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Date: December 22, 2009 No. B-2061
Replacement
If you have a torque wrench capable of 250 lbf-ft, you can use a torque wrench to install the new pin lock
nuts.
1. Record machine model and serial number.
2. Record both transaxle model and serial numbers.
3. Engage the parking brake.
4. Remove the nut cover.
5. Remove the existing 08621100 (HG p/n 50863) axle nut.
6. Install the pin lock nut p/n 21544033 (HG p/n 53711) supplied in the 51520800 kit and tighten to
250 lbf-ft (338 N•m). Do not overtighten and do not use an impact or pneumatic wrench on the
pin lock nuts.
7. Reinstall the nut cover.
8. Replace the nut on the opposite transaxle.
9. After installing the pin lock nuts, always follow the instructions for removing pin lock nuts in Hydro-
Gear’s service manuals. The pins can damage the axle if the nuts are removed improperly.
If you do not have a torque wrench capable of 250 lbf-ft, use the nut flats method to install the new pin lock
nuts.
1. Record machine model and serial number.
2. Record both transaxle model and serial numbers.
3. Engage the parking brake.
4. Remove the nut cover.
5. Remove the existing 08621100 (HG p/n 50863) axle nut.
6. Install pin lock nut 21544033 (HG p/n 53711) supplied in the 51520800 kit and tighten to
50 lbf-ft (68 N•m). Do not use an impact or pneumatic wrench on the pin lock nuts.
7. Mark a point on the nut and hub (Mark A) and then mark a point two nut flats (120 degrees) over in a
clockwise direction (Mark B). Turn the nut clockwise until Mark A aligns with Mark B.
8. Reinstall the nut cover.
9. Replace the nut on the opposite transaxle.
10. After installing the pin lock nuts, always follow the instructions for removing pin lock nuts in Hydro-
Gear’s service manuals. The pins can damage the axle if the nuts are removed improperly.
A
B
A
B
Mark the nut and
hub here (Mark A).
Then turn the nut until
Mark A aligns with Mark B.
Mark the hub two flats
clockwise here (Mark B).