FUEL
SYSTEM
NOZZLE
&
NOZZLE HOLDER
INJECTION PUMP
Nozzle
I
Valve opening pressure MPa (kgf/cm2) [psi]
Adjusting washer thickness
(For adjusting nozzle valve opening pressure) mm (in.)
Roller ring assembly
11.77
f
0.49 (120
f
5) [I706
f
711
0.900 to 1.950 (0.0354 to 0.0768)
(43 type every 0.025 mm (0.00098))
Roller ring height variation limit
--
mm (in.)
Drive shaft Wear depth limit of oil seal contact surface mm (in.)
Cam plate
Flyweight
Wear limit of plunger contact surface (dimension
L)
mm (in.)
Stepped wear limit of washer contact surface
(dimension A) mm (in.)
Plunger spring Squareness (dimension A) mm (in.)
Pump housing Bushing wear limit mm (in.)
Cam lift amount during injection timing check mm (in.)
INJECTION PUMP ADJUSTMENT
1.
Adjustment condition
Nozzle valve opening pressure
MPa (kgf/cm2) [psi]
1
14.71
f
0.49 (150
f
5) [2133 to 22041
I
Test oil
SAE J967 (IS0 41 13)
I
Feed oil pressure
kPa (kgf/cm2) [psi]
I
High pressure pipe (Inside diameter
x
outside
diameter
x
length) mm (in.)
1
02
x
06
x
840 (00.079
x
00.236
x
033.071)
I
Test oil temperature
OC (OF)
I
40 to 45 (1 04 to 11 3)
2. Temporary adjustment (Lever at full position)
In'ection rate
5
cm 1200 st.
I
cyl
(cu.in./200 st.
I
cyl)
Reference point Model
Pump speed
rpm
Remarks
Adjust with the full load set
screw.
Full load reference
point
1
900
High-speed lever set
point
1
1310
Adjust with the maximum
speed adjusting screw.
Adjust with the full load set
screw.
Full load reference
point
Adjust with the maximum
speed adjusting screw.
900
High-speed lever set
point
8FDlO to 15
8FDK20 to 30
for DPF
1410
Full load reference
point
1
900
Adjust with the full load set
screw.
High-speed lever set
point
1
1310
Adjust with the maximum
speed adjusting screw.
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