EndlessMtnFab
NAXJA Forum User
- Location
- Paxtonia, PA
All the spider gears removed but the piston still intact. To remove the piston, you simply give a slight twist (it locks into the sliding gear).
All the spider guts layed out on the table. The one in the top corner is the gear that engages to the case (to create the spool).
All the parts layed out.
Replace all the parts that need changing (whether worn or preventative maintenance) and then reassemble as you go.
Starting the reassembly at this point .... the springs are in the bare case.
Two side spiders installed. These use short shafts that partially engage into a center block. The block is not installed in this picture. The other 2 spiders use a full length shaft and everything ends up locking into place via dowels.
Use fresh lube and coat all washer surfaces (like the spider washers, thrust washers, etc) and coat the sliding surfaces for the piston & U-washer. It is also a good idea to put a light coat on the spider gear shafts. The rest of the assembly can be installed dry for now and will be lubricated after I fill the housing with oil.
And that's a wrap .... new cap bolts installed. Just need to tap the locking tabs home. Obviously, I need to install the other half, but that will come when I install the ring gear back on.
And there you have it ... a quick recap of how to rebuild an ARB. The new units are very similar inside that you can use this pictoral as a guide, if need be.

All the spider guts layed out on the table. The one in the top corner is the gear that engages to the case (to create the spool).

All the parts layed out.

Replace all the parts that need changing (whether worn or preventative maintenance) and then reassemble as you go.
Starting the reassembly at this point .... the springs are in the bare case.

Two side spiders installed. These use short shafts that partially engage into a center block. The block is not installed in this picture. The other 2 spiders use a full length shaft and everything ends up locking into place via dowels.

Use fresh lube and coat all washer surfaces (like the spider washers, thrust washers, etc) and coat the sliding surfaces for the piston & U-washer. It is also a good idea to put a light coat on the spider gear shafts. The rest of the assembly can be installed dry for now and will be lubricated after I fill the housing with oil.

And that's a wrap .... new cap bolts installed. Just need to tap the locking tabs home. Obviously, I need to install the other half, but that will come when I install the ring gear back on.
And there you have it ... a quick recap of how to rebuild an ARB. The new units are very similar inside that you can use this pictoral as a guide, if need be.