Lombardini LDW 502, Service Manual

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service manual
mod. 051135
6
a Ø 0 6 0 , 7 3 ÷ 5 3 0 , 7 3
= b Ø - a Ø
5 8 0 , 0 ÷ 5 3 0 , 0
0 7 1 . 0
b Ø 0 0 0 , 7 3 ÷ 5 7 9 , 6 3
E
8 - Insert a new pin (E) and drive it in 0÷1 mm
from the flat part of the support.
9 - Reassemble the rocker arm assembly in
the cylinder head (see “Assembling the
rocker arms”).
6.3.3 Checking and replacing the camshaft
In order to carry out a control of the camshaft,
it is necessary to disassemble it from the
cylinder head.
See “Disassembling the camshaft” for the
correct procedure.
1 - Using a dial indicator, measure the
diameters of the seats (X) and, with a
micrometer, find out the diameters of the
camshaft (øa-b) (see “Table of camshaft
dimensions”).
Table of camshaft dimensions
If the diameters do not correspond to the values
shown, replace the camshaft with an original
spare.
Dimensions
Clearance
(mm)
Tear & wear
limit (mm)
Ref.
OVERHAULS AND TUNING