1.
PRODUCTDATA
ServiceInstructions
Oil LubricatedSeries
'51o',,'550", "600", "810", *850", "860", u1210",
"1250","1260",
"1400"
and ,.RAC
1800"
Air & Gas,Outlet
Driven
Referto25.41.30forstandard
installationandoperating
instructions.
Follow
motormanutacturer's
instructionsfor
tre motor,and couplingmanufacturer's
instructions
for the coupling
(Mostgeartype couplings
require
lubdcation).
With beltdriven
machines,sheaves
must
be
well
alignedand
proper
belt
tension
maintained
to
prevent
sxcessive
slip.
Always
use
matchedbelts
for
multiple
beltdrives.Check
belt
tension
with
tensiometer.
Partnumbersbelow
refer
tostandard
Repair
PartsList25.41.30.
Toremovefreebearing
(drive
end):
A. Remove
motorif
directdriveunit.
B. Pullcoupling
half.Donot
knock
or
pry
it
otfshaft
(lf
a
press-fit
coupling-noset
screws-heatingto
212'F.
should
permit
removal).lf
the
machineis
beltdriven,
remove
the
driven
sheave.
C. Removeoilerbottle
(ltem
#30).Also
removemicrometerlevelingrodlocatedlooseinside
oiler
base.Drain
oilby
removingthe
magnetic
pipeplug
(ltem
tf9)at
bottomofoil
reservoir
(ltem
#25).
D. Removeoil
reservoir
cap,
gasket,
(bearing
locknut,
&lockwasher-
"1400'&
"RAC1800"
only),oilslinger,
bearingspacer&
(lockwasher-
"510"-"1260"
only)
(ltems
#6,20A,23,24,21,
5&24
respectively).
Loosen
bolts
holding
labyrinth
(ltem
#'10)
orcarbon
ring
seal
(ltem
#10A).
E. Removetheoil
reservoir
(ltem
#25)and
gasket
(ltem
#20).
For
"510"through
''1260'
machines,
asetofcap
scra,vsconnected
internally
throughthe
backoftheoil
reservoirfasten
it
to
the
bearinghousing.F0r"1400"
&"1800"machines,
unfasteningthereservoircapalsounfastens
the
oilreservoir.
F. Rsmovecap
screws
holding
bearing
housing
(ltem
#3)tooutlet
head
(ltem
#17).
G. Attach
puller
to
bearinghousing.Pull
the
housing,bearing,wavy
spring
washer
and
head
gasket
(ltems
#3,
26,
19,
and
18respectively)
and
for"510'
through
'1260"
machines
a
grease
slinger
(ltem
#27A)off
shaft.
Do
not
use
hammer
or
wedges
to
pry
housing.
H. Remove
bearing
(ltem
#26)
wavy
spring
washer
(ltem
#19)
and
grease
slinger
(ltem
#27A)
("510'-
'1260"
only)
fromhousing
(ltem
f3). lfnecessary,
usingextremecare,
tap
bearingoutfrom
backof
housing.
I Clean
parts
thoroughly.
Keep
coveredand
protected.
lf
oilslinger
(ltem
#21)or
grease
slinger
(ltem
#27A)
is
damagedorbent,
replacewith
anew
one.
Toinstallfree
bearing:
A. Boltbearing
housingfirmly
tooutlet
head.
Beabsolutely
certaintoorient
the
bearinghousingwith
theoil
returnhole
atthebottom.Tighten
boltsslowlyandevenly.
Alternatefrom
onebolttotheboltopposite
to
prevent
cocking.
lfgasket
(ltem
#18)is
damaged,
replacewith
neur
oneofidentical
specifications.
Place
wavy
spring
washer
(ltem
#19)against
housing
shoulder
&
for
"510'
-'1260"
machines
placegrease
slinger
(ltem
#274)onshaft.
B. Tofacilitatereplacing
thebearing
(ltem
#26),
lightly
oilthebearing
housing
bore
andtheshaftseat.
Alight
coat
of
oil applied
to
all
surfacesofthebearingalso
helpswith
assemblyand
protects
thebearing
from
damageunderthe
weight
ofthe
rotor.
Usespecialbearingdrive
tools,
availablefrom
Lamson,
to
mountnew
bearing
(ltem
#26).
Be
certainthat
bearing
is
per
Lamson
Corporation
specifications.
Exercise
extremecare
todriveboth
inner
andouter
races
simultaneously.
Avold
strikingballsorretainer
ordamaging
races.
Use
clean
toolsand
keep
bearing
absolutely
free
ofdirt.
When
tapping
on
thedrivetool,keeprotatingbetween
tapsand
supportshaftaxiallyat
end
to
prevent
damage
to
thrustbearing.
Put
on bearing
lochrasher
(ltem
#24)('510"-
'1260'
only)againstthebearing.
Slip,orscrewontightly,
bearingspacer
(ltem
#5)
ontoshaft
and
againstthe
locf$asher
orbearing.
The
end
ofthebearingspacer
wlh ths
lip
or
holesmustface
away
from
bearing.
Lockin
place
with
the
loch^,asher
("510'-
"1260"
only).
Mount
oil
reservoir
(ltem
#25)
with
gasket
(ltem
#20A)tobearing
housing
(ltem
#3).lfgasket
is
damaged,
replacewithanewone
ofidentical
specifications.
Fasten
oilslinger
(ltem
lt21)tobearingspacer
withcap
screws&lockwashers
or
place
oilslingeragainst
Spacer
withl.D.of slingerover
thelip of thespacer.
Puton bearing
lockwasher
andlocknut
(ltems
lf24and
23)
("1
400'
and
"RAC1
800"only).
Tightendown
firmly
andsecure
locknutwithlockwasher.
z
3.
c.
D.
E.
uffiil
conoratlon
Sr\PE1880
.o. Box 4857 SYRACUSE.
NA ' YORK t@l
nO4gF5500
. TEL€X937215' FAX(3I5).t33-5'151
Iloll'fR.s,'
E\fi.it'.f7&t.s
25.51.30REV.4
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