Gauge Repair/Refurbish-Yamaha XS/TX 70-83 Gauge Repair..........Honda 70/71 750/4-KO

[650Skull]

This thread covers all Yamaha XS650 Gauges from 1970 - 1984.......

Honda 70/71 750/4 KO post #8 .....by WideAWAKE

Parts Semantic 78-83 Specials

74-83 Bezel removal
1 This should be done on a soft surface so no damage will be done to the paint or metal ring. I used a folder that had a lot of paper work in it......This Bezel has been removed and reinstalled using this procedure.


2 before i started the second....3 a comparison of before and after...4 bend a screwdriver
.....................

5 Using the screwdriver gently...pries the lip. NOTE: Do not try to pries open to much or you stretch the metal and it can't be returned in a neat fashion


6 Gently go around the gauge, (Note: but not the full way around leave an inch or so as in Pic #10). The lip is stretched so gentle small increments does the least damage and is easier to reinstall


7 Gently Bentley..............................8 the lip is getting to the fully opened stage
..........

9 What the lip looks like when it is ready to slip off


10 Leave a small piece of the lip not pried at all to help with the tension when reinstalling and tapping back down........Need to wiggle a bit to get off and when reinstalling


11 Using the screwdriver gently insert under the ring and lever against the plastic case. If the ring has not been pried open enough it will be hard to slip of........Don't force it may need to do some extra stretching......When at this stage it is surprising how much leverage is needed to get that extra stretch out of the lip

 

[650Skull]

12 slips off easy.........................13 get familiar with the order of the parts in the ring


14 some work i done................15 Parts in order


NOTE: Before Reassembling... I super-glued the metal casings to the housing that the gauge lights use as a reflector.
NOTE: ......On the 74/75 Gauges i think the reflectors are paper of some kind

Example only showing the reflectors........../NOTE: 74/75 Speedo/Rev Counter Case. These
This is a 76 speedo Case........................../are metal but the same Principal applies
.........................

16 When reassembling slip the lip if the case into the area that has not been stretched ....
......

17 pushing hard down on the corner with one hand use the thumb of your other to pries the plastic case into the metal ring. There is some flex in the plastic cup.


18 Almost there, just a bit more push and pull..........19 Back on
.......................................

20 I used a small 38th screwdriver type drive from a socket set and at a steep angle, as close to the original bend as possible and pushing down with the hand and holding the Drive gently tap the edge of the bezel......As when taking it of ..........do a small increment at a time and several passes


21 On each pass i slowly straightened the 38th drive till i was vertical and the lip is fully re positioned as in pic 1


Aftermarket/Home made Rubber Damper Replacement.
Rubber from Rubber Factory.
Tools used........Sharp Blade from a box cutter........lithium Grease



Dismantle the cup from the Case


Factory Damper


Rubber from a rubber factory that supplies all rubbers and seals for cars/trucks ect..........The damper rubber is 5mm thick...............Note; i glued the 2 ends with a bit of superglue. Don't glue across all of the face, leave a small bit, 1-2mm at each edge so the damper is soft. This allows the damper to squeeze when assembling.....Also assemble the join so it is at the base of the Gauge when mounted

Cut Should be no more than 2mm deep. Width between cup and Bezel should be 6mm. I made mine wider, (8mm, ) 2mm more than the Factory Damper, (6mm) Although it still worked it should have been narrower than 8mm because it puts just a bit to much pressure on the gauge/cup attachment nut........... The line is a bit rough so make sure you do a better job

Slip damper into cup first then smear a bit of lithium grease on the inside of the rubber and around the gauge case near the Bezel


Slipped in the gauge and tightened up the Cup nuts. As you can see the Damper is a bit wide


YamahadudeXS650C's, Damper solution.........Post #7
http://www.xs650.com/threads/xs650b-neutral-light-bulb.39621/

 

[650Skull]

XS1/1B....
NOTE; XS1 and 1b Gauges cannot be opened up by removing the bezel........they have to be cut open

By @gggGary

Hot off the presses; on the 70 and 71 gauges only, the glass and black ring UNSCREW off the "chrome" plastic housing.
Look at the pics below the 70-71 have a thin bezel with a sharp outer edge. The 72-73 bezels are larger and more rounded and a thin ring is pried away from the body to remove like later gauges.
Taint always EASY.... they are threaded together, with some sort of sealer in the threads. The good news is that 50 years on the adhesive has dried out. With CAREFUL work it unthreads. Sitting on a vice the jaws lightly holding the back mount screws. My dear wife using rubber gloves to counter my twisting on the bezel with a rubber strap wrench. one hand on the wrench handle the other gripping the bezel and strap together.

made a thread cleaner out of a bolt.

The replacement faces from England are far superior to the less expensive US sourced pieces and WAY easier to install perfectly.

A set of 72 gauges with the decal style faces before and after

LINK; TwomanyXS1B's....... XS1/1B gauge Dismantle and repair
http://www.xs650.com/threads/early-model-70-71-instrument-rebuild-rejuvenation.31305/

XS2/TX....
LINK; Mailmans XS2 gauge.........Dismantle and Face decal repair.
http://www.xs650.com/threads/mailman’s-xs2-a-sympathetic-restoration.51520/page-9

LINK; Mailmans XS2 Gauge..........Repairing a worn out rev counter
http://www.xs650.com/threads/1972-xs2-tachometer-repair.55901/

LINK; Roy's XS2 .......... Rev counter repair
https://www.xs650.com/threads/tachometer-rebuild-xs2.64597/

 

[650Skull]

74/75 Gauges.

Below.
Red arrow on the damper shows a grove and 2nd red arrow points to the area on the Gauge housing where there is a Protrusion that slots into the groove........This helps to stops the gauge rubber from rotating in the bracket.

Blue arrows indicate the grove in the rubber and protrusion on the bracket the rubber slots onto

Green arrows show the clips on the cups and where they slot onto the bracket to stop the gauge from rotating.......most times the clips are broken. Probably from over tightening the cups when the rubber starts to loose its strength and the pic shows what the condition is usually like. They all seem to have failed from heat, maybe the vibration has caused this.

If the cup clips are broken they need to be replaced some how. these 2 are the only things from stopping the gauge from rotating in the bracket even if the dampers are replaced.



Commercial Rubber Damper replacement.
https://hvccycle.net/yamaha-rd250-rd350-indicator-mount-damper-kit-hvc20086/

DogBunny's Rubber Damper replacement fix repair
Details on some differences between the 74TXA and 75B gauges
http://www.xs650.com/threads/o-ring-or-other-replacement-for-74-75-speedo-damper.52318/

Gordon in nc's Rubber damper replacement fix/repair
Scroll down to post #25
http://www.xs650.com/threads/xs650b-neutral-light-bulb.39621/page-2

Replacment Damper.........post #42
http://www.xs650.com/threads/o-ring-or-other-replacement-for-74-75-speedo-damper.52318/page-3

 

[650Skull]

76-83 Gauge Internals and Gauge Cups.
These are all basically all the same. 76-83 Standards and Specials have the needle stop on the gauge face.

LINK; Visual information on 76-83 gauges......Posts #2, #4, #5
http://www.xs650.com/threads/1977-xs650-speedometer.53119/#post-565126

LINK; Bulb Access/Change/Hints
http://www.xs650.com/threads/speedo-access-to-bulb.42738/#post-426644

76 Gauge Semantic

77-79 Standard Gauge Semantic

76 Speedo



LINK; DaveO; A repair for Tachometer extreme needle Fluctuations
http://www.xs650.com/threads/repair-of-tachometer.37599/

 

[650Skull]

Suppliers for Gauge Dampers and other XS/TX 650 related parts........US and Non US

US suppliers
https://www.partzilla.com/catalog/yamaha/motorcycle/1979/xs650-2f/speedometer-tachometer
http://pgmrubber.com/index.php?route=product/category&path=70_78
http://store.speedandsportinc.com/index.tpl

Early pre 74 Gauge mounting rubber
http://www.kdirepros.com/category-s/101.htm

74/75 Gauge/Bracket Damper
RD 350........May fit XS650
https://hvccycle.net/yamaha-rd250-rd350-indicator-mount-damper-kit-hvc20086/

Cluster Bracket Face plate.......
NOTE; RD's have an oil warning light.........XS650s have a Brake lining warning light
https://hvccycle.net/yamaha-rd250-350-1973-1975-ignition-trim-plate-hvc20087-9/

76-83 Gauge/Cup Damper
https://hvccycle.net/indicator-damper-3h3-83513-00-00-584-83513-00-00/

Non US suppliers
https://yambits.co.uk/
https://www.cmsnl.com/yamaha-xs650-1979-usa_model8641/partslist/H-03.html

These guys are wholesalers.....they have a list of their suppliers under Dealers......NOTE: Sumo rubbers are no longer in business
http://pgmrubber.com/index.php?route=product/product&path=70_78&product_id=126
Same supplier as above but the whole list of dampers
http://pgmrubber.com/index.php?route=product/category&path=70_78



Commercial restorers.
Gauge repairs and rebuilds.
i have not used these guys.
https://joellevinecompany.com/Speedo-Tach-Repair/

 

[XS650D]

Thx

 

[650Skull]

70/71 Honda CB750/4-KO Gauge Dismantle/refurbish/repair.........By WideAWAKE

From Post #72
https://www.xs650.com/threads/cb750k0-any-interest.61705/page-4#post-747367

 

[gggGary]

Great thread Skull!
Found that a large hose clamp surrounding the bezel covered with electric tape, and this butchered up pliers made uncrimping a rather painless process on late model gauges. Holding the pliers at a slight angle helps kind of ramp the crimp open.
Try to find a hose clamp with a smooth back at the screw fitting.... apply tape to the inside of the clamp to keep from scratching the bezel paint.

I carefully brushed flat black from a rattle can over the faded EPA redline on this speedo. It's not invisible but doesn't catch the eye either.

. IMHO while the gauge is open I put blue locktite on the screws, remove, do them, even if they aren't loose (yet). The "missing" screws can usually be found stuck on the "bell magnet" in the back.

 

[650Skull]

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[650Skull]

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