Installation Manual : X-TENSION 350 Median
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December 2018
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X-TENSION 350 Median Maintenance (Head on Impacts)
Head on Impacts
Key Repair Steps:
1. Remove the cables
2. Pull the rails back
3. Remove components from rails
4. Remove damaged posts
5. Assess damage
6. Reassemble
Step 1: Remove Cables
After a head on impact the cables may appear to be slack but may in fact still retain some
tension from the impact. Care must be taken when removing the cables.
DO NOT UNDO THE CABLES FROM THE GROUND ANCHOR END FIRST, ALWAYS
UNDO THE CABLES FROM THE CABLE BRACKET (post 7) FIRST.
Undo nuts at downstream cable bracket (post 7). Take out the bolts on the side of the impact
head that hold the friction plate in place and turn the friction plate back. Pull one cable at a
time from the front side of the impact head and completely remove them. Rotating the cables
as you pull them will help. Undo nuts at ground anchor end last and remove cables.
Step 2: Pull Rails Back Out
Attach a chain or two ton strap to the front of the impact head and pull upstream to its’ original
position with a light truck or utility vehicle. The components are easier to unbolt when the rails
are separated.
Step 3: Remove X-TENSION 350 Median Components
All components are attached to the rails with standard splice bolts. Unbolt and remove parts.
Step 4: Remove Posts
Undo the bolt at the bottom of Post 1 and pull out post. For all other damaged line posts,
attach a chain to the top half of the post and pull out of the ground with either a crane truck or
digger.
Step 5: Assess The Damage
Any part that cannot be reused must be replaced with a new part. In minor impacts (rails
telescoped less than 3m the cables can be reused by turning them end for end. If additional
damage has occurred, replace the cables. Generally, all the specialised components of the
system such as the head and brackets should be undamaged.
Step 6: Reassemble
Reassemble as per system installation instructions.
