The adaptation for dismantle of bearings is represented in figure 13. Him(it) use as follows: from the bearing delete a separator, move apart balls, enter between holders bearings tips, turn on 90 degrees and in such position законтривают nuts. The screw press the bearing from a pin of a cranked shaft. On it disassembly comes to an end.
However is preliminary recommended to reduce a tightness in landing(planting) bearings, having ground in pins of a cranked shaft and landing(planting). For this purpose use притиры, represented on figure 14. (Before final assembly of the engine do not overlook to wash out carefully all details in kerosene.)
The first stage of assembly - installation in картер radical bearings. Half картера heat up on an electric bar or in an air oven to 70-80 degrees. A degree of heating define(determine) a touch to a detail the match head. The combustible structure should leave a trace, but not be ignited.
The bearing запрессовывают in the heated up half картера with the help оправки, represented in figure 15. Similarly establish the bearing and in other half картера. As pins of a cranked shaft притерты, his(its) installation does not demand special adaptations. Between half картера put a factory lining, коленвал insert into bearings, screw up all screws which are pulling together half картера. Final landing(planting) of pins of a cranked shaft in radical bearings is carried out by a gradual tightening of these screws.
To tighten(delay) screws картера it is necessary in the certain sequence and gradually. The order of an inhaling(a prolongation) is shown in figure 16. Under screws it is necessary to put spring washers.
Further collect coupling. Establish the bearing of the platen of coupling and his(its) sealing ring in the right half картера. At запрессовке the bearing use оправку, represented on figure 15. Insert the platen of coupling in gathering with a spring, persistent nuts and a rod, запрессовывают the left bearing, using a universal stripper and оправку (fig. 17). Put the left sealing ring.
Now the piston is put.
For this purpose it(him) heat up to 70-80 degrees (the control of temperature as it mentioned above), then by means of the adaptation represented in figure 8, запрессовывают a piston finger (см.рис 9), but without оправки. Greased with oil, it(he) should enter into an aperture of the head of a rod from small pressing a hand. A backlash between a finger and lugs of the piston up to 0,005 mm.
The cylinder establish, having put under him(it) a factory lining. Nuts of fastening of the cylinder tighten(delay) on a diagonal. With the help щупа check a backlash between the piston and a sleeve. It(he) is equal 0,05 - 0,07 mm. The bottom edges of blowing-off windows of a sleeve should coincide with the top side of the piston in position НМТ. It achieve installation of linings under the cylinder of various thickness. (At manufacturing linings is recommended to use отожженную red copper or sheet aluminium.) Check absence of a skew of the piston. At measurement of a backlash at the left and to the right of a piston finger щуп should enter between a sleeve and the piston with identical effort. In case of a skew it is necessary to remove(take off) the cylinder and, having established a rod on two support from strong grades of a tree, easy impacts of a hammer from soft metal отрихтовать it(him). Skews reduce capacity of the engine and cause premature deterioration of details.
The further assembly is in detail stated in the factory instruction.
On the motor altered thus we recommend to establish the carburettor with central поплавковой the chamber from boat motor \" Salute \" or from bicycle motor MAW (manufacture of GDR) with a diameter диффузора 11мм. The drawing of an inlet branch pipe for carburettor MAW is resulted in figure 18. It is useful to modernize also the carburettor, having increased diameter of an aperture up to 0,9мм and having established a needle of adjustment of quality mixes (fig. 19). The muffler use from a motorcycle \"Java - 05\".
The altered engine has a degree of compression 12-13. The moped with full loading (a body weight 45кг, the driver 85кг, luggage 15кг, 145кг
develops all on horizontal sites of highway speed of 55-60 km/h (with a conducted asterisk 46 зубьев, the total transfer attitude(relation) 19, 31:1), that corresponds(meets) 8500 - 9000 rev/min. The machine easily overcomes rises and freely tows the trailer in weight about(near) 100кг.
The forced motor demands some other adjustments in comparison with specified in the factory instruction. At a degree of compression 12,5 - 13 advancing of ignition it is necessary to establish 1,2 - 1,6 mm up to ВМТ and to apply cold enough candles, for example And 6,5 MOUSTACHE. As fuel use gasoline АИ-93, А-95 in a mix with aviation oils МС-20 or МК-22 in the ratio 20:1.
In the conclusion we should warn, that speeding up of motors of a series \"Д\" in the above described way reduces motor potential, demands often adjustments of ignition as details of the factory breaker do not maintain long work at 7000 - 8000 rev/min. To start works on speeding up of motors it is possible, only having sufficient experience in their operation and having made the complete set of the special tool about which it was spoken in our clause(article) for disassembly of the engine by means of a hammer lead to to rather sad consequences.