1989-Montero · engine 2'6 · страница 35 из 55 · Открыть оригинал PDF ↗
(4) Check valve seat insert sinkage. If the sinkage exceeds the
service limit, replace the insert with an oversize part as
described below.
(5) Measure the installed height of spring between the spring
seat and the retainer with the valve spring seat, spring re-
tainer and retainer lock installed. The amount of sinkage
can be judged from the measured value.
Installed height of spring A (both intake and exhaust)
Standard value : 40.4 mm (1.591 in.)
Limit : 41.4 mm (1.630 in.)
VALVE SEAT INSERT REPLACEMENT PRO-
CEDURES NWPIAE
Valve Seat Insert Oversizes
| Description | Size mm (in.) | Size mark | Insert height H mm (in.) | Cylinder head I.D. mm (in.) |
|---|---|---|---|---|
| Intake valve seat insert | 0.3(.012) OS. 0.6(.024) O.S. | 30 60 | 7.9-8.1 (.31 lo-.3189) 8.2-8.4 (.3228-.3307) | 47.30-47.33 (1.8622-1.8632) 47.60-47.63 (1.8740-I .8750) |
| Exhaust valve seat insert | 0.3 (.012) O.S. | 30 | 7.9-6.1 (.3110-.3189) | 40.3wo.33 (1.5866-l .5876) |
| 0.6 (.024) O.S. | 60 | 8.2-8.4 (.3228-.3307) | 40.60-40.63 (1.5984-l .59941 |
Таблица в оригинале
(3) Heat the cylinder head to about 250°C (480°F) and press in
an oversie seat insert fit to the insert bore in the cylinder
head at normal temperature.
(4) Treat the valve seat in the way shown in the diagram.
(5) Use the lapping compound, and lap the valve.
Оригинальная страница руководства
