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Section 1: Assembly & Set-Up
GB2084 Grapple Bucket 380-328M
3/17/20
12
Counterbalance Valve (Optional)
Refer to Figure 1-5:
11. Attach valve mounting bracket (#1) to screen
guard frame (#16) with four 5/16"-18 x 1" GR5 hex
head bolts (#5) and hex nylock nuts (#4). Tighten
nylock nuts to the correct torque.
12. Screw adapters (#11) to ports (LB, LR, RB, & RR) on
counterbalance valve (#12) until tight.
13. See important note above. Attach counterbalance
valve (#12) to valve mounting bracket (#1) with two
5/16"-18 x 2 1/2" GR5 hex head bolts (#6) and hex
nylock nuts (#4). Tighten nylock nuts to the correct
torque.
14. At port (LB), tighten hose (#7) to adapter (#11).
15. At port (LR), tighten hose (#9) to adapter (#11).
16. At port (RB), tighten hose (#8) to adapter (#11).
17. At port (RR), tighten hose (#10) to adapter (#11).
IMPORTANT:
Make sure ports LB & LR on counter
balance valve (#12) are on the left-hand side with LB
port at the bottom and LR port at the top. Counter
balance cartridge (#14) should be on the right-hand
side and at the top as shown.
Counterbalance Valve (Optional)
Figure 1-5
73666
18. Attach hydraulic hose clamps (#2) to spill screen
support (#1) as shown with 5/16"-18 x 1 3/4" GR5 hex
head
bolts (#3) and hex nylock nuts (#4). Do not tighten
nylock nuts at this time.
19. Make required adjustment to hydraulic
hoses (#7, #8, #9, & #10) and draw clamps (#2) up
tight by tightening hex nylock nuts (#4). Do not crush
hoses.
Refer to Figure 1-4 on page 11:
20. Tighten elbow fittings (#5A & #5B) to hydraulic
cylinders (#11).