MY M1009 was shaking worse over the last 3 or 4 days. I went through the TM and tried to determine which fixes were probable. The Fuel pump (LIFT PUMP) was on the list. I had one on my shelf, and I didn't remember replacing it since I bough the rig in 2011, so I put it in. The pushrod was the main hold-up on the job- I could not get it lifted to make way for the pump. I finally took off the backing plate and removed the pushrod. Bit of AEROSHELL 33ms and it stayed up to allow me to finish the install with no other issues. I did remove the passenger side alt and bracket to make room- glad I did.
The shaking and vibration at idle and in the slot between idle and 45 MPH continued driving me mad, so I picked up a Harmonic Balancer. PowerBond OEM - Harmonic Balancer P/N PB1102N at Oreilly. My pulley install kit did not have the needed shaft, but I was able to cobble one together by borrowing the larger kit from AUTOZONE (Deposit $75.). Here are some pics of the parts used. I ended up removing and replacing the HB twice, because I forgot to replace the Front seal. Tool held up well, my hand took a beating turning the crescent wrench a few hundred turns.
Back on the road again, no front main leak, no vibration, real tight get up and move feeling. Now I have to figure out what I can use the old Harmonic Balancer for.
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