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C.

ASSEMBLY AND REPAIR INSTRUCTIONS

FOR CHASSIS

1.

Disassembly of Forks

1.1

Remove front wheel

1.2

Remove handlebars and bar clamps

1.3

Loosen both top 10 mm pinch bolts and remove both fork caps.

1.4

Loosen both bottom pinch bolts and pull both fork tubes out of triple clamps.

1.5

Drain fork oil

1.6

Unscrew bottom fork caps and remove snap rings. Then pull complete dampening units out of the

tubes.

1.7 Pull sliders from fork tubes.

2.

Assembly of forks

2.1

The following items must be checked:
The hard chromed surface of the fork tubes, as well as the straightness. The inside surface of the
fork sliders must be without ridges or scratches. The seals must be checked for leakage. Pistons,

valves must be checked for leakage.

2.2

Slide the slider onto the fork tube.

2.3

The complete dampening unit is inserted in the bottom of the fork tube. The snap ring is re-Iocated
and the bottom cap threads are oiled and re-tightened with a 27 mm wrench.

2.4

The fork spring is well greased and installed on the fork tube. The rubber fork boots are mounted
over the spring.

2.5

The individual fork tubes are inserted in the triple clamps and the bottom pinch bolts are tightened.

2.6

The top plugs are mounted (making sure the air release valves are functioning properly) and the top
pinch bolts are tightened.

2.7

Handlebars and front wheel are mounted.

3.

Swing-Arm - Rear suspension disassembly

3.1

The rear wheel is removed by removing brake rod, chain, and chain guide. The rear axle nut is re-

moved (SW 24mml and then the axle is pulled out

32

The shocks are removed (SW 13mm)

3.3

The swing arm pivot axle nut is removed with SW 19 mm socket

Assembly

3.4

The shocks are tested under use It is important to have the shock damping adjusted the same.

(Adjustment, see Section IV - 9).

3.5

The swing arm should be checked for straightness and if need be, the swing arm bushings should
be replaced.

3.6

In mounting shocks, caution must be taken not to have any side pressure on them.

4.

Disassembly and re-assembly of front wheel

4.1

Remove front brake cable

4.2

Remove 8 mm (SW 13) bolt from brake anchor rod.

4.3

Loosen both 8 mm (SW 13) pinch nuts on the fork sliders.

4.4

Unscrew axle nut (SW 22)and pull axle by inserting a rod or screwdriver in the hole provided in the

axle.

4.5

The assembly is performed in reverse order.

5.

Disassembly and re-assembly of rear wheel

5.1

Remove the master link from chain.

5.2

Remove brake rod.

5.3

Remove chain guide (SW 13) from backing plate.

5.4

Remove rear axle nut with 24 mm wrench. Then pull rear axle

5.5

Remove rear wheel along with brake backing plate.

5.6

The assembly of the rear wheel is performed in reverse order.

Содержание MC 250

Страница 1: ......

Страница 2: ...AfAICO MC250 MC400 MC440 MC501 Instruction book Service manual From January 1974...

Страница 3: ...w Clutch Disassembled 8 g Transmission with Bearings Disassembled 9 10 Carburetor Air Cleaner Boot Air Cleaner Assy 9 11 Frame Bare 10 12 Telescopie Forks Photograph Exploded Drawing 10 13 Front Wheel...

Страница 4: ...nce 501 CCM 1 91 6 mm 76 mm 501 ccm 12 1 51 6900 RPM Bing Type V 54 38mm 185 285 40 As Required 440 CCM 400 CCM 250 CCM Air cooled Piston Port 2 Stroke Engine 1 1 1 67 mm 77 mm 82 mm 70 mm 83 mm 83 mm...

Страница 5: ...ake Trial Ground Clearance Front Suspension Rear Suspension WHEELS Front Rear TIRES Front Rear Tire Pressure Front Brake Rear Brake Fuel Tank Petcocks Air Filter MC 199 152 123 10 1 Liter gear oil 1 q...

Страница 6: ...35 53 15 D 20...

Страница 7: ...o 83 00 400 CC 7695 77 10 77 25 t078 00 250 CC 66 95 67 10 67 25 to 68 00 The MAHLE piston is forged of a special piston alloy containing a large amount of silicon With L shaped piston ring in the 250...

Страница 8: ...which is built in three different models The MC 250 has a clutch which is used in conjunction with the double row prima ry chain It has six toothed outer clutch plates which are 99 mm in diameter and...

Страница 9: ...of the highest qual ity steel 9 Transmission with Bearings Disassembled 10 CARBURETOR AIR CLEANER The carburetor is a concentric type V 54 36 iZ or 38 iZ mm On the 501 wh ich is attached to the cylin...

Страница 10: ...or Koni springs and shocks are available The shocks dampening characteristics are especially developed for Maico 4 SEAT The seat is a one man seat specially fitted and developed after years of moto cr...

Страница 11: ...kes M 4 x 243 mm 18 spokes M 4 x 230 mm On the small end of the hub is a reinforcing ring made of aluminium alloy for strength 13 Frant Wheel 10 REAR WHEEL This rim is also available in chromed steel...

Страница 12: ...hen the proper amount of advance is found and the igni tion points break the circuit at the previously mentioned settings then the screws holding the stator plate in position should be re tightened ev...

Страница 13: ...ion A softened head gasket should be installed and the cylinder head bolts tightened to 18 foot pounds 6 CRANK SHAFT While the cylinder is not on the crankcases the play in the lower connecting rod be...

Страница 14: ...ssary Also a warped or bent swing arm should be replaced Mounting of Koni shock absorbers 1 The retainin9 clips and springs on original shocks must be removed 2 The bottom spring retainer is put on it...

Страница 15: ...elease it from the adjustment mecha nism 6 The shock can then be re assembled in reverse order Be sure to re install the rubber bumper Failing to do so can seriously damage the shock under use Pay spe...

Страница 16: ...y tapping the pin lightly Use caution not to apply any pres sure to the side of the connecting rod 2 4 Lay engine on primary case side and remove timing cover 2 5 Remove stator by loosening and removi...

Страница 17: ...n gear shaft 2 11 Removal of transmission The shift fork shaft is pulled out then the main shaft with slider gears and eventually the lay shaft The spacer ring and three needle bearings are then lifte...

Страница 18: ...he main drive sprocket and the primary chain Be careful not to forget the washer between mainshaft bearing and the clutch housing and body Check to see if plates are warped or the teeth on the plates...

Страница 19: ...ir releasevalves are functioning properly and the top pinch bolts are tightened 2 7 Handlebars and front wheel are mounted 3 Swing Arm Rear suspension disassembly 3 1 The rear wheel is removed by remo...

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