- 26 -
4. MAINTENANCE
K
4
2
1
Eccentric weight down
Sheave orientated same
direction as eccentric weight
retighten engine bolts. Adjustment should be
made when eccentric is down. Using a straight
edge maintains sheave alignment while tightening
engine mounting bolts. Proper tension is obtained
when a two lb. force is applied midway between
the two sheaves and a 1/4" to 1/2" (6.4 mm to 12.7
mm) deflection of the belt is obtained. For best
performance and longest belt life, use only Stone
specified Kevlar belt.
Adjust belt tension by adjusting engine with pusher
bolt. Secure pusher bolt with jam nut. Secure
engine nuts.
4.6 OFFSET ECCENTRIC SHEAVE
In order to ease assembly and ensure the
relationship between the eccentric and the off-set
sheave is correct, we added a keyway to the
eccentric (4) and drilled and tapped the sheave
(2) in a specific relationship to the off-set and the
mounting holes in the taper lock bushing (1).
NOTE: Models S-20, S-20A, S-28 & S-28A
do not have an offset sheave.
The K stamped on the sheave must be near the
key when the hub is installed in the sheave.
The proper alignment is therefore assured during
assembly and any subsequent re-assembly during
maintenance.
To Next Page
Loading...
