User Manual

SENR9977 57
TestingandAdjustingSection
Never disconnect any charging unit circuit or bat-
tery circuit cable from the battery when the charg-
ing unit is operated. A spark can cause an e xplo-
sion from the flammable vapor mixture of hydro-
gen and oxygen that is released from the elec-
trolyte through the battery outlets. Injury to per-
sonnel can be the result.
The battery circuit is an electrical load on the charging
unit. The load is variable because of the condition of
the charge in the battery.
NOTICE
The charging unit will be damaged if the connections
between the battery and the charging unit are broken
while the battery is being charged. Damage occurs
because the load from the battery is lost and because
there is an increase in charging voltage. High voltage
will damage the charging unit, the regulator, and other
electrical components.
The correct
procedures to test the battery can be
found in the manual that is supplied by the OEM.
i01955101
V-Belt - Test
Table 8
Belt Tension Chart
Gauge Reading
Size of Belt Width of Belt
Initial Belt Tension
(1)
Used Belt Tension
(2)
1/2 13.89 mm (0.547 Inch) 535 N (120 lb) 355 N (80 lb)
Measure the tension of the belt that is farthest from the engine.
(1)
Initial Belt Tens ion refers to a new belt.
(2)
Used Belt Te nsion refers to a belt that has been in operation for 30 m inutes or more at the rated s peed.
1. Check the belts for wear and check the belts for
damage. Belts must always be changed as a pair.
2. Fit a suitable Burroughs gauge at the center of
the longest free length of the belt and check
the tension on both belts. Check and adjust the
tension on the tightest belt. To adjust the belt
tension, see Disassembly and Assembly Manual,
“Alternator - Install”.
i02270879
Charging System - Test
The condition of charge in the battery at each
regular inspection will show if the charging system
is operating correctly. An adjustment is necessary
when the battery is constantly in a low condition of
charge or a large amount of water is needed. There
are no adjustments on maintenance free batteries.
A large amount of water would be more than one
ounce of water per cell per week or per every 100
service hours.