Cylinder Head and Valves
02
020
12
RG,RG34710,65 –19–13AUG99–1/5
Remove Cylinder Head
RG8187A –UN–05DEC97
Removing Turbocharger and Exhaust Manifold
A—Turbocharger
B—Exhaust Manifold
C—Thermostat Housing/Water Manifold
On some applications, it may be necessary to remove
engine from machine to service cylinder head. Refer to
your Machine Technical Manual for engine removal
procedure.
CAUTION: After operating engine, allow exhaust
system to cool before servicing engine.
DO NOT drain coolant until the coolant is below
operating temperature. Only remove radiator
filler cap when cool enough to touch with bare
hands. Slowly loosen cap to first stop to relieve
pressure before removing completely.
1. Drain all oil and coolant.
2. Remove intake manifold (6105H and 6125H engines).
(See REMOVE, INSPECT AND INSTALL INTAKE
MANIFOLD in Group 080.)
3. Remove turbocharger (A). (See REMOVE
TURBOCHARGER in Group 080.)
4. Remove exhaust manifold (B). (See REMOVE,
INSPECT AND INSTALL EXHAUST MANIFOLD in
Group 080.)
5. On 6105A and 6125A engines, remove aftercooler
assembly. (See REMOVE AND INSTALL
AFTERCOOLER ASSEMBLY in Group 080.)
6. Remove thermostat housing/water manifold (C). (See
REMOVE AND INSTALL THERMOSTAT HOUSING in
Group 070.)
7. Remove rocker arm assembly. (See REMOVE AND
INSTALL ROCKER ARM ASSEMBLY, earlier in this
group).
8. Remove electronic unit injectors and wiring harness.
Refer to the appropriate fuel system repair manual.
Delphi/Lucas ECU controlled fuel systems:
CTM100 (06APR04)
02-020-12
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=84
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