![background image](http://html1.mh-extra.com/html/mack/e-tech-sb-210-034/e-tech-sb-210-034_service-manual_3224387154.webp)
Page 138
REPAIR INSTRUCTIONS
3. Measure and record the counterbore in four
places, 90 degrees apart. Using a depth
gauge with a three-inch extension, mark the
shallowest point. Subtract the lowest
number from the highest number. This is the
minimum amount to be machined for
cleanup.
SETTING UP COUNTERBORE TOOL PT2210
WITH CUTTER PLATE PT2210-3A
Refer to Figure 128.
1. Loosen the two cutter bit hold-down
capscrews (9). Install cutter bit (11) into
cutter plate PT2210-3A (13) by turning the
cutter bit adjuster (10) counterclockwise.
Cutter bit face must be facing a clockwise
rotation cut.
Do not tighten the cutter bit hold-down cap (12).
The cutter point should not extend beyond the
outer edge of the cutter plate. If the cutter bit does
stick out, damage to the bit will occur when
installing counterbore tool onto cylinder block.
2. Install the cutter plate on the main shaft (15).
Use the large end of hex key wrench
PT2210-14 (18) to hold the cutter plate and
tighten securely. The hole in the side of the
cutter plate accepts the large end of the tool.
Do not allow the cutter bit (11) to touch the
cylinder sleeve bore wall.
When the entire block must be counterbored, cut
the deepest bores first. This way, the tool can be
adjusted to the lowest depth and used for all
cylinders, ensuring uniform depth on all cylinder
counterbores.
3. Position the tool in the cylinder bore by
backing off the depth-set collars (5 and 16)
and lowering the cutter plate (13) into the
counterbore to center the tool.
4. Secure the cutter plate to the cylinder block
with four M16 x 2 x 90 hex-head capscrews
(3) and special washers (4) from the
counterbore tool kit PT2210.
5. Cross-torque the capscrews to 30 lb-ft
(41 N•m) using torque wrench J 24406 or
equivalent.
Lift T-handle (2) slightly (so cutter plate is not in
contact with the counterbore) and rotate the
mainshaft (15) counterclockwise to ensure cutter
plate turns freely without binding. If necessary,
loosen the capscrews and relocate the tool.
6. Using the counterbore tool T-handle (2),
raise the cutter plate approximately 1/2 inch
(12.7 mm) from the counterbore ledge.
7. Using hex key wrench PT2210-14 (18), turn
the cutter bit adjusting screw (10) clockwise
until the cutter bit contacts the counterbore
ledge. Do not touch the counterbore wall.
8. Back off the lower depth-set collar (16) and
lower the cutter plate until the cutter rests on
the ledge.
9. Rotate the lower depth-set collar down until
the collar contacts the main housing.
10. Rotate the collar an additional five
increments totaling 0.005 inch (0.127 mm).
Each graduation of the collar is one-
thousandth (0.001) of an inch (0.025 mm).
This will lift the cutter bit 0.005 inch
(0.127 mm) off the counterbore ledge,
allowing an accurate setting of the cutter bit.
It may be necessary to use a flashlight to see the
cutter bit adjusting screw.
5_106_00.bk Page 138 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs