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Easily remove and replace the pinion on your V3-12! Besser now has available a locking assembly for the
V3-12 pinion shaft and gear which is interchangeable on all V3-12 concrete products machines. A description
of installation follows.
Install shaft assembly in machine and tighten bearing caps. Apply pressure to drive end of shaft (pulley end)
to assure shaft if fully seated against inner bearing race. Slide pinion gear and locking device on the shaft. Use
tool No. 467006 to make sure the shaft is seated to bearing and pinion is tight against spacer. Then tighten the
locking device per instructions enclosed in the package. These instructions are on a 8-1/2" x 11" sheet, located within
the shipping box, entitled "Installation and Removal Instructions for Series B-112 Locking
Assemblies" and are listed on the back of this Service Bulletin.
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Figure 1 - View of old style pinion. |
Figure 2 - View of the locking assembly.
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Figure 3 -
View of new pinion with the new locking assembly. |
Figure 4 -
Tool Number 467006 Torque to 90 ft lbs (135 Newton Meters) |
| KEY |
PART
NUMBER |
PIECES |
DESCRIPTION |
|
464229 |
|
Pinion
Shaft Assembly (Includes Keys 1 through 13) |
| 1 |
114289 |
1 |
Locking
assembly |
| 2 |
464228 |
1 |
Pinion -
16 tooth - 20 degree pressure angle |
| 3 |
016700 |
2 |
Bearing
spacer |
| 4 |
16698J0010 |
2 |
Closure-sub-assembly |
| 5 |
081434 |
1 |
Fafnir
bearing |
| 6 |
016699 |
2 |
Inside
bearing retainer |
| 7 |
464227 |
1 |
Shaft |
| 8 |
446624 |
1 |
Tubing-sub-assembly |
| 9 |
088036 |
6 |
Hex head
cap screw - 1/2 x 2-1/4 |
| 10 |
087806 |
6 |
Hex nut -
1/2" - 13 N.C. |
| 11 |
087881 |
6 |
Lockwasher
- 1/2" |
| 12 |
081413 |
1 |
Fafnir
bearing - No. 215W |
| 13 |
112161 |
1 |
Hex key -
6mm |
|
467006 |
1 |
Pinion
loading tool sub-assembly |
INSTALLATION AND REMOVAL INSTRUCTIONS FOR SERIES B-112 LOCKING ASSEMBLIES
Series B-112 locking assemblies fit straight-thru hub bores. Their unique design assures
a concentric fit without the use of pilot bushings or a pre-centering hub section.
INSTALLATION
Locking assemblies are supplied ready for installation. However,
if for some reason they have to be disassembled, make sure that
in addition to lined-up slits in all collars, near and far-side clamp
collars are not reversed. They are assembled correctly only if there are
no holes or threads behind taps in clamp collar item No. 1.
Likewise, there must be no threads behind taps in center collar item No. 3
as illustrated in Fig. 2. The frictional torque capacity of these devices
is based on a coefficient of friction of 0.12 for lightly oiled
screw, taper, or shaft and bore contact
areas. Therefore, it is important not to use Molybdenum Disulfide, e.g.
Molykote, Never-Seeze or similar lubricants in any locking
assembly installation.
- Make sure shaft and bore contact areas are clean and
lightly oiled.
- Loosen all locking screws by a minimum of 2 turns and
transfer at least 2 screws to push off threads in clamp collar item no. 1
and center collar item no. 3 in order to disengage tapers for
easy installation of locking assembly (see Fig. 2.).
- After installation of locking assembly, relocate locking
screws used for separation of collars.
- Hand tighten connection and assure that collar item No. 1
is parallel with face of part to be attached to shaft.
- Use torque wrench and set it approximately 5% higher than
a specified torque Ma. Torque screws in either a clockwise
or counter clockwise sequence, using only 1/4 turns (It is
not necessary to tighten in a diametrically opposite pattern) for
several asses until 1/4 turns can no longer be achieved.
- Still apply overtorque for 1 to 2 more passes. This is required to
compensate for a system-related relaxation of locking
screws since tightening of a given screw will always relax
adjacent screws. Without overtorquing an infinite number of passes
would be needed to reach specified tightening torque.
- Reset torque wrench to specified torque and check all
locking screws. No screw should turn at this point, otherwise repeat
step "6" for 1 or 2 more passes. After torquing locking assembly,
wait for 30 minutes, then retorque to specified torque value to
ensure the locking assembly has not loosened. It is not necessary to
re-check tightening torque after equipment has been in operation.
NOTE: In installations subjected to extreme corrosion, the slits
in clamp collars item "1" and "2" as well as in center collar item
"3" should be sealed with a suitable caulking compound or otherwise.
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LOCKING ASSEMBLY |
SCREW SIZE
Metric Din912
Grade 12.9 |
Tight Torque
M
ft-lb |
| METRIC
SIZES |
INCH
SIZES |
| 45x75
to 65x95 |
1-1/2
to 2-9/16 |
M8
x 50 |
30 |
HEX BIT SOCKET SIZES
RECOMMENDED FOR ASSEMBLY AND REMOVAL
REMOVAL (refer to fig. 2)
IMPORTANT! Make sure ends of locking screws used for
removal are ground flat and ends are slightly chamfered to eliminate
damage to screw and collar threads during pushoff.
- Check to assure that axial movement of clamp collars
- necessary for release of connection - is not restricted.
- Remove all locking screws and transfer some into all
push-off threads in clamp collar item "1".
- Release collar "1" by progressively tightening all
push-off screws. Typically, the push-off screws appear to be
completely tight after just one pass of tightening without any
noticeable separation. Although it seems that screws can not be
tightened further, several more rounds of torquing in a clockwise (or
counter clockwise) sequence actually add more push-off force to
the system and ultimately release part of the front collar.
Afterwards, only the screws which are still tight, should be tightened
further until complete dismounting is achieved.
- Transfer locking screws used for dismounting of collar "1" to
all push-off threads in center collar item "3". Release collar "2"
by repeating procedures outlined in Step 3.
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