Xray XB8E'21 Instruction Manual Download

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• For club racing, it is recommended to check the shocks for air inside before each race and only re-fill

and 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 any

air making a “whistling” or “squishy” sound as it passes through the piston holes. If you hear any

air, refill and bleed your shocks. For high-competition racing, it is recommended that the shocks be

re-filled and bled before a large event.

• If building or pairing new shocks, always make sure they are the same length using a shock length

measuring tool and adjust the lower ball joints as needed.

• If installing new rubber bladders, carefully trim the thin excess rubber from the edges of their lips.

Curved body scissors work the best.

• Regularly inspect the amount of dirt on the felt protector in the shocks (if present) and regularly

replace with a new one.

• During regular shock operation, oil naturally gets on the shock shaft and drop-by-drop slightly gets

out of the shock body. Shocks should be inspected regularly after each race, and oil replaced as

required.

1. Remove the seals on both sides of the bearing (if present). If the seals bend a little and you can see

a kink, carefully flatten the kink out by hand.

2. Spray the seals with motor cleaner and blow dry with compressed air.

3. Spray the bearing on both sides with motor cleaner.

4. Spin the bearing while it is still wet to dislodge any particles with the cleaner.

5. Spray the bearing on both sides again.

6. Blow both sides of the bearing dry with compressed air to make sure particles come out.

7. Hold the inner part of the bearing with my left thumb/forefinger and spin it to make sure it spins free

without any abnormal vibrations or sounds.

8. Place one drop of bearing oil into each side of the bearing.

9. Replace both seals at the same time by lining them up on each side of the bearing and lightly press-

ing them in all the way around the bearings circumference with your thumb and forefinger. Do not

press too hard or use any type of tool, such as a wrench tip, to push the blue seals in as they will push

in too far, bend and cause drag.

If you spin test the bearing after you have re-oiled and sealed it, it will not spin freely for an extended period of time. The lightest of oils may allow it to spin for 1-2 seconds. This is normal 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 may cause drag and wear in the bearings.

SHOCK MAINTENANCE

The 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/hard rubber bladders and o-rings, scarred piston rods, or shaved/split/loose composite upper and lower ball joints are also important.

BEARING MAINTENANCE

Ball-bearings in an off-road car or truggy must be properly maintained for smooth operation and long lifespan.

Typically, the ball-bearings included in new cars are greased for highest lifespan and as such the drivetrain may not seem to be as free as with lightly-oiled ball-bearings. However, when the car is run the ball-

bearings will become more free and the drivetrain will become very efficient.

There are several types of bearings discussed here: bearings which already come greased from the factory, bearings which must be lubricated using the HUDY Bearing Grease, and then there are also bearings in

the steering system which need to be lubricated with HUDY Bearing Oil.

The following procedures are recommended to clean all of the bearings in your off-road car or truggy. For high-competition racing, we recommended doing this every 3-4 weeks, or before a major race.

MAINTENANCE