Komatsu PC88MR-10 Shop Manual page 1060

50 Disassembly and assembly
Engine and cooling system
54.Remove crosshead (82).
a Note the mounting position and the shapes
of holes (a) and (b).
(For reinstallation in the same direction)
55.Remove mounting bolts (83) (4 pieces), and
remove injector holders (84) (4 pieces).
a Use the new bolts (83) (4 pieces).
a Do not reuse the bolt and replace it with a
new one. If it is reused, the engine oil may
enter the fuel return circuit.
56.Remove injector assemblies (85) (4 pieces).
a Record the cylinder number to which the
injector is installed and the character string
(M) listed on the QR code tab (Q) as a set,
and remove the injector.
50-32
a Read character string (M) in the order
indicated by the arrow in the figure.
a Check that the noted character string (M) is
correct.
a Do not remove QR code tab (Q) attached to
the injector head.
a Do not damage QR code tab (Q) attached to
the injector head.
(Reference: The QR code or character string
indicates the compensation value for fuel
injection of the injector, which is specific to
each injector.)
57.Remove mounting bolt (86), sling cylinder head
assembly (87) and remove it.
Cylinder head assembly (87):
60 kg
PC88MR-10