DURAFLO™ 18 GPM PUMPING STATIONS
1MANUL375
Belanger, Inc.® * PO BOX 5470 * Northville, MI 48167-5470* Ph (248) 349-7010 * Fax (248) 380-9681
25
Maintenance
Drive Belt Replacement and Tightening
7) Measure the belt span (shown below).
8) Position the bottom of the belt gauge’s large o-ring on the Span Scale at the measured belt span
(14”).
9) Set the small o-ring on the Deflection Force Scale to zero.
10) Place the tension tester squarely on the back belt at the center of the belt span. Apply a force on
the plunger and perpendicular to the belt span until the bottom of the large o-ring is even with the
top of the next belt (14” on the scale).
11) Remove the tension tester and read the force applied from the bottom of the small o-ring on the
deflection force scale.
12) At this point the back belt tension should read 7 lbs for a new belt or 5 lbs for a used belt.
13) Tighten bolt (B2) and rotate the large pump pulley CCW 2 turns.
14) Tighten adjustment screw (D) until the front belt is at 7 lbs for a new belt or 5 lbs for a used belt.
15) Tighten fasteners (B1, A1 and B2).
16) Check the tension of the other belts. It should be 7 ± 2lbs for a new belt or 5 ± 1lb for a used belt.
NOTE:
SEE THE BELT-TIGHTENING CHART AND THE IMAGES
ON THE PREVIOUS PAGE.
17) Belt tension will affect pulley alignment. Check the pulley alignment with a straight edge on the
large pulley, extending up to the small pulley. If they are not within 1/8” then the loosen belts, slide
the small pulley in or out the amount they were off, and repeat steps 5 thru 16.
18) Tighten Jam Nut (
C
).
19) Replace the Belt Guard.
20) Turn the system Main Disconnect back on.
Belt
Span
14”
Span
Length
Deflection
Front Belt
Rear Belt
