Rotax 532, Rotax 532 aircraft engine rebuilding manual, rebuilding
manual for the 532 Rotax aircraft
engine, cleaning section.
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Rebuilding the Rotax 532 ultralight aircraft engine.
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Cleaning
Tools Required
Oil
Scraper
Wire brush
Old rings
Cleaning solvent
Paint brush
Air
Cylinder hone
Drill
Vice
Cleaning cylinder head
Using a wire brush and PJ1 cleaner carefully remove any carbon deposits from cylinder
head.
Cleaning cylinders
Clean the cylinders with a brush and cleaning solvent. If aluminium deposits are present
first heat the cylinders then apply a small quantity of muriatic acid with a brush, let
stand for several minutes then clean thoroughly with solvent.
Once the aluminium deposits have been removed from the cylinder wall, hone the cylinders
first from one end then the other. When finished the cylinders should have a distinct
cross hatching pattern on the cylinder walls.
Using a wire brush remove all carbon deposits from exhaust ports. If present remove
cylinder base gaskets, exhaust gaskets, and intake manifold gasket material. Rinse
cylinders thoroughly in cleaning solvent, and then using a oil soaked rag wipe inside the
cylinder walls, until walls are coated in a thin layer of oil.
Cleaning Pistons
Before cleaning the pistons carefully remove the rings. Then using a wire brush and
cleaning solvent remove the carbon deposits from the top of the pistons, and from within
the ring land area.
If replacing rings, use old ring to scrape any remaining carbon free from the ring seating
area. If you are reusing old rings ensure they are replaced on the same piston and
installed in same cylinder.
Caution:
Be careful not to damage the ring lands, piston dome or skirt area.
Cleaning
Cleaning crankcase halves
Using solvent and a paintbrush (do not use wire brush) remove any remaining sealing
material from the two crankcase mating areas.
Cleaning the crankshaft
Using PJ1 cleaner and a brush carefully rinse crankshaft and crankshaft bearings. Then
immediately rinse crankshaft bearings in oil.
Cleaning crankcase bolts
Using a wire brush clean any corrosion from crankcase bolts.
Cleaning balance of engine parts.
Using cleaning solvent and brush clean balance of engine parts.
Caution
Do not use wire brush to clean crankcase halves!
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