iSi iSi-HM-AL-690 User manual

Installation Guide
Extreme Duty Adjustable H-Mount
for Caravans and Camper Trailers
iSi-HM-AL-(690, 810, 910)
Thank you for your purchase of the iSi
Extreme Duty Adjustable H-Mount®.
The bolt-on iSi adjustable H-Mount is
an incredibly strong mount that
braces the drawbar arms and
eliminates drawbar pressure hot
spots by spreading the load over a
wide area.
Slotted brackets allow adjustment
over a wide area to achieve the
perfect position.
Maximum Load: 200kg
Mass: 8.0kg
1H-Mount qty 1
2Foot Bracket qty 4
3U-Bolt qty 4
4Washer Plate qty 4
5M12 Nyloc Nut qty 4
6Nut Pad qty 4
7M10 Bolt qty 8
810mm Spring Washer qty 8
910mm Washer qty 8
10 End Cap qty 4
Tools - 16mm socket or box wrench & 19mm box/open wrench

Determine the ideal position
of the H-Mount (Item 1) on
the drawbar and place the H-
Mount (item 1) onto the
drawbar.
Hint: You will be able to fine
tune the position later.
Install U-bolts from
underneath the drawbar
arms and pass through the
shorter slots in the Foot
Bracket (item 2). Lower the
Washer Shim (Item 4) and
retain with the M12 Nyloc
Nuts (Item 5).
Hint: Bracket can be
positioned on either side of
each H-Mount arm.
Hint: Do not tighten yet.
1- Insert the Nut Pad (Item
6) into the H-Mount arm and
align with the slots in the
Foot Bracket (Item 2).
2- Push the vertical face of
the Nut Pad from behind to
ensure that Nut Pad is hard
up against the side of the H-
Mount arm.
3- Install the 10mm Spring
and Flat Washers (Items 8 &
9) and M10 Bolts (Item 7)
through the slots in the Foot
Bracket and H-Mount arm
tube.
Hint: Do not tighten yet.

Fine-tune the position of the
H-Mount to ensure that the
mount is square and set at
the ideal position on the
drawbar.
When set, nip up the M10
bolts (Item 7).
Ensure that the U-bolts (Item
3) are vertical. Then nip up
U-bolt nuts (Item 4).
Tighten the Nut Pad bolts
(Item 7) to 30 Nm torque
(quite tight).
Check that U-bolts are still
vertical and then tighten
each nut half a turn at a time
until a tightening torque of 30
Nm is achieved.
Hint: Tighten each leg of U-
bolt evenly so that each leg
has an equal number of
threads showing above each
nut.
Optional: Install End Caps
(Item 10) into the end of
each H-Mount arm.
StrongArm Support Post (if included)
Tools - 19mm Socket or Ring Spanner, 18mm Socket or Ring Spanner
Install the StrongArm support post onto
H-Mount flange.
Insert M12 bolts with flat washer through
flange holes at base of StrongArm
support post.
Insert lock-washer and Nyloc nut onto
underside and retain StrongArm post to
Cross-Mount. Hint: Do not tighten yet.

Bicycle Carrier Main Beam
Lower the bicycle carrier main beam over
the top of the support post and insert the
upper pivot pin.
Rotate the carrier main beam rearwards
until the lower sleeve at the nose of the
carrier rests against the stop pad on the
StrongArm support post.
Insert the lower pivot pin and install the
R-Clips at the end of each pivot pin.
Install the rear wheel support cradles and check clearance to caravan or
camper body. Align and adjust H-Mount position and/or slide StrongArm
support post fore/aft along slots in cross mount.
Once aligned tighten all nuts and bolts.
To pivot the carrier assembly up and
forwards remove the lower pin and insert
into one of the overhead rotation stop
positions. The carrier assembly can then
be lifted and pivoted over to the desired
stop.
Hint: One of the key features of the iSi
bicycle carrier is the ability to easily
remove the rigid vertical support posts
from each post sleeve. The idea is to pull
the vertical posts out as you unload
bicycles in order to have a clear working
field. Insert as you load bicycles back.
When done correctly, it’s 10 seconds per
bicycle regardless of whether the carrier is
on the car or drawbar.
The heart of an extreme duty bicycle carrier drawbar solution is the bolt-on iSi
adjustable H-Mount. An incredibly strong mount that braces the drawbar arms and
spreads the load over a wide area. This eliminates pressure hot spots and is inherently
stronger and more rigid than welded cross-tube solutions. The added benefit
of the adjustable iSi H-Mount is the ability to precisely set the position of
the mount to clear drawbar mounted hardware such as the hand brake,
jockey wheel, weight distribution systems, stone guards and storage
boxes. The ideal solution for operation over the harshest terrain.