water proofing

[trickydicky]

i went off road the other day when i got back i notised muddy water in my air filter douse anybody know the army spek for water proofing ?

[tack43]

Where has the water come from. Dump valve on air filter? Were you going through deep water? In through air intake? Check hoses for tightness/splits, air filter sealing ring, dump valves on air filter/trunking.
As such the army doesn't do anything different on standard mil landrovers. the mil ones used for wading i.e. the ones the Marines use have a snorkel, extended breathers, some of the elecrical components are mounted high up but thats about it.

[Saffy]

bearing in mind the max wading height for a standard defender (as stipulated by landrover) is only about 500mm - bumper height ish.

[V8MoneyPit]

bearing in mind the max wading height for a standard defender (as stipulated by landrover) is only about 500mm - bumper height ish.

And even then, the axle oil can get contaminated if there are no raised breathers.

[trickydicky]

the water/mud was up to the wind screen. i do have a snorkle but i dont have a lot of faith in the way i fitted it. i have seen videos of the marines driving in the sea up to the top of the wind screen. my i understand all the breather pipes but how about the snorkle back to the air filter and the dump valves. also what happens if the gascet leaks on the cambelt cover (mine is cracked) so is there any point in putting the plug in ? that may just stop it draining if it leaks.also if you block off the dump valve how douse the exess oil or water drain out?

[tack43]

I've heard of people blocking the dump valves but personally I just make sure they're up to scratch. Just changed the air filter valve on mine. If I was you I would get your cover welded up and sealed. Water might be ok but fine mud will wreck your timing belt. Seal all pipe connections with silicone sealant. If you fit the wading plug you will not get so much going in (unless the crack is a big one).

[Landy Andy]

You can check you snork by putting a plastic bag over it while engine ticks over, the engine should stall, if not listen for the air noises.

Hope this helps

Andy

[Saffy]

You can check you snork by putting a plastic bag over it while engine ticks over, the engine should stall, if not listen for the air noises.

Hope this helps

Andy

this test will also cause the crappy 300tdi/td5 push fit wing sections of the standard air intake fittings (if your snorkel uses these i.e not the safari) to collapse due to   the vacuum caused by the bag and tear the lovely bead of silcone one pains-takenly sealed those sections with. Once collapsed the boxy plastic part on the insIde of wing stays collapsed until the snorkel mating flange on the outside is unbolted so you can get hand in and un-poke the stupid plastic moulding back into shape.
I ditched that style of snorkel for a safari type one that replaces the standard fittings with a nice pipe because you just can not trust those push fittings to stay sealed even with silicone applied.

[tack43]

Sounds like good advice. Will have to save my pennies!  :)

[trickydicky]

sounds like good advise to me aswell. the only other problem i have now is nobody makes the rubber seal for the air filter case on a 2.5td anymore does anybody know off anbody who has got any?