Alcoa BTT20SF User manual

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BTT20SF Cutter and
Installation tool
Assembly

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BTT20SF Cutter
and Installation tool
Installation tool
6.5” O.A.L.
Weight 11 lbs.
2” stroke
Cutter tool
8” O.A.L.
Weight 12 lbs.
2” stroke

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Section 1…………………………………Handle Assembly
Section 2………………………………..Cylinder Assembly
Section 3………………..Limit switch housing Assembly
Section 4…………………………...Cutter Nose Assembly
Section 5……………………..Installation Nose Assembly
Section 6…………………………..Setting the limit switch
Index
BTT20SF Cutter Tool and
Installation tool Assembly

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Section #1
BTT20SF Handle Assembly

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Hydraulic Manifold for the
BTT20SF tool.
Now the Hydraulic hoses can
be screwed into the manifold
using a hydraulic loctite thread
sealer and tightened down.
Slide the handle over the
hydraulic quick disconnects and
up the hoses to the manifold.
Then insert the lemo wire
through the strain relief which is
attached to the alum. Base
plate and feed the wires up
through the handle and attach
the alum. Base plate using two
#10-24x1/2” long BHCS.
CV plugs (CVES2503231A Dia.
.250” short) are put into the
manifold first using a hammer
and the installation tool
Then a 1/16x5/16 socket
pressure plug (3/4 taper) with
blue loctite is screwed into the
manifold.
Installation tool
(CVTS060) required by the CV
manufacture.
Handle Assembly (cont’d)

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The wires, RED and GREEN go
through the handle and manifold for
the micro switch.
Place the handle up onto the
manifold and put the #10-32x3/8”
BHCS into the handle which will
attach the manifold to the handle.
Slide the other half of the alum.
Base plate onto the hydraulic hose
and push into place for the other
two #10-24X3/3” BHCS.
Then the BLACK and WHITE wires
go out through the trigger housing
until the trigger is connected. At this
point you can push the trigger into the
trigger housing hole in the handle.
Handle Assembly (cont’d)

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With the handle attached to the
manifold put a small amount of
lubriplate grease around the holes
in the top of the manifold where
the barrel connectors go.
Then put some lubriplate grease
on the assembled barrel
connectors ( o-rings and back-
up rings) and push carefully into
the holes in the manifold.
Install the second barrel
connector using the same
process as the first.
Handle Assembly (cont’d)

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When sliding the hydraulic cylinder
onto the barrel connectors, be careful
when not to pinch or tear the o-rings or
back up rings.
Attach the hydraulic cylinder to the
handle using a # 10-32x3/8” BHCS.
Put the limit switch rod into the tool
before the puller gets screwed into
the end cap.
Handle Assembly (cont’d)

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Section #2
BTT20SF Hydraulic
Cylinder Assembly
#14
#13
#12
#11
#10
#9
#8
#7
#6
Part No. Industry Standard
Generic Part number
MaterialDescription
Standard Replacement Part Numbers
227Urethaneback-up ring
227Urethaneo-ring
220Urethaneo-ring
220Urethaneback-up ring
227Urethaneo-ring
227Urethaneback-up ring
224Urethaneback-up ring
224Urethaneo-ring
AN19Urethanerod wiper

10
AN-19 Rod wiper
224 O-ring
224 Back up ring
Cylinder
End Cap
227 O-ring
227 back up ring
Cylinder Assembly (cont’d)

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Piston
I.D. O-rings
220 O-ring
220 Back up ring
Apply liberal amount
of lubrication to all
components prior to
assembly.
O.D. O-rings
227 O-ring
227 back up ring
Cylinder Assembly (cont’d)
Cylinder, End
Cap and Piston

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Cylinder Assembly (cont’d)
Slide the piston into
the cylinder, lining it up
with the rod wiper in
the front of the tool.
Press the piston into
the cylinder using a
arbor press until it
bottoms out.
Piston
Cylinder

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Cylinder Assembly (cont’d)
With the piston in place put
the end cap into the rear of
the piston and apply
pressure using a arbor
press.
View of piston after insertion
process completed

14
Apply anti seize to the threads
of the End Cap.
Screw the End Cap into
the cylinder.
Torque the End Cap down to
250’ lbs. of torque.
View of piston after end cap
insertion process completed
Cylinder Assembly (cont’d)

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Section #3
Limit Switch Housing Assembly

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Limit Switch Housing Assembly, (cont’d)
Mount the micro switch to the limit
switch mounting plate using two #2-56
x 5/16 SHCS
Place a .125 x .75 dowel pin and the
actuator into place, making sure the
dowel pin is centered in the housing.
View after assembly

17
Limit Switch Housing Assembly (cont’d)
Use a #8-32 x ¼ BHCS on each side
of the housing to lock the dowel pin
into place.
LC-022BC-02M Lee
Spring
#6 – 32 x ½
SHCS
Now with the spring and SHCS
in place attach it to the
housing.

18
Limit Switch Housing Assembly (cont’d)
View of switch plate attached
to the housing.
Now place the #8-32 X 7/8 lock
down SHCS into the bottom of
the housing and into the #8 -32
nut and slightly tighten.
#8 SHCS
#8 nut

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Limit Switch Housing Assembly (cont’d)
Now run the red and
green wires through the
housing, as shown,
Using two #10 – 32 x .375
SHCS tighten the housing to
the handle assembly.

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Limit Switch Housing Assembly (cont’d)
Solder the wires as shown in photo.
Red to common.
Green to Normally closed.
Cable tie the wires.
Put rear cover on the tool.