Triumph TR6 PI Operation Manual page 108

ENGINE
STARTER RING GEAR
12.53.19
- Remove and refit
Removing
I.
Remove the flywheel 12.53.07.
2. Place the flywheel assembly on a bench and drill a 1.<
in (6·35 mm) hole midway between the root diameter
of any two teeth and the inside diameter of the ring
gear.
3. Hold the flywheel assembly in a soft jawed vice and
place a heavy cloth over the ring gear for protection
against flying fragments.
WARNING: ENSURE ADEQUATE PROTECTION,
PARTICULARLY FOR THE EYES, TO PREVENT
INJURY FROM FLYING FRAGl\1ENTS WHEN THE
RING GEAR IS SPLIT
Refitting
4. Place a cold chisel above the drilled hole between the
two teeth and strike the chisel sharply to split the
ring gear.
7
MT2688
Heat the replacement ring gear uniformally to a
maximum temperature of 20eoC.
Place the flywheel on a flat surface, clutch face side
uppermost and clean the ring location.
Fit the ring gear to the flywheel ensuring that it
locates against the shoulder on the flywheel round
the entire circumference.
Hold the ring gear in position until it contracts
sufficiently to grip the flywheel and allow it to cool
gradually to avoid distortion.
Check, with a feeler gauge, the gap that may exist
~
between the ring gear and the flywheel shoulder and
=-~-===-====-~
ensure that it does not exceed 0'025 in ("635 mm) in
anyone area of 6 in (15 em) around the
circumference.
Refit the flywheel to the engine and secure with the
four bolts - instructions 7 and 8, 12.53.07.
~~~:;ct~~:s%~~~\:~;2~~~:~~~
and eccentricity
~"~.I,··~.
__ -.
-~---=~==:- ~.
Check the ring gear for eccentricity using a dial gauge . _ __
- see Data.
====~~~=~
. .
~~-~.~
Refit the gearbox and if fitted the overdrive to the
engine.
9
Refit the gearbox. and overdrive assembly to the car.
7.
8.
9.
s.
6.
10.
II.
12.
13.
14.
DATA
NT2481
Maximum fitting temperature for ring gear
Maximum gap between flywheel shoulder and
ring gear in anyone area of 6 in (15 em)
around the circumference
Maximum ring gear excentricity when
attached to flywheel
Flywheel and ring gear assembly
balance to be within
0'025 in ("635 mm)
0'010
in
("254 mm)
0'20 oz. in
12.53.19
Triumph TR6 Manual. Part No. 545277 Issue I
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