
stamped
on
the
converter
housing
as
shown
in
Fig-
ure
4
.
FINAL
DRIVE
The
ratio
and
date
codes
-are
stamped
on
the
flange
near
the
right
hand
spreader
hole as
shown
in
Figure
5
.
Date
Code
:
The
code
letter
is
for
the
month
and
the
number(s)
are for actual
date
.
Ratio
Code
:
"T"
=
3
.07
:1
EXAMPLE
:
T
A12
=
3
.07
:1,
built
January
12
(J
=
9th
month,
I
is
not
used)
.
A
twin
post hoist
of
sufficient
capacity
and
with
proper
adapters
and/or
fittings
must
be
used
.
Front
hoisting position
is
the front
engine
cross-
member
.
HOISTING
INSTRUCTIONS
Figure
4-Transmission
Serial
Number
Plate
Figure
5-Final
Drive
Identification
Rear
hoisting
must
be
done
at
the rear
suspension
brackets
.
If
an
"I"
beam
type
adapter
is
used
it
should
be approximately 82
inches
in
length to gain
adequate
support
at
suspension
brackets
.
(figure
6)
If
vehicle
is
to
be
placed
on
jack
stands
for
maintenance
or
repairs,
the
hoisting
points
should
be
used
.
CAUTION
:
To
help
avoid
serious
damage
to
your
vehicle,
the
vehicle
should
be
raised
onlyon
twinpost
hoists
of
1
S,
000
pounds
or
more
total
rated
capacity,
at
the
suspension
points
noted
(see
diagram)
.
Before
raising,
check
overhead
clearance
to
see
that
it
is
sufficient
for the
vehicle
.
Do
NOT
use the
vehicle
jack
for
hoisting
or
maintenance
.
It
is
designed
for use
only
when
changing
tires
.
CAUTIONS
1
.
Follow
jacking
instructions
in
order
to
reduce
the
possibility
of
serious
personal
injury
.
2
.
The
jack
is
designed
for
use
only
when
chang-
ing
wheels
.
3
.
Never
get
beneath
the vehicle
when
using
jack
.
4
.
Do
not
start
or
run
engine
while
vehicle
is
on
jack
.
.
Figure
7-Jacking
at
Front
of
Vehicle
GENERAL
INFORMATION
0-
3
FRONT
ENGINE
REAR SUSPENSION
CROSSMEMBER
BRACKETS
DENOTES
APPROVED
LIFTING
POINTS
A-1941
Figure
6-Vehicle
Hoisting
Points
JACK
USAGE
INSTRUCTIONS
INSTRUCTIONS
Park on
level
surface
and
set
parking
brake
firmly
.
Set
transmission
in
"PARK"
.
Activate
Hazard
Warning
Flasher
.
Jack,
jack
chain,
handle,
"jacking
pad"
(wooden
block),
and
lug
wrench
are located
under
dinette
seat
.
Figure
8-Jacking
at
Rear
of
Vehicle
0-
4
GENERAL
INFORMATION
Block
both
front
and
rear
of
the
wheel
diagon-
ally
opposite
the
jack
position
.
Loosen
but
do
not
remove
wheel
nuts
.
JACKING
AT
FRONT-Place
hydraulic
jack
on
wood
block
near
energy absorbing
front
bumper
bracket
.
Place
hook
at
flange
of
front
cross-member
.
Pass
chain
under
bumper
and
adjust
chain
length
to
snug
fit
on
fork
on
top
of
jack
(See
figure
7)
.
JACKING
AT
REAR-Place
hydraulicjack
on
wood
block
close
to
rear
suspension
bracket
(See
figure
8)
.
The
hook
is
placed
in
the
drainage
slot
under
bracket
.
Adjust
chain
length so
link
will
fit
in
fork
at
top
of
jack
.
TOWING
AT
FRONT
TOWING
Proper
lifting
and
towing
equipment
is
necessary
to
prevent
damage
to the
vehicle
during
any
towing
operation
.
State (Provincial
in
Canada)
and
local
laws
applicable to
vehicles
to
tow
must
be
followed
.
No
towing
operation
should
be
attempted
which
would
jeopardize
the
safety
of
the
wrecker
operator,
any
bystanders
or
other
motorists
.
Passengers
should
never
ride in
a
towed
vehicle
for
any
reason
.
NOTE
:
Since
the
vehicle
could
exceed
the
lift
and
GVW
capacity of
most
sling
type
equip-
ment,
heavier
equipment
such
as
chains
and
spreader
bar
should
be
used
.
Also,
a
wrecker
with
at
least
8,000
lbs
.
capacity
shouldbeused
.
Vehicle
may
be
towed
on
all
six
wheels,
at
speeds
less
than 35
MPH,
for
distances
up
to
50
miles,
provided
the
final
drive,
axle,
transmission,
and
steering
system
are
otherwise
normally
operable
.
Use
only
towing
equipment
specifically
designed
for
this
purpose
following
the
instructions
of
the
towing
equipment
manufacturer
.
A
separate
safety
chain
system
must
be
used
.
For
suchtowing
the
steering
must
be
unlocked,
transmission
in
neutral
and
the
parking
brake
released
.
Attachments
must
be
to
en-
gine front
crossmember
.
Do
not
attach
to
bumpers
or
associated
brackets
.
Remember
that
power
brakes
and
power
steering
assists
will
not
be
available
when
engine
is
inoperative
.
When
towing
the
vehicle the
air
bellows
in
the
dle
.
TOWING
VEHICLE
Close
valve
at
base
of
jack
and
insert
jack han-
Always
operate
jack with
slow,
smooth
motion
.
Raise
vehicle so
tire
just
clears
surface,
replace
wheel
and
slightly
tighten
wheel
nuts
.
Open
valve
at
base
of
jack
to
lower,
then
fully
tighten
wheel
nuts
.
Proper
torque
is
250
foot
pounds
.
CAUTION
:
Use
lug
wrench
provided
to
tighten
wheel
nuts
securely
if
torque
wrench
is
not
available
.
(Follow
the
nut
tightening
sequence
shown
in
WHEELSAND
TIRES,
Section
10 of
this
manual
At
the
earliest
opportunity
have
wheel nut
torque
checked
.
This
is
necessary
to
help
prevent
loosening
or
stripping
of
the
wheel
nuts
.
rear
suspension
should be
inflated
to
maximum
capacity
and
then
place the
power
level
controls
in
"HOLD"
(vehicles
with
power
level
option)
.
On
vehicles
without
the
power
level
option,
disconnect
the
height control
valve
link
(figure
9)
on
each
side
of the vehicle
.
Raise
the
arm
on each
height
control
valve
to
inflate
the
air
bellows
to
provide
maximum
ground
clearance
for
the
vehicle
.
The
leveling
valve
can
then
be
released
to
the neutral
position
.
Tow
chains
should
be
attached
to
engine
front
crossmem-
her
(See
figure
10)
.
Note
that
a
six
inch
length
of
2"
x
4"
wood
block
must
be
placed
on
top
of
theengine
Figure
9-Disconnecting
Height
Control
Valve
Link
This manual suits for next models
5
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