Nikon AF-S DX Zoom Nikkor 18-135/3.5-5.6G ED, Repair Manual

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JAA79651-R.3695.A
- Ａ 43・AF-S DX 18-135/3.5-5.6G -
4.
Fix the aperture lever so that the aperture becomes full.
5
．
Read each value of WIDE, MIDDLE (50 mm) and TELE sides.
6
．
Calculate as follows:
（
C
－
B
）
÷ 1.8
＝
E A
＝
Value at MIDDLE
（
50 mm)
B
＝
Value at WIDE side
C
＝
Value at TELE side
D
＝
Adjustment amount (mm) of the washer (#79) of the 2nd lens group
7. Increase/decrease the washers (#79) for adjusting the thickness by the above
"
D
"
value. If
"
D
"
is plus,
increase the thickness of it, while it is minus, decrease the thickness of it.
8. Increase/decrease the washers (#80) for adjusting the thickness by the above
"
E
"
value. If
"
E
"
is plus, increase
the thickness of it, while it is minus, decrease the thickness of it.
Note 1: Regarding the 1st lens-G washer, the more-than 0.4-mm thickness in total cannot be put. If
the washers in 0.4-mm thickness are already put, in addition, the result of " C-B " becomes " plus " , it is
necessary to select and adjust by using the 2nd lens-G washer. In this case, use the following formula.
Note 2: When the washers (#79 and #80) are put, place a thin washer between thick washers.
★
New tool
(
A
－
B
）
÷ 2.2
＝
E
E
＝
Adjustment amount (mm) of the washer (#80) of the 1st lens group
1. Rotate and set the zoom ring to TELE-end.
2. Rotate and set the focus ring to infinity-end, and attach the tape in appropriate length on the focus ring and the
outer fixed-tube unit.
3. Start up the adjustment software (
★
J18411), and perform "
∞" positioning by "Positioning to Infinity for
FFD Adjustment" of the main menu.
Tape in appropriate length
Focus ring
Outer fixed-tube unit
Adjustment (Division) of Focus movement (T, W)
[Note: ÷ (divided by)]
(
C
－
B
）
÷ 5
＝
D