This month we are talking about three things: Brake Pads, Pinion Seals, and Breather Vents.
Brake pads on Tucker Sno-Cat® machines should last a long time due to very little use. They could wear prematurely and lose their function from misalignment or being covered in grease. Check your mounting bracket and make sure that, when applied, the pads contact to rotor evenly.
Summer service is a good time to check breather vents on differentials. Consider extending the vent into the engine compartment. If the differentials are filled to their correct level and are parked sideways on a slope, especially in the summer, fluid could possibly drain out of them. Extending the vent will eliminate this and keep moisture out when driving through deep water.
Leaking pinion seals may be an indication of a worn pinion bearing. Do a quick check by grabbing the drive line where it connects to the differential, and look for any up-and-down or side-to-side movement in the yoke.