Belt Tensioning Adjustment - Beta Marine Beta 14 Installation Manual

ALTERNATOR BELT TENSION
WARNING!
Belt tension must only be checked with the
engine switched off.
BATTERY CHARGING ALTERNATOR
These engines are fitted as standard with with either a
Polyvee (Beta 10 to Beta 45T) or an "A" profile (Beta
43 to 115T) belt that drives both the battery charging
alternator and the fresh water/engine coolant circulating
pump.
1. The belt tension is adjusted by swinging the DC
alternator outboard as it pivots on its support bolts.
Please refer to image 61 or 62.
2. With the engine stopped, loosen the support bolts and
the link adjusting bolt.
3. Push alternator outboard by hand to tension the belt,
then tighten link bolt.
4. Check that the depression of the belt (at position
shown) is approximately
down firmly by thumb. Tighten support bolts. Please
refer to image 63.
IMPORTANT!
Tension drive belts by hand only, do not over
tension.
5. Belt tension should be regularly checked especially
during the first 20 hours of running in a new belt, as
stretching occurs.
SECONDARY DOMESTIC BATTERY CHARGING
ALTERNATOR
The same method applies as outlined above when an
engine is fitted with a secondary domestic battery bank
alternator and/or travel power.
1 / " or 12 mm when pushed
2
61 Beta 10 to 45T Polyvee Drive Belt
62 Beta 43 to 115T "A" Profile Drive Belt
63
Secondary Alternator Set Up Beta 30 - Beta 115T
59
Adjuster
bolt