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Compact articulating boom for lifting into tight, obstructed spaces.
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The GM-8000 is Maniar's highest-capacity vacuum truck, an 8,000-liter unit mounted on a 16-ton GVW chassis, for municipal and industrial liquid waste removal — the only model in the range with a hydraulically operated suction hose reel, on top of the full hydraulic tipping, door opening, and door locking carried over from the GM-5000.
Page last updated: September 9, 2026
A 540 cum/hr vacuum pump — the highest flow in the GM-series — driven off the vehicle's gearbox-fitted PTO, generates high vacuum in the tank to siphon effluent, liquids, and sludge out of sewer lines, septic tanks, lift stations, and catch basins through a 4" x 15m suction hose. A sludge stirring arrangement uses high-velocity air to convert solid silt into a liquid or semi-liquid slurry the pump can draw up, and a blow-back system can then discharge just the water content of the tank under pressure, so the load carries away the sludge without hauling unwanted water weight. The hydraulically operated hose reel winds and unwinds the suction hose without manual handling, and once full, the tank tilts hydraulically and the rear door opens and locks hydraulically at the disposal site.
The suction hose is sized to match the vacuum pump's flow, so the hose itself doesn't choke the pump. The GM-8000's 540 cum/hr vacuum pump — the highest flow in the GM-series — pairs with a wider 4" (100mm) suction hose, compared to the 3" (75mm) hose used on the GM-3500T, GM-3000, and GM-5000 at 390 cum/hr.
Available hydraulic features vary across the GM-series by tank size. The GM-8000 has the full set:
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Yes — the GM-8000 is the only model in the GM-series with a hydraulically operated suction hose reel, on top of the hydraulic tipping, door opening, and door locking carried over from the GM-5000.
A 4" (100mm) hose, matched to its 540 cum/hr vacuum pump flow — the highest suction flow in the GM-series.
Yes — a derrick arm is available as an option on every model in the GM-series, including the GM-8000.
The GM-8000 carries a larger tank (8,000L vs. 5,000L) and higher suction flow (540 cum/hr vs. 390 cum/hr) with a correspondingly larger suction hose, and adds a hydraulically operated suction hose reel not available on the GM-5000.
