North Cross Arm Assembly
•
The North Cross Arm Assembly consists of
two Extruded Rail sections joined by the
North Bearing Plate and Counterweight Arm.
•
The North Bearing Plate
has two welded-
on square nuts
for mounting the shock/s.
•
Orient the Extruded Rail sections so that the
1/4” slot is on the top.
•
Pre-install two of the 3/8” x 1-1/4” round
head bolts in each rail section.
•
Pre-install two 5/16” x 3/4” hex bolts in each
rail section.
•
Adjust the 3/8” bolts as necessary to align
with holes in North Bearing Plate.
•
Cutout for bearing should be closest to the
1/4” slot, the welded nuts should be closest
to the Counterweight Arm.
•
Make sure the rail sections are butted
together and close to straight. Install spring
lock washers and nuts and tighten lightly.
•
Install the Counterweight Arm in the same
way. Make sure that the arm is close to
centered on the rail sections.
•
Install spring lock washers and nuts.
•
When the alignment looks good (rails are
butted/centered, and rails make a straight
line), tighten 3/8” nuts to 30 ft-lbs, and 5/16” nuts to 15 ft-lbs.
South Cross Arm Assembly
•
The South Bearing Plate
does not
have weld-on square nuts.
•
Assemble similarly to the North Cross Arm.
•
Again, make sure the cutout for the bearing is offset closer to the 1/4” slot.
Method #1 or Method #2
At this point there are a couple of ways to proceed:
1) Building the rack from the “pole-up”, one component at a time.
2) Assembling rails, modules, and axle together and lifting on to the pole.
Method 1
eliminates the step of lifting the completed sub-assembly (up to 200 lbs) on to the
pole, but also makes installing / aligning the modules more difficult on the rails.
