Dodge HXT305A User manual

Parts Replacement Manual
For
HYDROIL
TORQUE-ARM
Speed Reducers
Taper Bushed
For Char-Lynn H, S, T and 2000 Series
6B Spline Motors
SIZES: HXT305A
HXT405A
HXT505A
WARNING: Because of the possible danger to persons(s) or property from accidents which may result from the improper use of products,
it is important that correct procedures be followed: Products must be used in accordance with the engineering information specified in the
catalog. Proper installation, maintenance and operation procedures must be observed. The instructions in the instruction manuals must be
followed. Inspections should be made as necessary to assure safe operation under prevailing conditions. Proper guards and other suitable
safety devices or procedures as may be desirable or as may be specified in safety codes should be provided, and are neither provided by
Baldor Electric Company nor are the responsibility of Baldor Electric Company. This unit and its associated equipment must be installed,
adjusted and maintained by qualified personnel who are familiar with the construction and operation of all equipment in the system and the
potential hazards involved. When risk to persons or property may be involved, a holding device must be an integral part of the driven
equipment beyond the speed reducer output shaft.
www.baldor.com www.ptplace.com www.dodge-pt.com www.reliance.com
Baldor Electric Company Headquarters
P.O. Box 2400, Fort Smith, AR 72902-2400 U.S.A., Ph: (1) 479.648.5792, Fax [phone], International Fax [phone]
DODGE/Reliance Division
6040 Ponders Court, Greenville, SC 29615-4617 U.S.A., Ph: (1) 864.297.4800, FAX: [phone]
Copyright © 2007 Baldor Electric Company All Rights Reserved. Printed in USA.
04/07 1M-K
This material is not intended to provide operational instructions. Appropriate instruction
manuals and precautions should be studied prior to installation, operation or maintenance
of equipment.

3
REDUCER INSTALLATION
1. On sizes HXT305A, HXT405A, and HXT505A use
lifting lug to lift reducers.
2. Determine the running positions of the reducer.
(See Fig. 1) Note that the reducer is supplied with
either 4 or 7 plugs; 4 around the sides for
horizontal installations and 1 on each face for
vertical installations. These plugs must be
arranged relative to the running positions as
follows:
Horizontal Installations—Install the magnetic
drain plug in the hole closest to the bottom of the
reducer. Throw away the tape that covers the
filler/ventilation plug in shipment and install plug in
topmost hole. Of the 3 remaining plugs on the
sides of the reducer, the lowest one is the
minimum oil level plug.
CAUTION
Unit is shipped without oil. Add proper amount
of recommended lubricant before operating.
Failure to observe these precautions could
result in damage to, or destruction of, the
equipment.
The running position of the reducer in a
horizontal application is not limited to the four
positions shown in Figure 1. However, if running
position is over 20º either way from sketches, the
oil level, plug cannot be safely used to check the
oil level, unless during the checking the torque arm
is disconnected and the reducer is swung to within
20º in positions “B” and “D” or 5º in positions “A”
and “C” of the possible positions shown in Figure
1. Because of the many possible positions of the
reducer, it may be necessary or desirable to make
special adaptions using the lubrication fitting holes
furnished along with other standard pipe fittings,
stand pipes and oil level gages as required.
3. Mount Taper Bushed reducer on driven shaft per
instruction sheet No. 499629 packed with tapered
bushings.
4. Install torque arm and adapter plates using the
long reducer bolts. The bolts may be shifted to any
of the holes on the input end of the reducer.
5. Install torque arm fulcrum on a rigid support so that
the torque arm will be approximately at right angles
to the center line through the driven shaft and the
torque arm anchor screw.
CHAR-LYNN H, S, T AND 2000 SERIES
6B SPLINE MOTOR INSTALLATION
Consult the local Char-Lynn Motor dealer for
hydraulic motor information.
WARNING
To ensure that drive is not unexpectedly
started, turn off and lock out or tag power
source before proceeding. Failure to observe
these precautions could result in bodily injury.
REDUCER LUBRICATION
CAUTION
Extreme pressure (EP) lubricants are not
recommended for average operating conditions.
Failure to observe these precautions could result
in damage to, or destruction of, the equipment.
Important: Because reducer is shipped without oil, it
is necessary to add the proper amount of oil before
running. Use a high grade petroleum base, rust and
oxidation inhibited (R & O) gear oil—see tables.
Follow instructions on reducer nameplate, warning
tags, and in the installation manual.
Under average industrial operating conditions, the
lubricant should be changed every 2500 hours of
operation or every 6 months, whichever occurs first.
Drain reducer and flush with kerosene, clean
magnetic drain plug and refill to proper level with new
lubricant.
CAUTION
Do not use oils containing slippery additives
such as graphite or molybdenum disulphide in
the reducer when backstop is used. These
additives will destroy sprag action. Failure to
observe these precautions could result in
damage to, or destruction of, the equipment.
CAUTION
Too much oil will cause overheating and too little
will result in gear failure. Check oil level regularly.
Failure to observe this precaution could result in
damage to or destruction of the equipment
Under extreme operating conditions, such as rapid
rise and fall of temperature, dust, dirt, chemical
particles, chemical fumes, or oil sump temperatures
above 200ºF, the oil should be changed every 1 to 3
months depending on severity of conditions.

4
Table 1 – Oil Volumes Volume of Oil Required to Fill Reducer to Oil Level Plug
† Position A † Position B † Position C † Position D
Reducer
Size Fluid
Ounces
(Approx)
S
Quarts
(Approx)
Liters
(Approx)
Fluid
Ounces
(Approx)
S
Quarts
(Approx)
Liters
(Approx)
Fluid
Ounces
(Approx)
S
Quarts
(Approx)
Liters
(Approx)
Fluid
Ounces
(Approx)
S
Quarts
(Approx)
Liters
(Approx)
HXT305A 28 7/8 .83 48 1½ 1.42 44 13/81.30 44 13/81.30
HXT405A 48 1½ 1.42 72 2¼ 2.13 68 21/82.01 60 17/81.77
HXT505A 108 33/83.19 136 4¼ 4.02 124 37/83.67 120 3¾ 3.54
† Refer to Fig. 1 on page 2 for mounting positions.
SU.S. Measure: 1 quart = 32 fluid ounces = .94646 liters.
Note: If reducer position is to vary from those shown in Figure 1
either more or less oil may be required. Consult factory.
Minimum Oil Recommendations for Average Operating Conditions
Table 2 — Lubrication Recommendations —
ISO Grades for Ambient Temperatures of 15º to 60º Table 3 — Lubrication Recommendations —
ISO Grades for Ambient Temperatures of 15º to 125º
Reducer Size Reducer Size
Output
RPM 1 2 3 4 5 6 7 8 9 10 12 13 14 15
Output
RPM 1 2 3 4 5 6 7 8 9 10 12 13 14 15
301–400 220 220 150 150 150 150 150 150 150 150 150 150 150 150 301–400 320 320 220 220 220 220 220 220 220 220 220 220 220 220
201–300 220 220 150 150 150 150 150 150 150 150 150 150 150 150 201–300 320 320 220 220 220 220 220 220 220 220 220 220 220 220
151–200 220 220 150 150 150 150 150 150 150 150 150 150 150 150 151–200 320 320 220 220 220 220 220 220 220 220 220 220 220 220
126–150 220 220 220 150 150 150 150 150 150 150 150 150 150 150 126–150 320 320 320 220 220 220 220 220 220 220 220 220 220 220
101–125 220 220 220 220 150 150 150 150 150 150 150 150 150 150 101–125 320 320 320 320 220 220 220 220 220 220 220 220 220 220
81–100 220 220 220 220 220 150 150 150 150 150 150 150 150 150 81–100 320 320 320 320 320 220 220 220 220 220 220 220 220 220
41–80 220 220 220 220 220 150 150 150 150 150 150 150 150 150 41–80 320 320 320 320 320 220 220 220 220 220 220 220 220 220
11–40 220 220 220 220 220 220 220 220 220 220 150 150 150 150 11–40 320 320 320 320 320 320 320 320 320 320 220 220 220 220
1–10 220 220 220 220 220 220 220 220 220 220 220 220 220 220 1–10 320 320 320 320 320 320 320 320 320 320 320 320 320 320
Below – 23ºF call application engineering.
20ºF to -22ºF use Mobil SHC 627.
Above 125ºF use Mobil SHC 634.
See page 8 for lubricant viscosity classification
equivalents.
NOTE:
Pour point of lubricant selected should be at least
10ºF lower than expected minimum ambient starting
temperature.
Special lubricants may be required for food and
drug industry applications where contact with the
product being manufactured may occur. Consult a
lubrication manufacturer’s representative for his
recommendation.
GUIDELINES FOR TORQUE-ARM REDUCER LONG-TERM STORAGE
During periods of long storage, or when waiting for
delivery or installation of other equipment, special
care should be taken to protect a gear reducer to have
it ready to be in the best condition when placed into
service.
By taking special precautions, problems such as
seal leakage and reducer failure due to the lack of
lubrication, improper lubrication quantity, or
contamination can be avoided. The following
precautions will protect gear reducers during periods
of extended storage:
Preparation
1. Drain the oil from the unit. Add a vapor phase
corrosion inhibiting oil (VCI–105 oil by Daubert
Chemical Co.) in accordance with Table 3.
2. Seal the unit air tight. Replace the vent plug with a
standard pipe plug and wire the vent to the unit.
3. Cover the shaft extension with a waxy rust
preventative compound that will keep oxygen away
from the bare metal. (Non-Rust X-110 by Daubert
Chemical Co.).
4. The instruction manuals and lubrication tags are
paper and must be kept dry. Either remove these
documents and store them inside or cover the unit
with a durable waterproof cover which can keep
moisture away.
5. Protect the reducer from dust, moisture, and other
contaminants by storing the unit in a dry area.
6. In damp environments, the reducer should be
packed inside a moisture-proof container or an
envelope of polyethylene containing a desiccant
material. If the reducer is to be stored outdoors,
cover the entire exterior with a rust preventative.
When Placing the Reducer into Service
1. Assemble the vent plug into the proper hole.
2. Clean the shaft extensions with petroleum
solvents.
3. Fill the unit to the proper oil level using a
recommended lubricant. The VCI oil will not affect
the new lubricant.
4. Follow the installation instructions provided in this
manual.
Table 4—Quantities of VCI #105 Oil
Case Size Quarts or Liters
HXT305A .1
HXT405A .2
HXT505A .3
VCI #105 & #10 are interchangeable.
VCI #105 is more readily available.

5
Note: The two-digit numbers are
for reference only. Order parts
by the six-digit numbers in the
Parts List. Each six-digit number
is a complete identification of the
part or assembly.