Owners Manual • Rexnord
®
Planetgear
™
7000 Speed Reducers
(Page 24 of 33)
Size Mercury/Mars
158-110
10/21 (Supersedes 01/15)
© Rexnord Corporation. All Rights Reserved.
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Quadruple Reduction disassembly - Remove input
assembly (1) from maincase (10). Remove input gear
(2), first stage carrier (3), second stage sun gear (4),
second stage carrier (5), third stage sun gear (6),
third stage carrier (7), last stage sun gear (8), and last
stage carrier (9). Remove output assembly (11) from
maincase.
QUADRUPLE REDUCTION
11
6.6 GEAR TRAIN ASSEMBLY
The gear train can be assembled in the reverse order of
disassembly. Reference
Section 6.5
.
NOTE
: It is recommended that the output subassembly
be installed first, then the gear train and finally the
input subassembly. Unit should be assembled in
the vertical position, with input shaft up.
6.7 FAN AND SHROUD INSTALLATION
6.7.1 SHROUD CLIP INSTALLATION
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Remove mounting bolts from input subassembly /
maincase in the following locations and install shroud
clips (reference
Figure 6.7.1a
).
= CLIP LOCATIONS
12 O’CLOCK
POSITION
MERCURY/MARS
INPUT SUB-ASSEMBLY
Figure 6.7.1a Location of Shroud Clips
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Align shroud clip with center of reducer (reference
Figure 6.7.1
b) and tighten bolts to torque requirements
of
Table 18
, Page 29.
CENTER
OR REDUCER
BOLT
CLIP
Figure 6.7.1B Location of Shroud Clips
6.7.2 FAN INSTALLATION
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From
Figure 6.7.2
, determine the distance from the end
of the input shaft to the front edge of the fan.
NA
FAN
INPUT
SHAFT
REDUCER
SIZE
NA
Inch Shaft
NA
Metric Shaft
Mercury
1.88”
48 mm
Mars
2.38”
60 mm
Figure 6.7.2 Dimensions for Location of Fan
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Position the fan on the input shaft to the determined “NA”
distance.
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Locate the setscrew which is 90° from the keyway to the
spotting hole on the shaft.
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Tighten setscrews (2). Reference
Table 18
, Page 29 for
torque requirements.
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Install key.
6.7.3 FAN SHROUD INSTALLATION
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Position the fan shroud so that it fits tight over the
shroud clips. Check to insure that when the input shaft
is rotated, the fan does not interfere with the shroud.
Gently bend the shroud clips to position the shroud.
NOTE
: The fan shroud should be predrilled for the shroud
clips.
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Using bolts and washers that were removed originally
during disassembly, fasten the shroud to the shroud
clips. Once fastened, rotate input shaft to insure no
interference with fan.
