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Discussion Starter #1
Got big air leak behind dash on 1300L ex military not air gauges or diff locks, have mobility problems so need help to pin point WHERE it may be from cant feel air escaping when pull dash panel back so assume must be lower down, would have thought it would be easy to find with the amount of air escaping,any help to trace and rectify would be very very appreciated, especially how to access it.
Many thanks Jeff
 

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Unimog Moderator
250GD Wolf
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13,106 Posts
Did you look under the hood? The firewall brake valves can leak a great deal of air. There's a dump hose on the bottom, you can check that pretty easily.
 

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'91 427.110 '02 405.230
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What are the symptoms of mobility problems?
If brake related, Trev is right, it's foot brake valve.
 

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Unimog Moderator
250GD Wolf
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Also of note, if it turns out to be the foot brake valve, Atkinson Vos was 1/7th the cost of Mercedes for the exact same part, should you need a replacement.
 

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'91 427.110 '02 405.230
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3,371 Posts
Also of note, if it turns out to be the foot brake valve, Atkinson Vos was 1/7th the cost of Mercedes for the exact same part, should you need a replacement.
No way! I'd buy two in that case
 

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Discussion Starter #7
Here's another question, transfer box output oil seal to front prop leaking is it a difficult task to replace, dreading answer!!
 

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1987 1250L Doka
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196 Posts
Easy way to check the brake valve is to fit a small party balloon over the dump hose. Inflating = leaking.
 
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