Maintenance - Standard Units
Your Grove Gear reducer has been tested and adjusted at Factory. Dismantling or replacement of components must be done by Grove
Gear to maintain the warranty.
1. Frequently check the oil level of the reducer. If oil level is low, (refer to Figure 1) add proper lubrication through the filler plug until
it comes out the oil level plug.
2. Inspect vent plug often to insure it is clean and operating.
3. Always check for proper oil level after filling. Do not overfill or underfill with oil, or injury to personnel, reducer, or other equipment
may result. Proper fill quantities in Table 1.
4. Do not mix different oils in the reducer.
General Operation
1. Run the motor which drives the reducer and check the direction of reducer output rotation. Consult motor nameplate for instructions
to reverse the direction of rotation.
2. Attaching the load: On direct coupled installations, check shaft and coupling alignment between speed reducer and loading
mechanism. On chain/sprocket and belt/pulley installation, locate the sprocket or pulley as close to the oil seal as possible to minimize
overhung load. Check to verify that the overhung load does not exceed specifications published in the catalog.
3. High momentum loads: If coasting to a stop is undesirable, a braking mechanism should be provided to the speed reducer output
shaft or the driven mechanism.
The system of connected rotating parts must be free from critical speed, torsional or other type vibration, no matter how
induced. The responsibility for this system analysis lies with the purchaser of the speed reducer.
Installation
1. Mount the unit to a rigid flat surface using grade 5 or higher fasteners. The mounting fasteners should be the largest standard size
that will fit in the base mounting hole. Shim as required under flange or base feet which do not lie flat against the mounting surface.
2. For shipment, pipe plugs are installed in the unit and a vent plug is packed separately. After mounting the unit in
position, remove the appropriate pipe plug and install the vent plug. Failure to vent the unit can cause premature seal wear
or loss of seal and oil. These conditions are not covered by warranty. Check for correct oil level. Contact the Factory for
level and vent recommendations on non-standard mounting positions. Do not blow pressurized air into the hole, and avoid
spraying washdown chemicals directly into the hole.
3. Connect motor to speed reducer.
E Series helical bevel gear reducers will likely backdrive. Use of a brake or external holding device is required if any evidence of
backdriving is not desired.
Special consideration should be given to high inertia loads connected to the output shaft. Consult the Factory for further details.
Do not operate the reducer without making sure it contains the correct amount of oil. Do not overfill or underfill with
oil, or injury to personnel, reducer or other equipment may result.
A unit cannot be used as an integral part of a machine superstructure which would impose additional loads on the unit
other than those imposed by the torque being transmitted either through a shaft-mounted arrangement, and any shaft
mounted power transmitting device (e.g., sprockets, pulleys, couplings).
For safe operation and to maintain the unit warranty, when changing a Factory installed fastener for any reason, it be-
comes the responsibility of the person making the change to properly account for fastener grade, thread engagement,
load, tightening torque and the means of torque retention.
Mounting bolts should be routinely checked to ensure that the unit is firmly anchored for proper operation.
Seals
The Grove Gear line of speed reducers utilizes premium quality seals which are the state-of-the-art in sealing technology. Seals are,
however, a wear item and eventually need to be replaced. Replacement can be easily accomplished by following the steps below:
1. Remove the worn seal without damaging the shaft surface or the seal bore. This can be done by drilling a .062 diameter hole in the
seal casing (being careful not to drill into the bearing behind the seal). Install a #10 sheet metal screw into the hole and pry out the
seal.
2. Clean the seal bore of sealant.
3. Before installing the new seal, use electrical tape to cover any keyways on the shaft to prevent seal lip damage.
4. Grease the seal lips with bearing grease and apply a sealant to the seal bore.
5. Slide the seal into the shaft being careful not to fold the inner lip over on any shaft steps.
6. Press the seal into its bore with a sleeve that presses on the seal casing, being careful to keep the seal square in its bore.
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