Komatsu Utility PC12R-8 MISTRAL, Shop Manual

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TESTING AND ADJUSTMENTS CONTROL AND ADJUSTMENT OF THE INJECTION TIMING
1. Method "A" (Pump separated)
6 - Rotate the injection pump (5) towards the outside or
towards the motor, after having loosened the pump
(6) retaining nuts.
.
To DELAY the injection, rotate the pump (5) to-
wards the outside.
.
To BRING FORWARD the injection rotate the
pump (6) towards the cylinder block.
H Check the extent of the movement on the scale
(7).
7 - Lock the nuts (6) that fasten the pump to its block.
Pump fastening nuts: 25 ± 35 Nm
2. Method "B" (Pump in its block)
8 - Remove the injection pump (8) and change the shim
(9) provided underneath the pump.
.
To DELAY the injection, increase the shim thick-
ness.
.
To BRING FORWARD the injection, decrease the
shim thickness.
9 - Secure the pump (8) with the nuts (10).
Nuts: 50 ± 60 Nm
H After adjustment of the fuel injection timing:
10 - Connect the fuel delivery tubes (4) to the pump and
replace the clamp (3).
Delivery tube couplings: 33 ± 38.5 Nm
11 - Bleed any air from the fuel circuit.
PC12R-8 PC15R-8
RKPA0080
5
7
6
RKPA0090
9 10
8
4
3