Allied Construction Products, LLC www.alliedcp.com
TM576981_HP700B_18feb
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9.0 Care and Maintenance – [cont’d]
9.7.1 Bearing Lubrication
Bearings are lubricated for life and sealed. No regular
re-lubrication is necessary nor possible.
9.7.2 How To Check Bearings
Due to the high loads and rotational speeds, bearing
failure is usually sudden. A rattling or scraping sound
is a tell-tale sign of imminent failure. Visual inspection
of bearing requires removal of the bearing housing.
9.7.3 Bearing Replacement
IMPORTANT
Use only genuine Allied replacement parts to
protect total warranty coverage. Non-approved
parts may impair performance or reliability.
IMPORTANT
Bearings are interference press fit into housing.
Replacement requires a workshop equipped with a
manual arbor or hydraulic press.
Use standard mechanic’s techniques and tools to
disassemble and assemble the Ho-Pac.
Questions regarding maintenance, repair or operation
can be directed to Allied Technical Service. For
questions regarding replacement parts, contact
Allied’s Customer Service.
9.7.4 Bearing Removal
1.
Remove hydraulic motor.
2.
Remove the motor side bearing housing from the
eccentric housing.
3.
Remove the eccentric mass.
4.
Remove the other bearing housing.
5.
Press bearing out of housing. Ensure housing is
properly supported and press only against the
bearing’s inner race.
CAUTION
Crush injury. Eccentric mass is heavy.
Handle carefully to avoid injury to hands
or fingers.
IMPORTANT
Do not pry out the outer bearing race if it remains in
the housing. Place a small weld bead, @1/8 inch (3
mm) along the inside diameter. When cool, remove
the outer race.
IMPORTANT
Obey all local regulations for the proper disposal of
all used fluids.
9.7.5 Bearing Installation
IMPORTANT
Handle new bearings with care to prevent damage.
Do not remove from packaging until ready to install.
CAUTION
Bearings are interference press fit. Apply contact
pressure to the outer race only. Do not hammer on
the bearing rings.
1.
Clean the bearing housing.
2.
Lightly lubricate bearing’s outer race.
3.
Slowly press bearing into housing.
4.
Clean and lubricate the eccentric shaft.
5.
Slip bearing/housing onto shaft.
NOTE
: Close
tolerance slip fit.
6.
Repeat steps 1-4 with other bearing and housing.
7.
Install the bearings and eccentric in to the
eccentric housing. Install bolts.
8.
Install hydraulic motor and bolts.
9.
Install hydraulic hoses.
IMPORTANT
Keep fasteners tight. Replace missing or damaged
fasteners with new. Replacement fasteners must be
the same type and grade. Follow proper torque
procedures. Refer to Table 9.2 for bolt torque.
9.8 Spring Mounts - Replacement
The spring mounts are subject to aging and require
periodic replacement. While spring life depends
primarily on use, other factors, such as extreme
environmental conditions can also shorten spring life.