Bucher 10V Coil | Hydraulic Pump Valve
1019660
$68.00
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Bucher 2-Way Hydraulic Power Unit | 3 qt Poly
PM-3551-0667
$631.00
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The Bucher PM-3551-0667 2-Way Hydraulic Power Unit is a compact 12V double-acting HPU with a 3-quart high-density polyethylene reservoir — the small-footprint version of the PM-3551. It powers cylinders both up and down at 2,500 PSI, fitting in tight installations where the full 2-gallon reservoir won't fit.
Which Bucher 2-way HPU should I choose — 3-quart or 2-gallon?
Pick the 3-quart for small or short-cycle cylinders where reservoir volume isn't the limiter and mounting space is tight. Pick the 2-gallon when you have room and the cylinder pulls a lot of fluid each cycle, or when extended duty would heat a smaller reservoir past spec.
- 12V DC, 2-Way (Power Up / Power Down) — double-acting
- 3-quart high-density polyethylene reservoir (compact)
- 2,500 PSI operational pressure
- 1.5 GPM max oil flow
- #6 SAE hose connections
- Operating temp: -20°F to 130°F
- Recommended fluid: ATF (Automatic Transmission Fluid)
- Bucher PM-3551-0667 — made in USA, 100% tested
For the larger 2-gallon version of the same circuit, see the Bucher 2-Way HPU (PM-3551, 2 gal). For bale-spear-specific use, see the Bucher Bale Spear HPU (PM-3554).
Specifications
Operating Voltage
12 Volts DC
Max Oil Flow (gpm)
1.50
Operational Pressure (psi)
2500
Reservoir Capacity
3 Quarts
Reservoir Material
High Density Polyethylene
Hose Connections
#6 SAE
Recommended Fluid
ATF (Automatic Transmission Fluid)
Operating Temperature Range
-20ºF to 130ºF (-30ºC to 55ºC)
Replacement Parts (3)
Bucher 12V Pump Solenoid | Style 2
P050T
$42.00
Bucher Hydraulic Pump Valve | Fits PM-319
P07193
$176.00
FAQs (3)
What maintenance is recommended for these Hydraulic Power Units?
Every 2-3 months, check electrical connections for corrosion and tightness from unit to battery. Check the fluid condition and level. Inspect the breather/filler cap as well for missing foam or dirt. Every year we recommend changing out your hydraulic fluid.
What fluid is recommended in this Hydraulic Power Unit?
We recommend ATF (Automatic Transmission Fluid) for almost every case. In very low temperatures (Below -20°F / -30°C) the ATF will thicken. In this cold weather, ensure the reservoir is filled to the recommended level and consider preheating the fluid or using a reservoir heater.
Can I use this hydraulic power unit to run my hydraulic winch?
Short answer: No. Long answer: Yes, but it will be a slow, sad, and disappointing experience. While the operating pressure is often correct, the 1.5 gpm (gallons per minute) vs the 15 gpm of a clutch or PTO pump is going to be a tenth of the performance you'd want at best.
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