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ProCore 648Page 7 – 8Coring Head
Coring Crankshaft Bearing Housings
1. Cap screw
2. Flat washer
3. Spacer tube
4. Stomper arm
5. Ball bearing
6. Retaining ring
7. Crankarm
8. Ball bearing
9. Bearing housing
10. Spacer
11. Crankarm
12. Square key
13. Coupling (#5 shown)
14. Lock nut
15. Coupling plate
16. Iso mount
17. Cap screw (4 used per plate)
18. Cap screw
19. Coupling
20. Cap screw (4 used per housing)
21. Hardened washer
22. Spring pin (2 used per housing)
23. Lock nut
24. Coring head frame
Figure 8
2
3
4
5
6
150 to 170 ft–lb
(203 to 230 N–m)
ANTISIEZE
LUBRICANT
70 to 80 ft–lb
(95 to 108 N–m)
7
8
9
10
11
1
12
13
14
15
24
23
22
21
1
1
2
2
2
2
8
6
5
16
17
18
19
20
4
14
16
18
21
150 to 170 ft–lb
(203 to 230 N–m)
ANTISIEZE
LUBRICANT
150 to 170 ft–lb
(203 to 230 N–m)
70 to 80 ft–lb
(95 to 108 N–m)
150 to 170 ft–lb
(203 to 230 N–m)
FRONT
RIGHT
BEARING HOUSING FOR #5 AND #6
STOMPER ARMS SHOWN
NOTE: The three (3) bearing housings used on the Pro-
Core 648 are identical. Coring crankshaft positions are
identified as #1 through #6. The #1 position is on the
right (pulley) side of the coring crankshaft.
Removal (Fig. 8)
1. Park machine on a level surface, fully raise coring
head, engage parking brake, stop engine and remove
key from the ignition switch. Secure coring head with
service latch.
2. Remove rear hood (see Operator’s Manual).
3. If bearing housing for #1 and #2 stomper arms is to
be removed, remove secondary coring head drive belt
(see Secondary Drive Belt Removal in this section).
4. Remove stomper arms on either side of bearing
housing that is to be removed (see Stomper Arm Re-
moval in this section).
5. Drive Spring pins from bearing housing and coring
head frame.
6. Support bearing housing assembly to prevent it from
falling. Remove fasteners that secure bearing housing
assembly to coring head frame. Remove bearing hous-
ing assembly.