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Delivery valve hitachi compressor
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Ormond
 


Member Since: 09 Feb 2024
Location: Cumbria
Posts: 2

United Kingdom 
Delivery valve hitachi compressor

Evening, I’m new to the forum but have been following for a few weeks now, a lot of helpful information. I’m currently rebuilding my compressor , hitachi one….I tried to get into the delivery valve to check it and replace it most likely. When I tried to undo the nut, it turned about a third of a turn and went tight, then wouldn’t tighten up either. Any tips how to get it undone so I can replace it. Thanks  
Post #23615489th Feb 2024 10:35 pm
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Ormond
 


Member Since: 09 Feb 2024
Location: Cumbria
Posts: 2

United Kingdom 

Update…common issue, needed drilled out and re tapped to clean the threads, new delivery valve assembly installed.  
Post #236243919th Feb 2024 5:16 pm
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reb78
 


Member Since: 21 Apr 2018
Location: Herts
Posts: 222

United Kingdom 2007 Discovery 3 TDV6 GS Auto Baltic BlueDiscovery 3

Sorry - too late to this now as you have resolved but I have just rebuilt my Hitachi compressor too.

I had a few bits go like this and what I found worked was to turn gently, add some penetrating fluid, gently turn back and forth adding more fluid as appropriate and eventually it would turn more and more until you could get a full turn and release the fitting completely. It worked for me - key thing was to avoid what i would normally do and wrench it round and rip the threads!  
Post #236278523rd Feb 2024 6:20 pm
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RemiW
 


Member Since: 08 Oct 2013
Location: Toronto
Posts: 2

2006 LR3 4.4 V8 HSE Auto Stornoway GreyLR3

Ormond wrote:
Update…common issue, needed drilled out and re tapped to clean the threads, new delivery valve assembly installed.


What is the tap size?  
Post #237201028th Jun 2024 1:57 am
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