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5
Overhauls and checking
C
1
62
63
64
65
- 36 -
Valve seats - Reassembly
Caution – Warning
Thoroughly wash the cylinder head and the valve seats before
reassembly.
Place valve seat 1 onto its seat.
Place the driving tool for valve seat C on the valve seat.
Drive the seat in by hammering on tool C until the seat is inserted in
its housing to its limit stop.
Repeat these operations for valve seat 2 using the tool B.
Valve seat lapping
After cutting valve seats, lap valve seats with fine lapping compound.
D
wear limit
Valves - Oil seal in valve guide
To prevent seal 2 from being deformed when the valve guide is
mounted, fit it into tool 1 p/n° 1460-047 after having thoroughly lubri-
cated it.
Firmly press to insert the oil seal in the seat on the valve guide to its
limit stop.
Valves - Reassembly
Components:
1 Valve stem
2 Oil seal
3 Spring washer/set
4 Spring
5 Cap
6 Half collets
Caution – Warning
To reassembly half collets place a suitable plate under the valve
head and press down firmly as indicated in the figure.
Check that the half collets are correctly attached to the valve.
Workshop Manual KD 441_cod. 1.5302.865_2
0.35÷0.65
1.5
nd
ed_ rev. 01.
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