XtremeAIR XA41, Maintenance Manual, Page: 159 / 284

Maintenance Manual XA41/XA42
AMM-XA42-0040-001 C.00
Page date: Page 13
25.09.2018 Chapter 32
CAUTION
CAUTION
Be careful when you remove the rings, seals and bearings. Do not cause damage to
the wheel and the bearings.
7 Remove the retaining snap rings, the felt grease seals and the wheel bearings.
Inspection and repair:
1 Examine the bearing races for scoring, corrosion, signs of heat damage or other
damage. Loose bearing races are a cause to reject the wheel half. To replace the
race, carefully push it out with a press and use bushings with the correct dimensions
(refer to Figure 32-9).
Figure 32-9: How to push out the bearing race.
2 Visually examine each wheel half for cracks, nicks, corrosion or other damage. Be
careful when you do work in the seat area of the tire bead. Cracks and corrosion are
causes to reject the part.
If you are not sure if parts are serviceable, we recommend that you do a dye-
penetrant inspection. You can remove small nicks, scratches and pits with 400 grit
sandpaper and polish the surface. Then paint the wheel half and/or apply corrosion
preventive compound to prevent corrosion.
Be careful when you dry the bearings with compressed air. The bearings must not turn to
prevent damage.
3
Clean the wheel bearings in an applicable solvent. Dry them with compressed air.
4 Examine the bearings for pitting, cracks, signs of heat damage and corrosion. Each
damage is a cause to reject the part.
5 Examine the felt grease seals. Replace worn, hard and dirty seals. Clean serviceable
seals in a solvent and let them dry in the air. Keep them safely in a clean area for
the assembly.
6 Examine the felt-seal retaining washers and snap rings for distortion, unusual
corrosion or other damage. Each damage is a cause to reject the part.
7 Examine the wheel tie bolts. Cracks, bending, thread damage, or unusual corrosion
are causes to reject the wheel tie bolts. Fatigue-type loads can cause deterioration
of the wheel tie bolts. If you are not sure about their condition, always replace
them.