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SAL2875 (2.8/28-75 SAM) (28-75mm F2.8 SAM)

2-2

3

G-116

G-85

G-62 G-85

G-22

A-20

G-62

G-36

G-36

G-48

G-48

G-116

G-116

Note 1:
This lens can disassemble both the 
1st lens side and the mount side.

1

2

7

6

2

1

3

6

5

4

8

9

0

q;

4

3

9

2

1

4

5

6

7

qa

1

5

8

4

3

2

5

B-10

B-40

B-10

B-10

G-85

G-36

B-10

B-10

B-10

B-110

B-10

Adhesive bond 
(LOCTITE 460) or 
the equivalent.

B-40

Note 3: 

Note 2: 

The screw is short and the notch of the screw hole 
is easily destroyed.

How to remove the selection switch assy set the AFMF 
switch to AF, then the selection switch assy and the rear 
lens barrel assy together, then detach the selection 
switch assy from the rear lens barrel assy. 

A

A

B

B

G-48

G-36

B-10

B-10

Remove: WIDE end
Install: WIDE end

4TH GROUP REAR ASSY: 
TELE OPTICAL AXIS ADJUSTMENT
OVERALL: 
WIDE PARTIAL BLUR ADJUSTMENT

Remove: TELE end
Install: WIDE end

Front Ornament Ring

Filter Screw Frame Assy

1st Group Assy

1st Washer

Zoom Rubber

Light Shield Plate Assy

2nd Group Assy

Signal Board

Rear Light 
Shield Barrel

Mount Assy

Preset Ring

Focus Brush

(Note 3)

(Note 2)

(Note 4)

Focus Stopper Rubber

Focus 
Operation 
Lever

Main PCB Assy

Rear Lens Barrel Assy

F Gear Assy

Zoom Linkage Lever

Zoom Ring Assy

Selection Switch Assy

Chip (Mount Index)

Preset Lever

Main Spring B

2nd Lens 
Ornament Ring

Zoom Brush

1st Lens Adjustment Washer

2nd Lens Adjustment Washer

Back Adjustment Washer

Focus Rubber

1st Lens Slip Barrel

2nd Lens 
Slip Barrel

Aperture Assy

4th Group Assy

Length Groove Barrel

First Cam Barrel

Linear-Drive Barrel Assy

Middle Lens Barrel Assy

FOCUS RING ASSY

Note 4: Install the zoom rubber so that the 
chamfering side to the object side.

Cut view of Zoom Rubber

objective 
side

SAL2875 (2.8/28-75 SAM) (28-75mm F2.8 SAM)

2-3

Note for assembling and grease applying positions are shown.

SAL2875 (2.8/28-75 SAM) (28-75mm F2.8 SAM)

1.  Bent the tip of the zoom brush and cut off the notch.
2.  Fix the position of the zoom brush and then adjust.  (refer to 4-7-3).
3.  Install the polyester tape (black) 10mm, insulating tape, set tape A 2 pieces, zoom brush cover, brush cover, and insulating 

tape.

  Set the position of the brush cover and the zoom brush cover as instructed in the figure to install.

Zoom Brush 
Cover

Zoom Brush Cover

Zoom Brush Cover

Brush Cover

Brush Cover

Brush Cover

Set Tape A

Polyester Tape (Black) 10mm

Zoom Brush

Insulating Tape

Insulating Tape

Insulating Tape

Tip of zoom brush

Notch

Adhesive bond (B-10): J-6082-612-A

1.  Set the index mark and two cut position of the unit to the 7 o'clock position, then attach the 1st lens adjustment washer and the 

1st group assy to the unit.

2.  Set the circular hole to the index mark, then attach the 1st group assy to the unit and fix them with three screws.
3.  Set the index mark and two cut portions as shown in the figure, then attach the filter screw frame assy to the unit and fix them 

with three screws.

4.  Apply adhesive bond (B-10) to the hole of the 1st group assy in 3 locations (hole for fixing front ornament ring).

Cut portion

Oblong Hole

Circular Hole

Unit

Filter Screw Frame Assy

Front Ornament Ring

1st Group Assy

1st Washer

1st Lens Adjustment Washer

Index mark

Index mark

Index mark

Index 
mark

Apply the adhesive
bond (B-10)

Filter Screw Frame Assy
(Viewed from the objective lens side)

1st Group Assy 
(Viewed from the objective lens side)

Two cut portion

1st Washer, 1st Lens Adjustment Washer
(Viewed from the objective lens side)

SAL2875 (2.8/28-75 SAM) (28-75mm F2.8 SAM)

2-4

Adhesive bond (B-10): J-6082-612-A

1.  Install the 2nd lens adjustment washer to the unit.
2  Set the index mark and the circular hole to 5 o'clock position in infinity end state, then attach the 2nd group assy to the unit 

and fix them with three screws.

3.  Apply adhesive bond (B-10) to the hole of 2nd group assy in 3 locations, set the index mark and cut portion to the 5:30 posi-

tion, then attach the 2nd lens ornament ring to the unit.

Unit

Index mark

Index mark

Index mark

2nd Group Assy

2nd Lens Ornament Ring

2nd Lens Adjustment Washer

2nd Lens Ornament Ring 
(Viewed from the objective lens side)

Cut portion
(The 5:30 direction 
at infinity end)

2nd Group Assy 
(Viewed from the objective lens side)

Circular Hole
(The 5 o'clock position in infinity end state)

Apply the adhesive
bond (B-10)

Adhesive bond (B-10): J-6082-612-A

How to remove the mount block

1.  Remove four screws.
2.  Set the unit to the TELE end, then remove the mount block with detaching the preset lever from the aperture lever.

Mount Block

Unit

Preset Lever

Aperture Lever

How to install the mount block

1.  Set the unit to the WIDE end, then install the mount block while attaching the preset lever to the aperture lever.
2.  Fix the mount block with four screws.
3.  After finishing the aperture diameter adjustment, tighten the function lever with two screws then apply adhesive bond (B-10) 

to the heads of two screws.

Aperture Lever

Mount Block

Preset Lever

Preset Lever

Apply the adhesive
bond (B-10)

SAL2875 (2.8/28-75 SAM) (28-75mm F2.8 SAM)

2-5

Grease (G-116): J-6082-628-A
Grease (G-85): J-6082-626-A

1.  Apply grease (G-116) to the indicated portion of the main spring guide.

Mount Assy

Main Spring Guide

Apply the grease (G-116)

2.  Apply grease (G-85) to the indicated portion of the mount assy.

Inner side

Outer side

Entrance side

Entrance side

Entrance side

Mount Assy (Cut view)

Mount Assy

Back side of claw 
(3 locations) (entrance side)

Apply the 
grease (G-85)

Apply the 
grease (G-85)

1.  Make fold marks on the flexible of the main board assy as instructed.
2.  Install the flexible from the F gear assy to the connector.
3.  Install the main PCB assy and fix them with two screws.
4.  Install the Z/ECD board and relay board.
5.  Fix the ground 1 with the rear lens barrel assy retaining screw.
6.  Adhere the ground 2 on the cinnabar ring retaining screw.

Fold downward

Fold downward

Fold upward

Main PCB Assy

Main PCB Assy

Relay 
Board

Relay Board

Flexible from the 
F gear assy

Flexible from the 
F gear assy

Rear lens barrel assy 
retaining screw

Cinnabar ring 
retaining screw

Z/ECD Board

Z/ECD Board

Z/ECD Board

Ground 1

Ground 2