Mitsubishi FGC30:
Broken Timing belt

Is changing the timing belt a difficult task on this unit? I have a Mitsubishi model FGC30 serial AF83B-00889
  • Posted 4 Aug 2015 06:50
  • Discussion started by Bundy
  • California, United States
Showing items 1 - 4 of 4 results.
You can check the valves if you like but you will most likely not find any bent. But if you want piece of mind then by all means do so.
in my years of experience and doing many of these timing belt replacements i have yet to come across one that has had the valves damaged from a timing belt problem because in the majority of failures i have witnessed the belt wears and jumps teeth during the start phase of cranking and not while running.
I suppose there is a remote chance it may happen but i've never seen it happen.
  • Posted 4 Aug 2015 23:52
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Thank you for the info. I was going to attempt to make the repair on my own, though now I'm being told that the valves must be checked to see if they were bent due to the timing belt breaking.
  • Posted 4 Aug 2015 23:25
  • Reply by Bundy
  • California, United States
yep what edward says is true
the crank and oil pump markers are clearly marked on the case with raised indicators, the only one thats hard to find is the cam marker, it is marked on the timing cover, that one is located at about the 9 oclock position about where the seam is where the head meets the engine block. Just look closely and you will see it. As for the indicators on the gears the cam gear has a dot etched into the gear, that one is light so look carefully, same for the oil pump gear, it has a dot on it etched into it but also has a defeflector washer behind the gear with a knotch cut out of it aligned with the dot on the gear.

also even when you get all the marks lined up and get the belt on take extra care to watch the alignment marks after you tighten up the idler pulley, it is very easy to get off one tooth. Yes... even a single tooth will make the engine run poorly, so make sure it is on the marks after you're done.
I have also seen many techs try to skip the oil pump gear timing mark but trust me... it makes a difference, if you do not line up that marker the engine will have a vibration in it.
  • Posted 4 Aug 2015 20:58
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
if you have never done one before, you will NEED to have someone that has done one to show you the timing marks, they are not all that clearly marked.
  • Posted 4 Aug 2015 07:47
  • Reply by edward_t
  • South Carolina, United States
"it's not rocket surgery"

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