SECTION 4 - COUNTERSHAFT, CTRSHAFT BOX & SHEAVE ASSEMBLIES
MP SERIES CONE CRUSHER TECHNICAL REFERENCE MANUAL
4-11
Figure 4-10 Pinion Removal
Figure 4-11 Installing Pinion
4.3.3 Countershaft Bushing Removal
When a bushing becomes worn and replacement is
necessary, the bushing may be loose in the box. In
instances such as this, the bushing is simply slid
from the box without difficulty. Due to extreme
limits of manufacturing tolerances, the countershaft
bushings may have had a slight interference fit
within the countershaft box. If such is the case,
removal will be more difficult. To replace the
countershaft bushings that have such a press fit or
those that have seized in the box because of a build
up of heat due to inadequate lubrication or from
overloading the Crusher, proceed as follows:
1. Remove the countershaft box from the main
frame and the countershaft from the
countershaft box as described under
Countershaft Box Disassembly.
Callout Description
1 Countershaft
2 Pinion
3 Wood blocking
NOTICE
If the pinion cools and becomes hung up on
the shaft, reheat the pinion with a torch
while bumping the pinion with a wooden
ram. Remember to continuously keep the
flame moving around the outside of the
pinion to avoid any high heat concentration
in one spot.
1
2
3
Callout Description
1 “C” Clamp
2 Pinion
3 Countershaft
4
MP1000 — 5 mm (0.197")
MP800 — 10 mm (0.393")
1
3
1
4
2
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