A lot of people ask me about my maintenance routine on my XRAY X4 cars. What to maintain, how & when. See below:

  1. Hub bearings - add oil and replace when gritty/notchy.

  2. Diff and solid axle bearings, same as above.

  3. Re-grease CVD and ECS driveshafts.
    Replace them altogether or just the couplings/case when excessive play has developed.

    How to:

  4. Rebuild shocks before every race day.
    Rebuild differential for every few race days.
    Replace shock o-rings and membranes every few races.

    How to:

  5. Check wear on the drive belt, center pulley, o-ring/clip as well as center pulley bearings. Replace when worn.

  6. If running on asphalt, especially with a carbon chassis, replace when chassis has become too worn/thin or when warped.

  7. Check upper and lower arms for flatness after a crash.

  8. Bodyshell! Repair or replace when worn. Don't overlook this.
    Same for the rear wing. Aero matters.
    Pay extra attention to cracks in the highlighted areas of the picture below.

Source:

A. Hagberg