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Alright guys, what's the secret?

Author Topic: Alright guys, what's the secret?  (Read 5834 times)

thysonsacclaim

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Re: Alright guys, what's the secret?
« Reply #15 on: 19 February 2011, 03:34 AM »
Yes, I'm going to finish tackling it today when the sun comes out. The problem I'm having is with access. The rear two bracket bolts required a universal joint. No problem, except my u-joint are floppy so it had to be taped to make it moveable yet not flop out of position when removing the bolts.

The rear hex bolt is inaccessible with a ratchet as far as I can tell. My hex keys also seem to be too small to fit back there and my gosh... who the hell wants to sit there and do 1/8th of a turn, reposition, 1/8th of a turn, reposition.  :D

Edit:
Photos available to whoever would need them.
« Last Edit: 19 February 2011, 04:50 AM by thysonsacclaim »
Adam


Fortasse
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Morbid Rodz
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http://www.morbid-rodz.com


1974 450SE, Ikon Gold, Tan interior

koan

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Re: Alright guys, what's the secret?
« Reply #16 on: 19 February 2011, 04:42 AM »
Adam, I did a quick and dirty scan of five pages and emailed you them because I was under the impression you wanted them quickly.

If it was my intention to make them available to all I would have done a better scanning job (higher res and gamma corrected so the pictures would have more detail in the dark areas) and posted them in the galley mechanical section so anyone interested could take a look (and those not interested didn't waste bandwidth downloading them). The scans were not high resolution to begin with and including them in a post reduces them further to barely readable.

Maybe ask next time.

koan
Boogity, Boogity, Boogity, Amen!

thysonsacclaim

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Re: Alright guys, what's the secret?
« Reply #17 on: 19 February 2011, 05:08 AM »
Koan,

The pics were fine for my purposes (quality-wise etc). I was interested in sharing them should the topic arise at another point (to save some time in the future, redundant topics, inqueries etc). The pages more clearly define the process, whereas my handbooks and others like it have no pictures and little detail in them.

I did print them directly after I got them and went under the car to continue where I left off--which is about what I'm going to finish.

I've removed them from the previous post and sorry if you felt I infringed on something by not asking, as that was certainly not my intention  ???
« Last Edit: 19 February 2011, 05:12 AM by thysonsacclaim »
Adam


Fortasse
[Personal Ramblings]
http://www.fortasse.com

Morbid Rodz
[My Brother]
http://www.morbid-rodz.com


1974 450SE, Ikon Gold, Tan interior

W116-280SEL

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Re: Alright guys, what's the secret?
« Reply #18 on: 19 February 2011, 08:51 PM »

As my aircon hasn't worked for quite some time I've sort of learned to live without it. I don't spend long periods sitting in peak hour traffic or anything like that, so it's not that big a trial. I'm usually doing relatively short trips (maybe 40 minutes max) A-to-B with the window open.

So that's why repairing aircon is down my to-do list a bit, and I haven't got down to that yet.

However when I spotted this thread I contacted Koan regarding his offer to scan some pages from a manual. But as it turns out his is a 450 V8 and mine is a 1978 280SEL.

I'm not keen to get into auto air-conditioning in general and I won't be attempting the aircon repairs myself, but...

I was wondering if it might save me money if I removed all the aircon parts myself and handed them to a serviceman for testing and a quote to repair. Maybe I could even reassemble it all afterwards.

Does that sound reasonable for someone with not a lot of automotive repair experience -- but willing to have a go?

WGB

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Re: Alright guys, what's the secret?
« Reply #19 on: 19 February 2011, 09:20 PM »
My knowledge of the 280 system is that it uses a York Compressor whereas the V8's use a Frigidaire A6 and the condensor in front of the radiator is smaller than the V8 one.

The smaller condensor is an issue if you change to H134a which you will presumably be required to do and small cheap modern rotary compressors are more efficient unless you want to stick with the originality..

I would suggest if you go ahead in the future that you consult an experienced professional with some knowledge of old M-B's as you will also need hosework aa well as new receiver-drier and other parts.

If you try and do some of the work yourself it may save some cost but professionals know what they are doing and if you have to go back because you have not done something correctly it will add to the cost

My 450 cost $1600 with a new A6 about 5 years ago and my 6.9 $2,200 - 3 years ago, also with a new A6.

Bill

thysonsacclaim

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Re: Alright guys, what's the secret?
« Reply #20 on: 19 February 2011, 09:34 PM »
As far as if you think it's a large task, in my opinion, it's going to depend on:

1: Comfort / confidence level in yourself
2: Willingness to make mistakes (which may cost $$$)
3: Ability to set aside large blocks of time to devote yourself to it since you're learning as you go
4: Can you source parts
5: Is your investment in time worth it (ie if youre really busy you're better off paying a pro)
6: Do you want a challenge

I personally like taking (calculated) risks, but I'm also learning and sometimes pressed for time. Any time you learn something, it will usually take longer the first go. I've spent weeks on the top end of my engine to research, carefully dismantle and solicit help when I get stumped. For a lot of the guys here, what I'm doing may take a day or a weekend.

If you can invest the time to learn, you can do it. Just make sure you find good resources (plenty of them here).


As far as dismantling and sending to a expert... well... it depends. Many shops will reduce your bill if there's less labor involved. But, on the other hand they may not want to take a risk on working on something you're putting in. They can't guarantee it'll work, so they may not want to take the job. Lots of chain shops in the US are like this due to liability issues.

The A/C system itself is relatively simple, but you need to be cautious because you're dealing with a pressurized system. You can train for MVAC/HVAC certification in the USA relatively easy. Take a test on laws and proper procedures and you're set. This isn't necesary, but I did do it since it only cost about $35 IIRC. Sorry, forgot you're in Oz--your laws are quite a bit different in some instances  :D

There is a difference between knowing the ideas (ie what the textbooks / manuals say) and what will happen wen you're actually doing the procedure. I find there's always a thing or two you don't learn in the book that you find only through experience. That's partly why we have experts... they've been there, done that and know the quirks and ins and outs.

I think you should carefully consider whether you think you should undertake this job yourself. Read up what others have done and their experiences. You'll likely need tools and equipment you don't have right now.

When it comes down to it, it's all up to you. Just be careful and thoughtful in your approach and don't bite off more than you can chew ... it may cost you more in the end.


Sorry for the longwinded reply, but that's just my take on it.
« Last Edit: 19 February 2011, 10:36 PM by thysonsacclaim »
Adam


Fortasse
[Personal Ramblings]
http://www.fortasse.com

Morbid Rodz
[My Brother]
http://www.morbid-rodz.com


1974 450SE, Ikon Gold, Tan interior

koan

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Re: Alright guys, what's the secret?
« Reply #21 on: 20 February 2011, 12:52 PM »
However when I spotted this thread I contacted Koan regarding his offer to scan some pages from a manual. But as it turns out his is a 450 V8 and mine is a 1978 280SEL.

My book covers 450s but I don't think pulling bits off for testing is the way to go.

You can't do the easy fix with HC refrigerant as QLD doesn't allow it.

Quote
Does that sound reasonable for someone with not a lot of automotive repair experience -- but willing to have a go?

No, take it somewhere for a quote.

koan
Boogity, Boogity, Boogity, Amen!

oscar

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Re: Alright guys, what's the secret?
« Reply #22 on: 20 February 2011, 02:46 PM »
The york compressor is much much easier to remove than the A6 on a 350 or 450, however, I'd tend to agree with taking it to an auto electrician first.  If it's not working purely because there's no gas left, you could go and just get it regassed for a couple hundred but it's not going to solve why there was no gas in there and a good auto electrician will advise against just a top up.  At the least they will recommend charging the system with a dye to determine where the leak/s are and advise to fix them first.  Then depending on how the system shapes up you'll be looking at the added expense of replacing other parts.  A reciever/drier should be on the list as a service item and then you might be looking at some hoses depending on integrity.  I've spent roughly $500 on DIY fixing my aircon by buying gas, compressor oil, service manifold, 2nd hand compressor.  I saved on a hose from a wreck but still, all that work and frustration and my a/c isn't working.  I still need a new compressor or could reseal an old one for much less but if I were you W116-280SEL, I'd take it in somewhere to get your system assessed first.
1973 350SE, my first & fave

W116-280SEL

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Re: Alright guys, what's the secret?
« Reply #23 on: 20 February 2011, 03:07 PM »
OK, I'm convinced.

Workshop assessment & quote it is.

Thanks guys.