Detroit Diesel 60 Specifications download pdf (Page 75)

MAINTENANCE

Item 7 – Tachometer Drive

A typical tachometer drive take-off

location 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) w ith 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 temperature.

Item 8 – Drive Belts

Belts should be n e ither too tight no r

too loose. Belts that are too tight

impose extra loads on the crankshaft,

fan and/or al tern ator 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 accessory components.

PERSONAL INJURY

To avoid injury from rotating belts

and fans, do not remove and

discard safety guards.

Use a belt tension gage, such as

Kent-Moore® too l J 23586–B

(V-belt), J 236 00– B (poly-V belt),

J 41251 (Pow erBan d® and 12–rib

poly-V belt), or equivalent, when

tensioning drive belts. Tension belts

to the values listed in Table 13.

V-Belts — New standard V-belts

will stretch after the ﬁrst few hours

of operation. Tighten V-belts as

listed in Table 13.

Fan Drive

Single Belt 2 or 3 Belts

80 – 100 lbs (356 – 4 45 N) 60 – 80 lbs (267 – 356 N)

Alternator Drive

Belt New Used

Two 1/2–in. V-Groove 125 lbs (556 N) 100 lbs (445 N)

2–Groove PowerBand® 200 lbs (890 N) 150 lbs (667 N)

12–Rib Poly-V (50 DN Alternator) 350 lbs (1,557 N) 250 lbs (1,112 N)

Table 13 Drive Belt Tensioning

64 All information subject to change without notice. (Rev. 06/06)

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 152 153

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Detroit Diesel 60 Specifications Page 75

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