OPERATION
Nobles Strive (09--04)
19
6. Lubricate the caster grease fittings with a water
resistant grease (Figure 37).
FIG. 37
7. Lubricate all pivot points with silicone spray then
coat with a water resistant grease to maintain
smooth operation.
8. Check the machine for water leaks and loose nuts
and bolts.
9. Periodically check the belt tension on the two
brush motors. Tighten the belt if you’re able to
twist it beyond 90
°
at midpoint (Figure 38).
FOR SAFETY: When servicing machine,
disconnect the battery connections.
FIG. 38
QUARTERLY MAINTENANCE
Every 250 hours check the drive transaxle motor,
vacuum motors and brush motors for carbon brush
wear. Replace carbon brushes when worn to a length
of 10 mm (3/8”) or less.
Contact an Authorized Service Center for
machine repairs.
FOR SAFETY: When servicing machine, all repairs
must be performed by a qualified service person.
WARNING: Electrical Hazard. Disconnect
Battery Cables Before Servicing Machine.
BATTERY MAINTENANCE
WARNING: Fire Or Explosion Hazard.
Batteries Emit Hydrogen Gas. Keep Sparks And
Open Flame Away. Keep Battery Compartment
Open When Charging.
FOR SAFETY: When servicing machine, wear
protective gloves and eye protection when
handling batteries and battery cables. Avoid
contact with battery acid.
1. Check the specific gravity using a hydrometer to
determine the charge level and the condition of the
batteries (Figure 39). If one or more of the battery
cells read lower than the other battery cells (0.050
or more), the cell is damaged, shorted, or is about
to fail. Check the hydrometer readings against the
following chart to determine the remaining battery
charge level.
NOTE:
Do not take readings immediately after adding
distilled water. If the water and acid are not thoroughly
mixed, the readings may not be accurate.
FIG. 39
SPECIFIC GRAVITY
at 27
°
C (80
°
F)
BATTERY
CHARGE
1.265
100% CHARGED
1.223
75% CHARGED
1.185
50% CHARGED
1.148
25% CHARGED
1.110
DISCHARGED
NOTE:
If the readings are taken when the battery
electrolyte is any temperature other than 27
_
C (80
_
F),
the reading must be temperature corrected. Add or
subtract to the specific gravity reading 0.004, 4 points,
for each 6
_
C (43
_
F)above or below 27
_
C (80
_
F).
2. Always follow proper charging instructions
(See CHARGING BATTERIES).