Crankshaft Preparation; Upper Crankcase Preparation - Kohler KD 477-2 Workshop Manual

53
54
55
56
KD 477-2 Workshop Manual_cod. ED0053029370_1° ed_ rev. 00

Crankshaft preparation

The insertion of the main distribution gear onto the crankshaft must
be carried out while hot. Heat by means of dry heating or an oil bath
at 70/80 °C (fig. 53).

Upper crankcase preparation

1. Insert accelerator internal lever onto crankcase taking care not to
damage the oil seal O-Ring.
2. Fit interchangeable tappets into housings on crankcase.
3. Camshaft assembly (fig. 54): in order to assemble the shaft cor-
rectly, the cams must be introduced, without applying force, along
the grooves inside the crankcase.
4. Mount governor lever and insert lever fulcrum pin taking care not
to damage the oil seal rings (fig. 55). The lever should be able to
effect the complete stroke without strain.
Insert spring between governor lever and accelerator.
5. Insert main bearings into respective housings and spread with oil
slightly.
The three main bearings are identical and interchangeable.
6. Fit rubber gaskets and O-Rings between crankcases taking care
to insert same properly into respective grooves so as to prevent
oil leaks between the contact surfaces (fig. 56).
It is advisable to spread a bit of rubber adhesive round the
edges of the rubber gasket for better seal.
ENGINE ASSEMBLY
XIII
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