Top View - Cascade Viewmast II 30C Triple Installation Instructions Manual

3. Welding must be performed by a qualified welder only,
using the following procedure:
a.
Disassemble the outer channel from the mast prior to
welding. See the Triple Lift Viewmast I I Service Manual,
Form 5140, or the Quad Lift Viewmast II Service
Manual, Form 5213, for disassembly procedures.
b.
Clamp the welding ground to the outer channel cross-
member, See Figure 2.
WARNING:
C. Use E7018 low hydrogen rod.
d.
Preheat to 200" F., and maintain this temperature during
welding. After welding, allow to slow cool.
WARNING
WARNING:
4. The measurements
shown in Figure 3 should be taken after
welding and cooling the mast. These dimensions ensure
that the mast uprights will slide together easily.
DO NOT WELD THESE AREAS.
HORIZONTAL WELDS WILL
REDUCE THE STRUCTURAL
Figure 2. Clamp Ground and Weld.
OUTER'
UPRIGHT
n
TOP VIEW
n
MEASURE INSIDE
TO INSIDE OF
OUTER UPRIGHT
THROUGH ENTIRE
Figure 3. Dimensional Inspection
4