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Description
Cooling Fan Assembly ①
Fan Guard Plate Assembly ②
Fan Blade ②
Fan Guard Cover ②
Mounting Bolt ②
Fan Set Screw ②
Cover Bolt ②
Lockwasher ②
Hex Nut ②
Taper Bushing Assembly. ② ③
① Assembly includes parts listed below marked ②
③ Set screws are included with taper bushing assembly.
BACKSTOPS
WARNING: To ensure that drive is not unexpectedly
started, turn off and lock out or tag power source before
proceeding. Remove all external loads from drive before
removing or servicing drive or accessories. Failure to
observe these precautions could result in bodily injury.
1.
Remove backstop shaft cover and gasket, shown in Figure
10. These parts will not be reused. This cover is directly
opposite the extended end of the input shaft.
2.
Clean the face of the gearbox to remove any gasket
material or contamination from the cover mounting surface.
It is important that contamination not get into the gearbox
or the backstop during the backstop installation/servicing
process.
3.
Face reducer looking at the side from which the cover
was removed. Determine carefully the desired direction
of free rotation. It is important that the direction be
correctly determined because to reverse the direction after
the backstop is installed, it is necessary to remove the
backstop, turn it end-for-end and then reinstall it.
4.
Match the arrow on the backstop inner race to the direction
of free rotation for the desired shaft. Note that reversing the
backstop end-for end changes the direction of the arrow.
The shaft will rotate in the same direction as the arrow on
the backstop.
5.
If the backstop kit has a spacer ring included, install it onto
the shaft first, adjacent to the bearing inner ring.
6.
Install the backstop inner race and sprag cage assembly
onto the shaft. DO NOT remove the cage from the inner
race or the shipping strap from the sprag set at this time.
Insert the key into the inner race and mating shaft keyway.
These parts should slip onto the shaft easily, a light coating
of oil may assist in assembly. Do not use a hammer to
force the installation, damage can occur to the shaft and/
or the backstop. Slide the race against the spacer or the
shaft shoulder and install the retaining ring into the groove
in the shaft. Only use the supplied key, as it is specifically
designed for each backstop.
Figure 11 - Parts Identification
Table 7 – Cooling Fan Part Numbers
Ref. Number
Quantity
TA4207
------
1
904106
1
1
------
2
1
904517
3
1
------
4
4
------
5
2
------
6
4
------
7
4
------
8
4
------
9
1
117162
TA5215
TA6307
TA7315
905106
906106
907106
------
906519
906519
905517
906517
907517
------
906521
906521
------
411294
411294
------
400086
400086
------
411390
411390
------
419010
419010
------
407085
407085
117092
------
------
7.
Apply a thin coating of RTV silicone onto the gearbox
mating surface for the outer race (same as the cover area).
It is important to apply the sealant around the fastener
holes to prevent leakage. Do not allow excessive amounts
of silicone to enter the gearbox or to be applied to other
parts.
8.
Install the outer race by gently rotating it opposite the shaft
rotation while pressing lightly inwards. Do not force the
outer race into position as backstop damage may occur.
Once the outer race is well piloted onto the sprag set,
remove the shipping strap from the sprag set by cutting it,
being careful not to let the outer race back off the sprags.
The outer race should slide easily into position with a slight
turning motion. A light coating of oil on the race inner
diameter may ease installation.
9.
Align the fastener holes in the outer race with the mating
holes in the gearbox. Use the supplied grade 5 fasteners
and lock washers only. Torque the fasteners in an
alternating pattern per Table 8.
Table 8 – Backstop Fastener Torque Values
Reducer Size
TA0107L
TA1107H
TA2115H
TA3203H
TA4207H
TA5215H
TA6307H
TA7315H
TA8407H
TA9415H
TA10507H
TA12608H
9
TA8407
TA9415
TA10507
907106
909106
910106
906519
909519
909519
907517
909517
910517
906521
909521
909521
411294
411294
411294
400086
400086
400086
411390
411390
411390
419010
419010
419010
407085
407085
407085
------
------
------
Fastener Size
Torque in lb-ft
1/4-20
8 – 7
1/4-20
8 – 7
1/4-20
8 – 7
1/4-20
8 – 7
1/4-20
8 – 7
5/16-18
17 – 15
5/16-18
17 – 15
3/8-16
30 – 27
5/16-18
17 – 15
3/8-16
30 – 27
3/8-16
30 – 27
3/8-16
30 – 27
TA12608
912106
912519
910517
909521
411294
400086
411390
419010
407085
------
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