拆HEQ5

http://www.astronomyforum.net/telescope-mounts-forum/92624-eq5-heq5-eq6-pro-telescope-mount-modifications-hyper-tuning.html

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Remove the silver Phillips screw in the declination lock lever.	Remove the lock lever. You may need to prise this up by using the tip of a flat bladed screwdriver and gently twisting the tip.	Remove the brass declination lock bolt. You may need to use a small spanner or pliers to loosen it.

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Remove the small 'button' if this didn't come out with the lock bolt. If you cant get this out don't worry it can be removed at a later stage.	Unscrew the 6 Phillips screws around the plastic motor cover.	Remove the motor cover and lay it aside with its screws.

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Loosen the 3 set screws in the dovetail carrier. These are located closest to the dovetail.	Remove the dovetail carrier. You may have to twist it back and forth and gently rock it off. Note: You can at this point remove the counterweight bar by pushing it up and out of the DEC axis after removing the knurled safety nut on the end.	Loosen the deep set screws in the Declination barrel. On my mount these screws do not hold anything as the barrel is a single piece of machined metal. But some mounts are two piece.

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Unscrew and Remove the round 'nut' at the top of the Declinationshaft. You can use either a pair of Allen keys, two small Phillips drivers or a pair of strong snipe nosed pliers as shown here. At this stage you may be able to remove the Declination barrel if its in two pieces (mine appears to be a single piece) . If not don't worry and carry on - it will be freed up later.	Loosen the three set screws in the counterweight collar.	Unscrew the counterweight collar. It may be quite tight.

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Remove the tapered bearing behind the counter- weight collar. Mine showed very little lubrication as can be seen here.	Remove the Declination scale from the counter- weight collar. If the mount is to be GoTo apply a small smear of grease otherwise clear any grease from the collar.	Loosen the worm adjustment set screw located just in front of the power panel. This will need to be loosened a lot.

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Loosen the opposing worm adjustment set screw opposite the screw on the previous step - as shown above. This will also need to be slackened off a lot.	Remove the three cap head bolts. They are usually silver coloured located on the top of the worm carrier.	Now lightly tap the end of the Declination shaft which is exposed (after removing the counterweight collar) with a rubber mallet or block of wood.

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Slide out the Declination shaft and set it aside. On my unit the Declination barrel refused to budge from the main shaft - this isn't important. Note: If you had been unable to get the lock lever 'brass button' earlier - it will now be easy to remove from inside the Dec barrel.	Remove the brass Declination gear carefully.	Take care to note and remove the small clear washer andremember to replace

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Remove the worm drive carrier.	Remove the roller bearing from the main housing. My bearings showed poor lubrication from the factory.	Remove the two roller bearings from the Declination gear. The gear showed swarf contamination from the manufacturing process in my mount.

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Remove the brass drive gear from the end of the worm. This has two set screws and may need to be pulled off using some blunt nosed pliers on its central raised area NOT on the teeth. Do not lever this off as it can be easily damaged.	The worm is held into the carrier by two 'float' adjusters. These require a special tool BUT can be removed by using a pair of small screwdrivers. Inser the drivers into the small slot and rotate using even pressure. Remove only ONE of the float adjusters.	Remove the worm itself. You will notice it has two small bearings, these can be removed. One of the bearings is shown in the picture in the bottom right hand corner. Note the worm adjustment set screws. You will need to adjust these at the end of re-assembly.

Stage 3 - Cleaning & Lubrication                                 登录/注册后可看大图

With a clean lint free cloth now wipe all the oil from the components. On my mount the roller bearings were sealed and appeared to be well lubricated so were left alone. The tapered bearing had almost no lubrication and so was cleaned and relubricated with lithium grease. To lubricate bearings put a blob of grease onto the palm of your hand and press the bearing into it and then rotate the bearing around forcing the grease into the inside of the bearing. The brass worm gears and steel worm should all be cleaned in a degreasing agent. I personally find really hot water and a basic detergent works best. These were cleaned with a soft toothbrush and then rinsed and left to dry. All of the gears showed either little lubrication and/or engineering swarf though none of the legendary black 'goop' that is supposed to be used in Synta mounts. The picture to the left shows all of the gears and bearings cleaned and awaiting lubrication and re-assembly.

这个要收藏，谢楼主。。。

Stage 4 - Re-assembling the Worm Carrier

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Stage 5 - Re-assembling the Declination Axis

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Tighten down the 3 deep set screws on the Declination barrel.	Replace the worm carrier onto the Declination shaft. Replace the clear washer on top of the brass gear. Its almost insivisible in the picture above.	Slide the declination shaft back into the main housing.

回复 11# wenzp


    赫赫，刚有人在问，就发了一帖~

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Replace the tapered bearing at the bottom of the main housing after lubricating it with lithium grease. Note If this wont push all the way in dont worry. As long as there is some thread showing on the Dec shaft for the counterweight collar.	Replace the Declination scale on the counterweight collar.	Replace the counterweight collar. Tighten this down using only hand pressure. Tighten it as far as it will go and then back off until the counter-weight lock lever is in line with the Declination lock lever. Note: The threads on this part of the mount can be very stiff - I applied a small squirt of WD40 to ease the threads a little.

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Tighten the 3 set screws in the counterweight collar.	Replace the cap head bolts (normally silver coloured) with just enough pressure to hold the worm carrier in place. Make sure the carrier is lined up with the mount. Note: The worm engamement will need to be adjusted this is covered in the guide HERE.	Replace the Declination lock 'brass button'.

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Replace the Declination lock bolt. Apply a coat of lithium grease and hand tighten down.	Replace the Declination lock lever and make sure it is free to move to both lock and release the declination axis.	Replace the silver Phillips screw in the Declination lock lever.

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Replace the counterweight bar into the Declination axis.	Replace the dovetail mounting. Make sure the locking screws for the telescope dovetail bar are oppositethe Declination lock lever.	Tighten down the dovetail holders 3 set screws.

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