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3.16 ARMS AND PLATFORM POSITIONING AND
SUPPORT
NEVER WORK UNDER N ELEVATED PLAT FORM UNTIL IT HAS BEEN
RESTRAINED FROM MOVEMENT WITH SAFETY PROPS, BLOCKING OR OVER-
HEAD SLING.
The arm stack can be supported by using an overhead
crane,(See Figure 3-42.). If an overhead crane is not available
the stack may also be lifted by using a fork-truck using the fol-
lowing instructions:
1. With the forks on the fork-truck slid close together, enter
from the front of the machine and place the forks on the
cross tube of the second arm assembly below the plat-
form.
2. Slowly lift the arm stack with the fork-truck while the
manual descent valve is being engaged (this allows the
oil to drain back into the tank).
3. Place machine on safety prop and leave the fork truck in
place.
4. At this point the lift cylinder removal may begin. (Refer
to Section 4.6, Lift Cylinder Removal)
If removal of the platform becomes necessary use the above
procedure to stabilize the platform for pin and platform
removal.
3.17 PLATFORM REMOVAL
1. Support the platform using an overhead crane with
straps capable of lifting at least 500 lbs (227 kg) (See Fig-
ure 3-42.). Refer to Section 3.16, Arms and Platform Posi-
tioning and Support.
2. Disconnect and remove the platform control station and
wiring harness at the platform. Disconnect AC recepta-
cle cable if applicable. Route the cables out through the
hole at the right-rear of the platform to free platform of
any constraints when lifting.
3. Remove the bolts attaching the pins and slide blocks at
each corner to the arm stack. Carefully remove the four
pins attaching the platform to the arm stack.
4. Lift the platform from the arm stack and set aside.
NOTE: When attaching platform back onto scissor arm assembly,
follow removal procedures in reverse order.
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SECTION 3 - CHASSIS & SCISSOR ARMS
3.18 SCISSOR ARMS REMOVAL
1. Remove platform (refer to Section 3.17, Platform
Removal).
2. Disconnect all wiring and cables attached to scissor arm
assembly.
3. The scissor arms can be removed as a complete unit or
individually.
Removing Scissor Arm Assembly as a Complete Unit
1. Remove the pin attaching the bottom scissor arms to
the rear of the frame by removing the bolt.
2. Place two straps around each end of the entire scissor
arm assembly. Using an overhead crane, slowly and
carefully move the arm stack forwards so that slide
blocks at front of machine slide out the front of the slide
channel on the frame.
NOTE: Overhead crane and straps must be capable of lifting at
least 2000 lbs (907 kg).
3. Once slide blocks are clear of machine, the scissor stack
can be moved to a more desirable location for further
arm disassembly.
Removing/Installing Scissor Arms Individually
See Figure 3-43., Figure 3-44., Figure 3-45. and Figure 3-46.
1. With the platform removed, start with the top arms
(closest to platform).
2. Secure each arm section being removed using an over-
head crane with suitable lifting straps.
3. Remove the bolts securing the connecting pins in place.
4. Remove the pins from the arms.
5. Remove the arm section from the machine using the
overhead crane.
6. Repeat previous steps for remaining arm sections.
NOTE: When attaching scissor arm assembly back onto frame,
follow removal procedures in reverse order.
Self locking fasteners, such as nylon insert and thread deform-
ing locknuts, are not intended to be reinstalled after removal.
Always use new replacement hardware when installing lock-
ing fasteners.
3-39
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