Harken 2625 57 mm Ratchamatic Block - Manual (Page 2)

Block
Size
Part
No.
A B C D E F G
in mm in mm in mm in mm in mm in mm in mm
75mm 2682 9 /
32
7 2 17 /
32
64 17 /
32
13.5 27 /
64
11 2 15 /
16
75 4 1 /
16
103 1 1 /
4
31
2682 Cheek Block
Position block so ratchet turns in desired direction.
Refer to arrow for sheave direction in ratchet mode.
Flip block to change direction. Use chart below or use
block as a template. Mark holes using centerpunch.
Check marks with block before drilling. Remove block.
Important—holes are different diameter. Use two
drill sizes for deck holes. See chart and diagram. Bevel
top of deck holes using a small knife to allow sealant
to mass. Place gasket under block. Through-bolt block
using recommended stainless steel fasteners, washers
and locknuts.
Ratchamatic cheek blocks include metric roundhead
screws, washers and nuts. See chart below:
Block
Part No. Size
Drill Sizes Supplied
Fastener x Length mm in
2682 75 mm 4.25 / 5.25 11 /
64
/ 13 /
64
M4 / M5 x 60 mm
*Fastener length: Add deck thickness and overhang for nut and washer.
3-Way Cam-Lock—All Ratchamatic Singles
Adjusting Ratchet
INSERT
2.5 mm allen wrench
(included)
ALIGN HOLE in sheave
with bottom of block
HEAVIER
LOADS
LIGHTER
LOADS
Remove becket to access
ratchet adjustment hole.
Ratchet Direction
Arrow on side of block shows direction that sheave
will spin in ratchet mode. Refer to arrow when
reeving block or mounting cheek block.
Remove circular mounting cap. Position block so ratchet turns
in desired direction (see drawing below). Flip block to change
direction. Use chart below or use block as a template and mark
holes using centerpunch. Check marks with block before
drilling. Remove block and drill holes using drill shown below
in chart. Bevel top of deck holes using a small knife to allow
sealant to mass. Place gasket under block. Through-bolt block
using recommended stainless steel fasteners, washers and
locknuts. Do not overtighten center screw or ratchet will bind.
Test block after mounting to make sure ratchet engages
smoothly and rotation direction is correct.
Ratchamatic cheek blocks include metric roundhead screws,
washers and nuts. See chart.
2633 Cheek Block
Block
Size
Part
No.
A B C D E F G
in mm in mm in mm in mm in mm in mm in mm
57 mm 2633 7 /
32
6 1 3 /
4
44.5 21 /
64
8.3 3 1 /
4
83 2 1 /
4
57 1 25 1 5 /
32
29
Block
Part No. Size
Drill Size Supplied
Fastener x Length mm in
2633 57 mm 4.25 11 /
64
M4 x 60 mm
*Fastener length: Add deck thickness and overhang for nut and washer.
C
B A
D
E
F G
G
B A
F
C
D
E
1. Cam lever up.
Block locks in
front or side
position.
2. Cam lever down.
Block turns
freely.
2 1
Deck Hole Drill
5.25 mm ( 13 /
64
")
Deck Hole Drill
4.25 mm ( 11 /
64
")