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ProCore 648Page 7 – 6Coring Head
Stomper Arms
1. Coring frame
2. Cap screw
3. Flat washer
4. Retaining ring
5. Ball bearing
6. Stomper arm
7. Pulley
8. Bearing housing
9. Crankarm
10. Square key
11. Coupling
12. Spacer tube
Figure 5
FRONT
RIGHT
9
10
11
12
1
2
3
4
5
6
7
8
4
5
6
2
2
3
3
150 to 170 ft–lb
(203 to 230 N–m)
150 to 170 ft–lb
(203 to 230 N–m)
ANTISIEZE
LUBRICANT
STOMPER ARMS #1 AND #2 SHOWN
NOTE: The six (6) stomper arms used on the ProCore
648 are identical. Coring crankshaft positions are identi-
fied as #1 through #6. The #1 position is on the right
(pulley) side of the coring crankshaft (Fig. 6).
1. #1 position 2. #6 position
Figure 6
1
2