28 AA fluid capacities

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birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

28 AA fluid capacities

Post by birdacre »

looking for the proper amount of oil for transmission, worm drive rear end. i know some say fill it till it flows out, i would like to know if this was the factory recommendation. also the top ball bearing at end of worm drive. is this to be packed with grease or filled with oil. thank you. kevin
Stakebed
Posts: 1223
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: 28 AA fluid capacities

Post by Stakebed »

Fills till it flows out and keep it topped off.

top bearing gets lubed with the 600W as you drive, later worm drives have a rail that directs the oil flow down to it directly.

if your filling one for the first time after a rebuild dump as much as you can in the top bearing cap to prelube it.
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1crosscut
Posts: 877
Joined: December 25th, 2010, 7:22 pm
Body Type: 82-A
Model Year: 1929
Location: Lincoln, NE

Re: 28 AA fluid capacities

Post by 1crosscut »

Stakebed wrote:Fills till it flows out and keep it topped off.

top bearing gets lubed with the 600W as you drive, later worm drives have a rail that directs the oil flow down to it directly.

if your filling one for the first time after a rebuild dump as much as you can in the top bearing cap to prelube it.
I agree.

Worm drive rear end will take somewhere around 1 1/2 qt.
Transmission will be 1/2 qt or so. Dual High in the same ball park.
------------
Dave
Stakebed
Posts: 1223
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: 28 AA fluid capacities

Post by Stakebed »

Should be noted the stuff is like pouring cold syrup, so fill it to the top and let it sit as it will slowly fill all the crevices and in between gears etc - especially in the dual high. So fill them up till you think its full then check them in an hour again and make sure.
KimVanOrder
Posts: 753
Joined: August 11th, 2013, 4:25 pm
Body Type: 82-A Platform
Model Year: 1928
Location: Hamilton, Mich.

Re: 28 AA fluid capacities

Post by KimVanOrder »

Heat the Oil before you pour it in. Saves time standing there waiting.
KVO
Dec. '28 AA
holdover
Posts: 16
Joined: September 26th, 2016, 7:06 am
Body Type: AA
Model Year: 1930

Re: 28 AA fluid capacities

Post by holdover »

"Worm drive rear end will take somewhere around 1 1/2 qt.
Transmission will be 1/2 qt or so. Dual High in the same ball park."

forget posted qty, just fill until it wont take any more to be on the safe side, and check it often
Chris Reed
Posts: 39
Joined: November 8th, 2016, 4:50 am
Body Type: Dump
Model Year: 1931
Location: Dresher PA

Re: 28 AA fluid capacities

Post by Chris Reed »

600W is correct for both the Trans (4spd) and Rear?
Stakebed
Posts: 1223
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: 28 AA fluid capacities

Post by Stakebed »

Yes 600W goes in:
trans (both 3 and 4 speeds)
dual high
worm and bevel rear ends
steering gearbox.

Some mix 50/50 600W and STP oil treatment to make it extra clingy and add some zinc to the goop.
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