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Automotive
Tools
Tool and Material Checklist:
- Assorted socket wrenches
- Feeler go
- Torque wrench
- Hydrometer
- Oil filter wrench
- Grease gun
- Bell peen hemmer
- Jack stands or wheel
- Rubber mallet ramps
- Assorted screwdrivers
- Wheel chocks
- Assorted pliers
- Fire extinguisher
- Tire gauge
If you've always been a little intimidated by the
prospect of doing your own automotive work, this
booklet is for you. A good deal of vehicle repair
and maintenance requires only basic knowledge
and a modest investment in tools and equipment.
The old saying that the right tools are a mechanic's best friend is equally valid for the
do-it-yourselfer. With an assortment of basic tools on
hand, jobs as diverse as an oil change, brake adjustment, and shock absorber replacement can all
be done right in your own driveway.
TOOL TIPS
Before turning your attention to specific tools,
familiarize yourself with the following points:
• Whenever buying tools, check first to see if
you will need standard or metric sizes.
• Purchase wrenches and sockets in sets to save
money; the set can always be added to later.
• Always choose good quality tools; they are
worth the added expense in terms of performance and length of service.
• When possible, purchase tool kits that contain
everything needed for a specific job.
• Store all tools neatly in a toolbox or on a pegboard; keeping your tools organized makes it
much easier to find them when needed.
• Don't forget to have convenience items such
as plastic drain pans, funnels, and droplights
on hand; they make working on a vehicle an
easier and more pleasant task.
• I-save a fire extinguisher designed for use on
gasoline and electrical fires handy at all times;
a 5-lb. (or larger), pressurized dry-powder
type is best.
• Always work in a well-ventilated area.
The group of tools presented here represents an
ideal "starter set." Once you're comfortable working with these tools, you're on your way to
becoming an accomplished backyard mechanic.
STANDARD WRENCHES
There are three types of standard wrenches commonly used in automotive
applications: open-end, box-end, and combination. Their job is to grip
and turn bolt heads and nuts of all sizes. Wrenches
are available separately or in sets.
Open-end wrenches are the simplest type. The
heads are angled at 15°; this permits complete rotation of a hex nut In a 300 swing just by flipping
the wrench. A good set of open-end wrenches has
nine in all, ranging from 1/4" through 1-1/8".
Box-end wrenches are good for loosening hard-to-turn fasteners because they completely encircle
nuts and bolt heads and possess superior holding
power. Some have a single head, with the other
end designed for striking with a hammer (within
limits). Those with offset handles provide better
clearance for knuckles. An ideal set of box-end
wrenches has six tools, with 12 separate openings
ranging from 3/8" through 1".
Combination wrenches are open at one end and
have a box head at the other. Because open-enders are faster and box heads more secure, this
type of wrench provides the best features of both.
ALLEN WRENCH
An Allen wrench is necessary when working with Allen head nuts, bolts, and set screws. Either end
of this wrench can be inserted into the fastener to
supply greater reach. Allen wrenches are available
in both standard and metric sizes.
SOCKET WRENCH
A socket wrench combines detachable heads, or
sockets, with a variety of handles. Socket openings
are square or 6-, 8-, or 12-point. The term point
refers to the number of corners on the inside of the
socket that grip a nut. Standard, flex, and deep
sockets are available, as well as special spark plug
sockets; the latter are deep cushioned inside to
avoid breaking the spark plug insulators.
Probably the most effective socket wrench handle is the ratchet. It allows much quicker operation
because the socket does not have to be removed
from the nut or bolt between strokes. The action of
the ratchet can be reversed by either turning the
wrench over or utilizing a lever. Extension bars are
available in various lengths to provide access to
hard-to-reach fasteners.
ADJUSTABLE WRENCH
The adjustable wrench has one fixed jaw and
one movable jaw. Available in lengths from 4 to 24
inches, it has the obvious advantage of fitting various size bolt heads and nuts.
TORQUE WRENCH
This type of wrench is used when nuts or bolts
must be tightened to an exact pressure. A typical
use for a torque wrench is torquing the cylinder
head on an engine. Torque actually means twisting
force and is measured in foot-pounds. Some
torque wrenches have a double-ended scale or dial
that can be read directly; others rely on a loud
clicking noise to signal when the desired torque
has been achieved.
OIL FILTER WRENCH
Several types of filter wrenches are on the
market. Before purchasing this tool, be sure it fits
the type of filter on your vehicle and can be maneuvered in the tight area around the filter.
HAMMERS
Although there is a seemingly endless variety of
hammers available, two in particular can satisfy
most of your automotive needs. The ball peen type
has a flat striking surface as well as a rounded end
for setting rivets. A rubber mallet is essential for
those instances where you don't want to mar the
metal, such as when replacing hubcaps.
SCREWDRIVERS
The most important screwdrivers with regard to
automotive work include: standard, Phillips, and
internal torx, Always choose a screwdriver that is
correctly ground and the right size to fit snugly in
the screw head. A tip that is rounded, chipped, or
too small can slip and damage either the screw
slot or the work itself. A tip that is too large will
project from either side of a countersunk screw
slot or the work itself. A tip that is too large will project from either side
of a countersunk screw
and damage the work as the screw is driven in.
PLIERS
Combination, or slip joint, pliers contain a built-in pivot point that provides for two jaw opening
widths. They also have a flat section on the jaws
with fine serrations and a curved section with
coarser serrations. Combination pliers are also
available with bent jaws or a narrow nose.
Needle-nose pliers are Ideal for doing delicate
work in confined spaces and for assembling delicate wiring. Water pump pliers can be adjusted like
combination pliers for a variety of jaw openings.
The long handles provide good leverage. Diagonal
cutters are for cutting wire close to a surface; they
should never be used to grip.
Toggle-locking pliers, or vise grips, are useful
for those jobs where a third hand is required. The
jaws are controlled by turning the adjuster on the
end of the tool; when the handles are closed, a
considerable amount of force is applied. By
mounting these pliers securely to the edge of a
workbench with a table clamp, you can improvise
a makeshift vise. Toggle-locking pliers come with
different Jaws-including curved serrated, curved
smooth, flat, and C-clamp-depending on the job
required.
GAUGES
Gauges are important for those instances when
precision measuring is required. For example,
more tires are ruined by simple neglect than anything else. Therefore, be sure to use a tire gauge to
check your tires regularly for correct inflation
pressure. Another good example is the feeler
gauge, an essential tool for measuring spark gaps.
A hydrometer is used to determine if the freezing
point of your car's coolant is adequate. This gauge
is used as follows:
1. Operate the engine with the radiator cap
loose until the engine reaches normal operating
temperature; then remove the cap.
2. Measure the coolant temperature by drawing
a sample into the hydrometer, then return the
sample to the radiator. Repeat this step several
times until the thermometer reading is stable.
3. Holding the hydrometer in a straight, vertical
position, squeeze the bulb and pull enough coolant into the glass tubes to raise the hydrometer
float. Make sure that the float does not touch the
sides of the large tube.
4. Note the top letter touched by the coolant on
the float scale; then return this sample to the
radiator.
5. Refer to the freezing temperature chart above
the thermometer. Find the letter noted in the previous step, along with the thermometer reading
taken in step 2. The number found at this location
is the degree of freezing protection provided.
6. After adding coolant, let the engine run for 5
minutes to allow the coolant to mix before rechecking the freezing point.
LUBRICATION TOOLS
Proper lubrication is vital to your automobile. An
oil can with a pistol grip is convenient for general
lubing. For chassis greasing, a grease gun that
takes a cartridge is best. Be sure to wipe off the
grease nipple with a clean rag before attaching the
gun; this prevents dirt from being injected, which
could clog the nipple. If the trigger is particularly
difficult to squeeze. or if grease squirts out between the nozzle and nipple, the nipple is clogged.
PULLERS
Pullers are designed to lift pre-fitted parts such
as battery cable terminals. They are also ideal for
separating parts that are stuck together. Pullers
are available in various sizes.
LIFTING TOOLS
Either jack stands or wheel ramps are a must
whenever a car is raised off its wheels. Jack stands
are used with scissor jacks or hydraulic jacks;
simply use the jack to raise one wheel at a time
high enough to get the stand underneath and in
place. The capacity is usually stamped on the jack
stand.
Wheel ramps are used as follows:
1. If someone else is available, station him in a
safe position to help guide you onto the ramps.
2. Position the ramps directly in front of the
car's front wheels. If the ramps are not in perfect
alignment with the wheels, the car can fall off as it
is being driven onto them.
3. With the car in first gear, slowly drive it onto
the ramps.
4. Secure the car by putting it in PARK, setting
the parking brake, and blocking the rear wheels. If
the car has a standard transmission, turn off the
ignition and put the transmission in gear.
Whether you are using jack stands or wheel
ramps, don't forget to keep some heavy wooden
block or bricks on hand to use as wheel chocks.
For safety purposes, wheels should be blocked
whenever a car is jacked up or put on ramps.
Simply setting the parking brake is not always sufficient. When jacking the rear wheels, place the
chocks in front of the front wheels. When jacking
the front wheels, place the chocks in back of the
rear wheels.
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