By
Mark Penlerick
Engineering Team Leader
Blue Ox Towing Products
This
might sound like quite an odd title coming from the leading manufacturer
of tow bars and towing equipment in general, but facts are facts
and I'm here to give you a few pointers about tow bars, their use,
maintenance, setup and even their life span. Since experience is
something you don't usually get until just "after" you
need it, I hope you will gain some valuable experience from these
topics "before" you need it.
The
Middle Child
Have
you ever heard the adage that the middle child in a family feels
left out? Overworked? Under appreciated? Even just plain ignored?
You know, big brother gets everything he wants and little sister
gets by with everything. I'm sure some of you can relate. The RV,
tow bar and towed vehicle are like siblings, and the tow bar; well
it's the middle child in most families. Not just because it's between
the two vehicles (great memory aid) but also because it too often
is left out, ignored and overlooked when it comes to regular maintenance
and life span.
A tow
bar, any tow bar manufactured by any company is a piece of technology,
a piece of machinery, not unlike your motorhome or car, van, truck
or SUV that you're towing. Would you drive a 6-figure valued motorhome
10,000 20,000 how about 50,000 miles without checking or changing
the oil? Neither would I. Most motorhome owners are so strict with
their maintenance routine on their units that they hardly exceed
the window of oil changes by more than a few miles if at all. Maintaining
a tow bar is just as important and just as potentially costly if
ignored.
Know
when its "terminal"
Of
course as manufacturers we would love to sell each RVer out there
a new tow bar every six months, but consider this; the average RVer
buys or trades their towed vehicle every 2 to 3 years. The average
RVer buys or trades coaches every 5 to 6 years. The problem is the
average RVer still has the same tow bar they started with or at
least have owned their current bar longer than one or both of their
vehicles. The middle child
neglected again
sigh! The one
that does all the work, the one subjected to every bump, stop, start,
jerk and unusual occurrence. The one burdened with the responsibility
of pulling 3,000-10,000 Lb. "little sister" along everywhere
it goes is left to fend for itself and sooner or later will rebel.
Nothing
lasts forever. Consumers and dealers/technicians alike should be
keenly aware of the condition of older tow bars. I feel it's worth
a few hundred dollars every few years to insure that my $40,000
"little sister" is safe and secure.
Hook-up
Having
been to several rallies over the years I've seen some strange hook-ups
out there, and even some dangerous ones that I've spoken to the
owners about correcting. As a dealer you should take it upon yourself
to correct unsafe hook-ups when RVers stop by your dealership.
Tow bar angle is probably the easiest one to spot. It seems that
since all of us manufacturers have moved the industry into "coupler
less" towing i.e. motorhome mounted and stored tow bars
some
RVers do not feel the angle of the tow bar is important. Our recommendation
is no more than 4 inches higher at the motorhome side and absolutely
never lower at the motorhome side. If an extension is added for
say a bike rack it is even more imperative the tow bar not be at
a severe angle. It's all geometry and physics. The farther back
you move the pivot point of the tow bar from the rear axle of the
coach, the more vertical movement you get and the more leverage
is applied to the receiver hitch, tow bar and the baseplate.
Inspection
OK,
now lets cover some technical items. As with any mechanical device
manufactured today, parts wear out. Here are a few critical areas
to pay particular attention to while performing a pre-trip inspection
or for technicians, things you should be aware of when your customers
stop by.
Pins
are probably the easiest item to check. Visually inspect that the
pins attaching the tow bar to the baseplate are in good condition.
Pull them out, feel the surface to insure they are not wearing.
Check the operation of the retainer pins that hold the main pins
in place. Make sure those still have a good strong resistance when
you snap them in place to secure them. Don't forget to check the
5/8 pin that holds the tow bar to the motorhome receiver hitch too.
Replacement parts are cheap and I recommend replacing any of these
pins if worn. A good rule of thumb is; when in doubt, replace it.
I recommend using only genuine factory replacement parts if some
are in need of replacement. Buying bolts or pins from a hardware
store does not insure you are getting the proper hardness, metallurgical
properties and overall strength required.
Another
easy item to check are the bolts. Check to insure all bolts are
in place and tight. Move the tow bar through its complete range
of motion and verify that it operates smoothly without being too
loose or too tight.
Maintenance
Check
to insure the legs of collapsible tow bars latch properly and adjust
them according to the instructions provided with the unit from the
manufacturer. The two biggest contributors to premature wear on
tow bar parts are loose bolts, which allow excessive movement between
mating parts, and miss-adjusted leg latches, which allow too much
for/aft movement while towing.
Some
tow bars are equipped with a rubber boot which protects the inside
legs from dirt and water. If a tow bar is "sticky" or
the legs do not slide in and out easily follow these simple steps.
Remove the small cable ties holding the rubber boots on the legs
and slide the boots back. Wipe clean each inside leg and apply a
light coat of multipurpose grease to insure smooth operation. Secure
each boot back in place with an 8-inch nylon cable tie.
Tow
bars with exposed legs require a closer watch. Since they are not
protected, dirt and road grime can get into the latches and actually
cause them not to latch properly.
Conclusion
Now,
after saying all that I need to remind everyone that towing a vehicle
4-wheels down is the ultimate way to bring auxiliary transportation
with you. It's easy, fun and safe when good judgment is exercised.
I hope some of the things I've discussed here make us all think
a little about tow bars and the role they play in allowing RVers
the ability to "Pursue their Passions".
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