Mackay trailers are built in a quality controlled environment, with quality components and trailers are backed up by a proven warranty. Mackay uses the highest quality seals in the industry.Įnsure your trailer is built with the best quality components. Use double lip marine grease seals for better protection against water ingress. Also ensure that you have the correct bearings, and that these are well seated in the hub. Use the correct grease with your bearings this should be high temperature marine grease, ideally lithium based, which will not degrade with water.Ĭarry a spare set of bearings with you and better still a spare hub with bearings in it – to make any changeover very easy. If they are ‘overheating’ then if prepared, attend to them yourself, or head to the nearest garage/ workshop for some assistance. They should not feel any hotter than a cup of coffee. After a long trip to the ramp, your bearings & grease will have heated up – but once the bearings are submerged, the cool temperature will cause the grease to contract and ‘suck in’ water into the bearing cavity.įeel your hubs for excess heat when travelling. Wait for the bearings to cool off before submerging the trailer in water. All Mackay trailers are supplied with high quality bearing buddies or covers. You’re only inviting water in, and major problems down the line. So not submerge the bearings of the trailer in the water, without a bearing cover of sorts. Covers can and do fall off however they should be replaced immediately. How deep you go is also governed by how steep or shallow the ramp is.Įnsure your bearings have a cap, cover or bearing buddy. On a single axle trailer, aim for somewhere between the axle and top of the guards and with tandems, do not submerge below the front axle line. Mackay trailer designs supports the launch and retrieval of your boat without deep submerging of the trailer. Try and avoid submerging your bearings (and trailer) too deep in the water if you can help it. Repack the bearing with grease if required, but never overfill the cavity or bearing buddy. Milky grease is a sign that it has been compromised by water. Deterioration can happen quickly and often results in problems occurring at the worst possible time.Ĭheck the grease levels yourself, either by removing the cap or bearing buddy, or looking through the clear lens of the Durahubs (that Mackay use). Even if your trailer is not being used, condensation of air occurs in the bearing cavity and can cause rust to commence. Get your bearings serviced regularly – at least once per 6 months, and definitely before a major trip. Mackay Trailers provides 10 tips on how to avoid bearing failure. Bearing Buddy is also available with a stainless steel barrel for maximum corrosion protection.The number ONE reason for boat trailer nightmares is Bearing Failure? Internal Bearing Buddy parts are made of stainless steel. The outer barrel is made of steel and is triple chrome plated. Bearing Buddy will last the life of your trailer. If you can rock or move the piston, the hub is properly filled. Lubricant level (and pressure) can be checked quickly by pressing on the edge of the moveable piston. Grease can be added to the hub through an easily accessible grease fitting located in the center of the piston. Without this feature, the inner seal will be damaged. An automatic pressure relief feature prevents over-filling and over pressurization. When the hub is submerged, water cannot enter the hub because of this pressure. Because the piston is spring loaded, the piston exerts a slight (3 psi) pressure against the grease, which maintains a slight pressure between the inside of the hub and the outside environment. HOW BEARING BUDDY WORKS The axle hub is filled with grease until the grease forces the Bearing Buddy piston outward about 1/8 inch. Moisture stays in the hubs causing rust and pitting until they are reheated when the trailer is used again. These trailers, because they are not used regularly, are also subject to bearing corrosion and failure from condensation moisture from air sucked into hot hubs as they cool. Utility Equipment, ATV, Horse, Camping, and other occasional use trailers Boat trailer wheels can be completely submerged. When properly installed and maintained, Bearing Buddy® prevents wheel bearing failure and eliminates bearing repacking. Water and grit thus drawn into the hubs relentlessly destroy bearings. There is no such thing as a rotating seal that stays perfect. When the wheels are submerged during launching, the hubs suddenly cool and the air inside the unprotected hubs contracts, forming a vacuum which draws in water through the rear seals. Trailering, even a short distance, heats the hubs.
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