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
ENGINE-EIECTRICAI 6Y-3
PERIODIC SERVICING
Since the Battery is a perishable item which requires
periodic servicing, a good maintenance program will
insure the longest possible Battery life.
COMMON CAUSES OF FAILURE
If the Battery tests good but fails to perform satis-
factorily in service for no apparent reason, the following
are some of the more important factors that may point to
the cause of the trouble.
1.
Vehicle accessories inadvertently left on overnight to
cause a discharged condition.
2.
Slow speed driving of short duration, to cause an
3.
undercharged condition.
A vehicle
capacity.
electrical load exceeding the generator
4.
Defect in the charging system such as high resist-
ance, slipping fan belt, faulty generator or voltage
regulator.
5. Battery abuse, including failure to keep the Battery
top clean, cable clamps and posts clean and tight,
and improper addition of water to the cells.
LEVEL INDICATOR
The Battery features an electrolyte level indicator,
which is a specially designed vent plug with a transparent
rod extending through the center (fig. 5b). When the elec-
trolyte is at the proper level, the lower tip of the rod is
immersed, and the exposed top of the rod will appear
very dark; when the level falls below the tip of the rod,
the top will glow. ,
The Indicator reveals at a glance if water is needed,
without the necessity of removing the vent plugs (fig. 6b).
The Level Indicator is used in only one cell (second
cell cap from positive Battery post) because when the
electrolyte level is low in one cell, it is normally low in
all cells. Thus when the Indicator shows water is needed,
check the level in all six cells.
An alternate method of checking the electrolyte level is
to remove the vent plug and visually observe the electro-
lyte level in the vent well. The bottom of the vent well
features a split vent which will cause the surface of the
electrolyte to appear distorted when it makes contact.
The electrolyte level is. correct when the distortion first
appears at the bottom of the split vent (fig. 4b).
ELECTROLYTE LEVEL
The electrolyte level in the Battery should be checked
regularly. In hot weather, particularly during trip driv-
ing, checking should be more frequent because of more
rapid loss of water. If the electrolyte level is found to be
low, then colorless, odorless, drinking water should be
added to each cell until the liquid level rises to the split
vent located in the bottom of the vent well. DO NOT
OVERFILL because this will cause loss of electrolyte
resulting in poor performance, short life, and excessive
corrosion.
CAUTION: During service only water should be
added to the Battery, not electrolyte.
The liquid level in the cells should never be allowed to
drop below the top of the plates, as the portion of the
INDICATOR
ELECTROLYTE LEVEL
CORRECT
Fig.
5b—Cut-Away View Showing Electrolyte at Proper Level
with Indicator Having Dark Appearance
plates exposed to air may be permanently damaged with a
resulting loss in performance.
WATER USAGE
Excessive usage of water indicates the Battery is being
overcharged. The most common causes of overcharge
are high Battery operating temperatures, too high a volt-
age regulator setting, poor regulator ground wire con-
nection. Normal Battery water usage is approximately
one to two ounces per month per battery.
INDICATOR
Fig.
6b—Cut-Away View Showing Electrolyte at Low Level
with Indicator Having Light Appearance
CHASSIS SBtVKZ MANUAL
ENGINE-ELECTRICAL
6Y-4
CLEANING
The external condition of the Battery should be checked
periodically for damage or for the presence of dirt and
corrosion. The top of the Battery should be kept clean.
An accumulation of acid film and dirt may permit current
to flow between the terminals, which will slowly dis-
charge the Battery. For best results when cleaning the
top of Batteries, wash first with a diluted ammonia or a
soda solution to neutralize any acid present; then flush
with clean water. Care must be taken to keep vent plugs
tight, so that the neutralizing solution does not enter the
cells.
CABLES
To insure good electrical contact, the cables should be
clean and tight on the Energizer posts. If the posts or
cable terminals are corroded, the cables should be dis-
connected and the terminals and clamps cleaned sepa-
rately with a soda solution and a wire brush. After
cleaning and installing clamps, apply a thin coating of
petroleum jelly on the cable clamps to retard corrosion.
CARRIER
AND
HOLD-DOWN
The Battery carrier and hold-down should be clean and
free from corrosion before installing the Battery. The
carrier should be in a sound mechanical condition so that
it will support the Battery securely and keep it level.
To prevent the Battery from shaking in its carrier,
the hold-down bolts should be tight (60-80 in. lbs.). How-
ever, the bolts should not be tightened to the point where
the Battery case or cover will be placed under a severe
strain.
BATTERY SAFETY PRECAUTIONS
When Batteries are being charged, an explosive gas
mixture forms in each cell. Part of this gas escapes
through the holes in the vent plugs and may form an
explosive atmosphere around the Battery itself if ventila-
tion is poor. This explosive gas may remain in or around
the Battery for several hours after it has been charged.
Sparks or flames can ignite this gas causing an internal
explosion which may shatter the Battery.
The following precautions should be observed to pre-
vent an explosion:
1.
Do not smoke near Batteries being charged or which
have been very recently charged.
2.
Do not break live circuits at the terminals- of Batr
teries because a spark usually occurs at the point
where a live circuit is broken. Care must always be
taken when connecting or disconnecting booster leads
or cable clamps on fast chargers. Poor connections
are a common cause of electrical arcs which cause
BATTERY CHARGING PROCEDURES
There are three methods of recharging Batteries.
They differ basically in the length of time the Battery is
charged and the rate at which charging current is sup-
plied. One is the Slow Charge method, the second is the
Fast Charge method, and the third is the Emergency
Boost Charge method.
Before recharging a Battery by any method, the elec-
trolyte level must be checked and adjusted if necessary.
SLOW CHARGING
The Slow Charge method supplies the Battery with a
relatively low current flow for a relatively long period of
time. This is the only method that will bring the Battery
to a full state of charge.
The Slow Charge method consists of charging at
approximately a 4 ampere rate for 24 hours or more if
necessary to bring the Battery to full charge. A fully
charged condition is reached when the cells are gassing
freely and three corrected specific gravity readings
taken at hourly intervals show no increase.
FAST CHARGING
The Fast Charge method supplies current to the Bat-
tery at a 40 to 50 ampere rate for a 1 1/2 hour period of
time. If the electrolyte temperature reaches 125°F before
the 1 1/2 hour period is completed, the Battery must be
taken off charge temporarily, or the charging rate
reduced to avoid damage to the Battery.
Although a Battery cannot be brought to a fully charged
condition during Fast Charge, it can be substantially
recharged or "boosted". In order to bring the Battery to
a fully charged condition, the charging cycle must be
finished by the Slow Charge method.
EMERGENCY BOOST CHARGING
In cases where the Battery is not sufficiently charged
to crank the engine, an emergency boost charge may be
applied as a temporary expedient in order to crank the
engine. The Emergency Boost Charge method consists of
charging at a 40 to 50 ampere rate for a period of one-
half hour.
It should be particularly noted that the Emergency
Boost Charge will not necessarily restore the Battery to
a useful state of. charge for continued service. After an
emergency boost charge, failure to charge the Battery
further, either by a long uninterrupted driving period or
by the Fast Charge or Slow Charge method, may result
in failure to crank the engine the next time cranking is
attempted. A Battery should never be condemned on the
basis of failure to crank the engine after an emergency
boost charge. Although an emergency boost charge may
put enough energy into the Battery to crank the engine
once, further charging usually is necessary in order to
create a sufficient reserve to crank a second and third
time.
12
VOLT BATTERY SUGGESTED
CHARGING RATES
(100 Amp/hr or Less Capacity)
TYPE OF
CHARGE
Boost Charge for
Light Load Test
Slow Charge
Fast Charge
Quick Boost .
Dry Charge
Warm-up Boost
LENGTH
OF TIME
20 Minutes
24 Hours
1-1/2 Hours
30 Minutes
10 Minutes
CHARGING
RATE
50 Amps
4 Amps
40-50 Amps
40-50 Amps
15 Amps
CHEVROLET CHASSIS SERVICE MANUAL
ENGINE-ELECTRICAL 6Y-9
63 AMP 1
MODELS ONLY'
BATTERY FUSIBLE
LINK
HORN
FUSIBLE LINK'
TRANSISTOR
FUSIBLE LINK'
Fig.
4c— Circuitry - Voltage Regulator Assemblies (Corvette)
Engine compartment wiring harness incorporates sev-
eral fusible links. Each link is identified with its gage
size. A fusible link is a length of special wire (normally
four wire gages smaller than the circuit it is protecting)
used in wiring circuits that are not normally fused, such
as the ignition circuit. The same size wire with a hypalon
insulation must be used when replacing a fusible link.
The links are:
1.
The pigtail lead at the battery positive cable (except
Corvette) is a 14 gage, brown fusible link protecting
the 10 gage battery charging circuit. This wire is an
integral part of the battery cable assembly and serv-
icing requires replacing the complete battery cable
assembly. On Corvette models this link is installed
as a molded splice at the solenoid "Bat" terminal
and servicing requires splicing in a new link.
2.
A 16 gage black fusible link is located at the horn
4.
relay to protect all unfused wiring of 12 gage or
larger. It is installed as a molded splice and serv-
icing requires splicing in a new link.
The generator warning light and field circuitry (16
gage wire) is protected by a fusible link (20 gage
orange wire) used in the "battery feed to voltage
regulator #3 terminal" wire. The link is installed as
a molded splice in the generator and forward lamp
harness and is serviced by splicing in a new 20 gage
wire as required.
The ammeter circuit on all models is protected by
two orange, 20 gage wire fusible links installed as
molded splices in the circuit at the junction block or
the solenoid "Bat" terminal (Corvette only) and at
the horn relay. Each link is serviced by splicing in a
new 20 gage wire as required.
MAINTENANCE AND ADJUSTMENTS
At regular intervals, inspect the terminals for cor-
rosion an4 loose connections, and the wiring for frayed
insulation. Check mounting bolts for tightness. Check the
drive belt for alignment, proper tension and wear. Be-
cause of the higher inertia and load capacity of the rotor
used in A.C. generators, PROPER BELT TENSION is
more critical than on D.C. generators.
Since the Delcotron and its companion regulator are
designed for use on negative polarity systems only, the
following precautions must be observed. Failure to ob-
serve these precautions may result in serious damage to
the charging system.
1.
When installing a battery, always make absolutely
sure the ground polarity of the battery, generator and
regulator is the same.
2.
When connecting a booster battery, make certain to
connect the correct battery terminals together.
3.
When connecting a charger to the battery, connect the
correct charger leads to the battery
%
terminals.
4.
Never operate the generator on an uncontrolled open
TO SOLENOID
BAT ACC RES. WIRE
Fig.
5c—Typical Wiring Diagram Showing Lead Connections
CHEVROLET CHASSIS SERVICE MANUAL