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KD 702_1003_1404 Workshop Manual_cod. ED0053029340_1° ed_
6
103
Piston, disassembly and inspection
Remove the stop rings and remove the pin, see g. 101.
Remove the piston rings and clean the slot.
Measure diameter Q at height A from the base of skirt (A = 9
mm).
If the diameter is worn more than the 0.05 mm minimum given
value, replace piston and rings.
Note: The provided oversize elements are of 0.50 mm and 1.00
mm
Piston, class
The pistons are subdivided according to their diameters into categories: A, B, C. These references, are shown on the top of
the piston (see g. 100).
Piston supply:
Pistons at the nominal diameter are only supplied in category A.
Pistons oversized by 0.50 and 1.00 mm are supplied with reference to the increased level on the piston crown:
Ø 75.5 – 76.0 for KDW 702-1003-1404 engines.
Disassembly / Reassembly
Class Ø Cylinder - mm Ø Piston - mm Clearance - mm
KDW 702-1003-1404
A 74,990÷75,000 74,930÷74,940 0,050÷0,070
B 75,000÷75,010 74,940÷74,950
C 75,010÷75,020 74,950÷74,960
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