41.
Knock new screws in place and press a new bush in the 43. Fit the piston rings with the help of piston ring pliers.
connecting rod. Ensure that the lubricating hole 1 in the bush Start with the oil scraper ring in the lowest groove. The oil
aligns with the hole in the connecting rod. Ream or diamond scraper ring can be fitted either way. Continue with the
drill the bush to an accurate free fit. Check that the gudgeon compression ring which is marked “TOP” on one side. This
pin slides through the bush due to its own weight. (See also marking shall face upwards when fitted. The piston ring with
the technical data.) Fit one of the circlips and oil the gudgeon the chromium insert is fitted last and can be fitted either way.
pin
and
connecting
rod
bush.
Heat
the
piston
to
approximately 70 C (1580F) and assemble the piston and
the connecting rod according to the marking. Note! The
gudgeon pin must be able to be pressed in easily. Fit the
other circlip.
0
Cylinder head
4
2. Control the dimensions of the piston with a micrometer. 44. Remove the collets, the collars and the valve springs
Measure at right angles to the gudgeon pin holes at the with the help of a valve spring compressor. Remove the
valves. Remove the valve seal from the inlet valve. Burnt
piston’s lower edge. Afterwards check the new rings’ play in
valves are discarded if worn too much and damaged seats
the piston ring grooves. (See technical data.)
are to ne machined when necessary. (See technical data.)
The valves and valve seats are to be ground together so that
the mating surfaces provide a complete seal.
13
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD5A |
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| Copyright | Attribution Non-commercial |
(1 votes, average: 5 out of 5)
Marine readers have rated Volvo Penta MD5A Marine Diesel Engine Workshop Manual 5.0 out of 5.0 based on 1 product reviews. Very useful download. Thanks VM.