191837 Shim | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Shim - Part Number: 191837

This genuine Volvo Penta shim is a precision-thickness adjustment shim used to establish bearing preload, shaft end float or gear position used in the lower-gear propeller-shaft and gear-stack clearance adjustment. It is manufactured to the original Volvo Penta dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. Thickness: 0.25 mm. In service, it sets lower-gear bearing preload or propeller-shaft end float. Selection must be confirmed by OEM part number 191837, the exact engine or product model, serial number and installed configuration.

⚙️ Key Features

• Genuine Volvo Penta OEM shim

• OEM part number 191837

• Application: lower-gear propeller-shaft and gear-stack clearance adjustment

• Engine / drive family: Volvo Penta Aquamatic and XDP lower gear units

• Thickness: 0.25 mm.

• Primary function: Sets lower-gear bearing preload or propeller-shaft end float.

• Measure the assembly using the specified workshop procedure and select the required shim combination; do not substitute an unmeasured thickness.

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 191837 (current/original OEM service reference)

OEM / Related Numbers:

• 191837

• 191834 0.10 mm shim

• 191835 0.15 mm shim

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• lower-gear propeller-shaft and gear-stack clearance adjustment

Typically suits:

• Engine / product models:

• 290A

• 430, 430A and 430B

• 431A and 431B

• 432A and 434A

• 500, 500A, 500B, 501A and 501B

• 570, 570A, 572A and 740A

• XDP-B

• Engine / Application Family: Volvo Penta Aquamatic and XDP lower gear units

• Serial / Configuration Note: Use only after the required clearance has been measured.

🔌 Function

Sets lower-gear bearing preload or propeller-shaft end float. Measure the assembly using the specified workshop procedure and select the required shim combination; do not substitute an unmeasured thickness.

Common signs of failure:

• Excessive shaft end float or incorrect bearing preload

• Gear whine, rumble or abnormal contact pattern

• Bearing overheating from insufficient clearance

• Impact loading, fretting or broken gear teeth from excessive clearance

• Distorted, scored or incorrectly stacked shims discovered during overhaul

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging