Sachs SA 280A - Page 19

c
Centering the connecting rod
Fig. 20
Mount suppor t (r) with guide
bush (g) on guide rail (a) and
screw it tight.
I ns er t reamer (t), shank foremost,
int o the guide bush (g) and accu-
rately center the connecting rod
(v) wi th the aid of the t aper .
Care should be ta ken not to dis-
place the connecting rod axially
or radially .
Then
bring ecc entr ic pin (w}
lightly i nto contact with the con-
nectin g rod and sec ure it with
nut (x).
Pre
ss ecc entri c pin (y) firmly
aga inst connecting rod ond tigh-
ten nut {z ).
Reaming the small end bushing
Fig. 21
Cover the crankcase.
The
front adjusting nut {q) of the
reamer is provided with mark-
ings: each divisio n corresponds
to 0.02 mm (0. 00079 in.).
In
sert reamer a nd , wit h the aid
of adjusting nuts (q and p), ad-
just it to the diame t er of the bore
of the small end bushing.
Fig . 20
F &S £. 05 £. :17
Fig. 21
Remove reamer f rom the bushing , slacken lock nut (p), alter position of adjus ting nut
(q) by one divis i on, and secure the blades with lock nut (p).
The
small end bushing can now be reamed car e fully with the aid of the adjus tabl e
reaming tool (t) and the add i tion of oi l or paraffin.
Check the fit with the aid of the gudgeon pi n.
Reaming should be continued until the oi led gudgeon pin slides with a close "sucking"
fit thr ou gh the reamed small end bushing.
Bore
tolerance for the bushing = (/) 18 t ~ : ~~~ mm
0
70866
+0.00078 . d'
.
+0 . 00118 ln. Ia .
FICHTEL & SACHS AG, 8720 SCHWEINFURT, GERMANY
supply this special reaming tool in two versions or individual components if required.
R elevant prospectuses are available from us on request.
17