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.
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HOMESERVICE MANUALSMITSUBISHI2004ECLIPSE L4-2.4L SOHCREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLDISC BRAKE SYSTEMSERVICE AND REPAIRFRONTDISASSEMBLY AND ASSEMBLY
2004 Mitsubishi Eclipse L4-2.4L SOHC
Disassembly and Assembly
2004 Mitsubishi Eclipse L4-2.4L SOHCSECTION Disassembly and Assembly
DISASSEMBLY AND ASSEMBLY
<2.4L ENGINE>
<3.0L ENGINE>
LUBRICATION POINTS
<2.4L ENGINE>
<3.0L ENGINE>
DISASSEMBLY SERVICE POINTS
When disassembling the disc brakes, disassemble both sides (left and right) as a set.
<> PISTON BOOT/PISTON REMOVAL
CAUTION: Blow air little by little to remove the piston. The piston will rush out if a force of air is applied suddenly.
Place a piece of wood, etc. against the caliper body as shown.
Blow compressed air through the brake hose to remove the piston boot and piston.
<> PISTON SEAL REMOVAL
CAUTION: Do not use a flat-tipped screwdriver or similar tool to remove piston seal. These may damage the inner side of the cylinder.
1. Remove the piston seal with your finger tip.
2. Clean the piston surface and inner cylinder with alcohol or brake fluid DOT 3 or DOT 4.
ASSEMBLY SERVICE POINTS
>>A<< LOCK PIN/GUIDE PIN INSTALLATION <2.4L ENGINE>
Install the guide pin as illustrated that each head mark of the guide pin and the lock pin matches the indication mark ("G" or "L") located on the caliper body.
>>B<< BUSHING/LOCK PIN/GUIDE PIN INSTALLATION <3.0L ENGINE>
Install the bushing and lock pin to the bleeder nipple side at the caliper body, the guide pin to its opposite side, respectively.
INSPECTION
^ Check the cylinder for wear, damage or rust.
^ Check the piston surface for wear, damage or rust.
^ Check the caliper body or sleeve for wear.
^ Check the pad for damage or adhesion of grease, check the backing metal for damage.
PAD WEAR CHECK
WARNING:
^ Always replace both brake pads on each wheel as a set (both front wheels or both rear wheels). Failure to do so will result in uneven braking, which may cause unreliable brake operation.
^ If there is significant difference in the thickness of the pads on the left and right sides, check the sliding condition of the piston, lock pin and guide pin.
Measure thickness at the thinnest and most worn area of the pad.
Replace the pad assembly if pad thickness is less than the limit value.
Standard value: 10 mm (0.39 inch)
Minimum limit: 2.0 mm (0.08 inch)
<2.4L ENGINE>
<3.0L ENGINE>
LUBRICATION POINTS
<2.4L ENGINE>
<3.0L ENGINE>
DISASSEMBLY SERVICE POINTS
When disassembling the disc brakes, disassemble both sides (left and right) as a set.
<> PISTON BOOT/PISTON REMOVAL
CAUTION: Blow air little by little to remove the piston. The piston will rush out if a force of air is applied suddenly.
Place a piece of wood, etc. against the caliper body as shown.
Blow compressed air through the brake hose to remove the piston boot and piston.
<> PISTON SEAL REMOVAL
CAUTION: Do not use a flat-tipped screwdriver or similar tool to remove piston seal. These may damage the inner side of the cylinder.
1. Remove the piston seal with your finger tip.
2. Clean the piston surface and inner cylinder with alcohol or brake fluid DOT 3 or DOT 4.
ASSEMBLY SERVICE POINTS
>>A<< LOCK PIN/GUIDE PIN INSTALLATION <2.4L ENGINE>
Install the guide pin as illustrated that each head mark of the guide pin and the lock pin matches the indication mark ("G" or "L") located on the caliper body.
>>B<< BUSHING/LOCK PIN/GUIDE PIN INSTALLATION <3.0L ENGINE>
Install the bushing and lock pin to the bleeder nipple side at the caliper body, the guide pin to its opposite side, respectively.
INSPECTION
^ Check the cylinder for wear, damage or rust.
^ Check the piston surface for wear, damage or rust.
^ Check the caliper body or sleeve for wear.
^ Check the pad for damage or adhesion of grease, check the backing metal for damage.
PAD WEAR CHECK
WARNING:
^ Always replace both brake pads on each wheel as a set (both front wheels or both rear wheels). Failure to do so will result in uneven braking, which may cause unreliable brake operation.
^ If there is significant difference in the thickness of the pads on the left and right sides, check the sliding condition of the piston, lock pin and guide pin.
Measure thickness at the thinnest and most worn area of the pad.
Replace the pad assembly if pad thickness is less than the limit value.
Standard value: 10 mm (0.39 inch)
Minimum limit: 2.0 mm (0.08 inch)
RENDER: 1.0x
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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.