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8.8. Removal, survey and installation of components of coupling

Removal

Access to coupling is usually provided with removal of transmission, without removal of the engine from the car. If the engine nevertheless has to be removed for capital repairs, then it is necessary to seize the opportunity and to check coupling for existence of signs of wear, replacing worn-out components as necessary. The procedure described below assumes that the engine is in the car.

 PERFORMANCE ORDER

  1. Remove transmission from the car, having used recommendations of the Head the Manual Box of Gear Shifting (MBGS).
  1. For support of a clutch plate during removal insert the tool for centering of coupling or an old entrance shaft of transmission into the middle of a basket of coupling.
  1. Attentively examine a flywheel and press a disk, looking for combination tags. If there are no those, put them with a scraper or paint that press the disk and a flywheel at assembly were established in the same situation rather each other.
  1. Release bolts of fastening of a press disk to a flywheel (are specified by shooters), turning each of them gradually for time. Do it on diagonals until you take off all pressure of a spring.
  1. Take press a disk and completely give bolts, then separate press a disk and the conducted disk from a flywheel. Pay attention in what party the clutch plate is wound.

Survey

Usually, when there are problems in coupling work, them it is possible to charge to wear of assembly of the conducted clutch plate. However, it is necessary to check at the same time and other components.

 PERFORMANCE ORDER

  1. Examine a swing wheel (see the Part the Repair work which is carried out without extraction of the engine from the car).
  1. Check the directing bearing on the end of a bent shaft. Make sure that it rotates smoothly and quietly.
  1. If the surface of contact of the bearing with an entrance shaft of transmission is damaged or worn-out, replace the bearing.
  2. By means of a stripper remove the directing bearing.
  1. Install the new bearing by means of a replaceable head and the hammer.
  1. Examine an overlay of a clutch plate.
1 — the Slip - it wears out during the coupling work
2 — Rivets - they hold a slip, and can damage press a disk or a flywheel if adjoin to their surfaces
3 — Inscriptions - "Flywheel side" (the party turned to a flywheel) or something similar
  1. Check whether there are no pollution traces oil and the general signs of wear. If the slip is polluted or worn-out, replace a disk. Check also a beating and thickness of a clutch plate, then compare results to the sizes specified in the Size table and adjusting data at the end of the Management. If the disk too thin or is deformed, replace it. Check whether there are no stirred-up rivets, curvatures, cracks, the broken springs or other obvious damages. As it was stated above, a clutch plate usually replace every time when it is removed therefore if there are any doubts concerning its state, replace it better.
  1. Usually release bearing (1), replace along with replacement of a clutch plate. Remove the bearing from an entrance shaft.
  1. It is also recommended to release a returnable spring (3), to remove the lever of switching off (2) and to examine deepening for a tip of a pusher of the executive cylinder. You make installation of the lever of switching off of coupling and the bearing upside-down.
  2. Check a working surface of a press disk. If it has cracks, furrows, scratches, oil or colourless spots from an overheat, or other damages, the disk should be replaced. Apply the planeness measuring instrument to a surface and make sure that it is flat.
  1. Check whether there are no stirred-up rivets or the deformed spring petals.
  1. If there are any signs of wear of a press disk, replace it. It is recommended to take for the rule to replace all components of coupling in collecting (the conducted disk, press a disk and the release bearing) or if old components worked rather long time.

Installation

 PERFORMANCE ORDER

  1. Before installation carefully clear working surfaces of a flywheel and a press disk. Work with these components only clean hands. Do not allow hit of oil or dirt on frictional surfaces of components of coupling.
  2. Place conducted and press disks on a flywheel, holding the conducted disk on the place by means of the tool for coupling centering. Track that the conducted disk was established correctly (new disks usually have marking of "Flywheel side" - the party turned to a flywheel - or something similar). At installation of an old press disk make sure that the combination tags put earlier coincided.
  3. Tighten bolts of fastening of a press disk to a flywheel only fingers, working around.
  4. If it is not made yet, install the tool for centering of coupling in the middle of a basket of coupling (see an illustration). Move a disk that the tool appeared precisely on the center and an entrance shaft of transmission easily entered through a disk the directing bearing. If a disk badly отцентрован, it is impossible to establish transmission.
  5. Tighten bolts of fastening of a press disk to a flywheel gradually in turn, moving on diagonals to avoid deformation of a press disk, with the required effort.
  6. Grease with high-temperature lubricant all internal surface of the release bearing. Make sure that the interior of a lubricant flute is filled. Apply lubricant as well on a ball nest, and on fork fingers.
  7. Establish transmission, the executive cylinder and all earlier removed components.