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Encoder motor maintenance

FROM AWD'S TO 2-SPEED MANUAL SHIFT, IF IT LINKS THE REAR AXLE TO THE FRONT AXLE, POST IT HERE.
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Captn. Crunch
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Encoder motor maintenance

Post by Captn. Crunch »

The last couple of weeks I’ve been getting the dreaded clicking from the tccm on startup. This hasn’t been every day and the service light has also been occasional. The weather is calling for a Nor’easter on Wednesday so I figured I’d take a look.
Dropped the front prop shaft and pulled the encoder motor. On the work bench I pulled the gasket/spacer and found the standard scale buildup. Removed all of that the other a putty knife. I scored the face making two lines so I could reorient the motor indent. I poured a couple of oz’s of light machine oil into the recess. I worked the mechanism stop to stop with a 1/2” ratchet for a minute or so. Reassembly was fine except for the prop shaft. With the van in the air you can turn the front wheel to reorient the flange. With all four wheels on the ground you have to take a couple of stabs at the proper placement on the splines to match the bolt holes on the flange.
Ignition on and no clicking so here’s to hoping that’s all it needed was a little TLC.
Two wheel Gravely maintenance tomorrow and I’ll be ready for the 6”-12” they are calling for
Captn. Crunch
"I don't beat my rig-I use it to it's maximum potential"
1994 Safari conversion (sold) and miss'n it!
1999 Safari SLE AWD junked
2003 GMC Safari AWD SLT
cast iron Torsen equipped front diff
S-10 leafs-G80 rear w/3.73’s
2” body lift w/Falken Wildpeak AT’s

Astrophysics
I sleep in my van
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How many wheels are on an Astro van? (4): 4

Re: Encoder motor maintenance

Post by Astrophysics »

Hi Captain,

Good job on that encoder.

I hope to spend more time and $ with my 2003 Astro in Jan and Feb. 2021.
4.10 re gear from 3.42 to better spin the 30” tires. And Eaton tru Trac Torsen style in rear.

Merry Christmas

AP

Topic author
Captn. Crunch
Site Admin
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Posts: 556
Joined: Wed Feb 01, 2012 8:10 pm
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How many wheels are on an Astro van? (4): 4
Location: southeastern ct
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Re: Encoder motor maintenance

Post by Captn. Crunch »

I LOVE TRUETRAC!!! 4.10 re-gear sounds nice. I’ve got the 3.73’s which work pretty good. Maybe one day I’ll lift the van high enough to fit 33”s and will re-gear with 4.56’s 😬
Or just enjoy what I have and stop looking for ways to finally find out just how far you can go before it blows up in your face
Captn. Crunch
"I don't beat my rig-I use it to it's maximum potential"
1994 Safari conversion (sold) and miss'n it!
1999 Safari SLE AWD junked
2003 GMC Safari AWD SLT
cast iron Torsen equipped front diff
S-10 leafs-G80 rear w/3.73’s
2” body lift w/Falken Wildpeak AT’s

Astrophysics
I sleep in my van
Posts: 873
Joined: Sun Jan 13, 2008 5:23 am
antispam: No
How many wheels are on an Astro van? (4): 4

Re: Encoder motor maintenance

Post by Astrophysics »

Hi Captain,

In mid March, I have an appointment to have my 2003 Astro re-geared from 3.42 to 4.10, and Eaton Tru Trac added to rear. Daylight savings time starts 14 March so the shop will have more daylight.
The weekend before the re gear, I need to remove the 3 aluminum skid plates , front approach plate, front diff, and T case to save them some wrenching time.

Astrophysics
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