CYLINDER HEAD — Inspection (Cont'd) — Valve Dimensions, Spring, Lifter (Supplement-V)
EM-5024prose procedureInspection (Cont'd)
Valve dimensions
- 1Check dimensions of each valve. For dimensions, refer to SDS (EM-5047).
SEM188A - 2Correct or replace any valve that is faulty.
- 3Valve face or valve stem end surface should be refaced by using a valve grinder.
EM111 - 4Measure distance from cylinder head surface to intake and exhaust valves. If specified distance is exceeded, replace valve(s) or valve seat(s).Specified distance — Standard: Intake 0.85 - 1.19 mm (0.033 - 0.047 in); Exhaust 1.05 - 1.39 mm (0.041 - 0.055 in).
SEM787F
VALVE SPRING PRESSURE LOAD
NOTE
Measure the tension of each spring. If the measured value exceeds the specified value, replace spring. Refer to SDS (EM-5047).
VALVE LIFTER
Valve lifter inspection
- 1Check contact and sliding surfaces for wear or scratches.
SEM160D
| Specification | Value |
|---|---|
| Valve recess from head surface — Intake (standard)Measured to valve head crown | 0.85 - 1.19 (0.033 - 0.047)mm (in) |
| Valve recess from head surface — Exhaust (standard)Measured to valve head crown | 1.05 - 1.39 (0.041 - 0.055)mm (in) |
Valve recess from head surface — Intake (standard)Measured to valve head crown
0.85 - 1.19 (0.033 - 0.047)mm (in)
Valve recess from head surface — Exhaust (standard)Measured to valve head crown
1.05 - 1.39 (0.041 - 0.055)mm (in)