9008-08
TM 5-2420-230-24-1
Installation
12. If there were shims installed between the
hardened washer and the boom, install the
1. Put the boom into position on the machine. On
shims. The correct thickness of shims will cause
580M machines, carefully guide the backhoe
the ears of the boom to be pulled together 1 to 3
hoses through the swing tower.
mm (1/16 to 1/8 inch) when the self-locking nut is
tightened.
2. If necessary, install flat washers between the
boom and the swing tower. The flat washers
13. Install the hardened washer and the self-locking
should fill the gaps between the boom and the
nut for the pivot pin. Tighten the self-locking nut
swing tower. They should also keep the boom
to a torque of 678 to 949 Nm (500 to 700
centered in the swing tower.
pound-feet).
3. Install the pivot pins for the boom. Turn the pivot
14. Fasten acceptable lifting equipment to the dipper
pins as necessary so that the hole in the ear of
cylinder. Move the dipper cylinder as necessary
each pivot pin is aligned with the hole in the
so that the rod eye is aligned with the hole in the
swing tower.
dipper.
4. Install the spacers, the hardened washers, and
15. Install the pivot pin for the dipper cylinder.
the bolts to fasten the pivot pins to the swing
16. Install the flat washer(s) and the snap ring to
tower.
fasten the pivot pin for the dipper cylinder.
5. On 580M machines only, install the vertical
17. If the machine has an extendable dipper, connect
clamps and the hardware.
the extension cylinder hoses at the connections
6. On 580M machines only, connect the backhoe
inside the upper end of the boom.
hoses to the backhoe control valve. On 580
18. For all machines except the 580M without
Super M and 590 Super M machines, connect
extendable dipper, connect the bucket cylinder
the backhoe hoses at the connections inside the
hoses at the connections inside the upper end of
lower end of the boom.,
the boom. For 580M machines without
7. Fasten acceptable lifting equipment to the boom
extendable dipper, connect the bucket cylinder
cylinder. Move the boom cylinder as necessary
hoses at the bucket cylinder.
so that the rod eye is aligned with the swing
19. Use molydisulfide grease to lubricate all pivot
tower.
pins.
8. Install the pivot pin for the boom cylinder.
20. Run the engine at 1000 rpm (r/min). Slowly
9. Install the flat washer(s) and the snap ring to
operate the bucket, dipper, dipper extension (if
fasten the pivot pin for the boom cylinder.
equipped), and boom cylinders through four
complete cycles to remove any air from the
10. Put the dipper in position on the boom.
circuits.
11. Install the pivot pin for the dipper.
Bur 6-42130
Issued 3-01
Printed in U.S.A.
