Clamping no.3 top water elbow

[Marty_d]

Hey folks, looking for tips and tricks to get the spring clamp on the no. 3 cylinder top coolant elbow.

This bastard is under the carb manifold and there's no room for the spring pliers (bent elbow type) to fit. The electrical box thingy is also in the way.

I don't really want to disassemble the stuff at the top of the engine to get at this - is there an easier way??

 

Thanks,  Marty

[rgmwa]

Swearing made it easier.  If that fails, maybe try the cable operated pliers. 

[facthunter]

Hasn't the clamp screw got the option of a screw slot or a small hex spanner? Make you own thin tube spanner with T handle.  Nev

[rgmwa]

These are spring clamps, Nev.

[facthunter]

 You CAN use others if access is difficult. That type is OEM on a lot of vehicles.  Nev

[Kev]

  On 22/08/2023 at 11:54 PM, Marty_d said:

Hey folks, looking for tips and tricks to get the spring clamp on the no. 3 cylinder top coolant elbow.

This bastard is under the carb manifold and there's no room for the spring pliers (bent elbow type) to fit. The electrical box thingy is also in the way.

I don't really want to disassemble the stuff at the top of the engine to get at this - is there an easier way??

 

Thanks,  Marty

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Hi Marty. The end caps on the pliers can be swapped over, if that helps (just held on with small circlips) also it may help to turn the spring clamp round the other way, although I assume you have tried that. 

[skippydiesel]

The proper tool can be a bit awkward but a pair of flat blade pliers or even better a  modified to suit cheap long nose vice grip, will probably do the job for you.

 

Depending on access/angle  - multi grip wrench may also help.

 

Good luck and let us know what your ultimate solution is 🙃.

Edited August 23, 2023 by skippydiesel

[Thruster88]

One way this and other tricky jobs on aircraft can be done is with lock wire. Open the clamp in a vise, lock wire open, slide into position, cut lock wire. Workes on P clamps as well.

[Blueadventures]

  On 23/08/2023 at 9:08 AM, Thruster88 said:

One way this and other tricky jobs on aircraft can be done is with lock wire. Open the clamp in a vise, lock wire open, slide into position, cut lock wire. Workes on P clamps as well.

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Yep, absolutely agree; works a treat.

[Marty_d]

  On 23/08/2023 at 9:08 AM, Thruster88 said:

One way this and other tricky jobs on aircraft can be done is with lock wire. Open the clamp in a vise, lock wire open, slide into position, cut lock wire. Workes on P clamps as well.

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That's a great idea.  The pliers actually ratchet closed to lock open the spring,  so I'll try that.

[Blueadventures]

  On 23/08/2023 at 1:22 AM, rgmwa said:

Swearing made it easier.  If that fails, maybe try the cable operated pliers. 

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This type? not real dear to buy.

[rgmwa]

Yes, that’s them. Rotax recommend them in their maintenance manual. I almost gave up on that clamp with the standard pliers and was on the point of going to buy a set when I managed to get it installed.

Edited August 23, 2023 by rgmwa

[Marty_d]

Well, I think it's going to be Nev' s solution, another type of clamp for that 1 elbow.

Not sure why Rotax didn't just extend the elbow so you had clear space to put the hose on, everyone has to do this every 5 years so seems like a design flaw to me.

[rgmwa]

Lock wiring and then slipping it on might be worth trying. I’ve done it on Adel clamps but didn’t think of it when I was doing the hoses.

[onetrack]

I couldn't recommend any of those Horusdy tools. They brag their tools are "professional" quality. They're the finest low grade Chinese tool quality.

 

I bought a set of their NPT thread taps, and they look like they were knocked up by the rice paddy planters during their Friday afternoon coffee break.

[facthunter]

That can't be right. They don't GET a coffee break any day.  Nev

[Marty_d]

  On 23/08/2023 at 12:25 PM, rgmwa said:

Lock wiring and then slipping it on might be worth trying. I’ve done it on Adel clamps but didn’t think of it when I was doing the hoses.

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Nope - going to just use a good quality normal hose clamp on that one (bolt style, EFI type if I can get it in that size).  Two evenings wasted on it is enough.

[danny_galaga]

  On 23/08/2023 at 12:15 PM, Marty_d said:

Well, I think it's going to be Nev' s solution, another type of clamp for that 1 elbow.

Not sure why Rotax didn't just extend the elbow so you had clear space to put the hose on, everyone has to do this every 5 years so seems like a design flaw to me.

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From Rotax point of view it's fine- went together easily enough in the factory, what do they care if it's hard for someone else to remove 😄