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Instructions 67-9319
Bacharach, Inc.
Page 3-3
INJECTOR CALIBRATOR CD3
OPERATION
Figure 3-4. Changing Speed
Figure 3-5. Changing Cams
Figure 3-6. Cam & Hardware
3.1.3 Changing Cams
The cam is secured in place on the tapered end of
the camshaft by a 3/4 in. hex nut and a 3/4 in. plain
washer, and is locked to the shaft by a key.
When shipped from the factory, the calibrator has
Cam 189 (67-6370) installed (used for most
Cummins injectors). To change the cam:
1. Switch the power On/Off Switch to OFF.
2. Raise hinged lids of the cambox and flywheel.
3. Insert barring tool into one of the radial holes
in the flywheel to hold camshaft in position.
4. Bar over flywheel until push rod is fully ex-
tended from cambox (cam at maximum lift).
5. Install push rod lock to hold the push rod when
the cam is being removed.
NOTE:
Failure to do so can lead to
disengagement of follower parts and
subsequent early failure of cambox.
6. Using a 1-1/8 in. box wrench, unscrew and
remove the nut, washer and cam.
7. Select proper cam for the injector to be tested:
Using Cummins service publications as a guide.
Cam Part No.
Cam Identification
67-6370
189
67-6369
310
67-6861
230
67-6870
169
77-0629
248
77-0823
272
77-0824
426
8. Fit the cam in place on the camshaft and make
sure key in the cam is properly seated.
NOTE:
It is a good practice to check that
the cam does not wobble on the camshaft.
If wobble exists, dress the camshaft where
required as applicable.
9. Secure the cam with the washer and hex nut.
10. Remove pushrod lock.
The calibrator is now ready for inserting the
discharge head, see Section 3.1.4.
6 Shim
5 Move to Pulley Position
3 Barring Tool
(push down)
3 Barring Tool
2 Cambox Lid
6 Wrench
6 Washer and Nut
5 Cam (Cam 189 Shown)
Содержание 67-7622
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