TheJackal
Explorer Addict
- Joined
- August 11, 2007
- Messages
- 1,060
- Reaction score
- 4
- City, State
- Mandeville, LA
- Year, Model & Trim Level
- 1999 Explorer XL 2WD
I had to replace my rear wiper motor again and this time, I went with a new Motorcraft that I actually got a good deal on online. After installing the new one, I decided to take apart the old one as there was no core charge.
This was a new Dorman motor which worked for about a year. That was 6 months longer than the reman motor, but still short of expectations.
And the other side:
I was really curious to figure out why these things don't last. Four screws hold on a metal cover onto the case. After removing them, we can see:
You can see the contacts and the metal plate on the gear which comprise the sensing mechanism.
After removing the gasket you can clearly see a lot of white grease accumulating on the sides. It's been pushed out of the area where the gears mesh.
I had this happen once before on an old, cheap portable CD player back in the 90s. It had a metal worm gear that moved the lens carriage, which had a plastic piece that rode in the groove. After about 6 months of use, the CD player began stopping at random in the middle of songs and make all kinds of noise. After opening it, I found the same thing. The carriage would bind in the gear.
You can't tell in this pic but the gear has some damage from the worm gear skipping against it.
So, there you have it. The answer to why reman motors are never as good as Motorcraft and another one of life's mysteries solved. (tho I don't know what grease they use in the Moto one to avoid this)
This was a new Dorman motor which worked for about a year. That was 6 months longer than the reman motor, but still short of expectations.
And the other side:
I was really curious to figure out why these things don't last. Four screws hold on a metal cover onto the case. After removing them, we can see:
You can see the contacts and the metal plate on the gear which comprise the sensing mechanism.
After removing the gasket you can clearly see a lot of white grease accumulating on the sides. It's been pushed out of the area where the gears mesh.
I had this happen once before on an old, cheap portable CD player back in the 90s. It had a metal worm gear that moved the lens carriage, which had a plastic piece that rode in the groove. After about 6 months of use, the CD player began stopping at random in the middle of songs and make all kinds of noise. After opening it, I found the same thing. The carriage would bind in the gear.
You can't tell in this pic but the gear has some damage from the worm gear skipping against it.
So, there you have it. The answer to why reman motors are never as good as Motorcraft and another one of life's mysteries solved. (tho I don't know what grease they use in the Moto one to avoid this)