ROCKERS AND CAMSHAFTS Camshafts
Disassembly sequence 1 2 3 4 5 6
Intake camshaft gear Key Intake camshaft Exhaust camshaft gear Key Exhaust camshaft
: Non-reusable parts
NOTE • Do not remove the camshaft gears unless defects are evident.
Assembly sequence Follow the disassembly sequence in reverse.
NOTE • The exhaust camshaft gear has the sensor plate. Do not mistake it for the intake camshaft gear. If the gears are incorrectly installed, engine malfunction will occur.
Service standards (Unit: mm {in.}) Location
Maintenance item
Standard value
Limit
Remedy
0.007 to 0.041 {0.00028 to 0.0016}
–
Replace
Cams for long rockers
7.21 {0.284}
7.16 {0.282}
Cams for short rockers
9.269 {0.365}
1, 3, 4, 6 Camshaft gear-to-camshaft interference
3
Mitsubishi 4M50 Intake camshaft
Cam lift
Bend
6
Mitsubishi 4M50 Cam lift Exhaust camshaft Bend
Replace Lobe height:44.281 {1.74} 9.219 {0.363} Base circle diameter: 35.012 {1.38}
0.01 {0.00039}
0.03 {0.0012}
Cams for long rockers
7.184 {0.283}
7.134 {0.281}
Cams for short rockers
9.242 {0.364} 0.01 {0.00039}
Lobe height: 42.219 {1.66} Base circle diameter: 35.009 {1.38}
Replace Lobe height: 42.279 {1.66} Base circle diameter: 35.095 {1.38}
Replace Lobe height: 44.359 {1.75} 9.192 {0.362} Base circle diameter: 35.117 {1.38} 0.03 {0.0012}
Replace
Removal procedure Removal: Camshaft gears • Remove the camshaft gear by pushing on the camshaft using a press.
CAUTION • Do not use a hammer to remove the camshaft gear. Be sure to use a press for this purpose.
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