Gas Springs, again

[mrkane1952]

Greetings All:

Review of the archives leaves some questions unanswered. For example,
several vendors are described as capable of cross-referencing the
numbers from existing springs on the coach. What numbers? Of the 17
on the interior of my 85 PT40, I don't think any two are numbered the
same. I've found at least these manufacturers markings--"SPD,"
"Spring Lift," "Lift-O-Mat," and "Stabilus." Here are examples:

SPD-GS-5100-20 (Is this a 20 pound unit?)

Spring Lift
<M 3504 MI 0140N 300/99> (This a 140 Newton--30 pounder?)

Lift-O-Mat
(160 Newtons==35 pounder?)

???Anyone have the secret decoder ring for these???

In addition, suggested replacements (in the "database" and "files"
sections) have strengths ranging from 20 to 30 pounds, if I understand
the numbers given. My bin doors range from 26--36 inches in width,
plus the aft panel over the camera which is 48" wide with two springs.
Does one size fit all? If I get stronger replacements am I at risk of
knocking my glasses off each time one is opened?

The exterior bay doors are similar--some appear to be 500 Newton (120
pound) Lift-O-Mat units and some are 90 pound SPDs. ???

A final question: several of the interior bin door latches are
failing. I can find no manufacturers mark. What are these named? Is
there a suggested source?

Thanks--

M.R.Kane
1985 PT40

[Gardner Yeaw]

M.R.
I got springs from ORR&ORR. I ordered the 35# units but found
they were overkill, I got some 20# units and they work great on the
shorter overheads. I had fastened a booster amp for the stereo on
one of the doors, and the 35# was a perfect size.

Measure your springs retracted and extended. then look for a good
fit on the ORR&ORR site. They are great to do business with. Also,
the prices on the web are higher than the actual price you will pay.
Contact them and get a price, you will be pleased.

I also got some for the outside doors. I found the 45# units were
good for the long door on the left rear of my '78FC. I originaly got
65# units, again way too powerful. It was hard to open the door, and
stressed the hinges when open.

On my last order they inadvertently sent two incorrect springs.
When I sent an e-mail they sent the correct ones and said to just
keep the others. Real good customer service.

Gardner
78FC33



--- In WanderlodgeForum@yahoogroups.com, "mrkane1952" <mrkane@...>
wrote:
>
> Greetings All:
>
> Review of the archives leaves some questions unanswered. For
example,
> several vendors are described as capable of cross-referencing the
> numbers from existing springs on the coach. What numbers? Of the
17
> on the interior of my 85 PT40, I don't think any two are numbered
the
> same. I've found at least these manufacturers markings--"SPD,"
> "Spring Lift," "Lift-O-Mat," and "Stabilus." Here are examples:
>
> SPD-GS-5100-20 (Is this a 20 pound unit?)
>
> Spring Lift
> <M 3504 MI 0140N 300/99> (This a 140 Newton--30 pounder?)
>
> Lift-O-Mat
> (160 Newtons==35 pounder?)
>
> ???Anyone have the secret decoder ring for these???
>
> In addition, suggested replacements (in the "database" and "files"
> sections) have strengths ranging from 20 to 30 pounds, if I
understand
> the numbers given. My bin doors range from 26--36 inches in width,
> plus the aft panel over the camera which is 48" wide with two
springs.
> Does one size fit all? If I get stronger replacements am I at
risk of
> knocking my glasses off each time one is opened?
>
> The exterior bay doors are similar--some appear to be 500 Newton
(120
> pound) Lift-O-Mat units and some are 90 pound SPDs. ???
>
> A final question: several of the interior bin door latches are
> failing. I can find no manufacturers mark. What are these
named? Is
> there a suggested source?
>
> Thanks--
>
> M.R.Kane
> 1985 PT40
>