Correct,
The repair kit that the number I provided gives a gasket for under the nut as well as a cap that threads over the top of the nut to seal what will creep up the threads.
The box is under some pressure, basically the return pressure back to the reservoir.


Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.