Service Bulletin

Ref: 03-04 Copyright, 2003. The Toro Company
Customer Service Bulletin
Commercial Business Group
All machines with Kubota D1105 and D1105-T engines. November 6, 2003
Model No: Serial Numbers: Model No: Serial Numbers:
03200 90101-230009999 30241 210000101-230009999
03201 90101-230009999 30242 210000101-230009999
03540 80101-230009999 30626 210000101-230009999
03541 80101-210009999 30627 210000101-230009999
03543 80101-230009999 30630 210000101-230009999
03544 80101-230009999 30631 210000101-230009999
30821 200000101-230009999
SUBJECT: Vibration in Traction Units with Kubota D1105 series engines.
SITUATION: There are various factors that may induce vibration in the D1105
engines, such as broken motor mounts, bent pulleys, and loose
fasteners. The engine is externally balanced by the Fan Drive Pulley.
CORRECTION: When investigating vibration issues on products with a Kubota D1105
Series engine, start by checking the following components: motor
mounts, fasteners, belt condition, pulleys, driveshaft, and coupler. The
alignment of the Fan Drive Pulley (crankshaft pulley) to the front of
the crankshaft (gear case side) should be inspected only after checking
all external factors first. Remove the bolt and verify that the marks are
in alignment. If after inspecting, the marks are found to be out of
alignment, realign them. Then, retorque crankshaft end bolt to the
Kubota Service Manual specifications listed in the table below. If you
have questions regarding this issue, contact your Toro Distributor.
TIGHTENING TORQUES FOR CRANKSHAFT END BOLT
Engine Serial No N·m kgf·m lbs-ft
(VA0001-YZ19999) 235 to 245 24 to 25 174 to 181
(1A0001 and above) 235 to 245 24 to 25 174 to 181