BOMBARDIER 1980 Shop Manual page 102

TOP END
CLEANING
Discard all gaskets.
Clean all metal components in a non-ferrous metal
cleaner.
DISASSEMBLY & ASSEMBLY
®(2)®
Because of cap nuts. cylinder studs have to be
screwed into crankcase so they do not protrude further
than 15.6 cm (6.140"). If it is not possible to obtain
this length. a washer must be added between cylinder
head and cap nut.
15.6
em
Prior to washers
® (2)
installation, apply silicone sealant
on washer seat of cylinder head, around stud.
Torque cylinder head nut to 3S N'm (2S ft-Ibs) following
illustrated sequence.
Silicone
sealant
SECTION 03
SUB-SECTION 02, (ENGINES)
@@@Place a clean cloth over crankcase to prevent
circlipsfrom falling into crankcase, then use a pointed
tool to remove Girclips from pistons.
Drive the gudgeon pins in or out using a suitable drive
punch and hammer.
Scrape off carbon formation from cylinder exhaust port,
cylinder head and piston dome uSing a wooden spatula.
O NOTE: The letters "AUS" (over an arrow on the
piston dome) must be visible after cleaning.
Clean the piston ring with a groove cleaner tool, or with
a piece of broken ring.
'til'
CAUTION: When tapping gudgeon pin in or out
' " of piston, hold piston firmly in place to eliminate
the possibilities of transmitting shock and pressure to
the connecting rod.
All assembly, place the pistons over the connecting rods
with the letters AUS (over an arrow on the piston dome)
facIOg direction of the exhaust port.
~,
I
,~'""; 'i~~~
Once the Glrclips are installed, turn each Clrcllp so that
the circlip break is not directly in line with piston notch.
Using very fine emery cloth, remove any burrs on piston
caused through circlip installation.
Piston notch
Piston to wall clearance should be:
MINIMUM
0.070
mm
(.OO2S")
MAXIMUM
0.200
mm
(.OOS")
(444 ENGINE TYPE). PAGE 13