Nelson Irrigation Corporation 848 Airport Rd. Walla W
alla, WA 99362-2271 U
A T
el: 509.525.7660 Fax: 509.525.7907 in
[email protected] Web site: www.nelsonirrigation.comLOWER BEARING MAINTENANCE
DISASSEMBLY (LOWER UNIT)
STEP 4
Remo e #7763 Co er from shaft.
Remo e #6997 Seal from co er.
Remo e #6996 Brake Ring and
#7009 Dust Seal from shaft.
Inspect all parts for wear and
replace as required.
REASSEMBLY (LOWER UNIT)
STEP 5
Assemble #7009 Dust Seal onto
#7031 Shaft Assembly. Slide
#6996 Brake Ring onto shaft.
Locate the four studs of the brake
ring in the center holes between
the smaller threaded holes.
STEP 9
Install 7007-001 O-Ring into
Spacer and mount onto assembly.
SEE BACK PAGE FOR PARTS LIST
STEP
Remo e the #6998 Seal. To
remo e the two #6559 Bearings
use a hammer and three blocks
of wood. Lightly tap uniformly
around inner race of bearing until
remo ed. Bearings are remo ed
from opposite sides of the #8472
Housing.
STEP 8
Install #6999 O-Ring in #7003
Retainer an assemble retainer on
shaft. Using metho escribe in
isassembly (Lower Unit) instructions
Step 12, secure bearing shaft from
rotating. Torque Retainer to 95-110
ft. lbs. Apply a light coating of #9673
Silicone Grease to O.D. of Retainer.
Assemble #6998 Lip Seal. Orient
with lip si e out. Metric Torque =
129-149 NM or 13-15 MKG.
STEP 2
The #10083 Retainer Assembly is
remo ed by using spanner wrench.
To hold the #7031 Shaft Assembly
from rotating insert two 5/16-18
bolts (#6635) into shaft top.
Clamp bolt heads into a ise
securely. Remo e retainer and
#8472 Housing from bearing
shaft.
STEP 7
Assemble #6566 Gasket. Press
on #8472 Housing. Fully pack
housing with #6143 Lubricant.
Assemble #6559 Bearing into
housing.
STEP 1
Remo e three #7990 or #7991
bolts from flange. Separate
#8472 housing from #10087
Spacer Assembly. Remo e
#7007 O-Ring from #10087
Spacer Assembly.
STEP 6
Place #6997 Lip Seal into #7763 cover
as shown with Nelson name toward
ball bearing. Pack #6559 earing
with #6143 lubricant or equivalent.
(See Notes on Lubrication on the
front cover.) Press bearing into
#6858 Cover. Slide cover assembly
onto bearing shaft. CAUTION: Do
not get grease on brake surfaces.
To clean plastic brake, use soap and
water (solvents may damage plastic).
Clean #6858 cover with acetone.
6/04
#8472
#10083
#7763
#6997
#6996
#7031
#6996
or
#9492
#7009
#6997
#6559
#6998 #10083
#7007-001
#10087 Spacer Assembly
#7991
or 7990
#10087
#7007
(Bronze Model #9492)
STEP 10
Assemble #8967 O-Ring into the
Flange Adapter. Mount Flange
Adapter using required Bolts.
Torque Bolts to 130-150 inch
pounds.
O-Ring
#8967
