Alamo EAGLE 10/15 8.2 Constant Velocity (CV) Driveline

OPERATION

EAGLE 15 03/09 Operation Section 4-17

OPERATION

8.2 Constant Velocity (CV) Driveline

For mowers equipped with a Co nstant Velocity (CV) driveline, the maximum turning angle betwe en the tr actor

and mower must be determined to ensure the joint angle does not over-extend which can cause CV joint

damage. Constant Velocity joints enable the driveline to operate smoothly with no vibrations and clattering at

angles up to 80°. Angles greater than 80° can result in mechanical damage to the CV joint and mower

driveline.

The Constant Velocity joint must be lubricated every 8 hours of operation as specified in the Maintenance

Section. Failure to properly lubricate the joint will result in accelerated wear and joint component failure.

CV Driveline Maximum Angle Check Procedure

•With the mower att ach ed to the tr actor and the drive line disconne cted fr om th e tracto r PTO stub make

a hard left turn until there is approxim a te ly a 1" clearance between the left rear tractor tire and mower

frame or tongue.

• Stop and comple tely sh ut do wn th e tra ctor. Place the tractor in Park and a pp ly the Par king Bra ke be fo re

dismounting.

• Check the CV joint at this m aximum turn ing radius b y holding the driveline yoke a bove th e PT O shaf t and

then angle the CV joint to its maximum angle. A minimum difference of 10 degrees between the center

line of the yoke and the PTO shaf t mu st be maintained to ensure the joint will not be over angled. If the

joint cannot be angled at least 10°, there is a potential problem of over-angling the joint while making

sharp turns.

• Solutions: To ensure the joint is not damaged, check the following:

Check the drawbar length to ensure tha t it is at th e proper length for the RPM speed of the mower.

Move the tractor rear tires wider apart to limit the tractor turning radius.

Position the mower at multiple angles and perform the above procedure. Determine the sharpest turning

radius that maintains a safe oper a ting an gle and note this position to the operator. OPS-R-0006_B