Toyota Land Cruiser 1988 Repair Manual page 48

ENGINE MECHANICAL- Cylinder Head EM-17
EM4339
o
OQ
on
OCJ
cc
cc
o
EM433B
l
EM1514
EM1370
INSPECTION, CLEANING AND REPAIR OF
CYLINDER HEAD COMPONENTS
1.
2.
3.
CLEAN TOP OF PISTONS AND TOP OF BLOCK
(a) Turn the crankshaft and bring each piston to top
dead center. Using a gasket scraper, remove all the
carbon from the piston top.
(b) Remove all the gasket material from the top of the
block.
(c) Blow carbon and oil from the bolt holes.
WARNING: Protect your eyes when using high
pressure air.
REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material
from the manifold and head surface.
CAUTION: Be careful not to scratch the sur-
faces.
CLEAN COMBUSTION CHAMBERS
Using a wire brush, remove all the carbon from the com-
bustion chambers.
CAUTION: Be careful not to scratch the head
gasket contact surface.
4. CLEAN VALVE GUIDE BUSHINGS
Using a valve guide bushing brush and solvent clean all
the guide bushings.
5. CLEAN CYLINDER HEAD
Using a soft brush and solvent thoroughly clean the
head.