Audemars Piguet Setting Wheel For Caliber 3120/3126

Quantity	Discount (%)	Price
1 - 2	—	$165.00
3 - 4	5 %	$156.75
5 - 9	7 %	$153.45
10 - 14	10 %	$148.50
15+	15 %	$140.25

Quantity

Discount (%)

Price

1 - 2

—

$165.00

3 - 4

5 %

$156.75

5 - 9

7 %

$153.45

10 - 14

10 %

$148.50

15+

15 %

$140.25

Product Description

This is a genuine Swiss-made Audemars Piguet original 31110 setting wheel (Renvoi de grande moyenne), a critical component within the keyless works of the Caliber 3120 base automatic movement and the 3126/3840 chronograph. Introduced in late 2003 in the Jules Audemars collection, Caliber 3120 later powered iconic references such as the Royal Oak 15300, 15400, and the Offshore Diver. The movement consists of 280 components, beats at 21,600 vph (3Hz), boasts 40 jewels and delivers approximately 60 hours of power reserve.

Positioned directly on the winding stem, this setting wheel toggles between the winding and hand‑setting positions, transmitting torque from the crown to the motion work for precise time adjustment. When the setting wheel exhibits worn teeth, damaged beveled end teeth, or excessive radial play from an enlarged center bore, this OEM factory part is the only reliable solution to restore smooth hand‑setting feel and crisp detent action.

Features & Function

Quantity	Discount (%)	Price
1 - 2	—	$165.00
3 - 4	5 %	$156.75
5 - 9	7 %	$153.45
10 - 14	10 %	$148.50
15+	15 %	$140.25

Genuine Quality: Factory‑produced by Audemars Piguet Switzerland, brand new, fully compliant with original material and precision standards.

Compatible Movements: AP Caliber 3120 (280 components, 40 jewels, 21,600 vph, approx. 60h power reserve) and Caliber 3126/3840 (365 components, 59 jewels, 21,600 vph, approx. 55h power reserve).

Part Number: AP 31110 (international reference number).

Position in the Keyless Works: The setting wheel (31110) is mounted directly on the winding stem. When the yoke shifts the sliding pinion to different positions, the beveled end teeth of the setting wheel engage with the corresponding teeth of the sliding pinion, determining whether crown rotation is directed to the winding or hand‑setting systems.

Role in the Motion Work: Within the keyless works of Caliber 3120/3126, the setting wheel works in concert with the sliding pinion, minute wheel, and yoke to receive torque from the crown and precisely transmit it to the motion work to drive the hour and minute hands.

Relation to the 3126/3840: Caliber 3126/3840 is a chronograph movement built on the base 3120 caliber with a Dubois Dépraz chronograph module stacked on top. The setting wheel’s function and construction remain identical, making this setting wheel universally compatible with both the 3120 and 3126/3840 movements.

Repair Value: Replacement of this OEM part is mandatory when the setting wheel shows worn teeth, damaged beveled end teeth, excessive axial end‑shake, or an enlarged center bore causing radial side‑play, leading to uneven crown resistance, vague detent feel, or slipping during hand‑setting.

FAQ

Q1: My watch has a 3126 chronograph movement. Will this setting wheel fit?
A: Yes. The 3126/3840 is a 3120 base movement with a chronograph module stacked on top. The keyless works components (including the setting wheel) are identical to those of the 3120.

Q2: If the setting wheel is worn, will replacing only this gear solve the problem completely?
A: Not necessarily. If the setting wheel‘s beveled teeth show polished flats, the mating sliding pinion is almost certainly also fatigued. Replacing only the setting wheel will result in mismatched tooth engagement, leading to rapid wear of the new part. Professional repair practice recommends replacing both together as a set.

Q3: Why is my crown very stiff to turn in the hand‑setting position?
A: Two likely causes: ① Dried oil or debris between the beveled teeth of the setting wheel and sliding pinion; ② Binding in the fit between the setting wheel bore and the stem. If cleaning does not resolve the issue, the setting wheel is likely distorted – replace it with a genuine part.

Q4: The spring in the keyless works shifted out of place when I removed the cover. What should I do?
A: Stop immediately. Do not attempt to manually “straighten” and reposition the spring – its pre‑load will be permanently altered. The safest course is to source a genuine replacement spring and yoke and install them fresh when replacing the setting wheel.