Troy-Bilt Horse Tiller Technical Manual - Page 12

PTO HORSE MODEL TECHNICAL MANUAL Page 3-2 4/90 SECTION 3: Pre-Service Inspection a. The bolts holding the rear bearing cap may not be sufficiently tightened. b. The washers on the bolts that hold the rear bearing cap may be worn or the bolts may not have been coated with non-hardening gasket sealer. c. The rear bearing cap gasket may have failed. • Inspect the left side of the tiller tine shaft for oil leaks. If you see an oil leak, inspect the following: a. The tiller housing cover may not be sufficiently tightened; check all five bolts. b. The washers on the bolts that hold the tiller housing cover may be worn or the bolts may not have been coated with non-hardening gasket sealer. c. The tiller housing cover gasket(s) may have failed. d. The tiller housing cover oil seal may have failed; find out why. • Inspect the right side of the tiller tine shaft for oil leaks. If you see an oil leak, the oil seal needs to be replaced. Then, discover why the oil seal failed. • Check the tiller tine shaft for play: Using two hands, grasp the tiller tine shaft and rotate the shaft back and forth. You should be able to rotate the shaft slightly and to hear a small click. This means the tiller tine shaft is shimmed correctly. If you cannot rotate the shaft and do not hear a click, it means that the side cover needs to be shimmed outward using various thicknesses of gaskets. This procedure is explained in Section 6 of this manual (see "Tiller Tine Shaft Assembly"). Being able to rotate the shaft more than a small amount and hearing a louder click means the tiller tine shaft is either shimmed incorrectly (too many gaskets) or that the bronze worm gear is wearing out. • There should be no end play, vertical play or diagonal play in the tiller tine shaft. If you find such play, tighten the tiller housing cover bolts. If this does not eliminate the play, a shim may need to be installed on the tiller tine shaft, as explained in Section 6 of this manual. PTO Power Unit and Tiller Attachment Drive Shaft Connection - Engage the Tines/ PTO Clutch Lever and turn the pulley at the front of the PTO power unit. The dog clutches between the tiller attachment and the PTO power unit should engage and the tiller tine shaft should move as you turn the pulley. If the dog clutches do not engage, the Tines/PTO Clutch Lever may need to be adjusted.