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1989 Chevy Truck Timing Gears

Tiny
MGG2165
  • MEMBER
  • 1989 CHEVROLET TRUCK
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 174,000 MILES
I am having to replace the Timing Cover, Chain and both gears. I pulled everythig of and with out moving the cam shaft or crankshaft put the new chain and gears back on. I noticed that on the gears there are on both gears 2 small counter sunk holes are they supposed to line up? I am at the point where I am puttong on the Timing Cover and thats when I noticed this.
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Wednesday, March 5th, 2008 AT 4:29 PM

2 Replies

Tiny
M8TRIX01
  • MEMBER
  • 36 POSTS
Yes they should line up the cam gear the notch on the bottom and the crank gear the notch on top.
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Wednesday, March 5th, 2008 AT 4:32 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Yes I believe they are. Have you rotated engine and see if they line up? They will line up on top dead center at 0 degress.
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Wednesday, March 5th, 2008 AT 4:34 PM

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