Valve Face And Seat - Linhai M565Li T3 EFI Service Manual

CHAPTER 3 ENGINE
Valve Seat
1.
Exhaust Valve Contaminated
2.

Valve Face and Seat

●
Check valve face and seat for burning or
pitting and replace valve or cylinder head
if there are signs of damage.
●
Ensure to seat valves properly. Apply
some lapping compound to valve face and
work valve on its seat with a lapping tool
(see Valve Guide Procedure below).
●
Measure valve face contact width.
NOTE: The location of contact area
should be in center of valve seat.
●
Measure valve seat width using a caliper.
Valve Seat Contact Width
Exhaust Valve
NEW
Service limit
Intake Valve
New
Service limit
1.20mm ～ 1.40 mm
1.80 mm
1.10mm ～ 1.30 mm
1.70 mm
M565Li T3 EFI SERVICE MANUAL 20.0
Area 3.Valve Face(Contact Surface to
Valve Seat)
If valve seat contact width is too wide or has
dark spots, replace the cylinder head.
CHAPTER 3 ENGINE PAGE. 3- 48