BOMBARDIER 1980 Shop Manual page 270

SECTION 05
SUB-SECTION 07 (CHAINCASE)
REMOVAL
Remove pulley guard, drive belt and inspection cover.
Release chain tension.
Release track tension.
Pry oil seal from chaincase (lower part) and drain oil.
Disconnect brake cable.
Pry out lower access plug. Remove cotter pin and spacer.
Remove nut on hinge rod at chaincase bracket.
From the inner side of frame, remove the nut securing
chaincase lower bracket. Remove bracket.
Remove nuts, washers and "U" clamp holding the
chaincase to the frame.
Remove chaincase shim(s) if applicable. Move chaincase
towards drive pulley to disengage hinge rod.
Remove drive axle.
Using two (2) large screwdrivers inserted between chain-
case and frame, pry complete assembly from vehicle.
INSPECTION
Visually inspect chain for cracked, damaged or missing
link rollers. Inspect for defective bearing cones, bearing
cups and oil retainer ring. Inspect sprockets for damage,
wear.
DISASSEMBLY & ASSEMBLY
®@Position oil retainer ring then sit bearing cup in
chaincase aperture. Cup must be seated so that wide
taper end is facing oil retainer ring.
(CHAINCASE) PAGE 2
Bearing cup
Oil retainer ring
Convexe Side
toward all sea!
@Using an appropriate pusher, press oil seal mto chain-
case hub. Oil seal must sit flush with case hub edge.
@@Place lower sprocket with longer flange toward track
side of chaincase. (For proper sprocket and chain use,
see Technical Data.)
_
~ Longer flange
~g::;;:n::
INSTALLATION
Position assembled chaincase and driven pulley in loca-
tion. Install drive axle. (Ensure that spacer has remained
on axle). Install spacer and cotter pin to secure lower
sprocket to axle. Install lower access plug. Install hinge
rod, lower bracket, "U" clamp and previously removed
aligning shim(s).
Install oil seal into chaincase flange.
O
NOTE: A gap of approximately 1.6 mm (1/16")
should exist between the end chalncase flange and
oil seal.
7Jb,;'Y7Y7'7"";:
II~
1,6
~~:~:16")
M
Beanng
011 seal
Spnng
Proceed with pulley alignment. Apply chain tension.
Pour Bombardier chaincase oil into chaincase until flush
with oil level plug.
Connect and adjust brake. Apply track tension.
Install drive belt and pulley guard.