BOMBARDIER ELAN 3042 1985 Shop Manual page 124

Section 02 ENGINE
Sub-section 06 (467 ENGINE TYPE)
CLEANING
Discard all gaskets and 0 -rings .
Clean all metal components in a non-ferrous metal
cleaner.
Scrape off carbon formation from cylinder exhaust port,
cylinder head and piston dome using a wooden spatula.
0
NOTE: The letters "AUS" !over an arrow on the
piston dome) must be visible after cleaning.
Clean the piston ring grooves with a groove cleaner tool,
or with a piece of broken ring .
DISASSEMBLY
16,17,18, Piston, gudgeon pin & circlips
Place a clean cloth over crankcase then with a pointed
tool inserted in piston notch, remove circlip from piston.
Drive the gudgeon pin out of piston using a suitable drive
punch and hammer.
'W'
CAUTION: When tapping gudgeon pin in or out
T
of piston, hold piston firmly in place to eliminate
the possibilities of transmitting shock and pressure to
the connecting rod.
INSPECTION
The inspection of the engine top end must include the fol-
lowing measurements:
TOLERANCES
MEASUREMENTS FITIING NEW PARTS WEAR LIMIT
(MIN.t (MAX .t
Cylinder taper N.A.
NA
.08
mm
10031 .. 1
Cy li nder out of
N .A
N.A
.05
mm
round
10020 .. 1
Cyli nder/piston .10 mm 12 mm .20 mm
clearance
1. 0039 .. 1 1.004 7" 1 1.0079"1
Ring/piston groove
04
m m .11 mm .20
mm
clearance
10016" 1 1.0043"i
10079")
R1ng end gap
.20
mm
.35
mm
1.0
mm·
1.0079"1
10138 " 1 1.0394"1
0
NOTE: For the measurement procedures, refer to
"Engine dimensions measurement " , section 02-10.
02-06-4
ASSEMBLY
16, Piston
At assembly, place the pistons over the connecting rods
with the letters AUS !over an arrow on the piston dome)
facing in direction of the exhaust port.
EXHAUST
A001002001
0
NOTE: Spare parts pistons and cylinders are identi-
fied with a green or red dot, it is important to match
the piston with the cylinder of the same color
18, Circlip
To minimize the effect of acceleration forces on circlip,
install each circlip so the circlip break is at 6 o'clock as
illustrated.
Using very fine emery cloth, remove any burrs on piston
caused through wclip installation .
'W'
CAUTION: Circlips must not move freely after in-
T
stallation if so, replace them.
C~rcl1p
break
A00100200l
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