with a screw driver. The puller is then remo-
ved and the clutch plates and springs are lif.
ted out. On the small clutch the clutch nut
retainer is also lifted out. The clutch body
is held stationary with a special tool (avai-
lable through the dealer I while the nut is
loosened and removed. The clutch body,
clutch housing, primary chain, and kickstar.
ter shaft can now be removed.
25. Holding The Clutchbody
With
Special Holding Tool
2.9
Removal of the drive sprocket on the
crank shaft - The crank shaft must be
held stationary by the same means as
mentioned before for removal of rotor
magnet.
26. Removing the sprocket on the crankshaft
2.10 Splitting the crank cases - The pull spring of the hook ratchet is removed with pliers after the pull
rod retainer, pull rod, and the eight 6 mm case screws are removed. Light pressure is applied to the
crank shaft journal and main 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 lifted out of the
hole in the final drive gear. The 32 mm nut on the outside of the primary sprocket is removed by
blocking the primary sprocket. The primary sprocket and primary drive gear are then removed by
tapping lightly on it.
2.12 The shift cam and pawl can now be removed.
2.13 The crank shaft can be Iifted out of the right side.
2.14 Removing the bearings requires heating the cases to 120°C (240°FI and a press.
3,
Assembly of the engine - Shimming of individual parts
3.1 The installation
of the bearings is done by heating the cases to 120°C and a press. Seals must be
coated with locktite on the outer surface and smeared with a grease on the inner surface. Then they
are also installed with a press.
3.2
The right case half is set on the mounting stand.
3.3 The crank shaft is inserted in the right case half.
3.4 The shift cam and pawl with springs are inserted.
with a screw driver. The puller is then remo-
ved and the clutch plates and springs are lif.
ted out. On the small clutch the clutch nut
retainer is also lifted out. The clutch body
is held stationary with a special tool (avai-
lable through the dealer I while the nut is
loosened and removed. The clutch body,
clutch housing, primary chain, and kickstar.
ter shaft can now be removed.
25. Holding The Clutchbody
With
Special Holding Tool
2.9
Removal of the drive sprocket on the
crank shaft - The crank shaft must be
held stationary by the same means as
mentioned before for removal of rotor
magnet.
26. Removing the sprocket on the crankshaft
2.10 Splitting the crank cases - The pull spring of the hook ratchet is removed with pliers after the pull
rod retainer, pull rod, and the eight 6 mm case screws are removed. Light pressure is applied to the
crank shaft journal and main 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 lifted out of the
hole in the final drive gear. The 32 mm nut on the outside of the primary sprocket is removed by
blocking the primary sprocket. The primary sprocket and primary drive gear are then removed by
tapping lightly on it.
2.12 The shift cam and pawl can now be removed.
2.13 The crank shaft can be Iifted out of the right side.
2.14 Removing the bearings requires heating the cases to 120°C (240°FI and a press.
3,
Assembly of the engine - Shimming of individual parts
3.1 The installation
of the bearings is done by heating the cases to 120°C and a press. Seals must be
coated with locktite on the outer surface and smeared with a grease on the inner surface. Then they
are also installed with a press.
3.2
The right case half is set on the mounting stand.
3.3 The crank shaft is inserted in the right case half.
3.4 The shift cam and pawl with springs are inserted.
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of [email protected]
