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T-REV Maintenance Part 2: Full Overhaul with the TERAMOTO Overhaul Kit (BMW G650GS)

Hello everyone.
Today's post is about giving my T-REV a full overhaul.

For the T-REV, the maker recommends
- a check and clean every year or 10,000 km
- a full overhaul every 2 years or 20,000 km.

What I learnt from this maintenance (overhaul) was:

Overhaul it as often as the maker recommends!

For the disassembly, see the article below.

The TERAMOTO T-REV full overhaul kit (part no. 3041, 0.07) that arrived: package and contents

The overhaul kit has arrived!

The parts of the full overhaul kit laid out in a tray (rubber gaskets, metal plates, O-rings, screws)

These are the parts in the overhaul kit.

Carefully fitting a new rubber gasket to the T-REV body the right way round

Let's start fitting the new parts to the T-REV.
First, put the rubber gasket in place.

Carefully fitting the thicker metal plate that holds the rubber gasket down, the right way round

On top of the rubber gasket, put the thicker metal plate that holds it down.

Carefully fitting the new 0.07 mm reed valve to the T-REV body the right way round

Next, put on the 0.07 mm metal plate (the reed), the key part of the T-REV.

Carefully fitting the plate that stops the new 0.07 mm reed from bending back

Fit the plate that (I think) stops the 0.07 mm reed from bending back, and fix it with the screw.

The new reed valve fitted to the T-REV body, lying flat and sealing properly

That's one of the three done.

And then it suddenly struck me!

The old reed valve lifting away from its seat: without maintenance, the T-REV cannot work properly

The photo above was taken when I took it apart (before the overhaul).
The 0.07 mm reed is not sitting flat; it is lifting!
Like this, I don't think the T-REV was working as well as it should.

Feeling that you really should follow the maker's recommendations, I fitted the other two.

Applying silicone grease before fitting the O-ring from the overhaul kit

Next, replace the O-ring.
Apply a thin coat of silicone grease.

Fitting the greased new O-ring from the overhaul kit to the T-REV

Fit the new O-ring.

Screwing the part with the new O-ring into the T-REV body held in the vice

Once the O-ring is done, screw it into the body held in the vice.

Fitting the valve section to the T-REV body held in the vice

Fit the valve section too.
Even in this photo you can see that the thin reeds are sitting flat.

The T-REV after the overhaul

Overhaul finished!

The T-REV refitted to the breather hose on the G650GS

Refit it as before, and the whole job is done!

After the overhaul, the vibration and engine braking went back to how they felt when I first fitted the T-REV.

My T-REV series on the BMW G650GS:

-Custom, G650GS, maintenance