Harken Radial Winch 70.2 ST Manual

Radial Winch 70.2 ST
Installation and Maintenance Manual
MRW-G

2
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Index
Introduction 3
Technical characteristics 3
Weights 3
Maximum working load 3
Outline 3
Installation 4
Installation Procedure 5
Positioning the self-tailing arm 8
Maintenance 8
Washing 8
Maintenance table 8
Disassembly procedure 8
Exploded view with maintenance products 12
Assembly 13
Harken®limited worldwide warranty 14
Ordering spare parts 14
Exploded view 15
Radial Winch 70.2 STA, STC, STCW 15
Parts List 17
Radial Winch 70.2 STA 17
Radial Winch 70.2 STC 18
Radial Winch 70.2 STCW 19
Exploded view 20
Radial Winch 70.2 STBBB, STCCC 20
Parts List 22
Radial Winch 70.2 STBBB 22
Radial Winch 70.2 STCCC 23

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Introduction - Technical characteristics - Outline
Introduction
This manual gives technical information on winch installation and maintenance, including
disassembling and reassembling.
This information is DESTINED EXCLUSIVELY for specialised personnel or expert users.
Installation, disassembling and reassembling of the winch by personnel who are not experts may
cause serious damage to users and those in the vicinity of the winch.
Harken®accepts no responsibility for defective installation or reassembly of its winches.
In case of doubt the Harken®Tech Service is at your disposal at techser[email protected]
This Manual is available only in English. If you do not fully understand the English language, do
not carry out the operations described in this Manual.
Technical characteristics
Power ratio Gear ratio
1st speed 22,20 : 1 5,70 : 1
2nd speed 72,00 : 1 18,50 : 1
The theoretical power ratio does not take friction into account.
Weights
ST A version ST C/CW versions ST BBB/CCC versions
Weight (Kg) 11,3 15,1 16,7
Versions: A = drum in anodised aluminium; C = drum in chrome bronze; CW = chrome/white;
BBB = all bronze; CCC = All-Chrome bronze
Maximum working load
WARNING!
The maximum working load (MWL) for the 70.2 ST Radial Winch is 2700 Kg (5952 lb)
Subjecting the winch to loads above the maximum working load can cause the winch to fail or
pull off the deck suddenly and unexpectedly during high loads causing severe injury or death.
Outline
257
Ø131
115
Ø240
257
Ø131
115
Ø240
257
Ø131
115
Ø240
257
Ø131
115
Ø240
257
Ø131
115
Ø240
181
69
394
140
130
234
Line entry height

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Installation
The winch must be installed on a at area of the deck, reinforced if necessary to bear a load equal
to at least twice the maximum working load of the winch.
It is the installer's responsibility to carry out all structural tests needed to ensure that the deck can
bear the load.
Harken®does not supply the screws needed to install the winch since these may vary depending
on the deck on which it is to be installed.
It is the installer's responsibility to choose the correct screws taking account of the loads they will
have to bear.
Harken®assumes no responsibility for incorrect installation of its winches or for an incorrect choice
of mounting screws.
DANGER!
Incorrect installation of the winch may cause severe injury or death. Consult the yard that built
the boat in the case of doubt over the correct positioning of the winch.
WARNING!
Failure to use the correct number and type of mounting fasteners or failure to ensure the
correct deck strength can result in the winch pulling off the deck suddenly and unexpectedly
during high loads causing severe injury or death.
WARNING!
Verify the entry angle of the sheet.This must be 8° with tolerance of
±2°, to avoid sheet overrides and damaging the winch or making the
winch inoperable leading to loss of control of the boat which can lead to
severe injury or death.
WARNING!
Mount the winch on the deck so that the drive gear is positioned where
the sheet enters the winch drum.
Incorrect position of drive gear can weaken winch leading to failure
which can cause an accident leading to severe injury or death.
Once you have chosen the correct mounting position for the winch on the deck proceed with
installation.
Installation Procedure
To install the winch you must remove the drum and use Socket Head (SH) bolts.
Tools needed: One medium at-bladed screwdriver
To identify the various parts, refer to the exploded view at the end of this Manual.
Installation
drive gear
SHEET
8°

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Torque to apply when assembling
1. Unscrew the central screw ( 2Nm/18 in-lb) 2. Slide off the assy socket n°30 and the cover
29
3. Unscrew the three screws n°28
(4Nm/35 in-lb)
4. Remove the self-tailing arm n°27 by rotating
and lifting it.
5. Lift off the drum n°24
Install the winch on the deck in the
position you have chosen, keeping in
mind the limits described on page 4
and using socket head (SH) bolts.

6
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Follow steps below only to install the winch using hexagonal headed bolts
8. Slide out the central shaft n°19 9. Unscrew the 6 hex screws n°17
(20Nm/177 in-lb)
10. Remove the drum support n°16
Important: washer n°7 may remain inside the
drum support!
6. Completely unscrew the three screws n° 28 7. Remove the stripper arm housing n°21
Install the winch on the deck in the
position you have chosen, keeping in
mind the limits described on page 4
and using hexagonal headed (HH) M8
bolts.

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
The drilling cut out template is available on the Harken®website, www.harken.com
B. Remove the winch and drill the six 8.5 mm diameter holes.
C. Bolt the base of the winch to the deck using six M8 bolts (not supplied by Harken®), correctly
chosen for the thickness and type of the boat deck. Consult the yard that built the boat in case
of doubt.
WARNING!
To install the winch on the deck, use only bolts in A4 stainless steel (DIN 267 part11).
Bolts made of other materials may not have sufficient strength or may corrode which can result
in winch pulling off deck suddenly and unexpectedly during high loads causing severe injury or
death.
NOTICE
To mount winches on the deck, do not use countersunk bolts.
D. Fill the mounting holes with a suitable marine sealant.
E. Remove the excess adhesive/sealant from the holes and base drainage channels
F. Reassemble the winch following the steps in Installation procedure (page 5) in the reverse
order, and apply the products indicated in the section on maintenance.
Carry out Installation procedure then install the winch on the deck in the chosen position.
A. Position the base of the winch on the deck and mark the position of the holes or use the
drilling cut-out template at the point where you have decided to place the winch.
Below is a reduced scale diagram.
Ø205
28°
41°
53,5°
60°
64°
60°
53,5°
Winch outside Ø240
final pinion
position
Ø9
n°6

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
NOTICE
Before closing the winch, make sure the holes and drainage channels in the base of the winch
are not obstructed.
Positioning the self-tailing arm
Position the self-tailing arm so that the line leaving the winch is led into the cockpit.
Maintenance
Washing
Winches must be washed frequently with fresh water, and in any case after each use.
Do not allow teak cleaning products or other cleaners containing caustic solutions to come into
contact with winches and especially anodised, chrome plated or plastic parts.
Do not use solvents, polishes or abrasive pastes on the logos or stickers on the winches. Do not
use polishes or abrasive pastes on anodised, chromed plated or plastics surfaces.
Make sure that the holes and drainage channels in the base of the winch are not obstructed so
that water does not collect.
Maintenance table
Winches must be visually inspected at the beginning and end of every season of sailing or racing.
In addition they must be completely overhauled, cleaned and lubricated at least every 12 months.
After an inspection, replace worn or damaged components. Do not replace or modify any part of
the winch with a part that is not original.
WARNING!
Periodic maintenance must be carried out regularly. Lack of adequate maintenance shortens
the life of the winch, can cause serious injury and also invalidate the winch warranty.
Installation and maintenance of winches must be carried out exclusively by specialized
personnel.
In the case of doubt contact Harken®Tech Service at [e-mail]
Disassembly procedure
Tools needed
One medium at-bladed screwdriver
A number ve hex key
Rags
To identify the various parts refer to the exploded view at the end of this Manual.
Torque to be applied in assembly phase
Maintenance

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Carry out Installation procedure (page 5) as shown in the paragraph on winch installation and
then do the following:
11. Remove the gear n°6, pawls n°3 and the
washer n°7
8. Slide out the central shaft n°19 9. Unscrew the 6 hex screws n°17
(20Nm/177 in-lb)
10. Remove the drum support n°16
Important: washer n°7 may remain inside the
drum support!
6. Completely unscrew the three screws n° 28 7. Remove the stripper arm housing n°21

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
12. Remove the gear n°2 13. Remove the idler and pinion n°14
14. Remove roller bearings n°15
16. Remove the gear n°10
15. Remove the pawls n°11
17. Remove roller bearings n°12

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
If it is necessary to replace any jaws of the winch, proceed as follows:
I. Unscrew the 4 screws n°26
( 4Nm/35 in-lb)
II. Remove the jaws n°23
Inspect balls inside the drum and carefully check the correct position; if it is necessary to put back
any balls, push balls in the race (as shown below):
Once the winch is completely disassembled, clean the parts with a degreasing that does not leave
residues, proper to clean metal components; rinse plastic parts in fresh water. Once you have done
this, dry the parts with cloths that do not leave residue.
Inspect gears, bearings, pins and pawls for any signs of wear or corrosion.
Carefully check the teeth of gears and ring gears to make sure there are no traces of wear.
Check the roller bearings and check there are no breaks in the bearing cages.
Replace worn or damaged components.
Carry out maintenance on components using the products listed below.
For more information on which products to use where, refer to the exploded diagram below.
Use a brush to lightly lubricate all gears, gear pins, teeth and all moving parts with grease.
Lightly lubricate the pawls and springs with oil. Do not use grease on the pawls!

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Exploded view with maintenance products
Harken®Grease
G
Harken®Pawl Oil
O
Anti-seize
A
G
A
A
A
G
G
G
G
G
G
G
G
G
O
O
A
G
1
G
2
....
Apply Harken®grease where indicated above
Apply Harken®grease: 1. on assy socket screw - 2. on drum gear
NOTICE
On every gear and every component that must be greased, apply Harken®grease with a brush in a proper
quantity as shown below:
NOTICE
Harken®grease to apply on all
teeth: do not use excessive
quantity of product to void wastes.
If in contact with the pawls, an
excess of grease can compromise
the safety of the winch.

13
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Assembly
Make sure that the holes and drainage channels in the base of the winch are not obstructed
Assemble the winch in the reverse order of the sequence in the section on disassembly.
To tighten bolts, use the torque indicated in the disassembly procedure.
The icon on the Stripper Arm Hou-
sing indicates the Stripper Arm nal
position.
Change the Stripper Arm Housing
angle to modify the Stripper Arm nal
position.
When positioning the stripper arm,
align the peeler with it.
If the jaws have been disassembled,
insert peeler between the two jaws,
taking care that the letters TOP on the
peeler are facing upwards.
OIL
To assemble the pawls
Correctly position the spring in its housing
as shown at left. Hold the spring closed
and slide the pawl into its housing. Once
in position, check that the pawls can be
easily opened and closed with a nger.
In case of doubt concerning the assembly procedure contact Harken®Tech Service:
[e-mail]

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Harken®limited worldwide warranty
Refer to the Harken®Limited Worldwide Warranty in the Harken®Catalogue and on the website
www.harken.com
Harken® limited worldwide warranty - Ordering spare parts
Headquarters
Harken®, Inc.
1251 East Wisconsin Avenue
Pewaukee, Wisconsin 53072-3755 USA
Tel: [phone]
Fax: [phone]
Email: hark[email protected]
Web: www.harken.com
Manufacturer
Harken®Italy S.p.A.
Via Marco Biagi, 14
23570 Limido Comasco (CO) Italy
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.harken.com
Tech Service
Email: [e-mail]
Customer Service
Tel: [phone]
Email: [e-mail]
Tech Service
Email: [e-mail]
Customer Service
Tel: [phone]
Email: [e-mail]
Ordering spare parts
Spare parts can be requested from Harken®as
described in the Harken®Limited Worldwide
Warranty, indicating the part number in the
Parts List and including the serial number of the
winch for which the parts are required.
The serial number of the winch is printed on
a plate on the drum support of the winch.
W XXXXX
XXXXXXXXX

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Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Exploded view
Exploded view
23
25
21
26
27
28
29
24
18
16
17
8
10
4
14
5
11
15
13
12
9
1
22
2
3
5
4
6
7
19
20
....
Radial Winch 70.2 STA, STC, STCW

16
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
23
25
21
26
27
28
29
24
18
16
17
8
10
4
14
5
11
15
13
12
9
1
22
2
3
5
4
6
7
19
20
....
Radial Winch 70.2 STA, STC, STCW

17
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
*Available with service kit; see website www.harken.com
**Winch product sticker
Parts lists
Radial Winch 70.2 STA
A= drum in anodised aluminium
Pos. Q.ty Code Description
11
1
1
2
A94146700
S476030004
S4152300A7
S415580085
Assy Base Winch 70
Base W70
Centering bushing Ø12
Bushing Ø22xØ25x9.5
Bushing Ø12xØ35x9
Winch Product Sticker**
21 S414770004 Gear Z13 W70
31 S413030004 Pawls Carrier Ø8xN2
46 S000080003 Pawl Ø8*
56 S000380001 Pawl Spring Ø8*
61 S414390041 Ratchet Gear Z21xN2
71 S413120002 Washer Ø22.5xØ45x1
81 S278170002 Washer Ø12.5xØ48x1.5
91 S281010004 Pin for gear
10 1 S414420041 Ratchet Gear Z26xN4
11 1 S414410004 Pawls Carrier Gear Z13 N4
12 2 A72821800 Roller Bearing 14/20/18
13 1 S416030004 Gear Pin Ø12xØ18x52,5
14 1 S414760004 Idler and Pinion Z26/Z13 W70
15 2 A74162300 Roll bearing 24x18x18
16 1
2
1
A94146800
S415580085
S4130900A7
Assy Housing WInch 70
Housing W70
Bushing Ø12xØ35x9
Support Bushing W70
Bushing Ø22xØ25x8.5
17 6 M0606303 Screw M8x25 UNI 5931
18 3 A74147500 Roller Bearing Ø102xØ114x26
Parts List
Pos. Q.ty Code Description
19 1
1
A94147900
S413880002
Assy Shaft Winch 70
Central shaft W70 ST
Washer Ø17.2xØ32x1.5
20 Winch Serial Number Sticker
21 1 S4144300A0 Stripper Arm support W60/70
22 1 S281700097 Red line
23 1
1
4
A94147100
S414850080
S385970001
Assy Jaws winch 70
Lower Jaw W70
Upper Jaw W70
Peeler W60 - 70
SPRING
24 1 A96966000 Drum spare kit Winch 70
Drum assembly Winch 70
50 M0610280 Ball 5/16"
25 4 M0601803 Screw UNI EN ISO 1207 - M6x35 - A4
26 1 S414730019 Stripper Arm W70
27 3 M0601903 Screw M6x16 UNI1207
28 1 S4160400B1 Cover 2 Speed W70
29 1
1
1
A94136400
S415130085
M0614303
Assy Socket W20-80
Socket Handle W20/80
Washer Ø7.7xØ25x5.8
Screw M8x20 UNI 6109

18
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Radial Winch 70.2 STC
C=drum in chrome bronze
*Available with service kit; see website www.harken.com
**Winch product sticker
Pos. Q.ty Code Description
11
1
1
2
A94146700
S476030004
S4152300A7
S415580085
Assy Base Winch 70
Base W70
Centering bushing Ø12
Bushing Ø22xØ25x9.5
Bushing Ø12xØ35x9
Winch Product Sticker**
21 S414770004 Gear Z13 W70
31 S413030004 Pawls Carrier Ø8xN2
46 S000080003 Pawl Ø8*
56 S000380001 Pawl Spring Ø8*
61 S414390041 Ratchet Gear Z21xN2
71 S413120002 Washer Ø22.5xØ45x1
81 S278170002 Washer Ø12.5xØ48x1.5
91 S281010004 Pin for gear
10 1 S414420041 Ratchet Gear Z26xN4
11 1 S414410004 Pawls Carrier Gear Z13 N4
12 2 A72821800 Roller Bearing 14/20/18
13 1 S416030004 Gear Pin Ø12xØ18x52,5
14 1 S414760004 Idler and Pinion Z26/Z13 W70
15 2 A74162300 Roll bearing 24x18x18
16 1
2
1
A94146800
S415580085
S4130900A7
Assy Housing WInch 70
Housing W70
Bushing Ø12xØ35x9
Support Bushing W70
Bushing Ø22xØ25x8.5
17 6 M0606303 Screw M8x25 UNI 5931
18 3 A74147500 Roller Bearing Ø102xØ114x26
Pos. Q.ty Code Description
19 1
1
A94147900
S413880002
Assy Shaft Winch 70
Central shaft W70 ST
Washer Ø17.2xØ32x1.5
20 Winch Serial Number Sticker
21 1 S4144300A0 Stripper Arm support W60/70
22 1 S281700097 Red line
23 1
1
4
A94147100
S414850080
S385970001
Assy Jaws winch 70
Lower Jaw W70
Upper Jaw W70
Peeler W60 - 70
SPRING
24 1 A94148800 Drum spare kit Winch 70
Drum assembly Winch 70 C
50 M0610280 Ball 5/16"
25 4 M0601803 Screw UNI EN ISO 1207 - M6x35 - A4
26 1 S414730019 Stripper Arm W70
27 3 M0601903 Screw M6x16 UNI1207
28 1 S4160400B1 Cover 2 Speed W70
29 1
1
1
A94136400
S415130085
M0614303
Assy Socket W20-80
Socket Handle W20/80
Washer Ø7.7xØ25x5.8
Screw M8x20 UNI 6109

19
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
Radial Winch 70.2 STCW
CW = chrome/white
Pos. Q.ty Code Description
1 1
1
1
2
1
A96726200W
S476030004
S4152300A7
S415580085
S6620700A5W
Assy Base Winch 70 RAL9003
Base W70
Centering bushing Ø12
Bushing Ø22xØ25x9.5
Bushing Ø12xØ35x9
Skirt W70 RAL9003
Winch Product Sticker**
21 S414770004 Gear Z13 W70
31 S413030004 Pawls Carrier Ø8xN2
46 S000080003 Pawl Ø8*
56 S000380001 Pawl Spring Ø8*
61 S414390041 Ratchet Gear Z21xN2
71 S413120002 Washer Ø22.5xØ45x1
81 S278170002 Washer Ø12.5xØ48x1.5
91 S281010004 Pin for gear
10 1 S414420041 Ratchet Gear Z26xN4
11 1 S414410004 Pawls Carrier Gear Z13 N4
12 2 A72821800 Roller Bearing 14/20/18
13 1 S416030004 Gear Pin Ø12xØ18x52,5
14 1 S414760004 Idler and Pinion Z26/Z13 W70
15 2 A74162300 Roll bearing 24x18x18
16 1
2
1
A94146800
S415580085
S4130900A7
Assy Housing WInch 70
Housing W70
Bushing Ø12xØ35x9
Support Bushing W70
Bushing Ø22xØ25x8.5
17 6 M0606303 Screw M8x25 UNI 5931
18 3 A74147500 Roller Bearing Ø102xØ114x26
Pos. Q.ty Code Description
19 1
1
A94147900
S413880002
Assy Shaft Winch 70
Central shaft W70 ST
Washer Ø17.2xØ32x1.5
20 Winch Serial Number Sticker
21 1 S4144300A0 Stripper Arm Housing W60/70
22 - - -
23 1
1
4
A94147100W
S414850080W
S385970001
Assy Jaws winch 70 RAL9003
Lower Jaw W70 RAL9003
Upper Jaw W70 RAL9003
Peeler W60 - 70 RAL9003
SPRING
24 1 A94148800 Drum spare kit Winch 70
Drum assembly Winch 70 W
50 M0610280 Ball 5/16"
25 4 M0601803 Screw UNI EN ISO 1207 - M6x35 - A4
26 1 S414730019 Stripper Arm W70
27 3 M0601903 Screw M6x16 UNI1207
28 1 S4160400B1W Cover 2 Speed W70 RAL9003
29 1
1
1
A94136400
S415130085
M0614303
Assy Socket W20-80
Socket Handle W20/80
Washer Ø7.7xØ25x5.8
Screw M8x20 UNI 6109
*Available with service kit; see website www.harken.com
**Winch product sticker

20
Radial Winch 70.2 ST
Installation and Maintenance Manual - Mod.G
23
25
21
26
27
28
29
24
18
16
17
8
10
4
14
5
11
15
13
12
9
1
22
2
3
5
4
6
7
19
20
Radial Winch 70.2 STBBB, STCCC