Komatsu Excavator Ignition Switch 20S-06-31130 with Keys
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Komatsu PC05-6/7, PC07-1/2, PC10-6/7, PC12R-8, PC12UU-1/2
- Komatsu PC15-2/3, PC15MR-1, PC15R-8, PC18MR-2/3
- Komatsu PC20-6/7, PC20MR-1/2/3, PC20R-8, PC20UU-3
- Komatsu PC25-1, PC25R-1/8, PC26MR-3, PC27MR-1/2/3, PC27R-8
- Komatsu PC28UD/UG/UU, PC30-6/7, PC30MR-1/2/3, PC30R-7/8, PC30UU-3
- Komatsu PC35MR-1/2/3, PC35R-8, PC38UU, PC40-6/7, PC40MR, PC40R, PC45-1/MR/R
- Additional Komatsu PC, PW, SK, WB, and WH machines only after serial and switch verification
Product Overview
A worn key barrel can jam, turn without clear positions, drop accessory power, or fail to energize the starter relay. Before replacing it, test battery voltage, main disconnect, fuses, relays, neutral interlocks, and harness connections.
The switch distributes keyed power to the machine control and starting circuits. It will not correct a starter motor, controller, interlock, or charging-system fault.
Match the connector or terminals, bezel, mounting body, key positions, original number, machine serial number, and cab or canopy configuration. The 20S switch family covers many machines with serial breaks.
Key Features & Performance
- Keyed multi-position starting switch
- Includes two matching keys
- Replacement connector layout for the listed Komatsu references
- Suitable for switch wear, water damage, or broken-key service
Replaces Part Numbers
- 20S-06-31130
- 20Y-06-24680
- 08086-20000
Common Uses
- Repairing intermittent keyed power
- Replacing a switch damaged during an attempted theft
- Restoring clear OFF, RUN, and START positions
Technical Specifications
- Product Type: Ignition / starting switch with keys
- Brand Compatibility: Komatsu
- Primary Reference: 20S-06-31130
- Condition: New aftermarket replacement
Installation & Fitment
- Turn off the battery disconnect
- Record every wire or connector position
- Compare terminal markings and switch positions
- Tighten the bezel without cracking the panel
- Test neutral lockout, shutdown, and starting functions
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Will it fit a PC30-7? A: It is listed for compatible PC30-7 machines, but the serial number, terminals, and original switch must match.
Q: Can the switch cause the engine to stop while working? A: A failing contact can interrupt keyed power, but wiring, fuel shutoff, controller, and charging faults should also be checked.
Q: Does it bypass machine interlocks? A: No. All safety interlocks must remain functional.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Komatsu 20S-06-31130 switch, PC30-7 ignition key switch, PC35R-8 starter switch, 08086-20000 replacement, Komatsu excavator no crank repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.