Copyright - Chiltern Model Steam Engines
Page 1.
Chiltern Model Steam Engines
Mill Twin Cylinder Model Steam Engine v2 Assembly Instructions v1.1
Notes:
1.
In overview the engine should first be assembled "dry" with no oil/lubricants, thread lock or
gasket sealant applied, then disassembled, polished, painted as required, and finally re-
assembled lubricating and applying thread lock and gasket sealant as applicable.
2.
The engine will work properly “dry” but if it is to be run under load, it is recommended that
thread lock, such as Loctite 222 Screwlock (or equivalent low strength locking compound) be
used to stop the fasteners from coming loose. Also that a gasket sealant, such as Loctite
Instant Gasket (or equivalent), is used on the cylinder’s mating surfaces with the end plates
and Chest. Both thread lock and gasket sealant can be purchased for a small sum from
automotive shops or on the internet.
3.
Although all sharp edges and burrs should have been removed during manufacturing, check
all parts and if any sharp edges or burrs exist carefully remove them with a metal file.
4.
It is recommended that the base castings are painted. Hammerite's range of metal paint
sprays work well for this application although do take a long time to dry between coats, up
to a week before the engine can finally be assembled. Use masking tape to cover the mating
surfaces or scrape off the paint as needed afterwards.
5.
For polishing the brass components, wet and dry paper can be used - start with coarse e.g.
280 grade to get the worst marks out of the brass work and end with very fine paper, e.g.
1500 grade and finally Brasso and a rag.
6.
Be careful not to over tighten or cross thread the capscrews, use only a small and/or
medium screw driver. If excessive force is being used there is probably something out of
alignment.
7.
Always check
for the latest assembly drawing, instructions
and tips. Any questions or comments good or bad, please don’t hesitate to contact us via
email:
8.
We would be grateful if you would take some pictures of your completed model and email
them to us for inclusion on our WEB site.
9.
Tools required for assembly depend on which screws have been supplied with the kit but
can include; M2 (4mm) and M3 (5.5mm) open ended spanners, 2.5mm (preferable long)
Hex/Allen Key, 1.5mm Allen/Hex Key, medium slot screw driver, metal file and small pliers,
metal hack saw.
10.
NOTE: some of the screws as provided in the kit may need to the cut or filed to length,
please contact us if this presents a problem and we will work on a solution.
