4 01-11

4 01-11
NUMBER: 4–01–11
April 2011
S.M. REF.: Listed in Table
ENGINE: EPA04 / EPA07 Series 60
DATE:
SUBJECT: CUTTING SERIES 60 COUNTERBORES
ADDITIONS, REVISIONS, OR UPDATES
Publication Number
Platform
Section Title
Change
Page Number(s)
DDC-SVC-MAN-0005
EPA07 Series 60
Engine – Additional
Information
Procedures to cut the
counterbore for repair
shims have been added.
Insert as stated.
DDC-SVC-MAN-0004
EPA04 Series 60
Engine – Additional
Information
Procedures to cut the
counterbore for repair
shims have been added.
Insert as stated.
NOTE: Page numbers are based on the most recent version of the individual publication and may be adjusted throughout the annual print cycle.
MACHINING CYLINDER BLOCK COUNTERBORES USING SHIMS
Cutter plate assembly (J–41065) is used with Counterbore tool (PT–2250–B) to machine cylinder block
counterbores for the installation of repair shims. See Figure 1.
NOTE:
Use the appropriate Detroit Diesel part when installing the counterbore shims.
1. Cylinder Block
Figure 1
2. Cylinder Protrusion
3. Cylinder Liner
Cylinder Liner Protrusion
1. Remove cylinder head. Refer to section.
2. Remove oil pan. Refer to section.
3. Remove cylinder liner. Refer to section.
4. Ensure block deck surface and boring tool base plate are clean and free of burrs.
5. Plug all open areas of the engine compartment to seal out any contaminating particles.
NOTE:
Ensure cutter is marked Series 60.
NOTE:
Maintain a sharp cutter bit to ensure the cylinder block counterbore is accurately machined.
6. Retract the cutting bit into the cutting plate.
7. Mount the counterbore cutting tool over the cylinder to be machined. Install mounting bolts
into the appropriate cylinder head bolt holes, leaving the bolts loose.
8. Lower the cutting plate (2) to rest in the cylinder bore (1) and rotate the T-handle to center the
tool. See Figure 2.
Figure 2
Cutter Plate (PT–2090) Location
9. Torque the two opposing mounting bolts to 68 N·m (50 lb·ft). Verify that the tool is still
centered in the bore. If not, then loosen bolts and re-center the tool. If centered, torque the two
remaining mounting bolts to 68 N·m (50 lb·ft).
10. Raise the tapered cutting head from the block and insert the spacer block. While there is no load
on the tool, extend the cutter bit outward (using a clockwise rotation of the cutting bit screw)
until it just touches a 0.15 mm (0.005 in.) feeler gauge or shim placed next to the vertical wall
of the counterbore. Tighten the Allen head hold-down screws.
Figure 3
Spacer Block PT 2200–83
11. Remove the spacer block and slowly lower the cutting head into the counterbore. (Be careful
not to damage the cutting bit).
12. Adjust the lower locking collar downward until it comes in contact with bronze bushing, and
the cutter bit is not resting on lower surface of counterbore. Rotate the T-handle to ensure there
is no binding or scraping of the counterbore walls. If so, adjust cutting bit.
13. Slowly back off the lower locking collar until the cutting bit is just touching the lower surface
of the counterbore.
14. Set the depth of the cut by using the repair shim. Insert the shim between the locking collars,
lower the upper lock collar down until it comes in contact with the shim. Tighten the thumb
screw on the top collar.
NOTE:
If cutting more than one counterbore, the shim used to set the depth of the cut in each cylinder must
be used in that cylinder. Failing to do so may increase/decrease the liner protrusion.
15. Lubricate the tool bushings. Back-off the lower collar by two graduations, 0.0254 mm (0.0001
in.). Rotate the T-handle clockwise with moderate, constant pressure, stopping at random
positions to prevent creating a ridge in the counterbore. Continue backing-off the lower collar,
two graduations at a time, until the collars come together.
16. Raise the cutting tool from the counterbore and insert depth spacer.
17. Retract the cutting bit into the cutting plate to protect the bit.
18. Remove the cutting tool from engine.
19. Remove all protective material used to seal out any contaminating particles and clean any/all
areas that were not protected.
20. Place the shim on the lower ledge of the counterbore.
21. Insert the cylinder liner and measure liner protrusion. Refer to section.
22. Install the cylinder liner. Refer to section.
23. Install the cylinder head. Refer to section.
24. Install the oil pan. Refer to section.
ADDITIONAL SERVICE INFORMATION
Additional service information is available in Power Service Literature.
Detroit Diesel®, DDC®, Series 60® and the spinning arrows design are registered trademarks of Detroit Diesel Corporation.
© Copyright 2011 Detroit Diesel Corporation. All rights reserved. Printed in U.S.A.
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