Valve And Valve Spring Installation - Benelli TRK 502 Service Station Manual

Install the head:
NOTE:________________________________
Lubricate the valve stem and oil seal.
Engine oil
• Valve bottom spring plate (4),
• valve oil seal (3) Fig. A1 see section entitled "Valve oil seal
installation/removal".
• valve (5)
• valve spring (2)
• Valve top spring plate (1),
• cotters.
NOTE:________________________________
Deburr the end of the valve stem with an oiling stone (A2).
NOTE:________________________________
Make sure that every valve has been reinstalled in its origi-
nal position.
NOTE:________________________________
Reinstall the valve cotter pin, pressing the spring on each
valve with the special compression tool (*) Fig. B
(*) Valve spring compressor tool
Code: 0320097050000
Secure:
• the cotters on the valve stems.
Gently tap on the valve tip with a soft hammer, Fig. C.
IMPORTANT NOTICE
Hitting the valve tip with too much force could damage the
valve.
Install:
• the calibrated pad (1)
• the tappet valve (2)
NOTE:________________________________
Lubricate the tappet valve with copper grease (MOLYKOTE
HSC PLUS).
Manually turn the tappet valve, which must be able to slide
smoothly.
Reinstall each tappet valve and pad to its original position.
G
Copper grease
The following process applies to all of the valves and relevant
components.
5 - 30
HEAD DISTRIBUTION

VALVE AND VALVE SPRING INSTALLATION

1
2
3
4
5
*
2
A
A1
A2
A3
B
C
D
1