Replacing Fan Variable Speed Drive Belt

IMPORTANT: Do not adjust fan speed with the threshing unit disengaged.

Remove the elevator drive belt (B) and pulley (C). Remove belt (D). Loosen mounting bolt and remove the pulley (E).


A-Fan Speed Regulator
B-Belt
C-Pulley
D-Belt
E-Pulley

ZCQF1301

Manual adjustment

ZX010325

Electrical adjustment

ZCQF3472

ZX,OMSLC007782 -19-11JAN97-1/2


Removing Drive Belt

Remove pivot arm (A) and bolt (B) on both sides of yoke (C). Remove snap ring (D) and take out flange (E) with bearing (F).

Remove belt (G) from the lower fan drive unit.

Remove belt (G) over outer variable pulley (H) and yoke (C). The pulley comes out over the bearing support opening (I). Pull the belt out through the opening. Reverse these steps to install the new belt.

NOTE: Make sure the upper pulley lugs are correctly connected. First put the belt on the upper unit.


A-Pivot Arm
B-Bolt
C-Yoke
D-Snap Ring
E-Bearing Support Flange
F-Bearing
G-Belt
H-Outer Variable Pulley
I-Bearing Support

ZCQF3911
ZCQF3921

ZX,OMSLC007782 -19-11JAN97-2/2