TYM T303HST, Workshop Manual

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(4) GEAR
①
With clean working fluid,surfaces are rarely
scratched and should be smooth.
②
If roughness can be felt by a finger nail,they
are darkened,or the shaft diameter is less than
0.03 mm replace the shaft.
③
Usable shaft diameter is as below
Fig.9-28 gear shaft
(5) Oil seal
The oil seal prevents oil leaks by its inner seal lip and
dust from invading by its outer dust lip.Therefore if
an oil seal has damaged or deformed lips,it should be
replaced.
(6)MEASUREMENT OF THE PUMP
The best way to measure for the pump is to use a
special tester.
But if it's not available,Use installed tractor
Remove the plug in the delivery pipe on the right-
hand side of the transmission case and install a
compression gauge to measure the pressure.
Keep the engine speed at 2600 rpm and shift the
position control lever at the highest position.
9-14