background image

Sideplate beta

Deadend

post

Roller cage

assembly

Sheave with side balls

Sideplate alpha

Isolator

Screw

Heli-Coil

® 

threaded insert

INSTRUCTIONS

Loop Block

3214, 3230, 3245, 3255, 3386, 3387, 3388

N15W24983 Bluemound Road, Pewaukee, WI  53072-4974

Telephone: (262) 691-3320 • Fax: (262) 701-5780 • Web: www.harken.com • Email: [email protected]

Parts

You Must Supply

Part

No.

Sheave

Ø

Max working load

(MWL)

Breaking load

(BL)

Max line Ø 

that fi ts 

through mouth

lb

kg

lb

kg

3214, 3386, 3387

57 mm

2500

1134

5000

2268

5 mm

3230, 3388

75 mm

5000

2268

10000

4536

8 mm

3245

100 mm

7500

3402

15000

6804

11 mm

3255

125 mm

11000

4990

22000

9977

14 mm

1) Head

2) Sideplates

3) Sheave

4) Deadend post

5) Mouth

6) Hex key

7) Blue Loctite

® 

adhesive

8) Head securing line

6

Loop and/or high-strength lashing line

When choosing a Harken Loup

®

 soft-attach, be sure the Loup maximum 

working load in basket confi guration exceeds the maximum working load 

of the block.
When choosing a lashing line, use a breaking load that is double the block's 

breaking load to account for strength loss from:
1. Knots slipping or breaking at a much lower load than line breaking load. 

 Spectra

®

 or Dyneema

®

-type lines require specialized knots.

2. Splices slipping or failing due to incorrect type or execution.
3. UV damage increasing with each passing year.
4. Chafi ng seriously reducing strength.
Go to www.harken.com/knots for additional information. If you are not 

comfortable choosing line, work with a qualifi ed rigger.

Note: See chart for maximum line diameter that will fi t through mouth

.

Specifications

WARNING! Knots weaken line considerably. Consult qualifi ed rigger 

or line manufacturer for advice on securing line. Use high-strength 

loops or consult rigger for recommendations on lashing. Using the 

wrong line, or securing the line improperly, can cause an accident.

WARNING! Strictly follow all instructions to avoid an accident, damage to your vessel, 
personal injury, or death. See www.harken.com/manuals for additional safety information.

= Incorrect. Avoid to prevent accidents.

Block

Sheave Ø Head securing line  Sideplate alpha

Heli-Coil  Deadend post

Sheave w/side balls

Roller cage assembly  Sideplate beta Isolator

Screw

3214

57 mm

HCP1438 

AL-3700

Alpha sideplate

 

includes Heli-Coil

MS-210

AL-3238

H-34389A

HBB85

AL-3701

MP-3020 HFS796

3387

57 mm

HCP1438

H-85960

MS-210

AL-3238

H-85962 + (88) MP-124

HBB85

H-85961

MP-3020 HFS796

3230

75 mm

HCP1419

AL-3726

MS-221

AL-3336

H-34390A 

HBB86

AL-3727

MP-3021 HFS806

3388

75 mm

HCP1419

H-85872

MS-221

AL-3336

H-85875+ (96) MP-119

HBB86

H-85873

MP-3021 HFS806

3245

100 mm

HCP1419

AL-3751

MS-251

AL-3427

H-34391A

HBB87

AL-3752

MP-3022 HFS1271

3255

125 mm

HCP392

AL-3769

MS-259

AL-3515

H-34392B

HBB88

AL-3770

MP-3023 HFS1275

8

7

1

2

3

4

5

#5004 rev1

4 page booklet instruction

Final folded size:  4.25 x 5.5"

Black ink only

Prints all four pages

Loctite is a registered trademark of Henkel AG & Company KGaA. 

LOUP is a registered trademark of Yale Cordage.

Spectra is a registered trademark of Honeywell International, Inc.

Dyneema is a registered trademark of DSM Dyneema.

Heli-Coil is a registered trademark of Emhart Teknologies Inc.,Worldwide

See 3386 double on next page

Head securing line

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