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Plan your work and work your plan

coopab

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That's exactly what I didn't do when I started my water pump replacement job. (Fan Clutch Removal 4.0 thread).

I'm doing head gaskets, intake manifold gaskets, valve seals, timing chain and guides, but before I can do most of this I need to evacuate the R134 from the A/C.
I read on a Nissan forum a DIY recovery method using empty R134 cans to capture the refrigerant, and using dry ice and isopropyl alcohol to cool the cans so that the refrigerant would flow from the A/C system into the cans. Care must be taken not to capture more than 12 oz. per can (or whatever the capacity of the can is to begin with. Has anyone had experience with this method?
Otherwise it seems the motor must be running to do the R134 recovery. I'll need to install the water pump so I can run the engine. From what I've read when I get to the timing chain part of the job I will be able to leave the water pump attached to the front engine cover, so that won't be so bad, but I wish I had waited and done the water pump at the very end on the project.

coopab
 


NIPs

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Go to a shop if u can and ask if they can just do a recovery, they shouldn't charge u but if u do it might $20

Sent from my ME173X using Tapatalk
 

coopab

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Automatic
Go to a shop if u can and ask if they can just do a recovery, they shouldn't charge u but if u do it might $20

Sent from my ME173X using Tapatalk
Thanks for the suggestion. I put the new water pump on today and had a local garage recover what little R134 was in the system. Now I can move forward with all the other repairs I've got planned.

EDIT: Now that I can proceed ahead with my projects, should I start by doing the timing chain, guides, and front cover gasket?
After that I'll be replacing head gaskets, intake manifold gaskets, valve guide seals, etc.

Or should I do the topside work while I have the front engine cover open?
 
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