Harken 3299 Manual de usuario

INSTRUCTIONS

High-Load Snatch Blocks

N15W24983 Bluemound Road •Pewaukee, WI 53072 U.S.A.

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

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.

Features - Sideplates pivot open to make them easy to load onto sheets, perfect for temporary leads,

line deﬂection, and static line functions requiring small adjustments. Loop carries primary load

and articulates for a fair lead. Captured Velcro®strap holds block securely closed when sideplates

are aligned. Strap has a reﬂective tab for easier operation with gloves. Harken composite bearing

technology (ULC) ensures sheaves turn smoothly and maintain efﬁciency under extreme loading.

Snap-ﬁt Torlon®bearings carry sideloads. Integral headspacer prevents Hard Lube-anodized

aluminum sideplates from deﬂecting and binding.

Anchor point

Example - Line making 180°

wrap

General Warnings

WARNING! Work with a rigger when using alternate spliced loops or fastenings. Knots

or incorrect splices weaken block assembly considerably. Use only Harken-supplied

replacement loops, or work with a qualiﬁed rigging supplier when replacing loops.

Part

No.

Sheave diameter Max line Ø

Maximum working

load Breaking load

Description mm in mm in kg lb kg lb

3299 2.3T HL 38.5 1.5 11

2300 5069 4600 10138

3300 5T HL 56 2.2 16

5000 11020 10000 22040

3301 8T HL 75 3 18

8000 17632 16000 35264

3302 12T HL 101 4 30 1

12000 26448 24000 52896

3303 15T HL 125 5 30 1

15000 33060 30000 66120

Velcro is a registered trademark of Velcro Industries B.V.I

Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.

WARNING! Block loads increase when the line turns at a greater angle. Block loads

double when the line turns 180 degrees. See example above. Use block loading factors.

Select blocks and application carefully.

Loop Velcro

band

Closed slot

Terms

Velcro band

Head

Maximum working load - metric tons

Screw

Thimble

Alpha

cheek

Stop ball

Open slot

Beta

cheek

Speciﬁcations

HL Snatch blocks are supplied by Harken with loops. Loads listed above assume that the standard

Harken-supplied loops are used.

1. Unwrap the Velcro®band, leaving it secured

to the closed slots in the alpha cheek. One end

of the loop should be secured to the alpha cheek

thimble and pass under the Velcro band.

2. Remove the other end from the thimble on the

beta cheek.

Note wrap direction.Note wrap direction.

6. Pull the Velcro band tightly as you wrap. Note:

there is no need to pass the Velcro band through

the closed slot on the band's second pass. Make

sure the band is securely seated in the open slots

on the beta cheek. Press band in place to secure

Velcro, and tuck the reﬂective band into open

slots.

WARNING! Never attach load-bearing

lashings or loop to the head of the block.

This will drastically weaken block so

it will break under low load. Use only

Harken supplied loops or equivalent

secured to thimbles as directed.

Always Attach to Thimbles

Thimble

Head

Attaching Block to Anchor

Attaching Block (Continued)

3. Rotate the cheeks to load line on sheave. Close

cheeks making sure they align: there will be a

clicking sound as the locking ball seats. The 3303

block has a pull pin, not a locking ball.

4. Pass the loop around the anchor point and

over the beta cheek’s thimble.

5. Rewrap the Velcro band. Make sure the Velcro

band always starts with the sewn deadend

passing over the loop and through the closed

slot. The wrap direction is counter-clockwise.

6655

Underside view ofUnderside view of

aboveabove

Velcro is a registered trademark of Velcro Industries B.V.I

Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.

Locking

ball

Anchor Point Chafing or Cutting

Loops must attach to round bails such as those

on padeyes or pins. Sharp edges on many perfo-

rated toerails will cut loop, severely weakening it.

When loop is attached to a plate, it must be thick

enough and have rounded edges to keep loop

from being damaged.

WARNING! Loops or lashings running

over a sharp edge can cause part to

break under load. Attach to ﬁtting with a

rounded edge.

Inspect screws to make sure they are tight. If

loose, remove and use threadlocker to secure.

Inspect Parts Every Time You Sail

WARNING! Inspect fasteners to make

sure they are tight and secure with blue

Loctite®adhesive or equivalent.

Sharp edges

damage loop.

Round edges

prevent damage

to loop.

Anchor point

Short-Term Maintenance

Flush block and attachments frequently with

detergent and fresh water. Clean bearings by

flushing areas shown while rotating sheave.

Long-Term Maintenance

WARNING! Make sure Velcro band is

correctly wrapped and has good holding

properties. If the band does not hold, the

sheet can catch the open slots when sail

is ﬂogging and accidentally open.

Always check the Velcro®band to make sure it

is secure. Replace the band if it loses holding

ability. Check and replace stop ball if it becomes

worn.

Replace worn stop ball

Inspect loop. Replace if there are signs of fatigue,

strand separation, wear, or if the colored tracer

fades from UV damage.

WARNING! Failure to inspect and correct

block loop and Velcro can result in block

breaking below rated load. Inspect parts

each time you sail. If parts are under

load during long passages, it is important

to inspect them carefully while underway.

If in doubt, replace.

Disassemble block. Flush with detergent and

fresh water. See assembly on next page.

StrapStrap

Spin sheaveSpin sheave

Velcro is a registered trademark of Velcro Industries B.V.I

Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.

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

Printed in USA 5116 10/17

Harken equipment requires minimal

maintenance, but some is required to give

the best service and to comply with Harken's

limited warranty. It is important to keep

equipment clean by frequently flushing

with fresh water. In corrosive atmospheres,

stainless parts can show discoloration around

holes, rivets, and screws.

For additional safety, maintenance, and warranty information; www.harken.com/manuals or the Harken catalog.

Warranty

General Maintenance

This discoloration is not serious and can be removed

with a fine abrasive. Flush blocks thoroughly with

fresh water. Periodically, disassemble the blocks and

clean with detergent and fresh water.

Important: Exposure to some teak cleaners and

other caustic solutions can result in discoloration of

part and is not covered under the Harken warranty.

Replacement part numbers

Block

Fastener

FHCS (2)

Size

(mm)

Thimble

cap (2)

Thimble

(2)

Mylar

washer (3)

Beta

cheek

Sheave

with

ULC

bearing

Torlon®

balls Size (Qty) Axle

Alpha

cheek

with

band

Stop

ball Loop

3299 The 3299 block is riveted. Components are not replaceable, only loop. H-77983

3300 HFS1367 6X12 H-71376 H-71375 H-22888A AL-4110 * MP-126 1/4" (30) MS-518 H-77646 MP-117 H-77984

3301 HFS1365 8X16 H-72105 H-72102 H-46227 AL-4112 * MP-129 5/16" (34) MS-555 H-77318 MP-117 H-77985

3302 HFS1366 12X20 H-72167 H-72164 H-45007 AL-4114 * MP-127 3/8" (38) MS-549 H-77986 MP-117 H-77987

3303 HFS1368 12X25 H-72275 H-72274 H-49195 AL-4116 * MP-128 1/2" (34) MS-521 H-77988 ** H-77989

*Sheaves have pressed-in ULC composite sleeve bearings. Contact Harken

** Beta cheek in 3303 block uses spring loaded pinstop.

Assembly and Reorder Parts

3299 block is

riveted.

Components are

not replaceable.

Sheave with ULC

bearing and snap-fit

sideload balls

Mylar

washer

Socket head

cap screw

Raised tab must match notch

Alpha cheek

Raised tab

Mylar

washer

Alpha cheek assembly

Loop

Mylar

washer

Raised tab

Axle

Beta cheek in 3303

with pinstop

Thimble

cap

Thimble

Stop

ball

Mylar is a registered trademark of DuPont Teijin ﬁlms US Limited Partnership

Velcro is a registered trademark of Velcro Industries B.V.I

Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.

Beta cheek

Velcro®strap

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