Hoist Bushings
The piston cups do not seal perfectly, so there will always be some leakage.
1.) Determine the size bushing needed. Bushing size matches the ID of the cylinder. Cylinder OD can be measured and used in chart below to determine bushing size.
For Hoists RW0150, RW0160, and RW0560.
ID CYLINDER | OD CYLINDER | BUSHING SIZE | BUSHING LOCATION | BUSHING P/N |
2.5" | 3" | 2.5" | TOP | RW0280-1-25 |
2.5" | 3" | 2.5" | MIDDLE | RW0280-8-4 |
2.5" | 3" | 2.5" | BOTTOM/LOWER | RW0280-8-2 |
For Hoists RW0260, RW0360, and RW0460.
ID CYLINDER | OD CYLINDER | BUSHING SIZE | BUSHING LOCATION | BUSHING P/N |
3" | 3.5" | 3" | TOP | RW0280-1-25 |
3" | 3.5" | 3" | MIDDLE | RW0280-8-4 |
3" | 3.5" | 3" | BOTTOM/LOWER | RW0280-8-2 |
2.) Electric hoists (RW0360 and RW0460) only have 2 bushings.
![]() RW0281-1-25 |
Top Cylinder Bushing = 4 countersinks or dimples, no through holes or threads |
![]() RW0281-8-2 |
Lower Shaft Bushing = 2 tapped through holes, 90 degrees apart |
3.) All others have 3 bushings.
Top Cylinder Bushing = 4 countersinks or dimples, no through holes or threads | ||
![]() RW0280-8-4 |
![]() RW0281-8-4 |
Middle Stop Shaft Bushing = 3 tapped through holes, 120 degrees apart |
![]() RW0280-8-2 |
![]() RW0281-8-2 |
Lower Shaft Bushing = 2 tapped through holes, 90 degrees apart
|
4.) About 30 RW0360 hoists built prior to 1995 had a solid shaft which was a smaller diameter. These use a flanged top bushing with 2.25” ID and 2.5” OD with p/n RW0282-1-25 and bottom bushing RW0280-8-2.
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RW0282-1-25 | RW0280-8-2 |
5.) Barbee 360 hoist bushings are different from Northern RW0360 bushings. Contact Barbee for replacements.
6.) Barbee 285 hoist (similar to our RW0560) bushings are a press-on style bushing. Contact Barbee for replacements.
Instructions for Piston Removal
1.) Raise cylinder of hoist all the way up and then down just a small amount.
2.) Remove all pressure on the cylinder and remove the top bushing.
3.) As you remove the shaft, oil will go everywhere.
4.) Put old top bushing back in. Cover the cylinder with a pail or something to deflect oil from going everywhere.
5.) Put a little air pressure on the cylinder to move the piston up.
- If you forget to put old top bushing back in, the piston and oil will shoot out the top.
6.) Relieve the pressure and the piston cup will stay up. A 3/8”-16 bolt can be threaded into the piston cup for removal.
- If replacing a piston cup that is older than ~ 2012, it should be replaced with a whole assembly. The old design snaps when barely tight. The new design is much more robust. The new ones have a weld at the stem to the base.