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Randy Roberson
Grand Master
Username: wascator

Post Number: 386
Registered: 5-2009
Posted on Tuesday, 19 May, 2015 - 11:00 pm:   Edit PostDelete PostView Post/Check IP

Working on Her (LRF 30305) refrigeration system and the hose from the POV to the compressor suction is dodgy so listed for replacement. There are some strange-looking threads on the hard pipes either end: very fine, and a long taper. What is this?
This Car has a fuel cooler on the compressor end of this hose, which is not shown in any of the parts lists I have access to. The hose has a tag on it with a Roll-Royce parts number (forgot to write it down but it's UD 21XXX) not shown on the diagrams or parts listings. Hummnnn.
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Brian Vogel
Grand Master
Username: guyslp

Post Number: 1307
Registered: 6-2009
Posted on Tuesday, 19 May, 2015 - 11:31 pm:   Edit PostDelete PostView Post/Check IP

Randy,

The fuel cooler stuff is in chapter B4 of the spare parts manual, starting on PDF pg 18. Here's a screen capture, but you can get it from the technical library.

fuel cooler

My UK spec SS-II doesn't have this but my US spec SW-II does.

Brian
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Randy Roberson
Grand Master
Username: wascator

Post Number: 387
Registered: 5-2009
Posted on Wednesday, 20 May, 2015 - 01:41 am:   Edit PostDelete PostView Post/Check IP

Thanks.I did not look enough.
I learned that the fittings in question are known as SAE 100R5 reusable fittings. They use a certain style of hose made for this fitting by several manufacturers to this SAE standard, and there are different hose materials: hydraulic, air, etc, and of course refrigerant. The hose slips into the fitting (no crimping; hence reusable) and the hose is captured when the fittings are tightened. One source for information: Aeroquip Eaton's web site. Assuming I can find some hose, this is easier than I expected.
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Randy Roberson
Grand Master
Username: wascator

Post Number: 389
Registered: 5-2009
Posted on Thursday, 21 May, 2015 - 10:55 am:   Edit PostDelete PostView Post/Check IP

Additionally, my Car's fittings have a corporate symbol of identification, in the form of a stylized S; does anyone know the manufacturer? There is a name on my hose, but it is too faded to read. Maybe Stre....
Anyway, I have some #12 5/8 inch ID hose ordered, less than $20 US for three feet, including shipping. I saw this hose offered somewhere for $600.
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Brian Vogel
Grand Master
Username: guyslp

Post Number: 1310
Registered: 6-2009
Posted on Thursday, 21 May, 2015 - 11:19 am:   Edit PostDelete PostView Post/Check IP

Randy,

It is shocking to me how many parts, and fairly common parts, have prices that simply cannot be justified. When you can have these things made one-off, and very often you can, for far less than buying "off the shelf" something is very wrong.

One of the reasons (and there are plenty of others, too) that these cars suffer from lack of maintenance is because an A/C hose is being offered for $600 and collections of a few O-rings go for $50 or more.

This isn't limited to cars from Crewe, of course, but it seems to be far more common for "run of the mill" parts for our cars.

If you'd like, I can try to find that hose on my Silver Wraith II. Let me know which one it is, specifically, and I'll check it out.

Brian
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Randy Roberson
Grand Master
Username: wascator

Post Number: 391
Registered: 5-2009
Posted on Friday, 22 May, 2015 - 10:37 am:   Edit PostDelete PostView Post/Check IP

It's the compressor suction hose from the POV beside the brake reservoir to the front, refrigerant inlet to the fuel cooler. The larger diameter hose.
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Brian Vogel
Grand Master
Username: guyslp

Post Number: 1313
Registered: 6-2009
Posted on Friday, 22 May, 2015 - 11:40 am:   Edit PostDelete PostView Post/Check IP

I'll try to get a closer look once the sun rises tomorrow.
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Brian Vogel
Grand Master
Username: guyslp

Post Number: 1315
Registered: 6-2009
Posted on Saturday, 23 May, 2015 - 03:31 am:   Edit PostDelete PostView Post/Check IP

Randy,

Based on your description, this is it:

hose

The picture lets you see the markings pretty well, but I'll repeat them here:

Stratoflex 255-12 4D 6C FREON12-ID 5/8

Brian
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Bob UK
Unregistered guest
Posted From: 188.29.164.224
Posted on Saturday, 23 May, 2015 - 08:19 am:   Edit PostDelete PostView Post/Check IP

A thread and pipe workshop should be able to make a new pipe up for less than $100.

(Message approved by david_gore)
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Mark Aldridge
Prolific User
Username: mark_aldridge

Post Number: 210
Registered: 10-2008
Posted on Saturday, 23 May, 2015 - 09:10 am:   Edit PostDelete PostView Post/Check IP

Brian, I notice the pipe is freon12, are you still using R12 or have you had to update the gas. If so , does the R12 pipe cause any problems ?
Mark
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Brian Vogel
Grand Master
Username: guyslp

Post Number: 1316
Registered: 6-2009
Posted on Saturday, 23 May, 2015 - 09:18 am:   Edit PostDelete PostView Post/Check IP

Mark,

My SW-II has less than 30K on it and was in storage for at least 5 years prior to my purchasing it and beginning its "revival from the dead" in 2012. The climate control system, along with well over 95% of what's in/on the car, is original.

It's still got an R12 system and that system was working when checked before the car's latest "suspended animation" when life started throwing a lot of issues at me that take precedence over working on it.

Brian
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Randy Roberson
Grand Master
Username: wascator

Post Number: 394
Registered: 5-2009
Posted on Saturday, 23 May, 2015 - 10:49 am:   Edit PostDelete PostView Post/Check IP

YES That's it exactly! Thanks a bunch.
Stratoflex also made those fittings. They are called 'reusable' because they simply screw onto the hose. when you tighten it up everything grips and seals.
My $17 for three feet hose came today; looks almost exactly like the old hose. After all it is all made to a certain standard specification of dimensions, etc. so it should work. Plus it's barrier hose rated for R134-A whereas the old hose was not.
I also ordered a receiver-drier today, for less than $20. It is about 1 inch shorter than the original, but the fittings and function should be the same. I will let you all know how it works out. It is a Four Seasons #36215
UPDATE: Stratoflex is in business, division of Parker. This from the website:
"The Stratoflex Products Division designs and manufactures rubber hose assemblies for aerospace and derivative markets. Our rubber hose products are available for low-, medium-, and high-pressure applications."
Some extra high quality fittings for our Cars, seems.
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Jan Forrest
Grand Master
Username: got_one

Post Number: 798
Registered: 1-2008
Posted on Saturday, 23 May, 2015 - 09:12 pm:   Edit PostDelete PostView Post/Check IP

I'm not sure if this applies to the international market, but in the UK the British Oxygen Company (BOC) is collecting and recycling R12 for use in systems that would be uneconomical to 'upgrade' to the (allegedly) less toxic modern variants. How, or even if, you can get hold of some of it I couldn't say, but few refrigeration specialists seem to not be aware of it.
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Randy Roberson
Grand Master
Username: wascator

Post Number: 401
Registered: 5-2009
Posted on Wednesday, 27 May, 2015 - 08:34 am:   Edit PostDelete PostView Post/Check IP

Got the Four Seasons #33215 receiver-drier today; $15 plus tax at NAPA. This is the same one I used on the 1970 Shadow SRH 9391.
Looking through catalogs, there must be hundreds of these things; there is one which has the exact dimensions (diameter and height) as the original, but it has a different fitting for the inlet and outlet ports.
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bob of dorset
Unregistered guest
Posted From: 188.29.164.117
Posted on Wednesday, 27 May, 2015 - 09:48 am:   Edit PostDelete PostView Post/Check IP

Barrier hoses are much better than original.

If changing to 134 then I would do both hoses. R12 and R12 oil will have soaked into the hose a bit.

There is a flushing agent availble which should be used when going from R12 to another R gas.

This can be done diy but I suggest do all the fitting then take car to shop to finish off with proper vacuum etc etc and flushing equipment. It's not expensive.

(Message approved by david_gore)

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