Detroit Diesel 60 Series Operator's Manual page 41

Maintain the electrolyte level accord-
ing to the battery manufacturer's recom-
mendations, but do not overfill.
Overfilling can cause poor performance
or early failure.
Keep the terminal side of the battery
clean. When necessary, wash with a
solution of baking soda and water.
Rinse with fresh water. Do not allow the
soda solution to enter the cells.
Inspect the cables, clamps, and hold-
down brackets regularly. Clean and
reapply a light coating of petroleum jelly
when needed. Have corroded or dam-
aged parts replaced.
If the engine is to be out of service for
more than 30 days, remove the batter-
ies and store in a cool, dry place. Keep
batteries fully charged, if possible.
Replace any battery that fails to hold a
charge.
Periodically check battery connec-
tions for corrosion and tightness. If nec-
essary, remove connections and wire
brush any corrosion from terminals and
cable ends. Replace damaged wiring.
Item 7 — Tachometer Drive
A typical tachometer drive take-off loca-
tion is the camshaft drive gear access
cover on the front of the gear case
cover. Lubricate the tachometer drive (if
so equipped) every 150 hours or 15,000
miles (24,000 km) with an all purpose
grease. At temperatures above -1°C;
(+30°F), use a No. 2 grade grease. Use
a No. 1 grade grease below this tem-
perature.
Item 8 — Drive Belts
Belts should be neither too tight nor too
loose. Belts that are too tight impose
excess loads on the crankshaft, fan
and/or alternator bearings, shortening
both belt and bearing life. Excessively
overtightened belts can result in
crankshaft breakage. A loose belt will
slip and may cause damage to acces-
sory components.
CAUTION:
To avoid injury from rotating belts
and fans, do not remove and dis-
card safety guards.
Use a Belt Tension Gage, such as
Kent-Moore tool J 23586-B (V belt),
J 23600-B (Poly-V belt), J 41251-B
®
(PowerBand and 12-Rib Poly-V belt) or
equivalent, when tensioning drive belts.
Tension belts to the values listed in
Table 9.
FAN DRIVE
SINGLE BELT
80-100 lbs
ALTERNATOR DRIVE
BELT NEW
TWO 1/2" 125 lbs
V-GROOVE
2-GROOVE 200 lbs
®
POWERBAND
12-RIB POLY-V 350 lbs
50 DN ALT.
Table 9. Drive Belt Tensioning
V-Belts—New standard V-belts will
stretch after the first few hours of opera-
tion. Tighten V-belts as shown in the chart.
Run the engine for 10 to 15 minutes to
seat the belts, then readjust tension.
Check and retension belts after 1/2 hour
or 15 miles and again after 8 hours or 250
miles (400 km) of operation. Thereafter,
check the tension of the drive belts every
100 hours or 6,000 miles (10,000 km) and
adjust, if necessary.
31
2 OR 3 BELTS
60-80 lbs
USED
100 lbs
150 lbs
250 lbs