7.2.7. Dismantling, check and generator assembly

Fig. 7.19. Generator components: 1–pulley; 2–sealing ring; 3–rotor assembled; 4–back bearing; 5–holder of the bearing; 6–forward arm of the generator; 7–forward cover; 8–stator; 9–level; 10-regulator of tension and shchetkoderzhatel; 11-brush; 12-brush spring; 13-dustproof ring; 14-vypryamitelny block; 15-back arm of the generator

Unscrew three coupling bolts.

Fig. 7.20. Removal forward кронштейга generator

Insert a flat screw-driver between a forward arm of the generator and a stator and, operating with a screw-driver as the lever, separate (down) a forward arm of the generator (fig. 7.20).

ATTENTION Do not insert a screw-driver too deeply not to damage a stator winding.

Fig. 7.21. Heating of knot of the bearing by means of a soldering iron

It can appear that will remove a back arm of the generator difficultly as stirs the lock ring used for fixing of the back bearing. For simplification of removal of a back arm warm up bearing knot by means of a soldering iron in capacity of 200 W (fig. 7.21).

Do not apply to heating the thermal gun as damage of vypryamitelny diodes in this case is possible.

Fix a rotor in a vice so that the party with a pulley was above.

ATTENTION Watch that sponges of a vice did not damage a rotor.

Unscrew a nut of fastening of a pulley, remove a spring washer, then remove a pulley and a pro-rate.

Remove a forward arm of the generator and two sealing rings.

Take a rotor from a vice.

Fig. 7.22. A detachment of a nut of a conclusion "In" the generator

Unscrew screws of fastening of a shchetkoderzhatel and the vypryamitelny block. Then unscrew a conclusion nut "In" the generator (fig. 7.22).

Remove a stator assembled from a back arm.

Remove a dustproof ring from a shchetkoderzhatel.

Before stator removal отпаяйте three wires of a winding of a stator from the main diodes of the vypryamitelny block.

ATTENTION At a soldering / raspayka of contacts, be careful, that heat from a soldering iron influenced diodes as little as possible. Make these operations as soon as possible. Be careful not to put excessive efforts to contacts of diodes.

Fig. 7.23. Places of the soldering of contacts of a shchetkoderzhatel

Before a detachment of the vypryamitelny block from a shchetkoderzhatel отпаяйте two contacts soldered to the vypryamitelny block (fig. 7.23).

Fig. 7.24. Stock-taking of the closed chain between contact rings

Check absence of break in a rotor winding. Check existence of the closed chain between contact rings (fig. 7.24).

If resistance too little (aspires to 0), it testifies to existence of short circuit. In case of break in a chain of a winding of a rotor or existence of short circuit replace a rotor assembled.

Resistance: about 3,1 Ohm.

Fig. 7.25. Check of absence of short circuit of a winding of a rotor on "weight"

Check absence of short circuit of a winding of a rotor on "weight" (fig. 7.25).

Check lack of the closed chain between a contact ring and the core. In case of existence of the closed chain (short circuit with "weight") replace a rotor assembled.

Check absence of break in a stator winding.

Fig. 7.26. Stock-taking of the closed chain between conclusions of a winding of a stator

Check existence of the closed chain between conclusions of a winding of a stator. If the chain of a winding is opened (resistance aspires to infinity), replace a stator assembled (fig. 7.26).

Fig. 7.27. Check of absence of short circuit of a winding on "weight"

Check absence of short circuit of a winding of a stator on "weight" (there is no closed chain between a winding of a stator and the core) (fig. 7.27).

If the chain is closed (resistance aspires to zero), replace a stator.

Fig. 7.28. Check of the closed chain between a conclusion of "positive" diodes of the vypryamitelny block and a conclusion of a winding of a stator

By means of an ohmmeter be convinced that the chain between a conclusion of "positive" diodes of the vypryamitelny block and a conclusion of a winding of a stator is closed (resistance a little). Change polarity of connection of samplers of an ohmmeter and measure resistance (if resistance a little, i.e. the chain is closed in both directions, the diode means it is punched) (fig. 7.28).

Replace the vypryamitelny block assembled.

Fig. 7.29. Check of the closed chain between a conclusion of "negative" diodes of the vypryamitelny block and a conclusion of a winding of a stator

By means of an ohmmeter be convinced that the chain between a conclusion of "negative" diodes of the vypryamitelny block and a conclusion of a winding of a stator is closed (resistance a little). Change polarity of connection of samplers of an ohmmeter and measure resistance (if resistance a little, i.e. the chain is closed in both directions, the diode means it is punched) (fig. 7.29).

Replace the vypryamitelny block assembled.

Fig. 7.30. Check of diodes of a stator

Check three diodes, connecting an ohmmeter to both conclusions of each diode. For each diode the chain should be closed only in one direction (fig. 7.30).

In the absence of the closed chain in both directions (or in the presence of the closed chain in both directions) the diode is faulty and the vypryamitelny block (the heatdisseminating block) is subject to replacement.

Fig. 7.31. Restrictive line of wear of a brush

Replace brushes if their wear reached the restrictive line (fig. 7.31).

Fig. 7.32. Places of the soldering of wires

Otpayayte a brush wire also take a generator brush with a spring (fig. 7.32).

Establish a spring and a new brush in a shchetkoderzhatel.

Fig. 7.33. Scheme of installation of a brush

Insert a brush so that between edge of a shchetkoderzhatel and the restrictive line on a brush made distance of 2-3 mm (fig. 7.33).

Solder a brush wire to a shchetkoderzhatel

Unscrew a conclusion nut "In" the generator and remove a back cover.

Fig. 7.34. Places of the soldering of wires of a winding of a stator

Before stator removal отпаяйте four wires of a winding of a stator from the main diodes of the vypryamitelny block (fig. 7.34).

ATTENTION At a soldering / raspayka of contacts be careful, that heat from a soldering iron influenced diodes as little as possible. Make these operations as soon as possible. Be careful not to put excessive efforts to contacts of diodes.

Remove a stator assembled from a back arm of the generator.

Remove a shchetkoderzhatel and the vypryamitelny block.

Unscrew four coupling bolts.

Fig. 7.35. Removal forward кронштейга generator

Insert a flat screw-driver between a forward arm of the generator and a stator and, operating with a screw-driver as the lever, separate (down) a forward arm of the generator (fig. 7.35).

ATTENTION Do not insert a screw-driver too deeply not to damage a stator winding. It can appear that will remove a back arm of the generator difficultly as stirs the lock ring used for fixing of the back bearing. For simplification of removal of a back arm warm up bearing knot by means of a soldering iron in capacity of 200 W. Do not apply to heating the thermal gun as damage of vypryamitelny diodes in this case is possible.

Fix a rotor in a vice so that the party with a pulley was above.

ATTENTION Watch that sponges of a vice did not damage a rotor.

Fig. 7.36. Removal of a pulley of the generator

Unscrew a nut of fastening of a pulley, remove a spring washer, then a pulley and a pro-rate (fig. 7.36).

Remove a forward arm of the generator and sealing rings.

Take a rotor from a vice.

Fig. 7.37. Places of the soldering of contacts to the vypryamitelny block

Before a detachment of the vypryamitelny block from a shchetkoderzhatel отпаяйте two contacts (plate) soldered to the vypryamitelny block (fig. 7.37).

Fig. 7.38. Chain check between contact rings

Check absence of break in a rotor winding. Check existence of the closed chain between contact rings (fig. 7.38).

If resistance too little (aspires to 0), it testifies to existence of short circuit. In case of break in a chain of a winding of a rotor or existence of short circuit replace a rotor assembled.

Resistance: about 3,1 Ohm.

Check absence of short circuit of a winding of a rotor on "weight".

Fig. 7.39. Check of lack of a chain between a contact ring and the core

Check lack of the closed chain between a contact ring and the core (fig. 7.39).

In case of existence of the closed chain (short circuit with "weight") replace a rotor assembled.

Fig. 7.40. Check of the closed chain between conclusions of a winding of a stator

Check absence of break in a stator winding. Check existence of the closed chain between conclusions of a winding of a stator (fig. 7.40).

If the chain of a winding is opened (resistance aspires to infinity), replace a stator assembled.

Fig. 7.41. Check of absence of short circuit of a winding of a stator on "weight"

Check absence of short circuit of a winding of a stator on "weight" (there is no closed chain between a winding of a stator and the core) (fig. 7.41).

If the chain is closed (resistance aspires to zero), replace a stator assembled.

Fig. 7.42. Check of the closed chain between a conclusion of "positive" diodes of the vypryamitelny block and a conclusion of a winding of a stator

By means of an ohmmeter be convinced that the chain between a conclusion of "positive" diodes of the vypryamitelny block and a conclusion of a winding of a stator is closed (resistance a little) (fig. 7.42).

Change polarity of connection of samplers of an ohmmeter and measure resistance (if resistance a little, i.e. the chain is closed in both directions, the diode is punched). Replace the vypryamitelny block assembled.

Fig. 7.43. Check of a negative conclusion of the vypryamitelny block

By means of an ohmmeter be convinced that the chain between a conclusion of "negative" diodes of the vypryamitelny block and a conclusion of a winding of a stator is closed (resistance a little) (fig. 7.43).

Change polarity of connection of samplers of an ohmmeter and measure resistance (if resistance a little, i.e. the chain is closed in both directions, the diode is punched). Replace the vypryamitelny block assembled.

Fig. 7.44. Check of three diodes of the vypryamitelny block

Check three diodes, connecting an ohmmeter to both conclusions of each diode. For each diode the chain should be closed only in one direction (fig. 7.44).

In the absence of the closed chain in both directions (or in the presence of the closed chain in both directions) the diode is faulty and the vypryamitelny block (the heatdisseminating block) is subject to replacement.

Assembly is carried out as it should be, the return to dismantling. Pay attention to the following:

Fig. 7.45. Fixing of the lifted brushes

before rotor installation in a back arm, insert a thin wire into a small opening in an arm to fix the lifted brushes (fig. 7.45). A wire take out after rotor installation.

Establish the generator on a place and insert a bolt of sharnirny fastening (do not tighten a nut of a bolt of sharnirny fastening).

Fig. 7.46. Generator installation

Push the generator forward and define, how many pro-rates (0,198 mm everyone by thickness) are necessary to insert between a forward rack of the generator and a forward cover of the engine (a gap "And" in drawing 7.46).

Pick up such quantity of pro-rates that they did not fall in attempt to insert them in a gap.

Fig. 7.47. Vetilyatsionnoye an opening in a cover of the storage battery

Insert pro-rates (into a gap "And" in drawing 7.47), connect and tighten a nut of a bolt of sharnirny fastening for completion of installation.