TM 9-4910-579-14&P
ANCHORING DEVICE
Furnished with the anchoring device are different lengths of clamps, centering screws and anchor bolts.
The
capacities of these different parts are as follows:
ANCHOR CLAMP ASSEMBLIES
055-0461-23
Anchor
Clamp
Assembly
#1
Capacity
2-5/8"
to
3-1/4"
Diam.
055-0462-20
Anchor
Clamp
Assembly
#2
Capacity
3-1/4"
to
3-7/8"
Diam.
055-0463-28
Anchor
Clamp
Assembly
#3
Capacity
3-7/8"
to
4-1/2"
Diam.
055-0464-25
Anchor
Clamp
Assembly
#4
Capacity
4-1/2"
to
5-1/4"
Diam.
CENTERING SCREWS
065-0456-05
Centering Screw - Short
Capacity
Up to 3-13/16" Diam.
055-0457-47
Centering Screw - Medium
Capacity
3-13/16" to 4-5/16" Diam.
062-0457-01
Centering Screw - Long
Capacity
4-5/16" Diam. and Up
EXTENSION RODS
055-0471-46
Short Extension Rod
4-5/8" Long
Capacity
4-1/2" to 7"
055-0472-43
Medium Extension Rod
6-5/8" Long
Capacity
6-1/2" to 10"
055-0473-40
Long Extension Rod
8-5/8" Long
Capacity
8-1/2" to 12"
INSTALLATION OF ANCHORING DEVICE
The anchoring device is to be fastened into the cylinder next to the one to be bored. In the case of
a four cylinder block, only two settings of the anchoring device are required, as Number 1 and
Number 3 cylinders can be bored with anchoring device in Number 2 cylinder, and Number 2 and
Number 4 can be bored with the anchoring device in Number 3 cylinder. A six or eight cylinder
block requires four settings of the anchoring device.
To install the anchoring device, proceed as follows:
Select the longest length of clamp which will freely enter the bore when in the inverted position
shown in Figure 3. Then, if the shoulders A-A allow more than 1/16" endwise movement of the
clamp, loosen the two adjusting screws (each one the same amount as nearly as possible by eye)
until the endwise movement is between 1/32" and 1/16". Then fasten this clamp to the anchor body
by means of the clamp pivot pin, in the position indicated in Figure 2.
Turn the centering screws in if necessary (keeping each one/as nearly central with the centering
spider as possible by eye) until it will freely enter the cylinder and yet have little side play in any
direction. Select the proper combination of extension rods and coupling with the anchor clamp and
body. Screw the assembly in or out until the approximate length is obtained.
-7-