National Mower HYDRO HYD70OM-8/99 - Manual (Page 17)

NATIONAL HYDRO 70" TRIPLEX ®
17
8—MAINTENANCE
To avoid possible serious bodily injury,
before performing any adjustments,
maintenance, or lubrication, place all
controls in “Neutral”, lower the mowers to
the ground, engage parking brake, turn
ignition switch off and remove key.
8.1—GENERAL MAINTENANCE
The long trouble-free life of your machine
depends on the maintenance it receives. Set up a
maintenance program for your Hydro 70 to cover the
following points:
1. Keep tractor and mowers clean.
2. Keep all moving parts properly lubricated.
3. Keep all parts properly adjusted.
4. Inspect for loose, worn or damaged parts
(Fittings and hoses).
5. Keep shields in place at all times.
6. Keep tires properly inflated.
If your inspection reveals worn or damaged
parts, replace these parts before operating machine or
before actual breakdown occurs.
To avoid injury from hot, high pressure
oil, never disconnect hydraulic hoses
with attachments in up position. Never
run hands across tubes, hoses or fittings
to check for leaks. Hydraulic fluid
escaping under pressure can have
sufficient force to penetrate skin.
8.2—ASSEMBLY & DISASSEMBLY
Use the illustrations in the Parts Section as reference
for the disassembly and assembly of components.
Always maintain relative position of parts when
disassembling. Clean and lubricate individual parts and
components as required.
8.3—BATTERY
1. Make certain the ignition switch is in the “Off”
position and the keys have been removed.
2. Refer to Section 3.4 in this manual for battery
specifications.
Always wear protective glasses or
goggles and protective clothing when
working with batteries. You must follow
the battery manufacturer’s instructions on
safety, maintenance and installation
procedures.
3. When the battery is being installed or removed,
make sure that the positive and negative terminals
do not come in contact with metal tractor parts at the
same time or severe damage will result.
Always connect the “ground” (black) cable last
and remove it first whenever performing any
maintenance.
4. Battery connections must be kept clean and tight at
all times. Loose cables will cause eventual battery
failure. Keep terminal covers in place.
5. Use soap and water to clean the battery as required.
Care must be taken to prevent soap and water from
getting inside the battery.
6. Brighten the terminal contact surfaces with steel
wool.
7. Apply a light coat of petroleum jelly or chassis
lubricant to terminals and cable ends to prevent
corrosion.
8. Tighten cables securely to battery terminals.
Batteries contain sulfuric acid and
generate explosive mixtures of hydrogen
and oxygen gases. Keep any device
which may cause sparks or flames away
from the battery to prevent explosion.