air filter CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual
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Page 15 of 659
LUBRICATION 0-13
LUBRICATION
INDEX
Page
Engine Crankcase Oil . 0-13
Crankcase Capacities. . 0-13
Lubrication . ,
•
o-13
SAE Viscosity Oils 0-13
Types of Oils 0-14
Maintaining Oil Level 0-14
Oil and Filter Change Intervals 0-14
Oil.
. . ...:.. 0-14
Filter o-14
Crankcase Dilution . 0-14
Automatic Control Devices to Minimize
Crankcase Dilution 0-14
Crankcase Breather Cap 0-14
Crankcase Ventilation System 0-15
Valve Type 0-15
Fuel Filter 0-15
Air Cleaner . 0-15
Polyurethane Type 0-15
Oil Wetted Paper Element Type 0-15
Battery Terminal Washers 0-15
Page
Distributor 0-15
Rear Axle and 3-Speed and Overdrive
4-Speed Transmission 0-15
Recommended Lubricants 0-15
Multi-Purpose Gear Lubricants 0-15
Lubricant Additions 0-15
Lubricant Changes 0-15
Powerglide Transmission 0-15
Turbo Hydra-Matic 0-16
Front Wheel Bearings 0-16
Manual Steering Gear . . . . 0-16
Power Steering 0-16
Air Conditioning 0-16
Brake Master Cylinder. 0-16
Parking Brake 0-16
Clutch Cross-Shaft , 0-16
Chassis Lubrication 0-16
Lubrication Diagrams . . 0-19
Body Lubrication (Chevrolet, Chevelle, Chevy n, Camaro). 0-20
Body Lubrication Points (Corvette) . 0-21
The selection of the proper lubricant and its correct
application at regular intervals does much to increase the
life and operation of all moving parts of the vehicle.
Consequently, it is important that the correct grade of
oil or grease, as noted in the following pages, be used.
ENGINE CRANKCASE OIL
Crankcase Capacity
4 Cylinder 4 qt.
6 Cylinder 4 qt.
8 Cylinder (283) 4 qt.
8 Cylinder (327) 4 qt.
8 Cylinder (350) 4 qt.
8 Cylinder (396) 4 qt.
8 Cylinder (427) Chevrolet 4 qt.
8 Cylinder (427) Corvette 5 qt.
For 4 Cyl. Add .5 qt. with filter change;
1 qt. for 6 and 8 Cyl. engines.
Lubrication
Crankcase oil should be selected to give the best per-
formance under the climatic and driving conditions in the
territory in which the vehicle is driven.
During warm or hot weather, an oil which will provide
adequate lubrication under high operating temperatures
is required.
During the colder months of the year* an oil which will
permit easy starting at the lowest atmospheric tempera-
ture likely to be encountered, should be used.
When the crankcase is drained and refilled, the crank-
case oil should be selected, not on the basis of the exist-
ing temperature at the time of the change, but on the
lowest temperature anticipated for the period during
which the oil is to be used.
Unless the crankcase oil is selected on the basis of
viscosity or fluidity of the anticipated temperature, dif-
ficulty in starting will be experienced at each sudden
drop in temperature.
SAE Viscosity Oils
SAE Viscosity Numbers indicate only the viscosity or
body of the oil, that is, whether an oil is a light or a
heavy body oil, and do not consider or include other
properties or quality factors.
The lower SAE Viscosity Numbers, such as SAE 5W
and SAE 10W which represent the light body oils, are
recommended for use during cold weather to provide
easy starting and instant lubrication. The higher SAE
Viscosity Numbers such as SAE 20 and SAE 20W, which
represents heavier body oils, are recommended for use
during warm or hot weather to provide improved oil
economy and adequate lubrication under high operating
temperatures.
Oils are available which are designed to combine the
easy starting characteristics of the lower SAE Viscosity
Number with the warm weather operating characteristics
of the higher SAE Viscosity Number. These are termed
"multi-viscosity oils," SAE 5-10W, SAE 5W-20, SAE
10W-20W, and SAE 10W-30.
The following chart will serve as a guide for the
selection of the correct SAE Viscosity Number for use
under different atmospheric temperature ranges, and
suggests the appropriate SAE Viscosity Numbers when
multi-viscosity oils are used.
Lowest Anticipated
Temperature
During Time
Oil Will Be
in Crankcase
32°F.
0°F.
Below 0°F.
Recommended
SAE Viscosity
Oils
SAE 20 or 20W
SAE 10W
SAE 5W
Recommended
SAE
Multi-
Viscosity
Oils
SAE 10W-30 .
SAE 10W-30
SAE 5W-20
SAE 30 or 10W-30 is recommended when most of the
driving is at high speeds and/or at temperatures above
90
°F.
CHEVROLET CHASSIS SERVICE MANUAL
Page 17 of 659
LUBRICATION 0-15
CRANKCASE VENTILATION VALVE
VALVE TYPE
NOTE: Under prolonged dusty driving condi-
tions,
it is recommended that these operations
be performed more often. Every 12,000 miles
or 12 months the valve should be replaced.
Connecting hoses, fittings, flame arrestor and
crankcase breather cap (where used) should be
cleaned. At every oil change the system should
be tested for proper function and serviced, if
necessary.
FUEL FILTER
Replace filter element located in carburetor inlet if
flooding occurs, if engine surges during constant speed
operation (pulsating effect) or if poor performance is
experienced during acceleration or at higher speeds.
AIR CLEANER
NOTE: Under prolonged dusty driving condi-
tions,
it is recommended that these operations
be performed more often.
POLYURETHANE TYPE-
Every 12,000 miles clean element in solvent, squeeze
out solvent, then soak in engine oil and squeeze out
excess.
OIL WETTED PAPER ELEMENT TYPE-
First 12,000 miles inspect or test element; if satis-
factory, re-use element but recheck every 6,000 miles
until replaced. Element must not be washed, oiled,
tapped or cleaned with an air hose.
BATTERY TERMINAL WASHERS
Battery terminals have felt washers between top of
case and cable connections to minimize corrosive action
of battery acid. These felt washers should be saturated
with engine oil every 6,000 miles.
DISTRIBUTOR
4 and 6-Cylinder Engine—Remove distributor cap and
rotate lubricator 1/2 turn at 12,000 mile intervals. Re-
place at 24,000 mile intervals.
8-Cylinder Engine—Change cam lubricator end for end
at 12,000 mile intervals. Replace at 24,000 mile
intervals.
REAR AXLE AND 3-SPEED AND
OVERDRIVE, 4-SPEED TRANSMISSIONS
The passenger car operates under the most severe
lubrication conditions at high speed and requires a hypoid
lubricant which will meet this condition.
Recommended Lubricants
Standard Rear Axles—SAE 90 "Multi-Purpose" gear
lubricant.
Positraction Rear Axles—Use special Positraction
lubricant.
CAUTION: Straight Mineral Oil gear lubricants
must not be used in hypoid rear axles.
Transmissions—SAE 90 "Multi-Purpose" gear
lubricant.
The SAE 90 viscosity grade is recommended for year
round use. However, when extremely low temperatures
are encountered for protracted periods during the winter
months, the SAE 80 viscosity grade may be used.
"Multi-Purpose" Gear Lubricants
Gear lubricants that will satisfactorily lubricate hypoid
rear axles have been developed and are commonly re-
ferred to as ' 'Multi-Purpose" gear lubricants meeting
U.S.
Army Ord. Spec. MIL-L-2105B.
These lubricants can also be satisfactorily used in
manual transmissions.
CAUTION: With Positraction rear axles use
special Positraction lubricant.
"Multi-Purpose" gear lubricants must be manufac-
tured under carefully controlled conditions and the
lubricant manufacturer must be responsible for the
satisfactory performance of his product. His reputation
is the best indication of quality.
Lubricant Additions
The lubricant level in the axle and transmission hous-
ings should be checked periodically. (Every 6,000 miles.)
It is recommended that any additions required to bring
up the lubricant level be made using the same type lubri-
cant already in the housing.
When checking lubricant level in transmission or rear
axle the unit being cheeked should be at operating
temperature. With unit at operating temperature the
lubricant should be level with bottom of the filler plug
hole.
If the lubricant level is checked with the unit cold
the lubricant level should be 1/2 inch below the filler
plug hole.
Lubricant Changes
The rear axle lubricant does not require changing for
the life of the vehicle. If additions are needed, or when
refilling the axle after service procedures, use lubricants
described above.
POWERGLIDE TRANSMISSION
NOTE: Every 12,000 miles, it is recommended
that the Powerglide low band be adjusted as
specified in Section 7 of this manual.
Every 6,000 miles--Check fluid level on dipstick with
engine idling, selector lever in neutral position, parking
brake set and transmission at operating temperature. If
fluid level is below full mark on dip stick, adding a small
amount of Automatic Transmission Fluid, General Motors
Automatic Transmission Fluid (Part Numbers 1050568-
69,
70) is recommended. If this fluid is not obtainable,
use Automatic Transmission Fluid Type 'A' bearing the
mark AQ-ATF followed by a number and the suffix letter
'A'.
Recheck fluid level on dip stick and again add a
small amount of fluid if needed to bring level to full
mark. DO NOT OVERFILL.
CHEVROLET CHASSIS SERVICE MANUAL
Page 18 of 659
LUBRICATION 0-16
Every 12,000 miles (more frequently*, depending on
severity of service, if vehicle is used to pull trailers,
carry full loads during high ambient temperatures,
operate in mountainous terrain or operate under other
severe conditions--Remove fluid from the transmission
sump and add one and a half quarts of fresh fluid for
Camaro and Chevy II and two quarts for Chevrolet,
Chevelle, and Corvette. Operate transmission through all
ranges and check fluid level as described above.
•Except if vehicle is equipped with transmission pro-
vided in heavy duty service options. If so equipped,
drain converter and pump every 12,000 miles and add
approximately seven and a half quarts of fresh fluid
for Chevy II and nine quarts for Chevrolet and Chevelle.
TURBO HYDRA-MATIC
Lubrication. recommendations for the Turbo Hydra-
Matic are the same as outlined for the Powerglide
transmission except for fluid capacity and filter change
listed below.
After checking transmission fluid level it is important
that the dip stick be pushed all the way into the fill tube.
Every 12,000 miles — after removing fluid from the
transmission sump, approximately 7 1/2 pints of fresh
fluid will be required to return level to proper mark on
the dip stick.
Every 24,000 miles, or at every other fluid change--
the transmission sump strainer should be replaced.
FRONT WHEEL BEARINGS
It is necessary to remove the wheel and hub assembly
to lubricate the bearings. The bearing assemblies should
be cleaned before repacking with lubricant. Do not pack
the hub between the inner and outer bearing assemblies
or the hub caps, as this excessive lubrication results in
the lubricant working out into the brake drums and
linings.
Front wheels of all passenger car models are equipped
with tapered roller bearings and should be packed with a
high melting point water resistant front wheel bearing
lubricant whenever wheel and hub are removed.
CAUTION: "Long fibre" or "viscous" type
lubricant should not be used. Do not mix wheel
bearing lubricants. Be sure to thoroughly clean
bearings and hubs of all old lubricant before
repacking.
The proper adjustment of front wheel bearings is one
of the important service operations- that has a definite
bearing on safety. A car with improperly adjusted front
wheel bearings lacks steering stability, has a tendency to
wander or shimmy and may have increased tire wear.
The adjustment of these bearings is very critical. The
procedure is covered in Section 3 of this manual under
Front Wheel Bearings—Adjust,
MANUAL STEERING GEAR
Check lubricant level every 36,000 miles. If required,
add EP Chassis Lubricant.
POWER STEERING
On models equipped with power steering gear, check
fluid at operating temperature in pump reservoir. Add
GM Power Steering Fluid, or, if this is not available, use
Automatic Transmission Fluid "Type A" bearing the
mark AQ-ATF followed by a number and the suffix letter
'A'
to bring level to full mark on dip stick.
AIR CONDITIONING
After the first 6,000 miles, check all hose clamp
connections for proper tightness.
Every 6,000 miles check sight glass under the hood,
after the system has been in operation for several
minutes. Sight glass should be clear but may, during
milder weather, show traces of bubbles. Foam or dirt
indicate a leak which should be repaired immediately.
BRAKE MASTER CYLINDER
Check level every 6,000 miles and maintain 1/4" below
lowest edge of each filler opening with GM Hydraulic
Brake Fluid Supreme No. 11.
PARKING BRAKE
Every 6,000 miles, apply water resistant lube to park-
ing brake cable, cable guides and at all operating links
and levers.
CLUTCH CROSS-SHAFT
Periodic lubrication of the clutch cross shaft is not
required. At 36,000 miles or sooner, if necessary;
remove plug, install lube fitting and apply CHASSIS
LUBRICANT.
CHASSIS LUBRICATION
For chassis lubrication, consult the lubrication chart.
It shows the points to be lubricated and how often the
lubricant should be applied.
The term "chassis lubricant" as used in this manual,
describes a water resistant EP chassis grease designed
for application by commercial pressure gun equipment.
CHEVROLET CHASSIS SERVICE MANUAL
Page 19 of 659
LUBRICATION 0-17
LUBRICATE EVERY 6,000 MILES
LUBRICATE EVERY 12,000 MILES
LUBRICATE EVERY 36,000 MILES
Refill Positraction Rear Axle with
Special Lubricant Only.
GL—Multi-purpose
or
Universal Gear Lubricant4
WB-Wheel Bearing Lubricant
(Whenever Brakes are serviced)
CL—Chassis Lubricant
EO-EngineOil
AT-Automatic Transmission Fluid {Type
A)
BF-Brake Fluid
Fig.
32—Lubrication Diagram—Chevrolet
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
4.
Air Cleaner
5. Crankcase Breather Cap
6. Front Wheel Bearings
7. Transmission
8. Rear Axle
9. Oil Filter
10.
Battery
11.
Parking Brake
12.
Brake Master Cylinder
CHEVROLET CHASSIS SERVICE MANUAL
Page 20 of 659
LUBRICATION 0-18
12
LUBRICATE EVERY 6000 MILES GL -Multi-purpose Gear Lubricant*
WB—Wheel Bearing Lubricant
LUBRICATE EVERY 12000 MILES (Whenever Brakes are serviced)
CL —Chassis Lubricant
LUBRICATE EVERY 36000 MILES E°-En9ine°il
"Refill Positraction Rear Axle with Special Positraction Rear Axle
Lubricant Only.
AT —Automatic Transmission Fluid (Type A)
SL —Steering Gear Lubricant
BF -Hydraulic Brake Fluid
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
Fig.
33—Lubrication Diagram—Chevelle
4.
Air Cleaner
5. Crankcase Breather Cap
6. Front Wheel Bearings
7. Transmission
8. Rear Axle
9. Oil Filter
10.
Battery
11.
Parking Brake
12.
Brake Master CylincU
CHEVROLET CHASSIS SERVICE MANUAL
Page 21 of 659
LUBRICATION
0-19
.
3-SPEED
4-SPEED
7 OVER DRIVE
10 9 5 1 6 2 '
AUTOMATIC
3 12 11
LUBRICATE EVERY 6,000 MILES GL-Gear Lubricant*
WB-Wheel Bearing Lubricant
(Wh Bk
AT-Automdtic Transmission Fluid
^ WB-Wheel Bearing Lubricant (Type A)
-TV
LUBRICATE
EVERY 12,000 MILES (Whenever Brakes are serviced)
' CL—Chassis Lubricant
• LUBRICATE EVERY 36,000 MILES EO_Engine Oil
BF
-Brake Fluid
•Refill Positt
Special Lubricant Only.
Axl«
with
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
Fig.
34—Lubrication Diagram—Chevy I!
4. Air Cleaner
5. Crankcase Breather. Cap
6. Front Wheel Bearings
7. Transmission
8. Rear Axle
9.
Oil Filter
10.
Battery
11.
Parking Brake
12.
Brake Master Cylinder
CHEVROLET CHASSIS SERVICE MANUAL
Page 22 of 659
LUBRICATION 0-20
3-SPEED
4—SPEED
AUTOMATIC
LUBRICATE EVERY 6000 MILES
LUBRICATE EVERY 12000 MILES
LUBRICATE EVERY 36000 MILES
*
Refill
positraction rear axle with
special lubricant only.
GL -GEAR LUBRICANT*
WB-WHEEL BEARING LUBRICANT
(WHENEVER BRAKES
ARE
SERVICED)
CL -CHASSIS LUBRICANT
CO-ENGINE
Oil;
AT -AUTOMATIC TRANSMISSION
FLUID (TYPE
A)
BF -BRAKE FLUID
Fig.
35—Lubricafion Diagram—Camaro
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
4.
Air Cleaner
5. Crankcase Breathe Cap
6. Front Wheel Bearings
7. Transmission
8. Rear Axle
9. Oil Filter
10.
Battery,
11.
Parking Brake
12.
Brake Master Cylinder
BODY LUBRICATION
See Body Service Manual
for
Body Lubrication,
cept Corvette)
(Ex-
CHEVROLET CHASSIS SERVICE MANUAL
Page 23 of 659
LUBRICATION
0-21
6
3-SPEED
4-SPEED
AUTOMATIC
10
LUBRICATE EVERY 6,000 MILES GL -Multi-purpose
or
Universal Gear Lubrincant*
-(V LUBRICATE EVERY 12,000 MILES WB-Wheel Bearing Lubricant
V/^ (Whenever Brakes
are
serviced)
AT —Automatic Transmission Fluid (Type)
BF -Brake Fluid
a
LUBRICATE EVERY 36,000 MILES
* Refill Positraction Rear Axle with
Special Lubricant Only.
CL -Chassis Lubricant
EO—Engine
Oil
Fig.
36—Lubrication Diagram—Corvette
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
4.
Air
Cleaner
5. Front Wheel
Bearings
6. Transmission
7. Rear Axle
8.
Oil
Filter
9. Battery
10.
Parking Brake
11.
Brake Master Cylinder
BODY LUBRICATION POINTS (CORVETTE)
Lubricate the following items when possible.
Hood Latch Mechanism and Hinges --Apply light engine oil
to pivot points. Don't oil lock pins or catch plates.
i
Rear Compartment Lid Release and Hinges --Apply light
engine
oil.
Side Door Hinge Pins—Apply light engine oil.
Door Lock Rotor and Striker Plate—Apply light engine oil or
stainless stick lubricant.
Lock Cylinders—Lubricate with powdered graphite.
Window Regulators and Controls and Door Lock Remote
Link —Apply light engine
oil.
Gas Tank Filler Cap Hinge—Apply light engine oil.
Weatherstrips and Rubber Bumpers —Coat lightly with
a
rubber lubricant.
CHEVROLET CHASSIS SERVICE MANUAL
Page 53 of 659
HEATER AND AIR CONDITIONING 1A-30
Leak Detector
Tool J-6084 (fig. 43) is a propane gas-burning torch
which is used to locate a leak in any part of the system.
Refrigerant gas drawn into the sampling tube attached to
the torch will cause the torch flame to change color in
proportion to the size of the leak. Propane gas fuel
cylinders used with the torch are readily available
commercially throughout the country.
CAUTION: Do not use lighted detector in any
place where combustible or explosive gases,
dusts or vapors may be present;
Operating Detector
1.
Open control valve only until a low hiss of gas is
heard, then light gas at opening in chimney.
2.
Adjust flame until desired volume is obtained. This
is most satisfactory when blue flame is approxi-
mately 3/8" above reactor plate. The reaction plate
will quickly heat to a cherry red.
3.
Explore for leaks by moving the end of the sampling
hose around possible leak points in the system. Do
not pinch or kink hose.
NOTE: Since R-12 is heavier than air, it is
good practice to place open end of sampling tube
immediately below point being tested, partic-
ularly in cases of small leaks.
CAUTION: Do not breathe the fumes that are
produced by the burning of R-12 gas in the de-
tector flame, since such fumes can be toxic in
large concentrations of R?»12.
4.
Watch for color changes. The color of the flame
which passes through the reaction plate will change
to yellow when sampling hose draws in very small
CHIMNEY
REACTION PLATE
BURNER HEAD
Fig.
43—Leak Detector
leaks of R-12. Large leaks will be indicated by a
change in color to a vivid purplish-blue. When the
sampling hose passes the leak, the flame will clear
to an almost colorless pale-blue again. If the flame
remains yellow when unit is removed from leak,
insufficient air is being drawn in or the reaction
plate is dirty.
NOTE: A refrigerant leak in the high pressure
side of the system may be more easily detected
when, if possible, the system is in operation. A
leak on the low pressure side may be most
easily detected after the engine has been shut
off for several minutes to allow system pres-
sures to equalize. This particularly applies to
the front seal.
VACUUM PUMP
A vacuum pump should be used for evacuating air and
moisture from the air conditioning system.
Vacuum pump, Tool J-5428, (fig.. 44) is available for
this purpose. It is used as a component part of the
Charging Station J-8393, described previously. The fol-
lowing precautions should be observed relative to tbe
operation and maintenance of this pump.
' • Make sure dust cap on discharge outlet of vacuum
pump is removed before operating.
• Keep all openings capped when not in use to avoid
moisture being drawn into the system.
• Oil should be changed after every 250 hours of nor-
mal operation.
To change oil, simply unscrew hex nut located on
back side of pump, tilt backward and drain out oil
(fig. 44). Recharge with 8 ounces of vacuum pump
oil.
If you desire to flush out the pump, use this
same type clean oil. Do not use solvent.
NOTE: Improper lubrication will shorten the
life of pump.
• If this pump is subjected to extreme or prolonged
cold, allow it to remain indoors until oil has reached
approximate room temperature. Failure to warm oil
will result in a blown fuse.
• A five ampere time delay cartridge fuse has been
installed in the common line to protect the windings
of the compressor. The fuse will blow if an ex-
cessive load is placed on the pump. In the event the
fuse is blown, replace with a five ampere time delay
fuse - do not use a substitute fuse as it will result in
damage to the starting windings.
• If the pump is being utilized to evacuate a burnt-out
system, a filter must be connected to the intake
fitting to prevent any sludge from contaminating the
working parts, which will result in malfunction of the
pump.
• Do not use the vacuum pump as an air compressor.
AVAILABILITY OF REFRIGERANT-12
Refrigerant-12 is available through Parts Stock in 25
lb.
drums and in 15 oz. disposable cans. Valves are
available for
the"
disposable cans, which may be used as
individual cans or as a group of up to four cans (fig. 45).
Tool J-6272 is used with one through four cans. The
use of the four-can fixture makes it possible to charge
the system with a known quantity of refrigerant without
CHEVROLET CHASSIS SERVICE MANUAL
Page 264 of 659
BRAKES
5-31
POWER BRAKES
INDEX
General Description 5-31
Maintenance
and"
Adjustments 5-31
Inspection . ... 5_31
Lubrication 5-31
Bleeding Instructions . . . 5.31
Air Cleaner Service . . . , 5.31
Page
Component Replacement 5-31
Power Brake Cylinder ......* 5-31
Removal . . 5-31
Disassembly and Assembly See Overhaul Manual
Installation . . . . 5-31
GENERAL DESCRIPTION
The Power Brake Unit is a self-contained hydraulic
and vacuum unit, utilizing manifold vacuum and atmos-
phere pressure for its power.
This unit permits the use of a low brake pedal as well
as less pedal effort than is required with the conventional
(nonpower) hydraulic brake system. Only two external
line connections are necessary -
one
a vacuum connection
from manifold to check valve located on front shell; the
other, a hydraulic connection from the main cylinder
outlet directly into the hydraulic system. The unit is
mounted on the engine side of the fire wall and directly
connected to the brake pedal.
MAINTENANCE AND ADJUSTMENTS
INSPECTIONS
1.
Check vacuum line and vacuum line connections as
well as vacuum check valve in front shell of power
unit for possible vacuum loss.
2.
Inspect all hydraulic lines and connections at the
wheel cylinders and main cylinder for possible
hydraulic leaks.
3.
Check brake assemblies for scored drums, grease
or brake fluid on linings, worn or glazed linings,
and make necessary adjustments.
4.
Check brake fluid level in the hydraulic reser-
voirs.
The reservoirs should be filled to the levels
shown in Figure 8.
5. Check for loose mounting bolts at main cylinder and
at power section.
6. Check air cleaner filter in power piston extension
and replace filter if necessary.
7. Check brake pedal for binding and misalignment
between pedal
-and
push rod.
LUBRICATION
The power brake unit is lubricated at assembly and
needs no further lubrication other than maintaining
normal reservoir fluid level. The reservoir should be
filled as described in this section.
BLEEDING INSTRUCTIONS
The power system may be bled manually or with a
pressure bleeder as outlined in this section. Use only
GM
Supreme 11 Brake Fluid or equivalent. Do not use the
power assist while bleeding. The engine should not be
running and the vacuum reserve should be reduced to
zero by applying the brake several times before starting
the bleeding procedure.
AIR CLEANER SERVICE
Servicing of the air cleaner is recommended and the
element replaced when restriction becomes severe
enough to affect power brake response. At any other
time, if cleaning of the filter is felt necessary, it should
be shaken free of dirt or washed in soap and water and
thoroughly dried.
COMPONENT REPLACEMENT
POWER BRAKE CYLINDER
Removal
1.
Remove vacuum hose from vacuum check valve.
2.
Disconnect hydraulic lines at main cylinder.
Disconnect push rod at brake pedal assembly.
Remove nuts and lock washers securing power unit
to fire wall, and remove power unit from engine
compartment.
3.
4.
NOTE:
Chevy
to fire wall.
has a three stud attachment
Repair procedures for the power cylinder are outlined
in the Brake Section of the Overhaul Manual-for service
of the main cylinder refer to applicable portion of
"Standard Brakes" in this manual.
Installation
1.
Mount the power brake assembly in place and install
the attaching nuts and lock washers.
2.
Attach vacuum line to check valve.
3.
Secure hydraulic lines to main cylinder.
4.
Attach push rod to brake pedal assembly, and check
operation of stop light.
5. Bleed brakes as outlined in this section.
CAUTION: After replacing the unit on the vehi-
cle,
start the engine and allow vacuum to build
up before applying the brake.
CHEVROLET CHASSIS SERVICE