Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2006 Mitsubishi Lancer EvolutionFACTORY OEM SERVICE PROCEDURE

Commutator Check

WARNING: This page is about a different variant/trim than selected.

Place the armature on a pair of V-blocks, and check the deflection by using a dial gauge.
Standard value: 0.05 mm (0.002 inch)

Limit: 0.1 mm (0.004 inch)

Fig 1: Placing Armature On Pair V-Blocks
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Check the outer diameter of the commutator.
Standard value: 29.4 mm (1.16 inch)

Minimum limit: 28.8 mm (1.13 inch)

Fig 2: Checking Outer Diameter Of Commutator
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Check the depth of the undercut between segments.
Standard value: 0.5 mm (0.02 inch)

Minimum limit: 0.2 mm (0.008 inch)

Fig 3: Checking Depth Undercut Between Segments
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.