Extang e-MAX TONNO Assembly instructions

Insert sliding clamp into
attachement bow and
rotate 90°, then secure
cab rail to underbody
rail with sliding clamp.
Clamps should be fully secured under
the radius section of the
underbody rail.
Tighten with 1/2” socket to 10 lb-ft.
Position bedrail on truck bed side 1/2” from inside of front bed
wall. NOTE: Make sure that both side rails are positioned
exactly the same distance from the truck bed.
Align the top of the underbody rail flush with the top of the truck
bed and secure the clamps as shown.
NOTE: Clamps should be located as close to the underbody rail
ends as possible.
1/2“
socket
10
lb-ft
10
lb-ft
Place tonno over cab
end of truck box.
NOTE: the cab rail should lay
over the front of bed wall.
1
Extang Corporation
5400 S. State Rd.
Ann Arbor MI 48108
734-677-0444, Fax: [phone]
1/2”
2
3
Carefully refold the tonno
without shifting its position
on the truck bed.
Register your warranty at:
0615-1401
Unfold the tonno fully and
adjust position over the
truck bed for proper
cab/tail
alignment.
• 1/2” Socket Wrench
• 3/16” Allen Wrench

Actuate red lever and
simultaneously pull the
support rod to remove.
Pull rear clamp
down and hook
under bottom edge
of bed wall flange.
Remove any snow or
foreign matter before
folding cover.
5Adjust slam latches so they fully engage the underbody rail flange.
Tighten with 3/16” allen wrench. 6With tailgate open, completely unfold the tonno and secure to the truck bed with spring clamps.
Slide rear
clamp out
to bed
wall.
Fold the tonno forward and
fasten the straps in the middle
section to the front rail.
Reach under and disengage slam
latches by pulling the release cable.
Raise the support rods
to engage the joint ball
in the third section bow.
Press firmly into place
to secure.
IMPORTANT NOTICE
While driving, cover must be completely
flat and secure with all clamps in the closed
position or completely folded up (all panels)
and secured at the cab. DO NOT DRIVE with
cover in partially opened position.
Note: Tarp cannot be removed from
aluminum frame. Attempting to do so will
cause damage and void the warranty.
Do not tow vehicle
from the rear with this
product in place.
Further adjustment can be
achieved by loosening
phillips screws, and sliding
metal latches forward
4
Raise the Tonno panel for more storageStow Tonno for convenient use
IMPORTANT: Before folding the
second section of the tonno, rear
clamps must be stowed into the rear
bow to prevent damage to fabric.
Failure to stow handle will
puncture tarp and void
warranty.
Slide the tether out and attach to the footman
loop on the underbody rail.
Fasten the tonno to
the underbody rail
with the tethers.
Release the real clamps and
fold the tonno forward.