Reduction Classes - Pratissoli KT Serie Manual De Reparación

- Insert the new piston guide seal rings as far as possible
into the relative seat on the pump casing (Fig. 11),
following the procedure described:
use the tool code 27904200 composed of a tapered bush
and a buffer. Screw the tapered bush into the hole in the
piston guide (Fig. 11/a), insert the new seal ring on the
buffer as far as it will go (determined by the height of the
buffer) into its seat on the pump casing (Fig. 11/b), remove
the tapered bush (Fig. 11/c).
RING POS.
2.1.3

Reduction classes

TABLE OF REDUCTIONS FOR BEND SHAFTS AND CON-ROD HALF-BEARINGS
Recovery classes
(mm)
0.25
0.50
Fig. 11
Fig. 11/a
Upper Half-Bearing Lower Half-Bearing
Code
90922100
90922200
- Mount the rear cover complete with the O-ring,
positioning the dipstick hole upward.
- Insert oil in the casing as indicated in the Use and
maintenance manual.
Grinding on the shaft pin diameter
Code
90922400 Ø39.75 0/-0.02 Ra 0.4 Rt 3.5
90922500 Ø39.50 0/-0.02 Ra 0.4 Rt 3.5
18
Fig. 11/b
Fig. 11/c
(mm)