Komatsu PC88MR-10 Shop Manual page 1050

50 Disassembly and assembly
Engine and cooling system
20.Remove mounting bolts (20) (3 pieces) and
remove cylinder head cover (21).
21.Remove nuts (23) (8 pieces) of injector harness
(22) from the injector.
a Installing position of injector wiring harness
Color of injector wiring
harness
White
Black
22.Remove mounting bolts (24) (4 pieces), and
remove injector holders (25) (4 pieces).
a Use the new bolts (24) (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.
23.Remove injector assemblies (26) (4 pieces).
50-22
Cylinder No.
1, 3
2, 4
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.
a Read character string (M) in the order
indicated by the arrow in the figure.
a Check the noted character string (M) is
correct.
a Do not remove QR code tab (Q) attached to
the injector head.
a Do not damage the QR code tab (Q) on 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.)
PC88MR-10