Perkins 2806A-E18TA Operation And Maintenance Manual page 79

SEBU9074-06
Slippage of loose belts can reduce the efficiency of
the driven components. Vibration of loose belts can
cause unnecessary wear on the following
components:
• Belts
• Pulleys
• Bearings
If the belts are too tight, unnecessary stress is placed
on the components and reduces the service life of the
components.
Replacement
For applications that require multiple drive belts,
replace the drive belts in matched sets. Replacing
one drive belt of a matched set will cause the new
drive belt to carry more load because the older drive
belts are stretched. The additional load on the new
drive belt could cause the new drive belt to fail.
To replace the alternator belt, refer to Disassembly
and Assembly, Alternator Belt - Remove and Install.
To replace the fan belts, refer to Disassembly and
Assembly, V-Belts- Remove and Install.
Belt Tension
Table 14
Alternator and Fan Belt Tension
Belt Type New Belt
Tension
Used Belt Reset Belt
Tension with Tension
fewer than 10
Hours in
Operation
(continued)
Belts - Inspect/Adjust/Replace
(Table 14, contd)
645 ± 44 N
Alternator
(145 ± 10 lb)
belt
Fan Belt 801 ± 44 N
(180 ± 10 lb)
Alternator Belt Adjustment 2806A
and 2806C
Illustration 42
Typical example
1. Remove guards, refer to the Original Equipment
Manufacture (OEM) for the correct procedure.
2. Loosen nut and bolt (2) and loosen nut and bolt
(3).
3. Adjust alternator (1) to obtain the correct tension
on the belt. Use a suitable belt tension tool to set
the belt tension.
4. Tighten nut and bolt (2) and tighten nut and bolt
(3).
79
Maintenance Section
512 ± 44 N 311 ± 44 N
(115 ± 10. lb) (70 ± 10 lb)
645 ± 44 N 378 ± 44 N
(145 ± 10 lb) (85 ± 10 lb)
g06108813