Dodge SCXT 225 Руководство по эксплуатации - Страница 2
Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Промышленное оборудование Dodge SCXT 225. Dodge SCXT 225 4 страницы. Mima wrapper speed reducer
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Lubrication
SCXT225MIMA Reducer is shipped with approximately 2 quarts
of Mobil SHC 634 ISO 460 VG.
Table 1- Quantities of VCI #105 Oil
Dodge Part Number 415112-80-DB
Case Size
SCXT2
VCI #105 & #10 are interchangeable.
VCI #105 is more readily available.
Replacement Parts
Using an arbor press, equipment for heating and shrinking
bearings and gears on shafts, and the tools normally found in
a maintenance department, the MIMA SCXT225 speed reducer
can easily be disassembled and reassembled by careful
attention to the following instructions.
Cleanliness is very important to prevent the introduction of
dirt into the bearings and other parts of the reducer. The oil
seals are of the rubbing type and considerable care should be
exercised during disassembly or reassembly to avoid damage
to the surfaces on which the seals rub. Any sharp edges on the
input shaft or output hub should be covered with adhesive tape
or paper before performing any work on the unit. Nicks and
burrs on surfaces of the input shaft or output hub should be
removed.
Ordering Parts
When ordering parts, specify SCXT225 MIMA and part number,
part name, and quantity. Parts that must be pressed from
shafts or output hub should be removed before ordering parts.
This assures that those parts, if damaged during pressing
operation, will be replaced.
It is recommended that when a pinion or gear is replaced, its
mating gear or pinion be replaced also. This ensures that the
gear teeth will mesh properly. If the large gear on the output hub
must be replaced, it is suggested that an output hub assembly,
consisting of a gear assembled on an output hub, be ordered
to secure an output hub with undamaged surfaces on which
the oil seals rub. However, if the old output hub is to be used,
carefully press the gear and bearing cones off. Thoroughly
examine the area under the oil seals for scratches or any other
damage resulting from the pressing operation. To prevent oil
leakage at the oil seals, the rubbing area must be smooth.
Replacements for the old oil seals should be ordered, due to the
probability of these parts being damaged during disassembly.
If replacing a bearing, output hub or a shaft, it is advisable to
order a set of shims for adjustment of bearings on the shaft
assembly. If replacing a housing, a set of shims should be
ordered for each shaft assembly because the adjustment of
bearings on each shaft assembly is affected.
Disconnect any electrical power to the drive. Drain lubricant
from reducer. Uncouple drive shaft and screw. Remove nuts
from trough end studs. Support drive by means of hoist and
carefully pull unit away from trough end to slide drive shaft out
of screw.
Disassembly:
1.
2.
3.
Quarts or Liters
.2 QTS.
4.
WARNING: Solvents can be toxic and/or flammable. Follow
manufacturer's safety procedures and directions. Failure
to observe these precautions could result in bodily injury.
Reassembly:
1.
2.
3.
4.
5.
6.
7.
8.
9.
2
Position reducer on its side and remove bolts. Gently tap
the output hub and input shaft with a soft hammer (rawhide
not a lead hammer) to separate the housing halves. Open
housing evenly to prevent damage to the parts inside
Lift shaft, gear and bearing assemblies from housing.
Remove seals, seal carriers and bearing cups from
housing.
Clean all parts in solvent, inspect for damage and coat with
oil.
Output Hub Assembly: Heat gear to 325° to 350°F for
shrinking onto output hub. Heat bearing cones to 250° to
270°F for shrinking onto output hub.
Countershaft Assembly: Heat gear to 325° to 350°F and
bearing cones to 250° to 270°F for shrinking onto shaft.
Input Shaft Assembly: Shaft and pinion are integral. Heat
bearing cones to 250° to 270°F for shrinking onto shaft.
Drive the dowel pins back into position in the right hand
housing half.
Install countershaft and input bearing cover in right-hand
housing half. Place housing half on blocks to allow for
protruding end of output hub. Install bearing cups in right-
hand housing half making sure they are properly seated
(output only).
Mesh output hub gear and small countershaft gear together
and set in place in housing. Set input shaft assembly in
place in the housing. Make sure bearing rollers (cones) are
properly seated in their cups (output only).
Clean housing flange surfaces on both halves, making
sure not to nick or scratch flange face. Place a new bead
of gasket eliminator on flange face and spread evenly over
entire flange leaving no bare spots. If too much sealant is
used, it will run into the bearing, and too little sealant will
result in an ineffective seal. Place other housing half into
position and tap with a soft hammer (rawhide not lead
hammer) until housing bolts can be used or draw housing
halves together. Torque housing bolts to 550-600 in.-lb.
Place output hub seal carrier in position. Shim and torque
bolts per special instructions attached.
Apply RTV to all SCAL O.D.'s.
Extreme care should be used when installing seals to avoid
damage due to contact with any sharp edges on the input
shaft or output hub. Possibility of damage and consequent
oil leakage can be decreased by covering all sharp edges
with tape or paper prior to seal installation. Fill cavity
between seal-lips with grease. Seals should be pressed or
tapped with a soft hammer evenly into place in the carrier
applying pressure only on the outer edge of the seals. A
slight oil leakage at the seals may be evident during initial
running in but should disappear unless seals have been
damaged.
Fill with approximately 2 quarts of Mobil SHC 634 oil, ISO
460 VG.