Section 04
TRANSMISSION
Sub-Section 07
(CHAINCASE)
04-07-2
REMOVAL
To remove chaincase proceed as follows.
Remove tuned exhaust pipe and muffler.
Remove hair pin
no. 18
. Release drive chain ten-
sion by unscrewing tensioner adjustment screw.
Drain oil by removing chaincase cover
no. 2
.
3,4,5,6,13,16,17, Cotter Pin, Nut,
Sprocket, Shim and Drive Chain
Remove cotter pin
no. 3
, nut
no. 4
, washer
no. 27
retaining upper sprocket
no. 5
and screw
no. 15
retaining lower sprocket
no. 16
. Pull
sprockets and drive chain simultaneously. Re-
move shims
nos. 6
and
17
.
NOTE:
Should countershaft removal be re-
quired, refer to BRAKE 04-06 then look for
Brake disc
.
Remove 5 nuts
no. 14
. Three nuts are behind the
lower sprocket.
Unfold locking tab
no. 24
, unscrew nuts
no. 25
then remove caliper retaining screws
no. 23
.
Release track tension, use drive axle holder
no. 21
(P/N 529 0072 00).
TYPICAL
1. Drive axle
2. Suspension cross shaft
Pry out drive axle oil seal
no. 20
from chaincase.
Pull chaincase from drive axle and countershaft.
Using 2 large screwdrivers inserted between
chaincase
no. 7
and frame, pry complete assem-
bly from vehicle.
INSPECTION
Visually inspect the chain for cracked, damaged or
missing links. Check for worn or defective bear-
ings, sprockets and chain tensioner components.
GEAR RATIO MODIFICATION
For particular applications, the number of teeth of
the sprockets can be increased or decreased on
lower and upper sprockets.
Refer to TECHNICAL DATA 09-03 for gear ratios.
NOTE:
For high altitude regions, the High Al-
titude Technical Booklet (P/N 484 0648 00
and P/N 484 0545 00 for binder) gives information
about calibration according to altitude.
INSTALLATION
Reverse removal procedure and pay attention to the
following. Replace oil seals, gaskets and O-rings.
Refer to DRIVE AXLE 06-04 for drive axle axial
play adjustment.
11, Oil Seal
Clean chaincase bore with Loctite Safety Solvent
(P/N 413 708200) then apply Loctite 609 to oil seal
mounting surface (outside).
Using an appropriate pusher, press the oil seal
into chaincase hub. Oil seal must fit flush with the
chaincase edge.
NOTE:
Should installation procedure for coun-
tershaft be required, refer to BRAKE 04-06
then look for
Brake disc and Countershaft bear-
ing adjustment.
◆
WARNING
Never remove exhaust components when
engine is hot.
'
A01B1FA
1
529 0072 00
2
◆
WARNING
If chain deflection is greater than 38 mm (1.5
in) (without chain tensioner), replace chain
and check condition of sprockets.
-
CAUTION
Gear ratio modifications should only be per-
formed by experienced mechanics since
they can greatly affect vehicle performance.
'
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Summary of Contents for FORMULA 500 1997
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