| 455 [message #350559] |
Sat, 07 December 2019 19:23  |
Melbo
Messages: 144
Registered: August 2018
Location: Albuquerque NM
Karma:
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I have done the fuel tanks and have the onan making electricity again. Now I am starting on the 455. I pulled the fuel pump and looked with a mirror at the cam timing gear. It appears to have the nylon coating on the teeth. It has a reddish looking material along the edge and teeth of the gear. The rest of the gear is silver. I'm guessing that is the nylon coating. When I used to replace them in the early seventies the nylon coating was typically white on the pontiac motors I worked on. If this is something different please let me know. So if I am going to pull the timing chain and gears would it be a good idea to check the compression before I do that JUST in case there is more work to be done? I will change the oil and filter pull the dizzy and run a drill on the oil pump and put oil in the cylinders before the compression tests. I would replace the water pump and have the alternator and starter gone over while I am into the motor BUT I am wondering if there is anything else I should do. If the compression is bad or majorly uneven between cylinders the project just got bigger. The odo only shows 60K and with the nylon coating still there I'm thinking that could be accurate. Any thoughts or sense of direction is always appreciated.
Melbo
Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
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