SECTION 4 - COUNTERSHAFT, CTRSHAFT BOX & SHEAVE ASSEMBLIES
4-18
MP SERIES CONE CRUSHER TECHNICAL REFERENCE MANUAL
4.3.7 Oil Leakage from Drive End of
Countershaft Box
MP1000
Should oil begin to leak out of the oil flinger
housing at the drive end of the countershaft box, it
may be either the gasket between the flinger
housing and countershaft box has failed or the
piston ring between the flinger and flinger housing
has been damaged or worn and requires
replacement.
MP800
Either the Silastic between the countershaft box
cover and countershaft box has failed or the piston
ring between the flinger and cover has been
damaged or worn and requires replacement.
Check for a dirt build-up in the long cored hole in
the countershaft box, just below the countershaft.
Such a build-up of dirt would restrict oil flow from
the flinger.
It is also possible that the cause of the oil leakage is
the inability of the oil to drain away fast enough
from the Crusher especially when the oil is cold.
Minimum pitch is 25 mm (1") for every 300 mm
(12") of drain pipe used.
Also check the inside of the main drain line hose or
piping for any obstructions, such as dirt build-up or
a collapsed hose that may restrict oil flow.
Any of these items just described could cause the
oil to back up and leak out of the flinger housing
area.
4.3.8 Oil Leakage from Pinion End of
Countershaft Box
If there is oil leakage out from between
countershaft box and main frame at the inner fit, the
seals and wear strip need replacing. To replace the
wear strip and rings do the following:
MP1000
1. Remove the countershaft box assembly,
following the instructions as outlined in
removing countershaft box from main
frame.
2. Once the box has been removed, inspect the
inner bore of the frame. If this bore is
excessively worn, replace the frame ring as
outlined under
Main Frame Ring
Replacement
in
Section 3
.
3. Remove the front O-ring, wear ring and
rectangular seal from the countershaft box.
Remove all the Silastic that was used to hold
the rectangular seal in place. Any Silastic in
the main frame bore should be removed
also.
4. Inspect the countershaft box surfaces on
both sides of the wear ring groove. If the
wear ring was allowed to wear until the
countershaft box turn is allowed to work on
the frame ring bore, refer to Figure 4-18, the
box must be reconditioned. Contact the
factory for the procedure for reconditioning
the countershaft box seal area.
5. If the countershaft box seal area is in good
condition then replace the seals and wear
ring and reinstall the countershaft box
assembly as described under
Countershaft
Box Assembly Installation
.
The rectangular seal is glued in place with
Silastic. Whenever the countershaft box is
removed this seal will be destroyed.
Therefore the rectangular seal must always
be replaced whenever the countershaft box
is removed from the main frame.
MP800
1. Remove the countershaft box assembly,
following the instructions as outlined in
removing countershaft box from main
frame.
2. Once the box has been removed, inspect the
inner bore of the frame. If this bore is
excessively worn, replace the frame ring as
outlined under
Main Frame Ring
Replacement
in
Section 3
.
3. Remove the O-ring and wear ring from the
countershaft box.
4. Inspect the countershaft box surfaces on
both sides of the wear ring groove. If the
wear ring was allowed to wear until the
countershaft box turn is allowed to work on
the frame ring bore, refer to Figure 4-18, the
box must be reconditioned. Contact the
factory for the procedure for reconditioning
the countershaft box seal area.
5. If the countershaft box seal area is in good
condition then replace the O-ring and wear
ring and reinstall the countershaft box
assembly as described under
Countershaft
Box Assembly Installation
.
Summary of Contents for MP1000
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