Aimco Brakes Assembly System Spring Balancer TW3 TW5 Operations Manual

							TW-Series
Spring Balancer
Operations  Manual
MODELS  TW-3 and TW-5PO Box 1\f4\f0, Portland OR 97\b9\b-04\f0  • 800-85\b-13\f8 • Fax 
800-58\b-9015
www.aimco-global.com     
						

							2TT
AABBLLEE  OOFF C
COONNTTEENNTTSS
P PA A R R T TS S  B B R R E EA A K K\b \b O O W W N N \b \b R R A AWW \f \fN N G G
Parts Breakdown Drawing ..................\5..................\5..................\5..................\5.......2
Parts List ..................\5..................\5..................\5..................\5..................\5..............3
Operating Procedures
Selection and Installation ..................\5..................\5..................\5............\f
Adjustment of Spiral Ring ..................\5..................\5..................\5............5
Disassembly / Assembly 1.Replacement of Cable ..................\5..................\5..................\5..............6
2.Disassembly / Assembly ..................\5..................\5..................\5...........6
3.Load and Operation Inspection ..................\5..................\5..................\5.6
Inspection and Repair ..................\5..................\5..................\5..................\5.............7
Service ..................\5..................\5..................\5..................\5..................\5..............7
Specifications ..................\5..................\5..................\5..................\5..................\5......7     
						

							3
INDEX NO. DESCRIPTIONPART NO.
1 Case3\b\b1
2 Ratchet3\b\b2
3 Crossrecessed flat head machine screw SC61\f
Hanger Set3\b\b\f
\f Hanger 
5 Hanger stopper
6 Hanger spring
7 Buttonhead rivet
8 Hanger shaft3\b\b5
9 Buttonhead rivetRR318
1\b Spindle3\b\b7
11 Drum3\b\b8
12 Spiral spring (TW3)3\b\b9
12 Spiral spring (TW5)5\b\b9
13 Drum Cover3\b1\b
1\f Crossrecessed flat head machine screw SC512
15 Cover (TW3)3\b12
15 Cover (TW5)5\b12
16 Flattoothed lock washerWT5
17 Crossrecessed flat head machine screw SC516
Cable set3\b15
18 Cable 
19 Thimble
2\b Spring hook
21 Safelock tube
22 Aluminum lock tube
23 Collar3\b16
2\f Shock absorber3\b17
25 Cable set boltPH1/8
Note:  When  ordering  spare  parts,  please  specify  index  number,  part  name,  and
applicable model.
P P A A R R T TS S  L L \f \fS S T T   
						

							4
S
SE
EL
LE
EC
CT
T\f
\fO
ON
N A
AN
N\b
\b \f
\fN
NS
ST
TA
AL
LL
LA
AT
T\f
\fO
ON
N
Ha nging Hook:
Use  this hook to  lower the main
hanger so that it d oes not colli de
with another h anger when laterally
travelled by trolley, etc.
Main Hanger:
The main  hanger must  be a ble to
follow the ob lique operation and its
movement  must not be  hampered.
Further , it must not get  off and drop
even if it suffers a spring�up reaction.
Note: Use the auxiliary  hanger for the
protective purpo se.
Selection Example:
Weight +Weight =Gross
of tool of access Weight
3 kg +\b kg =4 kg
(Not th e total wei ght of the  air hose but it s
weight to  be hung by  the balancer should be
added to the weight of  the tool.)
In the example abo ve, select TW�5 with the ca �
pacity ran ge of 2.5  � 5.\b kg. See page 7 for ca �
pacity specifi cation s.
Note: When the weight o f a hung load  and the
hanging  tool applies to two  models, select the
larger model.
Auxiliary Wire:
Provide slack i n this wire
so that the mai n hanger
can rotate freely and follow
the oblique op eration.
Air Hose:
Weighs 1 kg. This is
the weight of  the air
hose to  be hung by
the balancer.
Tool:
Weighs 3 kg
Fig ure \b
O
OP
PE
ER
RA
AT
T\f
\fN
NG
G P
PR
RO
OC
CE
E\b
\bU
UR
RE
ES
S   
						

							5
A
A\b
\bJ
JU
US
ST
TM
ME
EN
NT
T O
OF
F S
SP
P\f
\fR
RA
AL
L R
R\f
\fN
NG
G
Ad just the spiral spring by  tu rn ing  the  spindle (1\b)  to ensure
that it conforms  to the hung load. Turn it to the right to incr ease
the load,  and to  the left to decrease the loa d (Fig. 2) Note that
the factory sett ing is in the  middle of t he capacity  range. 
Note: The spring should  be set t o the exact cap acity level. Setting
the spring in excess of t he cap acity range will caus e it to be
tightened mor e than required, making  it difficult to obtain the
desired  stroke, and possibly s hortening its li fe. If the s pring is set
under ca pacity, the c able will not  be fu lly wou nd, pr oviding a
shorter strok e and an improper  balance.Ratchet (2)
Spindle (\b0)
Load incr eases
Load decreases Hex�rod spanner (6 mm)
O
OP
PE
ER
RA
AT
T\f
\fN
NG
G P
PR
RO
OC
CE
E\b
\bU
UR
RE
ES
S
Figure 2   
						

							6
R RE EP PL LA A C CE EM M E EN N T T O O F F C C A A B B L LE E
1. With the cable wound, remove the hung load and
hanging tool from the spring hook (2\b)
Note: This  procedure  must  be  strictly  observed  to  ensure
the  safety  of  the  operator,  because  if  the  hung  load  and
hanging  tool  are  removed  with  the  cable  extended,  the
cable will rapidly wind up, which may be very dangerous.
2. Loosen the spiral spring (12) by turning the spindle (1\b) to the left until the cable is sent out and
the  cable  set  bolt  (25)  appears  at  the  position
shown in Figure 3.
3. Remove the cable set bolt, and then remove the cable from the drum (11)
\f. Remove the collar (23) and the  shock absorber (2\f) from the cable and set them to a new cable.
5. Attach the new cable to the drum by firmly tight ening the cable set bolt.
6. Tighten the spiral spring by turning the spindle to the right.  Adjust the tightness of the spring to en
sure that it conforms to the hung load.
\b \b\f \fS S A A S SS SE EM M B BL LY Y  / /  A A S SS SE EM M B BL LY Y
When the balancer is to be disassembled, perform the following procedures by referring
to the parts breakdown drawing (page 2).
1. Remove the load and hanging tool from the spring hook (2\b). Remove the balancer from the beam of the trolley.
2. Remove the cable (18) from the drum (11) (Refer to directions for replacing the cable on page 6)
3. Remove the cover (15). Take off the drum cover (13) the spiral spring (12) and the drum (11) together from the case (1).
\f. Remove the drum cover from the drum and take out the spiral spring. Note: When removed, the spiral spring will rapidly expand  use proper care.
5. Remove the spindle (1\b) from the case.
6. For assembly, reverse the steps in disassembly directions. 
L L O O A A\b \b  A A N N \b \b O O P PE ER R A AT T \f \fO O N N \f \fN N S SP PE EC CT T \f \fO O N N
1. Wind the spiral spring by turning the spindle to the right.
2. Hang the balancer and adjust the spiral spring. Attach the weight within the proper ca
pacity range (the middle load of the capacity) to the spring hook (2\b). Adjust the spiral
spring  by  performing  the  operation  for  all  the  strokes.  (It  will  make  the  adjustment
easier if the set load of the balancer is p\5reset for reassembling.) Drum (\b\b)
Spindle (\b0)
Cable Set Bolt (2\f)
Cable (\b8)
Shock Absorber (24)
Collar (23)
Spring Hook (20)
Figure 3
A A
S SS SE EM M B BL L\f \fN N G G A A N N \b \b \b \b \f \fS S A AS SS SE EM M B BL L\f \fN N G G   
						

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Perform monthly inspection in order to prevent the balancer from dropping.
Check the balancer for:Loose bolts
 Worn hanger and/or spring hook
 Worn and damaged cable (check whether any wire threads
have unravelled, or if the terminal is worn and/or damaged).
\f \f N N S SP P E EC C T T\f \fO O N N A A N N \b \b R R E EP PA A \f \fR R
If the balancer is out of order, please contact an appropriate agent for repair.
S S E ER R V V\f \fC C E E
MODEL CAPACITY CABLE TRAVEL NET WEIGHT
MINIMUM MAXIMUM
lb kg lb kg ft m lb kg
TW\b 1.1 \b.5 3.3 1.5 3.3 1.\b 1.1\b \b.5
TW3 2.2 1.\b 6.6 3.\b \f.3 1.3 3.\b8 1.\f
TW5 5.5 2.5 11.\b 5.\b \f.3 1.3 3.3\b 1.5
S SP P E EC C\f \fF F \f \fC C A AT T \f \fO O N NS S 
						

							      Corporate Headquarters 
1 0000 SE Pine Street 
Portland, OR  97216 
800 -852
-1368
FAX 800- 582-9015
www.aimco-global.com Ave. Cristóbal Colon 14529 
Chihuahua, Chihuahua.  311
25 
Mexico 
011 -52-(614) 380-1010
FAX 011- 52-(614) 380- 1019 LIT-MAN
320  Rev. 
03/2016  Printed in USA  ©2016 AIMCO