DETROIT DIESEL 53
SHOP NOTES - TROUBLE SHOOTING - SPECIFICATIONS - SERVICE TOOLS
REWORKING BLOWER END PLATES FOR IN-LINE ENGINES
On non-turbocharged engines built prior to serial number 3D-34008 when oil is detected on the blower rotors or inside
surface of the housing, the blower end plate can be reworked to accommodate a new lip type oil seal or a steel insert.
NOTE: Slight phonographic grooves can actually improve sealing. Unless wear is considerable and oil leakage is
evident, the end plate need not be reworked.
Rework Blower End Plate
Use tool kit J 9533 to rework the end plate.
NOTE: On some prior serviced blowers, the end plates may have been reworked to accommodate a steel insert.
In such cases, proceed as follows but omit Step 10.
Adjust the tool holder J 9533-2 and cutting tool J 9533-3 for the proper counterbore depth as follows:
Insert the rough cutting tool J 9533-3 in the tool holder as shown in Fig. 1.
Position the holder and the cutting tool in the fixture J 9533-1.
Loosen the "upper knurled ring" -on the tool holder.
Rotate the "lower knurled ring" to raise or lower the cutting tool. Turn the "lower knurled ring" until there is a
distance of .275 " - .285 " between the end of the cutting tool and the bottom of the fixture.
Tighten the "upper knurled ring".
Place fixture J 9533-1 on the blower end plate.
3. Clamp the fixture and the end plate loosely to the bed of a drill press.
Fig. 1 - Adjustment of Tool Holder
Fig. 2 · Install Cutting Tool in Holder
March, 1973 SEC. 3.0 Page 1