By
Michael Walker
Recently, my friend called me from a
roadside Dairy Queen in frenzy. His dad had been driving his Ford
car down the highway and heard and awful noise. First, there was a
squeal and then what sounded like a whip smacking the underneath of
his hood. They weren’t sure what was happening, but after
investigating, found that a black rubber belt was half-eaten off its
pulleys.
“Is
the belt still on there?” I asked.
“Well,
half of it is,” he continued as if the world were ending. “My dad
ripped the part that was hanging off and now only half
remains!”
“Have
you driven it? How many miles are on that thing?” I
questioned.
“Yeah.
We drove it into the parking lot here. I think it’s got ninety
thousand.” He said flabbergasted.
After
a couple more minutes of my friend’s ranting about his dad’s
mechanical shortcomings, I took a risk and told them to slowly drive
it over to my house (which was only five minutes away).
This
problem seems all too common with owners of modern cars. The
serpentine belt, both black and cracked, which had half-shredded
itself under my friend’s hood should have been replaced long before.
The problem could have been prevented. Before
this problem happens to you, you should be sure to check the belts
when you do a regular check-up on your car. If you’re a
do-it-yourself kind of person, then when you change the oil, be sure
that you check the serpentine belt with each and every oil change
(or if you use synthetic oil that doesn’t need changed as often,
check your belt every 3,000 to 5,000 miles).
The
serpentine belt is so called because it looks like a snake as it
curves around various drive pulleys. As stated, many modern
automobiles have this sort of belt because it’s a lot easier (and
less expensive) to install than older “V” belts; plus they last
about 50% longer. A
serpentine belt maintains its tension via a spring-loaded pulley.
The belt connects to and helps function your alternator, power
steering, air conditioning and water pump. You should never break
down on the side of the road due to this belt breaking from wear and
tear. The problem is easily preventable. Simply check the belt for
cracking, fraying or if it looks aged. However, even if the belt
looks excellent, it may be time to change it. The time interval will
depend upon the recommendation from the manufacturer (see your car's
manual), but it’s safe to say that it should be replaced every
60,000 miles, or every two to three years.
If
the problem persists and you find yourself having to change the
serpentine belt every few months, then it’s another issue. Most
likely, there is a problem with the alignment of one of the pulleys.
Many times, there could be a problem with what’s called the harmonic
balancer. While this sounds nice, this part is located on the front
of the crankshaft. It’s made up of an inner steel section, a rubber
sleeve, and a pulley with grooves that the belt fits over. If
there’s a problem with this, you’ll most definitely have to check to
see if it’s in alignment with a straightedge. If you notice it’s not
aligned with the other pulleys, then take the car to a professional.
They may have to move the entire engine over to work on
it.
If
you take your car to a mechanic for an oil change, ask about the
serpentine belt at that time. Be sure that s/he has inspected all
the belts thoroughly. If they recommend changing the belt, be sure
that they use a high-quality one. It’s recommended to use the best
made, and most likely, the most expensive (usually around 18 to 45
bucks). And, be sure to buy your belt from a respectable auto-parts
store as different stores carry different brands and types. Ask your
mechanic if they properly dispose of the belt. If it’s some person’s
home business, you may want to take the belt to a professional
mechanics shop and ask them if they can dispose of it properly. It’s
a good idea to keep Mother Nature in tune too! Finally, ask your
mechanic if s/he did a test of the belt while the car was in
operation.
However,
if you’re doing research on a serpentine belt, you’ve already won
half the battle. Why not try and change it yourself? If you got some
tools and a place to work, then you might feel quite “handy” once
you see that it’s not that hard of a job!
First,
you’ll want to buy a new high-quality belt. And, be sure to buy a
pulley ratchet made for your car. This will allow you to loosen the
tension pulley later. So, hopefully your belt hasn’t come off on its
own yet. If not, go ahead and draw a little schematic of how the
belt goes around each and every pulley. I like to draw it with as
much detail as possible. If the belt has already shredded off, then
I recommend searching the Internet for a schematic of how the new
belt should be placed. It can seem baffling at first. Be sure you
find a drawing for the exact date, year and model of your
car.
With
my friend’s car, we drew a schematic, but still became a bit
confused once we had snapped the belt off. So, we went to the
Internet for a back-up check. Next,
we took cutters and snapped off the remaining shredded belt. This
isn’t recommended. It’s better to locate the tension pulley (the
pulley that keeps the belt snug on all the other pulley’s and
pumps), take the pulley ratchet and push it counter clockwise. You
might have to use another tool (i.e. a hollow bar) for added
leverage, as sometimes the tension pulley is difficult to budge.
Remove the old belt. Next,
check the old belt and new belt together. Are they the same length?
Is there the same amount of grooves on each? If so,
continue.
Put
the new belt around the other pulleys according to your schematic.
Be sure that the grooves in the pulleys match-up to the grooves on
the belt. You don’t want it slipping off while driving!
Finally,
if the tension pulley is underneath the car, you may have a
difficult time holding the pulley loose and putting on the belt.
Perhaps there is a friend who could help you. During the
aforementioned replacement of my friend’s belt, I held the pulley
while he made sure the belt was in-line with the grooves and that it
looked good according to our schematic. Now, be sure all fingers are
moved out of the way and slowly allow the pulley to draw itself
tight again, thereby causing the serpentine belt to tighten around
as whole. Check
to make sure the belt is aligned on each and every pulley,
especially if there are grooves for the belt to fit into. If so,
start it up and see if it runs smoothly.
So,
instead of ending up on the side of the road in a parking lot at
Dairy Queen learning a lesson, check the serpentine belt on your car
often.
About the author - Michael Walker is a freelance
author providing tips and hints on engine related topics such as
engines from the JDM, used
car motors and swapping engines. His articles are a valuable source
of information for the auto enthusiast.