Page 30
Notice G05 - 3 590 503
Issue: 11/2011 - Rev.A
ERVOR (SCA) - 6, Rue Désiré Granet - Z.I. du Val d'Argent - 95100 ARGENTEUIL FRANCE
(33) 01 34 11 50 00
(33) 01 34 11 50 10
Web : www.ervor.com - Email : [email protected]
11 - B - 2 - MAINTENANCE OF VALVES
DISMOUNTING OF VALVES
- Disconnect outlet pipes and cooling coil fittings
(all pipe fittings are olive type)
- Disassemble cylinder heads and valves
- Make sure
a) that there is no foreign matters between the valve and the seat
b) that bearings are in good condition
c) that there are no broken springs
LAPPING OF VALVES
- Cylinder head bearings are steel on steel
- Use fine quality oil grinding paste
- Normally lap the valve on the cylinder head
- After lapping clean the whole set : cylinder head / valve, with a good
solvent, dry the set
properly with compressed air.
BE CAREFUL NEVER TO CLEAN THE VALVES WITH
INFLAMMABLE LIQUIDS
(E.G. GASOLINE OR PETROLEUM)
REMOUNTING OF VALVES
- Remount valve on the cylinder head according to the figures on the previous page.
- Do not forget the safety washer and pin which prevent the slackening of the valve stem,
nut.
!
