Do I need these tools? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 04-19-2020, 10:19 AM Thread Starter
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Do I need these tools?

The service manual describes needing a piston ring remover tool to change the rings, and a piston leveling tool to hold the piston in place while putting the cylinder back in. Are these needed? Or can the job be done with a substitute?


'89 VN750 Bought stock 4/12/18 @ 17805.9 miles $800. Wrecked once. 27454.5+ miles

Completed modifications:
Removed mufflers, straight pipes out of GB. 110/90 Front Tire. Pick-up coil mod. Shindengen MOSFET FH020AA r/r. USB Outlet + Voltmeter. Repainted Metallic Blue w/ new tank bages. Ear Shave (wo/ coasters) 40/140 NO shims 45MPG. MCCT conversion.

Planned modifications:
Custom LED turn signals. Windshield. Highway Pegs. (Possible) ignition adv. Tuxedo Mod. Ignition coil mod.
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post #2 of 6 (permalink) Old 04-19-2020, 10:33 AM
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No.

If you're careful and take your time, the rings can be 'spiraled' into place. Practice taking the old rings off the same way. You simply bring the end of the ring out of the groove a bit at a time, working around the piston. After the top ring is removed, spiral the next ring up to the top groove, then up and off. Oil rings come remove/install in three pieces, top, spacer, and bottom, etc.

You can also practice breaking the old rings, to get a feel for what they can take before breaking.

Install in reverse order. Don't skip grooves, let the lower rings land in the wrong groove, then continue, same when removing.

To install pistons, the bottom od the cylinder is beveled and will compress the rings as you work the cylinder down over the piston. Squeeze each ring together as it enters the cylinder. I've yet to see a bike cyl. that isn't beveled at the bottom.

Pay attention to ring orientation when installing on piston, if the rings are marked, the mark normally faces up. Sometimes the ring isn't marked but has a bevel. Should be instructions with the ring set.

Also pay attention to ring end gap placement, don't have them all lined up. Usually the manufacturer provides placement info.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #3 of 6 (permalink) Old 04-19-2020, 10:45 AM
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Never used a special tool to remove a piston ring, just a small screwdriver and two pairs of needle nose pliers. You just need to be careful not to scratch the piston.

As for putting the piston back in the cylinder, I just eyeballed it an used the wooden handle from a little hammer across the bottom of the piston to start it in. Once you get in in a bit, it should just slide in as you lower the cylinder.
I just squeezed the rings by hand, but did coat the inside well with oil.
To be honest thatís on other bikes I had worked on, never replaced rings on the Vulcan, but canít see what be that different.

The only special tool I think you need for this bike is a clutch hub wrench, which of course you only need if you want to remove it.

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post #4 of 6 (permalink) Old 04-19-2020, 10:45 AM
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On car engines, I've never used a ring installer, but for the pistons you do use a ring compressor because the cylinders on those engines are not beveled.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #5 of 6 (permalink) Old 04-20-2020, 09:25 AM Thread Starter
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Thank you everyone! I think I'll finally be able to start assembly this Saturday (if everything ships, that is!).


'89 VN750 Bought stock 4/12/18 @ 17805.9 miles $800. Wrecked once. 27454.5+ miles

Completed modifications:
Removed mufflers, straight pipes out of GB. 110/90 Front Tire. Pick-up coil mod. Shindengen MOSFET FH020AA r/r. USB Outlet + Voltmeter. Repainted Metallic Blue w/ new tank bages. Ear Shave (wo/ coasters) 40/140 NO shims 45MPG. MCCT conversion.

Planned modifications:
Custom LED turn signals. Windshield. Highway Pegs. (Possible) ignition adv. Tuxedo Mod. Ignition coil mod.
Jason Pittenger is online now  
post #6 of 6 (permalink) Old 04-20-2020, 10:17 AM
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I only use my fingers to install rings, less chance of breakage.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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