SERVICE MANUAL
CONNECTING RODS, PISTONS, RINGS & SLEEVES
Section 5
e.
To disassemble tool holder from unit,
remove cap screw and washer. Pull out on
plunger (9) and permit shaft to move back
and forth freely. By hand, bump tool holder
against adapter plate until it is free from
unit. DO NOT strike or damage the tool bit.
Figure 24. - Counterboring Tool and Component Parts
1. Handle
2. Adjusting nut
3. Driver unit
4. Cap screws
5. Cap screws
6. Adapter plate
7. Tool holder
8. Cap screw
9. Plunger
10. Locking screw
3.
Preset the tool bit as follows:
a.
Install tool bit (1, Fig. 25) into tool holder
(5).
b.
Place feeler gauge (3) on O.D. of tool
holder as shown.
c.
Push tool bit out until it touches feeler
gauge.
d.
Lock tool bit into position with clamp (4).
NOTE: Tool bits must be handled with extreme care,
to avoid possible damage from shock contact with
hard surfaces.
Figure 25. - Presetting Tool Bit
1. Tool bit
2. Press with fingers here
3. Feeler gauge 0.20-0.25 mm
(0.008-0.010 In.) thick
4. Clamp
5. Tool holder
4.
Prepare Crankcase for counterboring as follows:
a.
Remove all scale and carbon from deck
and counterbore.
b.
Remove all burrs and nicks. Check edges
of block for raised areas and remove with
file. DECK MUST BE FLAT.
5.
Install Counterboring Tool as follows: (Refer to Fig.
26).
a.
Pull out handle (1, Fig. 26) until plunger (9)
will hold tool holder (7) in UP position.
b.
Place unit on crankcase with hold down
holes matching holes in crankcase.
e.
Tool bit is now set for correct diameter cut.
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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