Diff breathers

[Robt]

I bought a
Tube Colour: Blue

1. 
2. 

Diff Breather Kit 4 point for INEOS Grenadier. I am after pic or suggestions where to mount it in the engine bay of my diesel Trialmaster. Thanks​

 

[TheDocAUS]

I bought a
Tube Colour: Blue

1. 
2. 

Diff Breather Kit 4 point for INEOS Grenadier. I am after pic or suggestions where to mount it in the engine bay of my diesel Trialmaster. Thanks​

My bracket is mounted between the airbox and the fender, but @DenisM makes some good points here:

Post in thread 'Diff breathers'

Nov 3, 2025

FWIW: I installed the breather bracket on the LHS of the engine bay. It's "sandwiched" between the mudguard and body panels using the exising fasteners.
I added a generous length of hd heat shrink tubing over each breather /air-line connection to preclude mud/sand etc, and then lengths of split-seam conduit for protection on exposed sections. The air-lines are thus routed well away from any potential heat sources ...

• DenisM

• 

Post in thread 'Diff breathers'

Nov 2, 2025

My OEM diff breather values were replaced last week (I had a diff breather kit installed). Even though I have not done water crossings or mud work, the OEM valves were beginning to clog up. GrenX confirmed they have seen this issue before and believe it is causing some of the oil leakages in the diff when the valve clogs up and pressure builds.

I now have a diff breather kit fitted, but if I had the OEM valves I would routinely check they are not clogged up. Simply press them a few times to make sure they are not clogged.

Rohan also mentioned the fitted diff breather hoses were close...

• TheDocAUS

• 

 

[DenisM]

a picture worth a thousand words
Only 2 positions have been used. The third I'd intended for either the transmission or the transfer case... at least being there I won't forget the "safe place" where other bits and pieces are sitting (somewhere)

 

[Greasemonkey]

I used the same spot in the engine compartment for my breather kit. The related parts are from compressed air technology. The bracket is made of 50x50x3 mm aluminum and uses the existing fender screws. The 4-way air distributor can be easily removed, and each individual line can be blown out with compressed air.
The ZF transmission is currently not connected because I cannot access the connections on the transmission. To get there, you have to remove the front driveshaft.

 

[Tom109]

 

[Greasemonkey]

If you place the breathers for the differentials on one side and the breathers for the gearboxes on the other side, this location is even better than my solution , provided you use plastic tubing.

 

[Grumpy]

I used the same spot in the engine compartment for my breather kit. The related parts are from compressed air technology. The bracket is made of 50x50x3 mm aluminum and uses the existing fender screws. The 4-way air distributor can be easily removed, and each individual line can be blown out with compressed air.
The ZF transmission is currently not connected because I cannot access the connections on the transmission. To get there, you have to remove the front driveshaft.

Did you ever get around to connecting the transmission?
Im planning on doing the diffs but after a quick look into the tunnel the tranny breathrr wasnt very obvious so any pointers/ photos would be of great help.

Removing the front driveshaft doesnt sound as easy as tge front and rear diffs.

G.

 

[ECrider]

Did you ever get around to connecting the transmission?
Im planning on doing the diffs but after a quick look into the tunnel the tranny breathrr wasnt very obvious so any pointers/ photos would be of great help.

Removing the front driveshaft doesnt sound as easy as tge front and rear diffs.

G.

if you wait long enough it removes itself!

 

[Greasemonkey]

So far, I've only connected the differentials and the transfer case. I'm waiting to connect it to the ZF transmission until my front driveshaft fails and needs to be removed. Accessing the breather is difficult without removing the front driveshaft. The transmission pictures show where the breathers are located. Both the standard transmission breathers and the diesel tank breather are identical. The transmission breathers are located at the rear of the engine. They can only be accessed by removing the body panel below the windshield wipers.

 

[ORSO]

ps: a curiosity regarding the drive shaft: did you lift the grenadier?

 

[Greasemonkey]

No, it is all standard.