Metso MP1000, Technical Reference Manual

Page: 163 / 180

SECTION 4 - COUNTERSHAFT, CTRSHAFT BOX & SHEAVE ASSEMBLIES
MP SERIES CONE CRUSHER TECHNICAL REFERENCE MANUAL
4-9
2. Remove all oil and blower piping that would
interfere with the removal of the box. Plug
and cap all open ports.
3. Remove the crusher sheave at this point as
described under Crusher Sheave Removal
earlier in this section. This is done primarily
to prevent damaging or breaking the sheave
during box removal.
4. Remove applicable drive connection as
follows:
V-belt drive
Remove crusher sheave as described
under
Crusher Sheave Removal
, step 1,
earlier in this section.
Direct drive
If the Crusher is driven directly by the
crusher drive motor, remove the drive
motor and the flexible coupling half that
is mounted on the countershaft as
described in the coupling manufacturer’s
instructions.
5. Remove the countershaft box guards.
6. Remove the capscrews holding the
countershaft box to the main frame.
7. Attach a lifting sling around the countershaft
box, sheave end as shown in Figure 4-9.
Then pull up on the sling to obtain a slight
tension. This sling is required so the box
will not drop when the outer countershaft
box turn is pulled out of the frame.
8. Install the special jacking screws, that are
furnished with the machine, into the three
equally spaced tapped holes in the outer
flange of the box.
9. Alternately tighten each jackscrew a small
amount to prevent binding in the frame.
Figure 4-9 Removing Countershaft Box
10. Continue tightening the jackscrews until the
outer countershaft box fit is free of the
frame.
11. Attach a sling around the pinion end of the
countershaft box as shown in Figure 4-5,
then lift the box slightly and slide it as far
out of the frame as possible.
12. Lower the pinion end of the box and allow
the countershaft box pinion end flange to
rest on the main frame.
NOTICE
If there is an exceptionally tight fit, heat may
be applied to the main frame at the outer
countershaft box fit to assist in removal.
Heat the frame housing to approximately
55°C (100°F) above ambient temperature.
Callout Description
1 Jacking screw(s)
2 Lifting sling
3 Sheave bushing
4 Oil flinger housing
5 Countershaft box
6 Main frame
End View
1
3
5
4
2
1
6