Schwing 30100750, Руководство по эксплуатации

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Maintenance
All S P Rock Valve Model s
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Operation Manual -
105
Preventative Maintenance
NOTE!
There is a s a m p le m a inten a nce ch a rt shown
in the A pp en d ix of this m a n ua l, be g innin g
on pag e 130.
Daily Maintenance
• Check the levels and condition of the
lubricants and coolant in the towing truck.
Follow the manufacturers recommendations
for quantity and type.
• Bleed the moisture out of the truck air system
by opening the pet cocks located on the bottom
of the air tanks. This is especially important if
there is a chance that the moisture will freeze.
• Check the condition of the tires on both the
towing truck and the trailer. Do not drive the
unit with bald, cracked or damaged tires.
Check the wheel hubs on the trailer for
lubricant. Fill the hubs halfway with 90 wt.
gear lube, if fluid is below that point.
• Check the level and condition of the hydraulic
oil (Figure 46). Top up, if necessary, with the
same brand and type of oil. If you have a filter
buggy to pump oil into the tank, use it. Replace
milky looking oil, which is a sign of water
contamination. Try to determine the source of
the water, if possible. If the oil has turned
milky quickly, like from one day to the next,
then just replacing the oil will not solve your
problem, and the new oil may be milky looking
the next morning. If you need help with ideas
of where to look for the source of water
contamination, call the Schwing Service
Department at (651) 429-0999.
• Bleed the water out of the bottom of the
hydraulic oil reservoir, by opening the drain
cock or faucet located at the bottom of the
reservoir (Figure 47). Place a drain pan under
the outlet hose, open the valve, and watch the
liquid as it leaves the hose. When the liquid
changes from water to oil, close the valve.
Because of condensation, which is aggravated
by large heating and cooling cycles, it is
normal that there will be a small amount of
water in the tank every day, but it should settle
to the bottom of the tank overnight. The water
that is drained should be clear, and the oil that
follows it should also be clear, not milky.
• Check the differential cylinder rod packings.
Note! In order to conform to new European
regulations, beginning after 4th quarter of 1995
the waterbox will be fitted with a bolt down
grate under the waterbox covers. This will
make manually checking the rod packings each
day, like we have instructed you to do in the
past, impractical. To check for rod packing
wear, fill the waterbox with water above the
level of the differential cylinder rods (if no
grate is installed), or above the bolt down
grates (if installed). Let it sit for a few minutes.
If oil begins to float to the top of the water, it is
an indication that the rod packings are worn
(oil is lighter than water, and will float). Don’t
forget to let the water out after the check,
especially if freezing temperatures are
expected. Failure to replace the rod packings
when they need it will result in contaminates
from the waterbox, including water, entering
the hydraulic oil at the packings and wearing
on the rods, cylinder tubes, guide bushings,
pistons and the piston rings. The material that
gets worn off of the above mentioned items
also becomes contamination, accelerating the
wear. Left unchecked, this wear will totally
destroy a differential cylinder. Normally, you
will be due for new packings after 1 to 2 years.
Oil Level
Indicator
OilLEV.eps
Figure 46
The hydraulic oil level indicator.
2Koildrn.eps
Figure 47
The drain cock u s ed to drain water
from the re s ervoir.
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