Triumph Tigress TW2 Service Sheet Download

Page: 29 / 75

c.c.

O.H.V. TWIN CYLINDER SCOOTER

REPLACING, THE ENGINE; GEARBOX AND FINAL DRIVE UNIT IN THE FRAME

With the front engine

studs in position, pick up the unit and holding it tilted slightly to the left pass the

rear.   drive,   unit   through   the   two   vertical   frame   members.   Bring   the   engine   upright   and   slide  it   into
position so that the two crankcase lugs slide into the mounting brackets on the two vertical frame  pillars.
Having placed the unit loosely in position, insert the rear right hand engine mounting bolt through the
lug on the frame and the lug on the crankcase, then pass the left hand bolt through the   mounting in a
similar manner. Place the

clip over the main bolt and fit the two small 4" diameter bolts and nuts.

Pick up the L shaped front engine mounting plates and slide each one into position over the front

engine studs so that the feet of the plates are turned outwards; refit the nuts and washers over the studs
but do not tighten completely. Now replace the .bolts

through the chassis cross member and tighten down

securely, finally tightening the nuts on the crankcase studs. At this stage the rear damper unit should be
coupled at its upper end to the dual seat carrier.

Replace the curved bearing arm which passes outside the left hand vertical tube by sliding it over

the main bearing bush, which has four holes\equally spaced around its periphery. Insert the three long bolts
which retain the rear end of the 'bearing; arm, passing them through from the rear of the final drive case.
Two of these bolts have flats on their heads which engage in flats on the back of the chaincase, the middle
bolt having a hexagon head. Note that the lower bolt also carries the speedometer cable clip. Replace the
large washer on the front end of the bearing arm, making sure that it is engaged over the dowel pin, and
finally refit the hollow bolt which also carries a grease nipple.

Now pick up the speedometer cable and carefully engage the squared end of the inner cable in the

speedometer drive and screw the cable union nut on to the drive bush. Re-connect the brake cable by
passing the inner cable through the slot in the lug, fit the fork end of the cable over the lever, insert the
clevis pin followed by the washer and finally the split pin. Do not omit to spread the ends of the split pin.

Re-connect the two low tension leads to the coils, the longer ,one going to the right hand coil. Refit the

rear mudguard which is secured by four I " diameter nuts and bolts, two on the cross member between the
two vertical pillars and

two. at

the rear on the bracket which carries the petrol tank and silencer.

The kick-starter chain can now be re-connected to the pedal by re-fitting the spring connecting link,

making   sure   that   the   closed   end   of   the   spring   is   facing   towards   the   rear   of   the   machine.   Replace   the
gearchange  lever  over  the  squared  end  of  the  gearchange  spindle,  fit  the  plain  washer,  spring  washer  and
finally the nut.  Make sure that the large plain washer is fitted over the-square on the spindle, and is  not
trapped between the square and the other washer. Tighten the nut securely. Later models use a special nut
only.

If the fabric distance piece is not already fitted to the carburetter flange studs it should now be re-

fitted, together with the jointing washers and the manifold together with carburetter placed in position.

If the carburetter has been removed from the swan neck manifold make sure that the rubber "0"

ring is in position inside the carburetter body. If this is omitted it is liable to cause air leaks and

consequently :weak mixture and overheating. Refit the two spring washers and I " nuts on to the studs

',holding the inlet manifold and tighten evenly and securely. Do not in any circumstances tighten down

one nut before the other as this is liable to distort the manifold face; and will again result in leakage.