Question about Nikon 20-35mm f/2.8 R-UW AF Zoom Nikkor Lens for Nikonos RS

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The M-A ring is cracked. It can still be used in M and A mode, but the ring has to be rotated more gently now. Is there a way to repair the crack? I haven't seen spare parts anywhere to buy.

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  • Timothy Lusk
    Timothy Lusk Oct 24, 2013

    Could an adhesive like superglue or epoxy work to secure the ring and allow it to function normally?



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  • Nikon Master
  • 6,702 Answers

Did you try ifixit? they do have free repair video's, free repair manuals and for lots of things they also do have spare parts.

Posted on Nov 06, 2013

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1 Answer

Can the glass of a whirlpool cerano hob suddenly crack?

You didn't need 'red hot' to simmer. When you got it red hot, and then put the pan on it, the pan sucked the heat out of the ring to fast, and caused stress in the glass causing it to crack. Tops are meant to be used the way you used it. Your fault I am afraid.

The top can be replaced.

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How do I replace the screen for this exact phone. There was a crack that appeared and now below the crack will not respond while above the crack works just fine.

You can purchase a screen repair kit from Ebay or Amazon for that phone. Replacing it is kinda scary if you have never done it before but trust me it is no big deal. You simply use small screw driver to pry up the broken screen and gently remove the old broken one. Use the kit to replace it. Good Luck!

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Applied brakes pulsate. front pads and rotors are good. rear brake pads are fair and rotors

If ABS is activating for no apparent reason then the most common causes are failed ABS wheel sensors or more commonly, cracked reluctor rings.

You won't usually see the crack in a reluctor ring, but it opens up when it rotates at running speeds. You can also get it to show with a simple fluorescent dye crack testing kit (not cheap to buy for a one-off job, but any decent garage or engineering workshop will have a kit to hand).

Unfortunately, reluctor rings are expensive as they usually come as an integral part of the driveshaft or hub assembly. Third party versions may be available and are less expensive (still a painful price though) but to fit them they must be heated until cherry red and then dropped into position. Get it wrong and you have to cut off your new and expensive ring and start again. Not really a DIY job unless you're very confident and experienced.

If the crack test proves negative, then ABS sensors are easy to fit and can be tested by swapping around to see if you can move the fault from one wheel to another or even from the front to the rear. Sensors are relatively cheap, but failures are far less common than with reluctor rings.

Fingers crossed for you that it's the easy/cheap fix.

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2 Answers

My Gmc Yukon xl brakes are pulsating when you press the brake. No brake lights are on. I have already replaced rotors and pads and it is still doing it.

The pulsating is due to your ABS (Anti-lock Braking System) activating prematurely. Most of the time this is due to one or more cracked reluctor rings: it's one of the most common problems with ABS.

The cracks are usually invisible and only open up when under rotational loading, but any decent engineering workshop or repair garage will have a fluorescent dye testing kit which will quickly reveal any cracks. If there are none, then the fault is likely a failed sensor or corrosion in the connector plug. A few basic diagnostic tests will rapidly identify a faulty plug (pull apart and check!) but more sophisticated equipment is needed to check the sensor function and may be inconclusive if the fault is intermittent.

What follows is generic to the vast majority of ABS-equipped vehicles; I cannot give specifics for a GMC Yukon as they're as rare as bird's teeth on my side of the Atlantic:-

If the reluctors have cracked then they must be replaced as repair is not possible; unfortunately it's not cheap as they frequently come as part of a complete outer drive shaft assembly. But there are plenty of third-party suppliers who supply the rings alone. Removing the old ring usually just involves cutting the old one off with a cold chisel and thoroughly cleaning up the seating surface. To fit them is only for experienced and confident repairers as they must be heated until cherry red and then positioned onto the drive shaft correctly before they cool and shrink tightly into place. Get it wrong and the new ring must be cut off and replaced.

I hope that my reply has been of assistance and helps you to rapidly fix your vehicle. Please take a moment to rate my answer in return.

Mar 20, 2010 | 2003 GMC Yukon XL

1 Answer

Abs engages even when on dry pavement. Happens more often on slight downhill and lower speeds. I have changed the sensors but it hasn't helped. Is there an adjustment?

No adjustment is possible. Although you changed the sensors, did you thoroughly check the reluctor rings?

One of the commonest ABS faults is cracked or corroded reluctor rings and they produce the symptoms which you have described. The cracks are frequently invisible to the naked eye and only open up when under rotational loading so they need testing using dyes specially designed for the purpose. Click here if you don't know about these. I'm not suggesting that you purchase a kit: any decent repair garage will routinely have these as will all good professional engineering workshops and for a small charge they can test for you.

Cracked reluctor rings cannot be repaired:they must be replaced and usually aren't cheap. Some are only supplied as part of a new driveshaft/hub assembly, but there are plenty of independent third party suppliers who will supply the rings alone. To fit them you cold chisel off the old ones and thoroughly clean the mounting area and then heat up the new ones until cherry red before slipping them onto the shaft. As they cool, they shrink to fit. If you get it wrong, you have to chisel it off and start again so it's only to be tackled if you are confident in your automotive repair skills.

Mar 19, 2010 | 2004 Mazda Tribute

1 Answer

How can i put on the snap ring on an eloctolux vacuum hose on the end piece of the hose; it is a swivel end and an older vacuum cleaner plastic canister type

The snap ring is generally found on a Canadian made LUX AP series prior to 1982 and it is in fact a coil spring you must leave the wiring off the handle. Be sure the steel cap and rubber o ring are on the tip of the hose. Slide the handle onto the hose with the hose tip facing upright. then with a small flat screwdriver separate the hooked tip of the spring from its body and run your screwdriver around the spring,feeding it into the groove inside the hose handle, spiraling as you go. similar to how you would feed a key onto a key ring. Before inserting the wire cover try to swivel thew handle it should rotate smoothly. Be very gentle inserting the wire cover pin as it will crack the handle. Use gentle pressure with pliers to start it , then squeeze it into place with your plier jaws fully open.
Post back to advise how you have made out

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LG Tromm dryer has a crack in the drum. Can this be self repaired and if so how?

I'm a mechanical engineer and improvised a repair as follows: rotated drum so that the weld crack was not displaced; roughened surfaces and fitted a small Stanley steel mending plate across crack (shaped plate to match inside drum surface); used PC brand "Fahrenheit" high-temp epoxy putty to bed the plate in place; covered the repair with another thin epoxy layer to provide a smooth surface which would not catch on clothes; further smoothed repair with quick wipe of solvent; most likely a temp fix but working well so far (1 month).

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Breville esp6 replaced silicone ring but continues to leak around this area .feels tight when coffee basket rotated,but when turned on it goes everywhere...please help!Aaron.

You may have a broken silicone seal, or a cracked filter ring. You can see an example of the small cracks on the ring on a photo at this website: , just under the screw hole in the top corner.

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1 Answer

Right side of screen has moved

If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Also the following solutions worked for a very different set, take this into consideration. 2 things might have an effect on this: there are metal ring on the back of the CRT, rotating these can get the desired effect. These rings are usually glued together and they move the image diagonally. By adjusting the two diagonals one can achieve the desired position. The rings will need to move seperately in order to adjust them so the dab of paint that glues them together will need to be cracked (this usually can be accomplished by just rotating the rings but sometimes they will have to be gently pried apart). Let me repeat this is a very dangerous adjustment as it is immpossible to do with the machine off and the tabs on the rings are within mm of 9k volts. The preferred method is to rotate the rings with a non conductive probe (laymen call these unsharpenned pencils or plastic pen barrrels). There's also an adjustment on the yoke of the CRT, just in front of the small video board that plugs into the back of the CRT. If you look closely there should be a small lever/arm that you can move. As you move this, the alignment of your CRT video should also move right/left. Since this area is right in the middle of some high voltage and has to be done with the system/CRT on . Take care

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