Lift Cylinder - Toro ProCore 648 Service Manual

Lift Cylinder

4
RIGHT
FRONT
3
1
1. Main frame
2. Shackle (4 used)
3. Extension spring (2 used)
4. Carriage screw (4 used)
5. Spring plate (2 used)
6. Flange nut (4 used)
Removal (Fig. 41)
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. Remove tine heads from stomper arms to allow cor-
ing head to be fully lowered.
CAUTION
The extension spring is under tension and may
cause personal injury during removal. Use cau-
tion when disconnecting spring from machine.
Hydraulic System
5
6
7
2
8
9
7. Clevis pin (4 used)
8. Hair pin (4 used)
9. Retaining ring
10. Thrust washer
11. Cylinder pin
12. Spacer (2 used)
9
10
11
14
15
12
10
16
17
13
11
Figure 41
4. Disconnect the lower end of one extension spring
(item 2) from frame:
A. Remove service latch from coring head. Turn key
switch to ON (engine not running). Move traction le-
ver to forward direction and depress lower switch on
handle to fully lower coring head.
B. Loosen, but do not remove, both flange nuts (item
6) that secure the spring plate (item 5) for one of the
extension springs.
C. Using a 1/2" breaker bar, hold spring plate (item
5) to prevent it from moving and remove upper
flange nut and carriage screw (item 4) from spring
plate and coring head frame (Fig. 42).
D. Using lower carriage screw and flange nut as a
pivot, carefully release tension on extension spring
by rotating spring plate with breaker bar.
E. Remove hair pin (item 8) and clevis pin (item 7)
that secure spring shackle (item 2) to frame.
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9
18
9
13. Lift cylinder
14. O–ring
15. Hydraulic fitting
16. O–ring
17. Hydraulic hose
18. Coring head frame
ProCore 648