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WIM-TD-002_C
3.1.0
REQUIREMENTS FOR PROPER OPERATION AND SERVICE LIFE
3.1.1
Preparation.
Upon receipt of your WPT product, inspect for and report any evidence of
damage. To avoid damage or personal injury, ensure that adequate lifting devices and hand
tools are available. Compare the flywheel, flywheel housing to the bell housing, drive ring
respectively to ensure that you have the correct size unit.
3.1.2
Check flywheel and flywheel housing alignment
. It is strongly recommended that dial indicator
checks be made prior to installation of the PTO, especially on new engines or when a previous PTO
failure might indicate an alignment problem.
3.1.3
Flywheel to housing face run out inspection.
Mount the indicator base on the face of the flywheel and position the dial indicator tip
perpendicular to the flywheel housing mounting face. Rotate the flywheel 360 degrees while
applying force to the crankshaft thrust bearing. The total indicator reading should not exceed
the values listed in the table shown below in Section 3.1.4.
3.1.4
Check flywheel housing bore runout.
Mount the indicator base on the face of the flywheel and
position the dial indicator tip so its movement is perpendicular to the pilot bore of the flywheel
housing. Rotate the flywheel through 360 degrees.
The total indicator reading should not exceed:
SAE “00” Housing: 0.019 inches
(0.483 mm)
SAE ”0” Housing: 0.016 inches (0.406 mm)
SAE ”1” Housing: 0.012 inches (0.305 mm)
SAE ”2” Housing: 0.011 inches (0.279 mm)
SAE ”3” Housing: 0.010 inches (0.254 mm)
SAE ”4” Housing: 0.009 inches (0.229 mm)
SAE ”5” Housing: 0.008 inche
s (0.203 mm)
SAE ”6” Housing: 0.007 inches (0.178 mm)
(Reference: SAE J617 table 1A)
