14402974 Relay (Volvo Excavator Wiper Relay)

The 14402974 is a dedicated wiper control relay for Volvo excavators. Its primary function is to control the starting, stopping, and intermittent operation of the wiper motor, and it is compatible with mainstream models within the Volvo EC series.

I. Key Parameters

Table

Parameter Item | Specification Details

Model | 14402974 (Alias: VOE14402974)

Brand | Volvo Genuine / Domestic Aftermarket

Type | Wiper Control Relay

Rated Voltage | 24V DC (Standard voltage for construction machinery)

Contact Configuration | Single-Pole Double-Throw (SPDT) / 4-pin & 5-pin universal compatibility

Function | Controls the wiper motor; enables switching between intermittent, high-speed, and low-speed modes

HS Code | 85364110.00 (Electromagnetic Relays)

II. Compatible Equipment and Models

Excavators: Mainstream Volvo models such as EC210, EC240B, EC290, EC360, EC460, etc.

Others: Associated equipment such as Lingong (SDLG) LG6210 (utilizing Volvo technology), etc.

III. Replacements and Compatibility

Direct Replacement: VOE14402974, 14402974 (Fully interchangeable)

Selection Criteria: Must be a 24V relay specifically designed for wiper systems; pin configuration must match the original factory socket.

IV. Procurement and Pricing (2026 Reference)

Table

Type | Domestic Price Quote | International Price Quote (Export) | Remarks

Genuine Parts | ¥280–¥450 / unit | $45–$70 / unit | Via Volvo channels; 6+ months warranty included

Aftermarket Parts | ¥80–¥150 / unit | $12–$25 / unit | Domestic alternative; high cost-performance ratio

V. Troubleshooting and Installation

Failure Symptoms: Wiper fails to operate; only high-speed/low-speed modes are non-functional; intermittent function is abnormal.

Installation Tips: Disconnect power before replacement; verify pin configuration; ensure the wiper motor circuit is functioning correctly.