Troubleshooting; Engine To Transmission Coupler; Pto System - Toro Groundsmaster 300 Series Service Manual

Troubleshooting

Engine to Transmission Coupler

Problem
Output shaft bearing failure.
Excessive vibration of drive coupling.
Flexible (rubber) couplings wear prematurely.
Pump hub damaged.

PTO System

Problem
Machine vibrates excessively.
PTO drive shaft does not telescope.
Galling of U-joint journal cross-ends.
Abrasive corosion on PTO drive shaft.
Broken U-joint journal.
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Groundsmaster 300 Series
Possible Cause
Lack of lubrication.
Output shaft out of alignment.
Drive coupling bent or deformed.
Loose fasteners.
Drive coupling out of alignment.
Drive coupling bent or deformed.
Loose fasteners.
Drive coupling out of alignment.
Drive coupling bent or deformed.
Loose fasteners.
Drive coupling out of alignment.
Possible Cause
PTO shaft not properly aligned.
Worn bearings or U-joints.
Lack of lubrication to splines and tube.
Drive shaft RPM to high.
Lack of lubrication.
Extreme low angle operation.
Excessive shock loading to PTO shaft.
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