Harken Carbo AirBlock 340 User manual

INSTRUCTIONS
29 mm Carbo AirBlock®
All blocks except 351 Ti-Lite
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.
Part
No. Description
A B C
Maximum
working load
Breaking
load Harken
Shackle
Part No.in mm in mm in mm lb kg lb kg
340 Single/swivel 1
1
/ 8 29 2
5
/ 8 66
5
/ 32 4 330 150 1000 454 246
341 Single/swivel/becket 1
1
/ 8 29 3
1
/ 16 78
5
/ 32 4 330 150 1000 454 246
342 Double/swivel 1
1
/ 8 29 2
7
/ 8 73
3
/ 16 5 660 299 1625 737 072
343 Double/swivel/becket 1
1
/ 8 29 3
3
/ 8 85
3
/ 16 5 660 299 1625 737 072
344 Triple/swivel 1
1
/ 8 29 2
7
/ 8 73
3
/ 16 5 990 449 2000 907 072
345 Triple/swivel/becket 1
1
/ 8 29 3
3
/ 8 85
3
/ 16 5 990 449 2000 907 072
346 Triple/423 Carbo-Cam®** 1
1
/ 8 29 2
7
/ 8 73
3
/ 16 5 750 340 1500 680 072
347 Triple/423 Carbo-Cam®/becket** 1
1
/ 8 29 3
3
/ 8 85
3
/ 16 5 900 408 1800 816 072
348 Single/fixed* 1
1
/ 8 29 1
15
/ 16 49 — — 330 150 1000 454 —
349 Stand-up/fixed* 1
1
/ 8 29 2
3
/ 16 56 — — 330 150 1000 454 —
350 Cheek 1
1
/ 8 29 2
1/8
53 — — 330 150 1000 454 —
351 Ti-Lite* Important: Consult instruction sheet at: http://www.harken.com/pdf/4927.pdf
352 90° Fixed head* 1
1
/ 8 29 2
1
/ 16 52 — — 330 150 1000 454 —
353 Traveler 1
1
/ 8 29 3
5
/ 8 92 — — 330 150 1000 454 —
371 Clew block assembly 1
1
/ 8 29 4
7
/ 8 124 — — 330 150 1000 454 —
381 Double/fixed 1
1
/ 8 29 2
1
/ 8 54 — — 660 299 1625 737 —
*Can be used as becket block **Maximum working loads and breaking loads for blocks based on cam strengths
A
B
C
Glass-filled nylon sideplates: load-carrying curved bearing races.
Single fixed: Integral becket allows 2:1 or 3:1 purchase.
Doubles/triples: U-Locks holds the swivel in front/side position, or lets
block spin freely.
Triple w/cam: Compact cam arm supports high-load purchases of 5:1 or 6:1.
Cheek: Line-shedding, small mounting footprint and drain holes.
Common uses: Outhauls, Cunninghams, Vangs, Traveler controls,
Barberhaulers, Flag halyards
Max Line Size: Blocks w/o Cams 5/16" (8 mm); Blocks w/Cams 1/4" (6 mm)
Do not apply a load greater than the Maximum working load (MWL) of the Carbo AirBlock listed below.
Features
IMPORTANT: See Inspection and Maintenance at end of manual.
USA –Tel: [phone] • Web: www.harken.com • Email: [email protected]
Italy –Tel: [phone] • Web: www.harken.it • Email: [email protected]

350 Cheek Block
Using block as template, mark holes using a centerpunch. Remove block and
drill holes using a 11/64" (4.2 mm) drill. Bevel top of deck holes using a small
knife to allow sealant to mass. Through-bolt block using recommended
stainless steel fasteners, washers and locknuts.
Reeving Multi-Purchase Systems
For larger, printable diagrams, please see: www.harken.com.
Integral Becket—348 / 352
Deadend line at mouth to construct a 2:1 or 3:1 system.
Part
No. Fasteners
A B C
in mm in mm in mm
350 M4 or #8 PH/RH* — — 1
3
/ 16 30 — —
*Fastener length: Add deck thickness and overhang for nut and washer.
350
B
349 Stand-Up
Part
No. Fasteners
A B C
in mm in mm in mm
349 M5 or #10 PH/RH
7
/ 16 11 1
1
/ 4 32 1
11
/ 16 43
*Fastener length: Add deck thickness and overhang for nut and washer.
A
C
B
Using eyestrap as template, mark holes using a centerpunch. Remove block
and drill holes using a 11/64" (4.2 mm) drill. Bevel top of holes using a small
knife to allow sealant to mass. Through-bolt using recommended stainless
steel fasteners, washers and locknuts.
5:1 Right-Angle Reeving
Dead-end on Becket
1
2
3
4
5
5
Right-angle reeving
dead-end on becket
5:1
4:1 Right-Angle Reeving
Dead-end on Becket
1
2
3
4
4
4:1
Right-angle reeving
dead-end on becket
1
2
3
4
5
6
6:1 Right-Angle Reeving
Dead-end on cam
6:1 Right-Angle Reeving
Dead-end on becket
6
2
3
4
5
6
6
1
Right-angle reeving
dead-end on becket
6:1
3-Way U-Lock—342 / 343 / 344 / 345 / 346 / 347 / 381
The 3-Way U-Lock allows a change of headpost direction from
front to side or allows the block to swivel. To change headpost
direction, remove shackle, turn post, install shackle. Remove
U-Lock to allow block to swivel.

342,343,344,345,Doubles and Triples
No. Description Qty Part No.
1Single/fixed 1 348
2 Spring 1 097
3 Eyestrap 1 073
Parts — 29 mm Carbo
No. Description Qty Part No.
1 Panhead Screws M4X.7X25mm 2 HFS134
2 Cam Cleat-Micro Carbo II 1 471
3 Nut M4 2 HFS890
4 U-Lock 1 H-27808A
5 Shackle Assembly 3/16" 1 072
A Shackle Strap 3/16" 1 HSB18
B Shackle Clevis Pin 3/16" 1 HSB21
C Split Ring 1 HSB24
5
AC
B
4
1
No. Description Qty Part No.
1Shackle Assembly 3/16" 1 072
A Shackle Strap 3/16" 1 HSB18
B Shackle Clevis Pin 3/16" 1 HSB21
C Split Ring 1 HSB24
2U-Lock-29mm Carbo Dbl/Trpl 1 H-27808A
No. Description Qty Part No.
1Shackle Assembly 3/16" 1 072
A Shackle Strap 3/16" 1 HSB18
B Shackle Clevis Pin 3/16" 1 HSB21
CSplit Ring-SB (MS-002) 1 HSB24
1
B
C
A
1
B
C
A
2
340, 341 Single
No. Description Qty Part No.
1Shackle Assembly Micro 5/32" 246
A Shackle Strap 1 HSB104
BShackle Clevis Pin 5/32 X .488 1 HSB105
C Split Ring 1 HSB24
346/347 Triple
381 Double
1
B
C
A
2
3
3
349 Standup Fixed 1
2
3

Harken®equipment is designed for minimal maintenance. However, some upkeep is required to give
the best service and comply with the Harken®limited warranty.
Keep your equipment clean and free-running by frequently flushing with fresh water. Periodically
clean with mild detergent and water solution. Spin sheaves to distribute soap solution evenly.
Flush with 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.
Warranty
For additional safety, maintenance and warranty information see www.harken.com/manuals or the
Harken®catalog.
Maintenance
Inspect Block and Shackle Before You Sail
Frequently inspect shackles and shackle posts for signs of corrosion, cracks, or elongation. When
replacing shackles, use the correct Harken parts to maintain the proper strength. Replace line as
necessary, taking into consideration the maximum size recommendation.
WARNING!: Failure to inspect and replace damaged metal parts and/or worn or frayed line
can cause block or system to break suddenly causing an accident, damage to your vessel,
personal injury or death. See www.harken.com/manuals for additional safety information.
M1000 11/13