669224-R5
24
ERVICE
S
5.2 Arms
5.2-1 Arm Assembly Removal
and Installation
The following procedures can be performed with the
attachment mount on the truck.
1 Extend the arms. Lower the attachment to position the
forks or arms .50 in. (12 mm) above the floor. Remove
the cotter pin, locking cap and nut retaining the cylinder
rod to the arm lug.
2 Attach a suitable overhead hoist and chain to the arm.
Chain must be kept away from the arm bearing surface.
WARNING: Check the attachment
weight (located on the nameplate)
to make sure the overhead hoist and
chains or straps are at least the rated
capacity of the attachment.
WARNING: Keep fingers and feet out
from under the forks or arms.
3 Retract the cylinder rods until they come out of
engagement with the arm lugs.
4 Pull the arm assembly out of the frame.
5 Inspect the arm bearings for wear. If the bearings
are worn in any area to a thickness less than .040 in.
(1 mm), they must be replaced. Refer to Section 5.2-5
for removal and installation.
6 For reassembly, reverse the above procedures, except
for the following instructions:
• Lubricate the cylinder rod threads, nut threads and
spherical portion of nut with wheel bearing grease.
• Install a hex washer on the rod end with the beveled
side facing the lug.
• Engage the rod into the lug.
• Tighten the rod end nut to the torque values below.
Prevent the rod from turning by using a wrench on
the hex washer.
25D, 35D, 40D, 50D – 150–175 ft.-lbs. (200–235 Nm)
70D, 80D, 100D – 225–250 ft.-lbs. (305–340 Nm)
NOTE: The rod end nut is being tightened against
the hex washer. The nut will not be tight against the
arm lug. This looseness allows for cylinder alignment
during clamping.
• Install a locking cap and cotter pin.
• Lubricate the bearing portion of the arm bars with a
thin film of chassis grease.
CL2234.eps
3
4
2
1
1
Bearing
Surface
Arm
Lug
.50 in.
(12 mm)
CL2235.eps
Hex Washer
Beveled Side
Facing Lug
Arm Lug
6
To Next Page
Loading...
Need help?
General
