TRUCK SERVICE MANUAL
FUEL SYSTEM
17. Back off adjusting screw and retract needle, then
15. Install drain connection.
check delivery.
Run injector through a test cycle and check the cc
Table 6-1-16: Injector Orifice Plugs
delivery. If delivery is lower than specifications given in
Straight Inside
Flanged Inside
Table 6-1-15, turn the knob with indicator point until it is
Part
Diameter
Part
Diameter
spaced 3/8 inch [9.5 mm] from the large knob. Fig. 6-1-
Number Inch [mm]
Number Inch [mm]
114.
163065
0.015
[0.38]
177283
0.015
[0.38]
163066
0.016
[0.41]
177284
0.016
[0.41]
163067
0.017
[0.43]
177285
0.017
[0.43]
148338
0.018
[0.46]
177286
0.018
[0.46]
163068
0.019
[0.48]
177287
0.019
[0.48]
163069
0.020
[0.51]
177288
0.020
[0.51]
163070
0.021
[0.53]
177289
0.021
[0.53]
163071
0.022
[0.56]
177290
0.022
[0.56]
149726
0.023
[0.58]
177291
0.023
[0.58]
163072
0.024
[0.61]
177292
0.024
[0.61]
163073
0.025
[0.64]
177293
0.025
[0.64]
163074
0.026
[0.66]
177294
0.026
[0.66]
163075
0.027
[0.68]
177295
0.027
[0.68]
163076
0.028
[0.71]
177296
0.028
[0.71]
163077
0.029
[0.74]
177297
0.029
[0.74]
163078
0.030
[0.76]
177298
0.030
[0.76]
Fig. 6-1-114, F60216. Knob spacing
163079
0.031
[0.79]
177299
0.031
[0.79]
16. Slowly push the small knob in until you feel the
128132
0.032
[0.81]
179332
0.032
[0.81]
needle enter the orifice plug inside diameter.
128133
0.033
[0.84]
179333
0.033
[0.84]
Then turn the knob counterclockwise to lock the
128134
0.034
[0.86]
179334
0.034
[0.86]
needle shaft to the larger knob with the indicator.
128135
0.035
[0.89]
179335
0.035
[0.89]
131092
0.036
[0 91]
179336
0.036
[0.91]
Turn the indicator knob in until you feel the
131093
0.037
[0.94]
179337
0.037
[0.94]
needle contact the plug. Index the indicator with
131094
0.038
[0.97]
179338
0.038
[0.97]
a mark on the largest knob and advance one
131095
0.039
[0.99]
179339
0.039
[0.99]
mark.
131096
0.040
[1 02]
179340
0.040
[1.02]
Note: Test stand must be running while burnishing orifice
131097
0.041
[1.04]
179341
0.041
[1.04]
with ST-708.
131098
0.042
[1.07]
179342
0.042
[1.07]
132800
0.043
[1.09]
179343
0.043
[1.09]
132801
0.044
[1.12]
179344
0.044
[1.12]
132802
0.045
[1.14]
179345
0.045
[1.14]
131099
0.046
[1.17]
179346
0.046
[1.17]
131100
0.047
[1.19]
179347
0.047
[1.19]
131101
0.048
[1.22]
179348
0.048
[1.22]
131102
0.049
[1.24]
179349
0.049
[1.24]
131103
0.050
[1.27]
179350
0.050
[1.27]
131104
0.051
[1.29]
179351
0.051
[1.29]
131105
0 052
[1.32]
179352
0.052
[1.32]
131106
0.053
[1.35]
179353
0.053
[1 35]
131107
0.054
[1.37]
179354
0.054
[1.37]
131108
0.055
[1.40]
179355
0.055
[1.40]
132803
0.056
[1.42]
179356
0.056
[1 42]
132804
0.057
[1.45]
179357
0.057
[1.45]
Fig. 6-1-115, F60217. Burnishing operation
132805
0.058
[1.47]
179358
0.058
[1.47]
Note: A very useful tool for checking orifice inside
132806
0.059
[1.50]
179359
0.059
[1 50]
diameter is available directly from the Datcon Inst. Co.
132807
0.060
[1.52]
179360
0.060
[1.52]
132808
0.061
[1.55]
179361
0.061
[1 55]
East Petersburg, Pa. 17520, or their dealers as "Kwik
132809
0.062
[1.57]
179362
0.062
[1.57]
Chek Hole Gauge", Model No. 10-0, Part No 39899.
132810
0.063
[1.60]
179363
0.063
[1.60]
Another version of this tool is available from the Coventry
132811
0.064
[1.63]
179364
0.064
[1.63]
Gauge and Tool Co. Ltd., Coventry, England. Order
132812
0.065
[1.65]
179365
0.065
[1.65]
size No. 1 for 0.010 inch [ 25 mini] to 0.040 Inch [1.02
132813
0.066
[1.68]
179366
0.066
[1.68]
mm] orifice plugs and No. 2 for 0.030 inch [.76 mm] to
132814
0.067
[1.70]
179367
0.067
[1.70]
0.080 Inch [2.03 mm] orifice plugs. These tools are
132815
0.068
[1.73]
179368
0 068
[1.73]
132816
0.069
[1.75]
179369
0.069
[1.75]
especially helpful If orifice plugs become mixed.
132817
0.070
[1.78]
179370
0 070
[1.78]
Measure orifice at base end (not wrench end) as shown
in Fig. 6-1-94. This tool is now available from Cummins
as ST1332.
480