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9.4.2. Replacement of cardan hinges

Service of cardan hinges is made in a complex. Remnabor includes a crosspiece, four needle roller bearings with cups, epiploons and lock rings. Dismantling of cardan hinges differently as is not recommended to be made for replacement of components.

Do not clamp a sleeve of the driveshaft or the coupling of the sliding joint too hardly in a vice in order to avoid irreversible deformation of covers.


 PERFORMANCE ORDER

  1. Remove the driveshaft from the car. Mark the adjusting provision of the sliding joint and the flange holder of a crosspiece in relation to a shaft body.
  2. Separate the sliding half from a shaft.
  3. Remove the lubricant union from the cardan hinge (if that is established).
  4. By means of pair of screw-drivers and the hammer take lock rings of cups of bearings in holders of a crosspiece.
  1. Clamp a hinged part of a shaft in a vice, having enclosed replaceable heads, on the one hand with outer diameter it is slightly less than ø of a cup, with another - with internal is slightly more than diameter of cup (see an accompanying illustration).
  1. Squeeze out a cup of the holder until the crosspiece does not rest against a wall of the last.
  2. Take out a shaft from a vice and take the squeezed-out cup and rollers of the needle bearing from the holder.
  3. Again clamp a shaft in a vice and wring out a crosspiece in an opposite direction.
  4. Take out a shaft from a vice and shoot a cup and videos of the opposite needle bearing.
  5. Remove the sliding half or a flange from a shaft.
  6. Repeat procedures of the last five paragraphs (for the sliding half of a shaft or for a flange), having finished thereby dismantling of hinges (components of the cardan hinge are shown on an accompanying illustration).
1 — needle roller bearings
2 — the holder of a crosspiece equipped with a flange
3 — lock rings
4 — the holder of a crosspiece from a shaft
  1. Clean openings in brackets of holders, having removed any agnails and roughnesses from their edges and walls.
  2. Grease rollers and cups of bearings with universal lubricant.
  3. Partially fill a cup of one of bearings in corresponding the holder.
  4. Establish a new crosspiece in the holder, then fill a cup from the opposite side.
  5. Clamp the holder in a vice, pressing in him cups of bearings, at the same time watching that rollers of bearings did not drop out.
  6. By means of a replaceable face head on diameter slightly less cup drown one of cups in the holder before full opening of a flute under installation of a lock ring.
  7. Do the same with an opposite cup.
  8. Establish lock rings, check an axial side play of a crosspiece - it should not exceed 0.02 mm.

The difference in thickness of opposite lock rings should not exceed 0.06 mm. In case of need center the provision of a crosspiece and cups of bearings.

  1. Tap a crosspiece the hammer for the choice of a gap between the holder and a lock ring and make sure that the axial side play of a crosspiece does not exceed 0.02 mm.
  1. Make sure of freedom of rotation of the hinge in all directions. If the hinge rotates a little hardly, install the driveshaft in a vice and slightly tap holders of a crosspiece the hammer, trying to obtain centering of bearings (see an accompanying illustration).
  1. Repeat procedures of the last eight paragraphs for the opposite hinge of a shaft. Install a shaft on the car.