Clutch And Shock Absorber Unit; Replacement Of The Cork Inserts; Overhaulting The Clutch Dismantling - Triumph SPEED TWIN 1945 Workshop Instruction Manual

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CLUTCH
A N D
S H O C K ABSORBER UNIT
The shock absorber unit which is incorporated in the clutch is robustly constructed
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and
i s
designed t o give many thousands of miles of trouble free service.
Briefly,
it
operates i n t h e following manner: t h e drive i s transmitted through the clutch plates
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i n t h e normal manner, then through the drive rubbers t o the four armed spider
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which i s keyed t o the clutch shaft; this also being keyed t o t h e gearbox mainshaft.
T h e spider is free t o oscillate inside t h e clutch centce b u t is restrained by eight
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rubber pads, t w o o n either side of each arm. The larger o f these pads is the drive
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rubber, t h e smaller t h e rebound. The drive and rebound rubber efiectively level
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o u t all the engine speed variations at l o w speeds, providing an extremely smooth and
pleasant torque, which reduces transmission wear due t o t h e absence of "snatch".
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R E P L A C E M E N T O F T H E CORiC I N S E R T S
The clutch is t h e multi-plate cork type incorporating a transmission shock absorber.
T h e pressure o n t h e plates i s made by four equaliy disposed springs which can be
varied by screwing i n o r o u t the four slotted nuts which secure them. The clutch
It i s n o t recommended that replacement of the cork inserts i n the clutch plates is
made by t h e owner. This operation calls f o r precision and special equipment to
reduce t h e new inserts t o the correct thickness at each side o f the plate and t o
ensure an even overall sudace. The better method is t o exchange t h e old plates
f o r service replacement plates
a t
the nearest Triumph Dealer.
!
is designed
t o
operate i n o i l and
it
i s
therefore essential that the o i l level i n t h e
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chaincase is maintained otherwise t h e cork inserts may b u r n and disintegrate under
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heavy loading. Always use t h e recommended grade o f o i l (SAE 20 see lubricant
chart, page 200). If a heavier grade o f oil
is
used, the clutch plates w ~ l l n o t readily
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separate when disengaged which w i l l cause difficult and noisy gear selection when
I t h e gearchange pedal i s operated.
Even w i t h the thinner grades o f oil, t h e kick-
starter should always be operated a few times w i t h t h e clutch extracted before
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attempting t o start t h e engine. This procedure ensures that the plates separate
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O V E R H A U L I N G T H E C L U T C H
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D I S M A N T L I N G
E x h a u s t P i p e a n d S i l e n c e r
L.H. Remove.
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F o o t r e s t . Remove t h e left footrest.
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F o o t b r a k e Pedal.
Remove the u n i t from t h e pedai spindle.
P r i m a r y Chaincase.
O n the Rigid Frame ST and 6T A.C. equipped models t h e
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stator leads must
f i r s t
be released f r o m under the saddle mounGng and then freed
f r o m t h e frame. Place an o i l drip tray under t h e chaincase and proceed t o remove
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t h e securing screws (all models). E x e t h e outer casing away and where an alternator
is fitted take care t o avoid damaging t h e stator windings.