Swivel Hose Service Bulletin 24.9.13

Issue:Some units report a spray of water at hose connection point.

Cause: Hose diameter 2mm larger than specification, at Tri-Clamp connection there is a small excess of hose between one pair of the clamps. We sealed this with a round rubber stock and silicone prior to clamping.  This solution did not fully resolve the water sealing.  Strength of the connection is not affected.  The Tri-Clamps are clamping the hose, just not 100% sealing the water with the larger spec hose.

Solution: Install Band Clamp under Tri-Clamps to seal.

x-jetpacks water jet packs

The x mark shows the location of the excess bump of hose between the clamps.

x-jetpacks water jet packs

The round rubber rod shows here at the edge. The rubber is embedded in silicone in this section.

x-jetpacks water jet packs

Option one is to pull out the round rubber rod before installation of the band clamp. The can be done with pliers. Loosen the bolts on the Tri-Clamp first.

x-jetpacks water jet packs

This shows the location of the original Tri-Clamp installation, approximately 5-8mm below the edge of the swivel bearing step.

x-jetpacks water jet packs

Move the clamps upward until 1mm (approx) from the step, nearly touching. For a complete fresh install, the tri-clamp can be slid back, hose pulled off, a band clamp put onto the hose, Tri-Clamps after and 10 CM cut from the end of the hose. Re-insert the swivel into the hose and position the clamps as shown below.

x-jetpacks water jet packs

Showing the band clamp (104mm size) installed under the Tri-Clamp.

x-jetpacks water jet packs

Tighten all bolts on Tri-Clamps and after band clamp.  At full tightness there is approximately 2.8mm between each set of tri-clamps.  Distance is not critical, bolts are very tight.  Anti Seize compound is used to prevent the bolts from seizing on the nuts when tight (locking the metals together).

x-jetpacks water jet packs

Install thread protector or set of lock nuts on end of thread to prevent catching user when moving jetpack on land or rolling up hose.

Repeat for U connection at other end.  The other end is in the water and less obvious if small leak of water under pressure.