Dodge SCXT 225 Manual de instrucciones - Página 2

Navegue en línea o descargue pdf Manual de instrucciones para Equipamiento industrial Dodge SCXT 225. Dodge SCXT 225 4 páginas. 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:

Quarts or Liters

.2 QTS.

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:

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.