17
When a pair of drive belts are used, adjust the tension for
the tightest belt.
A gauge is available that will indicate the tension in the
drive belt. Fit the gauge at the center of the longest
length of the drive belt and measure the tension. See
FIGURE 16. The correct tension is approximately 355
N (80 lb
f
).
FIGURE 16. GAUGE TO CHECK DRIVE BELT
TENSION
FIGURE 17. CHECK AND ADJUST DRIVE
BELT TENSION (DIESEL)
1. PIVOT FASTENER
2. ADJUSTMENT LINK
12593
1
2
The tension can also be checked by pushing on the drive
belt as shown in FIGURE 17. Push on the drive belt with
approximately 10 kg (20 lb) force between the alternator
and crankshaft pulleys. When the tension is correct, the
drive belt will move approximately 13 mm (0.5 in).
Loosen the capscrew on the alternator mount to adjust
the tension of the drive belts.
FIGURE 18. CHECK AND ADJUST DRIVE
BELT TENSION (GM V–8)
1. PIVOT FASTENER
2. DRIVE BELT, AIR COMPRESSOR
3. DRIVE BELT, FAN AND ALTERNATOR
1
2
1
3
MAST (See FIGURE 19.)
WARNING
Lower the lift mechanism completely. Never allow
anyone under a raised carriage. Do not put any part
of your body in or through the lift mechanism unless
all parts of the mast are completely lowered and the
engine is STOPPED.
Before making any repairs, use blocks and chains on
the mast weldments and carriage so that they can not
move. Make sure the moving parts are attached to a
part that does not move.
