XS1100 Standard Speedometer Drive Maintenence

[3Phase]

Opening up, cleaning, painting and greasing the XS1100 Standard speedometer drive.


Remove the retaining ring.




Remove the drive gear and washers, then clean out the old grease.




Clean out the speedometer cable hole in the driven gear.




Put fresh grease back onto the drive gear and washers.




There is a retaining pin for the driven gear but I strongly suggest that you do not remove it.
You can easily clean out the old grease and repack it from inside the speedometer drive housing without disturbing the driven gear.




Self-etching primer for the speedometer drive housing.




Primer Sealer for the housing.




Small amount of Rustoleum Gloss black mixed with NAPA alkyd enamel hardener.




First coat of Gloss Black.




Final result.




Repack the speedometer drive housing with grease, put the gears and washers back in and roll the retainer clip into place.



Now the hard part: put the speedometer drive back on the front axle and go ride somewhere to make sure it works!

[motoman]

Again.....nice pics and instructions as you have done recently with other areas of these ole' scoots maintenance..... Keep it coming Scott!.

[Radioguylogs]

Nice job.

Alkyd enamel hardener-> that's a product I've never heard of.

Seems quite useful.

[3Phase]

Alkyd enamel hardener-> that's a product I've never heard of.

Seems quite useful.

It is, well, used to be useful. The hardener's got cyanide in it so I can't buy it from NAPA any more here in California. It was great for painting small parts and doing small projects without having to wait a month for the paint to dry enough to touch, then five or ten years for the alkyd chains to finish linking and hardening naturally.

To keep fuel from washing off my paint like a chimney sweep's chalk drawings on a sidewalk in the rain I used NAPA's Crossfire CH254 alkyd hardener for my '79 Special fuel tank and side covers when I rolled them with white Rustoleum. Valspar sells a 4625 hardener but I can't get it here either.

All of the parts I painted with Rustoleum turned out well and they're all highly fuel, oil, and brake fluid resistant within a couple of days. No, they're not invulnerable, Rustoleum's good paint but it's not all that! So far they haven't faded or changed color and they don't chip, fade or peel even if they're not 100% fuel proof. Rattlecan paints are good for primer but they're expensive. Brushing or rolling can lay down more paint that works better if you put even a little effort into it because like all painting, most of the work is in the prep.

[3Phase]

The bottom line from the information I've found that I won't repost here is to use forced ventilation with a fresh-air supply mask and full suit to work with isocyanate hardener, working outdoors with gloves and an activated charcoal respirator is not good enough. Don't touch it, don't inhale it, stay away from the paint while it's curing/drying and don't do any part of the painting or drying indoors because the iso vapor can get you, your family, and your pets.

But apparently I was wrong about isocyanate paint hardener. The hardener itself doesn't actually contain cyanide but it'll still kill you and it's still banned by the C.A.R.B. in my part of California but you do have to love modern search engines!

I read what I though was some conflicting information about alkyds, polyesters, acrylics, urethane and polyurethane so I put "is there cyanide in isocyanate hardener" into Google. Even that didn't really produce many straight Yes/No answers... the top three hits were from a Canadian link to a German corporation's publication from its US office -- Bayer -- and the Australian and the UK Governments:-

BOLD emphasis in the quotations is mine.


http://www.endura.ca/pdf/IsocyanatesQA.pdf
[PDF] Isocyanates Q&A - Endura Paint

ISOCYANATES

Questions and Answers About Use and Handling in Coatings Applications
QA & Product Safety and Regulatory Affairs Department
Bayer Corporation
Revised May 2002

[...]

Section II:
Chemical Nature of Isocyanate Products

1. Question:
What is an Isocyanate?

Answer:
An isocyanate is any chemical that
contains at least one isocyanate group in its structure.

An isocyanate group is a group of atoms containing
one nitrogen atom attached by a double bond to one
carbon atom, which in turn is attached by a second
double bond to an oxygen atom (-N=C=O). A chemical
containing two such groups is called a diisocyanate.
Common examples are toluene diisocyanate (TDI),
hexamethylene diisocyanate (HDI), isophorone
diisocyanate (IPDI), and diphenylmethane
diisocyanate (MDI). These also are often called
monomers because they can be made to react with
one another and various other chemicals to form
large chain-like chemicals called polymers.
Polyisocyanates such as Desmodur N are intermediate
in size between the small diisocyanate monomers and
the very large polymers.

2. Question:
Is there cyanide in isocyanates or is
cyanide given off during the normal
use of isocyanate products?

Answer:
Although the two chemical names
are similar, no cyanide is used to make or is present
in isocyanate products from Bayer. In addition, no
cyanide will be released during the normal use of
isocyanate products. However, cyanide can be
produced from isocyanates by heating to decomposition
and/or burning. In fact, burning any nitrogen-containing
material, even those that were not made from
isocyanates, can produce some hydrogen cyanide.
Some examples of these nitrogen-rich materials not
made from isocyanates are: epoxy/polyamide coatings,
melamine coatings, alkyd urea coatings, and even
natural materials such as wool.

[...]

http://www.safeworkaustralia.gov.au/sites/SWA/about/Publications/Documents/912/guide-to-handling-isocyanates.docx
[DOC] Guide to handling isocyanates - Safe Work Australia

GUIDE TO HANDLING ISOCYANATES
This Guide provides information on how to manage health and safety risks associated with the manufacture, storage, handling, generation and use of isocyanates in the workplace.
Isocyanates in the workplace can present significant risks to workers. Workers exposed to isocyanates can develop a range of short and long-term health problems.

What are isocyanates?

Isocyanates are hazardous chemicals.
Isocyanates are widely used in manufacturing materials like polyurethane foams, rubbers, plastics, varnishes, adhesives and paints. A list of the most widely used industrial organic isocyanates and their main uses is in Table 1.

Table 1 Isocyanate compounds

Name                            | Form	                                      | Main uses
Toluene diisocyanate (TDI)  |	Liquid (mix of 2,4- and 2,6-isomers) |	Flexible polyurethane foam production

Methylene diphenyl diisocyanate (MDI) |	Low-melting point solid |	Rigid polyurethane foam production

Hexamethylene diisocyanate (HDI) |	Liquid	 | Spray paints, lacquers and car re-finishing

Napthalene diisocyanate (NDI) |	Solid	| Elastomers and synthetic rubbers

Methyl isocyanate (MIC) |	Liquid (highly volatile)	| Intermediate in the production of some pesticides
(Bhopal, India disaster)

Isophorone diisocyanate (IPDI) |	Liquid	 | Manufacture of coating and adhesive polymers and polyurethane foams

Isocyanates are supplied in different forms. A paint hardener product labelled as containing no free isocyanates—that is no isocyanate monomers —may still be toxic because of its high proportion of other isocyanate forms including polymeric isocyanates. Isocyanates can also be generated from thermal decomposition of polyurethane materials including coated metals.
Isocyanates should not be confused with cyanates, isocyanides or cyanides which have different properties and health effects.

[...]

http://www.hse.gov.uk/foi/internalops/fod/inspect/mvrtopicpack.pdf
[PDF] Control of isocyanate exposure in motor vehicle repair (MVR) - UK Health and Safety Executive (HSE)

‘Inspection Topic Pack’
Control of isocyanate exposure in motor vehicle repair (MVR) bodyshops Disease Reduction Programme
Version 7, October 2007

[...]

1.6. Current awareness of isocyanate risks.
The evidence from 100 visits to MVR bodyshops in the London and South East by HSE field
scientists in 2003-2003, and work done by others in CHSD3 and HSL on the knowledge of microcompanies,
including MVR businesses, suggests that many employed or working in MVR
bodyshops do not understand the risk that isocyanate paints pose or the health effects that can be
caused. There would appear to be real confusion as to the potential health effects and harm.
People think that isocyanate contains “cyanide” and can “poison you”, or it “can give you
cancer”. This, and other factors, probably means that people do not identify early signs of
respiratory sensitisation caused by over-exposure to isocyanate e.g. chest tightness (often in the
evening/early morning) after work, persistent cough, flu-like shivers. Many people soldier on, still
too exposed, with their symptoms getting worse, until they are forced to give up work.

1.7. What happens to MVR bodyshop workers who contract OA?
Once they have started to react and the longer their over-exposure continues, the worse will be the
long-term outcome. For such people the initial occupational asthma caused by isocyanate becomes
more-or-less permanent asthma. And the longer people soldier on the worse the asthma and the
more permanent and debilitating the harm to their lungs. Some people will reach the “respiratory
cripple” stage where they get asthma attacks from a whole range of non-specific respiratory insults
such as the smell of paint or perfume or petrol or simply inhaling cold air.

[...]

Use forced ventilation with a fresh-air supply mask and full suit to work with isocyanate hardener, working outdoors with gloves and an activated charcoal respirator is not good enough. Don't touch it, don't inhale it, stay away from the paint while it's curing/drying and don't do any part of the painting or drying indoors because the iso vapor can get you, your family, and your pets.