Page 26 - DRAGO GT Operators Manual

Section 3 – Attaching/Detaching Corn Head

3.4 – PTO Shaft Phasing

Important: For all GT corn heads, 30
degree free rotation drive shafts are
standard equipment. It is important that
they are mounted on the correct side of the
corn head to prevent damage to the shaft.
Each driveshaft has a decal indicating the
direction of rotation.

1) Determine which direction the feeder house
jackshaft (A) is turning. Typically direction of
rotation is with the top of the shaft going
forward.
2) Disconnect the PTO shaft from the combine.
3) Rotate the PTO shaft in the direction of
rotation determined in Step 1 until the PTO
shaft stops. This is the position that the PTO
shaft will be in during operation.
4) Inspect both ends of the PTO shaft to see if the
u-joint caps are in line (in phase).
a. If the PTO shaft is installed correctly
the u-joint caps will be in line (in phase
(B)).
b. If the PTO shaft is installed incorrectly
the joints will be 30 degree out of line
(out of phase (C)).
5) If a PTO shaft is found to be out of phase
install the PTO shaft on the opposite side of the
corn head and repeat Steps 1-4.

Important: If the shafts are run out of
phase it will cause permanent damage to the
PTO shaft.

In Phase
Note: The guards on the PTO shafts were removed
from the two images for clarity.

Out of Phase

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