Xray XB2D 2019 Instruction Manual

Contents

43RECOMMENDED PRODUCTS• Use correct oil or grease to lubricate the bearings:#106230 HUDY Bearing Oil#106220 HUDY Bearing Grease - Standard#106221 HUDY Bearing Grease - Blue#106222 HUDY Bearing Grease - RedSUSPENSION & DRIVETRAIN MAINTENANCE• Check suspension for free movement during building and operation, and especially after runningand if you have crashed the car. If the suspension does not move freely, use the appropriate HUDYArm Reamer to clean and resize the holes of the suspension arms.• Regularly inspect and replace the pins that connect the wheel drive shafts with wheel axles. UseHUDY Graphite Grease to lubricate the drive shaft connecting joints and the diff gears.• Pivot balls and ball-joints will naturally wear for some time and will generate play. If there is toomuch play the pivot balls and ball joints need to be replaced.• If the car is run in wet conditions, apply WD-40® on all drivetrain parts before the run. After therun, clean and dry the parts again.HUDY SPRING STEEL™The HUDY Spring Steel™ used in the car is the strongest and most durable steel material on theRC market. While items made from HUDY Spring Steel™ are still subject to wear, the lifespan isconsiderably longer than any other material. As parts made from HUDY Spring Steel™ wear, theMAINTENANCE• For club racing, it is recommended to check the shocks for air inside before each race and only re-filland bleed them if necessary. Before each race day, make sure you take the spring off of each shock,hold it up to your ear, and quickly compress the shock rod fully into the body while listening for anyair making a “whistling” or “squishy” sound as it passes through the piston holes. If you hear anyair, refill and bleed your shocks. For high-competition racing, it is recommended that the shocks bere-filled and bled before a large event.➊ Remove the seals on both sides of the bearing (if present). If the seals bend a little and you can seea kink, carefully flatten the kink out by hand.➋ Spray the seals with motor cleaner and blow dry with compressed air.➌ Spray the bearing on both sides with motor cleaner.➍ Spin the bearing while it is still wet to dislodge any particles with the cleaner.➎ Spray the bearing on both sides again.SHOCK MAINTENANCEThe most important maintenance task for keeping consistent shock performance is refilling and bleeding them correctly. If built correctly, it will not be necessary to re-build them often. Replacing warped/hardo-rings, scarred piston rods, or shaved/split/loose composite upper and lower ball joints are also important.BEARING MAINTENANCEBall-bearings in an off-road car must be properly maintained for smooth operation and long lifespan.The XB2 ball-bearings are degreased and are lubricated with HUDY Bearing Oil or HUDY Grease. The following procedures are recommended to clean all of the bearings in your off-road car. For high-competition racing, we recommended doing this every 3-4 weeks, or before a major race.• If building or pairing new shocks, always make sure they are the same length using a shocklength measuring tool and adjust the lower ball joints as needed.• During regular shock operation, oil naturally gets on the shock shaft and drop-by-drop slightlygets out of the shock body. Shocks should be inspected regularly after each race, and oil replacedas required.➏ Blow both sides of the bearing dry with compressed air to make sure particles come out.➐ Hold the inner part of the bearing with my left thumb/forefinger and spin it to make sure itspins free without any abnormal vibrations or sounds.➑ Place one drop of bearing oil into each side of the bearing.➒ Replace both seals at the same time by lining them up on each side of the bearing andlightly pressing them in all the way around the bearings circumference with your thumb andforefinger. Do not press too hard or use any type of tool, such as a wrench tip, to push theblue seals in as they will push in too far, bend and cause drag.brown color will fade (get lighter) but it will not affect the strength of the material. The browncolor is only a surface treatment and if the brown color will wear the durability of the partwill be still strong.#106210 HUDY GRAPHITE GREASE #106213 HUDY JOINT GREASEorIf you spin test the bearing after you have re-oiled and sealed it, it will not spin freely for anextended period of time. The lightest of oils may allow it to spin for 1-2 seconds. This is nor-mal and once you have mounted the bearings in the car again, the drive train will spin freely.Make sure you use a motor cleaner that does not leave a residue after it dries as this maycause drag and wear in the bearings.HUDY #106230 HUDY #106220 HUDY #106221 HUDY #106222

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