Engine Block Assembly - Kohler KDI 2504TM Workshop Manual

9
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• The operator must:
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9.3 Engine block assembly

9.3.1 Crankshaft bushings
Important
•
Execute the procedure in
proceeding with assembly.
•
The crankshaft half-bearings are made of special
material. Therefore, they must be replaced every time
they are assembled to prevent seizures.
1. Fit the new half-bearings B onto the crankcase upper
half E adhering to the reference notches C.
Important
•
After the half-bearings are fitted, check that the
lubrication holes D correspond with the crankcase
grooves E.
•
The lower and upper half bearings CANNOT be
singularly replaced, and both halves must be replaced
together.
2. Fit the new half-bearings A onto the lower crankcase F
using the reference notches G.
3. Lubricate the half-bearings A and B with oil.
9.3.2 Tappets
1. Lubricate the tappets G with oil.
2. Insert the tappets G into the housings H of the upper
crankcase.
EN 114
ASSEMBLY INFORMATION
the components, the assemblies, the coupling surfaces of the parts are washed, clean and
thoroughly dried;
the coupling surfaces are undamaged;
the equipment and tools are ready so that all work can be carried out correctly and safely;
ensure that the working environment is safe.
carry out the procedures smoothly and safely. It is thus recommended to install the engine
on a special rotating stand used when servicing engines to ensure the safety of the
operator and the other individuals involved;
tighten the assemblies and / or components in a criss-cross or alternating pattern, initially
with a value lower than that preset, and then subsequently, with the tightening torque
specified in the procedure;
replace all seal gaskets after each assembly for all components on which they are provided.
Par. 8.2.1 and 8.2.2, before
Fig 9.1
Fig 9.2