DISASSEMBLY OF BASIC ENGINE
5-9
3.1 Removing tappet
Remove the tappet from the cylinder block using the push
rods.
Note: If the camshaft is removed before the tappet, the
tappet will fall in the oil pan.
Removing tappet
3.2 Removing gear pump housing
(1)
Remove the bolts and one stud (M8×1.25mm-15mm)
shown in the illustration from the gear pump housing.
(2) Screw a jack bolt into the stud threaded hole, and
remove the gear pump housing.
Removing gear pump housing
3.3 Removing crankshaft pulley
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The bar that stops the the crankshaft from turning may
come off. Pay due attention to safety.
(1) Screw two guide bolts into the threaded holes at the rear
end of the crankshaft. Stick a bar across the guide bolts
to prevent the crankshaft from turning.
(2) Remove the crankshaft pulley.
(3) Take out the woodruff key of the crankshaft.
Removing crankshaft pulley
3.4 Removing timing gear case
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The front plate is bolted to the crankcase from inside
the gear case. Do not attempt to remove the front plate
together with the gear case by tapping.
(1) Remove bolts from the timing gear case.
(2) Remove the timing gear case.
Note: Bolts have different lengths. Pay attention to the
positions of bolts to ensure correct reassembling.
Removing gear case
Tappet
Pushrod
Stud (M81.25 mm-15 mm)
Bolt
Gear pump
housing
Crankshaft pulley
Prevent the crankshaft
from rotating.
Bolt on rear
Bolt on front
Bolts on front: 8 pcs.
Bolts on rear: 4 pcs.