1. DUST COVER
2. SNAP RING
3. LIFT CYLINDER
4. TOP CROSS BAR
5. THREADED SCREW
6. FRAME SLIDER BLOCKS
Figure 6. Snap Ring, Dust Cover, and Frame Slider
Blocks, Remove
NOTE:
Access to cotter and chain anchor pins is
from behind sail weldment, where lift cylinder is
mounted.
16.
Disconnect first set of lift chains by removing
two cotter pins and chain anchor pins from bot-
tom of second intermediate mast weldment. See
Figure 8.
17.
Remove two cotter pins and chain anchor pins
from chain anchors mounted on sail cover
bracket. Remove first set of lift chains from
mast. See Figure 8.
18.
Using lifting device, lift mast from aerial work
platform frame. Grab frame slider blocks so
that they do not fall out. See Figure 6.
19.
Lower mast and place in a horizontal position.
DISASSEMBLE
NOTE:
Remove self-tapping screws with hand tools
and not power tools. The use of power tools can
strip the self-tapping screws and damage them.
1.
Remove threaded end of fourth phasing cable
from bracket on carriage weldment. See Fig-
NOTE:
If thread is stripped out of slider block, re-
place with new slider block. See Parts Manual.
2.
Remove self-tapping screws, setscrews, and
mast slider blocks from top and bottom of car-
riage weldment. See Figure 9.
3.
Remove two cotter pins and two chain anchor
pins, and disconnect lift chains from bottom of
carriage weldment. See Figure 10.
4.
Remove two pins and four nuts from bottom of
chain anchors. Remove chain anchors from
chain retainer blocks and carriage weldment.
See Figure 10.
5.
Remove two cotter pins and two chain anchor
pins, and disconnect lift chains from chain re-
tainer block at top of carriage weldment. See
Figure 10.
6.
Using lifting device, lift carriage weldment up
and slide it off of fourth intermediate mast
weldment.
7.
Remove nut, spring, and washer from third
phasing cables. See Figure 5.
8.
Remove third phasing cable from bracket on
fourth intermediate mast weldment. See Fig-
ure 5.
9.
Remove self-tapping screws, setscrews, and
mast slider blocks from top and bottom of
fourth intermediate mast weldment. See Fig-
ure 9.
10.
Remove two cotter pins and two chain anchor
pins, and disconnect lift chains from bottom of
fourth intermediate mast weldment. See Fig-
ure 10.
11.
Remove two pins and four nuts from bottom of
chain anchors. Remove chain anchors from
chain retainer blocks on fourth intermediate
mast weldment.
Mast Repair
4000 SRM 1916
8