Aero-motive Woodhead BF Series User manual

SM112001 REV. G
Page 1 of 4
©Woodhead Company Apr-20
BF Series Balancer
SERVICE
MANUAL
IMPORTANT SAFETY INFORMATION
Please read this manual carefully and follow its instructions. Improper use or failure to follow these instructions could
result in serious injury, death or property damage. Operators should be instructed in the safe and proper use and
maintenance of this product. Keep this manual for future reference. All reference numbers are located on page 5.
The following safety precautions call attention to potentially dangerous conditions.
DANGER:
Immediate hazards which WILL result in severe personal injury or death.
WARNING:
Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION:
Hazards or unsafe practices which COULD result in minor personal injury or product or
property damage.
INSTALLATION
WARNING:
Main support device must have break strength exceeding five times weight of load.
Hazards or unsafe practices COULD result in severe personal injury or death.
CAUTION:
Use new cotter pin when re-assembling clevis pin. Hazards or unsafe practices COULD
result in minor personal injury or product or property damage.
MOUNTING
Install the balancer support device directly over work
area. (See illustration). Attach balancer to main
support with swivel fork and clevis pin. Secure clevis
pin with washer and cotter pin.
SECONDARY SUPPORT CHAIN
A hole and pin is provided at side of housing to install
a secondary support cable. All balancers mounted
over head must have a secondary support cable to
protect personnel in case of structure or mounting
component failure. Attach one end of secondary
support cable to secondary support point on balancer.
DANGER:
A secondary support chain is required for all objects mounted over overhead to prevent
them from falling. Immediate hazards WILL result in severe personal injury or death.
Attach other end of secondary support chain or cable to a support component other than that which
supports balancer. Chain or cable should allow balancer to drop no more than 6 to 12 inches if
primary connection is lost. A secondary support cable is offered as an accessory.
ADJUSTMENT
CAUTION:
Do not pull cable down to tool clip. Raise tool to clip. Hazards or unsafe practices COULD
result in minor personal injury or product or property damage.
TOOL ATTACHMENT
Lift the complete tool (including any hose, cable, fittings and attachments) up to the tool clip. After tool is
attached, make sure the retaining latch on tool clip has snapped back to the closed position.

SM112001 REV. G
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©Woodhead Apr-20
SPRING TENSION ADJUSTMENT
CAUTION:
Do not push tension lock lever without placing wrench onto mainshaft first. High spring
torque will turn mainshaft rapidly clockwise. Hazards or unsafe practices COULD result in
minor personal injury or product or property damage.
NOTE: Do NOT over-tension balancer main spring. This will reduce cable travel and spring life.
NOTE: If drum locks up (cable will not pull out) when reducing spring tension, increase tension until
automatic lock disengages. (See Automatic Lock)
Observe following before making spring tension adjustments:
Tool and all accessories are attached to tool clip.
Tool will lower if the weight of tool exceeds tension adjustment of
balancer mainspring.
If cable stop is tight against cable guide prior to adjustment, there
is too much tension on balancer mainspring.
To increase spring tension, turn mainshaft with wrench ¼ turn (one
click at a time) in a counter-clockwise direction ( “+” symbol on case).
Repeat until desired tension is achieved. To reduce tension, turn
mainshaft with wrench in counter-clockwise direction until tension lock
lever disengages. Hold tension lock lever in disengaged position and
carefully allow mainshaft to slowly unwind clockwise.
Repeat until desired tension is achieved.
CAUTION: Reducing cable tension below balancer minimum
rating or releasing cable with no load attached may cause cable
to jam inside.
CABLE STOP ADJUSTMENT
NOTE: Moving cable stop and bumper closer to the cable guide will shorten active travel of cable.
Make all cable stop adjustments after tool and accessories have been attached to tool clip and after
adjusting spring tension. (See Spring Tension Adjustment). Loosen two hex nuts and machine screws.
Slide cable stop and bumper up or down on cable so that tool is positioned at desired working height.
Tighten loosened hardware to hold cable stop at set position.
AUTOMATIC LOCK
WARNING:
Never remove spring from drum and spring assembly. Replacement springs are sealed for
safety. Hazards or unsafe practices COULD result in severe personal injury or death.
If tension is reduced to below rated range, automatic lock will engage and prevent cable drum from
turning. Increase tension until automatic lock disengages. If a spring should break, automatic lock will
engage to prevent drum from turning. Lock will disengage after new spring assembly is installed.
SERVICE
TOOL REPLACEMENT
When replacing tool and attachments, make sure cable is fully retracted. (See Tool Attachment).
DRUM & SPRING ASSEMBLY REPLACEMENT
Remove balancer from service and remove all spring tension from balancer. (See Spring Tension
Adjustment). Remove two screws and cable guide. Remove four screws and nuts. Remove rear case
assembly & retaining ring from mainshaft. Remove mainshaft, hub and tension lock and cable assembly
with all attached parts from drum and spring assembly. Remove cable assembly from old drum and
spring assembly. Attach cable assembly to new drum and spring assembly (See Cable Replacement).
Reassemble unit in reverse order. Place balancer back in service and attach tool. (See Tool
Attachment). Set spring tension with tool and attachments in place. (See Spring Tension Adjustment.).
CABLE REPLACEMENT

SM112001 REV. G
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©Woodhead Apr-20
CAUTION:
Do not disassemble balancer without reducing all spring tension first. (See Spring Tension
Adjustment). Also, do not adjust mainspring tension until tool and attachments are
suspended from balancer. Hazards or unsafe practices COULD result in minor personal
injury or product or property damage.
To replace cable, remove balancer from service and remove all
spring tension. (See Spring Tension Adjustment). Remove two
screws at cable guide, four (4) screws and nuts. Remove case
rear assembly, auto stop shaft, auto stop with compression spring,
and cable assembly. Remove cable guide, bumper, cable-stop,
hex nuts, machine screw and tool clip from old cable assembly.
Attach these items to the new cable assembly. Place the swaged
cable assembly end into the slot. Reassemble unit in reverse
order. Place balancer back in service and attach tool. (See Tool
Attachment). Set spring tension. (See Spring Tension Adjustment)
PARTS REPLACEMENT
When ordering replacement parts, always include the balancer model number and serial number.
All parts shown on parts list are replaceable in the field without special tools.
PREVENTATIVE MAINTENANCE
The balancer is designed to require little maintenance. Replace all worn parts immediately. The balancer
is lifetime lubricated at the factory. No additional lubrication is required.
Cable Assembly
Check for wear on hook. More than 10% wear on hook or damage to gate requires replacement.
Check cable-stop and swage fitting next to hook. Cable damage or fraying indicates need for new cable.
Check wears along entire cable length. Drag clean rag along cable. If frayed, replace.
Mounting
Check tightness of mounting bolts and soundness of mounting connection.
Check mounting shackle for wear. More than 10% wear requires replacement.
Check condition of safety cable and attachment points.
Frequency of Inspection: Depends on intensity and frequency of use. In most cases monthly review of
upper mounting shackle and weekly inspection of cable is adequate.
REPLACEMENT PARTS

SM112001 REV. G
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©Woodhead Apr-20

SM112001 REV. G
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©Woodhead Apr-20
Reference
Number
Part Number
Qty.
Description
1
C20850137
4
M5 SEM (Screw with washer)
2
01235P0008
1
Clevis pin
3
H22510061
1
Case rear assembly
4
M15120003
1
Extension spring
5
M26830001
1
Mainshaft
6
M08720004
1
Hub and tension lock
7
H42160027
1
Drum and spring assembly (BF(L)-6 Orange) Includes items 26 & 27
H42160023
1
Drum and spring assembly (BF(L)-9 Green) “
H42160024
1
Drum and spring assembly (BF(L)-13 Red) “
H42160025
1
Drum and spring assembly (BF(L)-18 White) “
H42160026
1
Drum and spring assembly (BF(L)-24 Blue) “
8
C01880416
1
Retaining ring
9
M08710005
1
Ratchet lever
10
M15120004
1
Extension spring
11
H22510079
1
Case front
12
00126P0050
2
Flat washer
13
00228P0011
2
Cotter pin
14
C22180115
4
M5 hex nut
15
01235P0009
1
Clevis Pin
16
H16510014
1
Swivel fork
17
C01700119
1
Retaining ring
18
M67310001
1
Cable guide
19
C03550100
2
M5 CTSK overall HD screw (48-2)
20
1003100000
1
Bumper
21
1361400000
2
Cable stop
22
00002P0202
2
Machine screw #6-32
23
H13120009
1
Cable assembly
24
01146P0015
1
Tool clip
25
00151P0015
2
Hex nut #6-32
26
M04600000
1
Drop Stop
27
M25360212
1
Drop Stop Screw
KIT B
H13760000
1
Secondary support cable
KIT A
H13120012
1
Working cable assembly complete (Items 20-25 above)
Woodhead L.P.
Woodhead Canada Ltd.
Northbrook, IL USA
[phone] FAX: [phone]
www.aeromotive.com [e-mail]
Mississauga Ontario Canada
[phone] FAX: [phone]
www.woodhead.ca