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375 SE
800-00162
PUMP MAINTENANCE (90 SERIES SWING)
PUMP MAINTENANCE (90 SERIES SWING)
PUMP MAINTENANCE (90 SERIES SWING)
PUMP MAINTENANCE (90 SERIES SWING)
PUMP MAINTENANCE (90 SERIES SWING)
MINOR REPAIRS
MINOR REPAIRS
MINOR REPAIRS
MINOR REPAIRS
MINOR REPAIRS
Cleanliness is imperative during any repairs or
servicing. Clean parts by using a clean solvent wash
and air drying. All internal mechanisms, sealing
surfaces and related items must be kept free of foreign
materials and chemicals. It is recommended that all
gaskets and o-rings be replaced and all sealing
surfaces be cleaned prior to installing new gasket.
Lightly lubricate all o-rings with clean petroleum jelly
prior to assembly.
SHAFT SEAL
SHAFT SEAL
SHAFT SEAL
SHAFT SEAL
SHAFT SEAL
Lip type shaft seals are used on the 90 Series pumps and motors. These
seals can be replaced without major disassembly of the unit. However,
replacement of the shaft seal usually requires removal of the pump or motor
from the machine.
Remove the screw holding the retainer plate and seal carrier to the housing,
using a 10 mm hex wrench (042 pumps), a 5 mm internal hex wrench (055
through 100 units), or a 6 mm internal hex wrench (130 units). Remove the
retainer plate.
NOTE: Certain units use a one piece retainer plate and seal carrier.
After removing the screw, the seal carrier may move out of its bore by
approximately 1/4". An outward spring force on the shaft will tend to overcome
the friction from the o-ring on the seal carrier O.D. If the seal carrier does not
move from its bore upon removal of the screws, pry it from it bore as shown
and/or lightly tap the end of the shaft with a soft mallet.
NOTE: After the seal carrier is removed, the shaft and bearing assembly may
be free in the housing. Do not remove shaft unless unit is positioned with the
mounting flange UP. If the unit is positioned horizontally when the shaft is
removed, the cylinder block could move out of place, making shaft installation
difficult.
Place seal carrier and seal in arbor press and press out old seal.
Inspect the seal carrier, the new seal and the o-ring for any damage or nicks.
Using the arbor press, press the new seal into seal carrier. Be careful not to
damage seal.
NOTE: The outside diameter of the seal may be lightly coated with a sealant
(such as Loctite High Performance Sealant #59231) prior to installation. This
will aid in preventing leaks caused by damage to the seal bore in the seal
carrier.
Inspect the sealing area on the shaft for rust, wear, or contamination.
Wrap spline or key end of shaft with plastic film to prevent damage to the
sealing lip on the seal during installation.
Prior to assembly, lubricate the o-ring on the O.D. of the seal carrier and the I.D. of the seal with petroleum jelly.
Assemble the seal carrier and seal over the shaft and into the housing bore. Install the retainer plate (if used).
Install the screws and torque to:
10 Ft. Lbs. (for 042 through 100 pumps)
24 Ft. Lbs (for 130 pumps)
7 Ft. Lbs. (for 055 through 100 motors)
16.6 Ft. Lbs. (for 130 motors)
