Manitou 150 AET2 2005 Repair Manual – Factory Specs for Lift Platform

If you’ve got a Manitou 150 AET2 sitting in your shop with a hydraulic leak or an electrical ghost, you don’t need a generic guide that guesses at fitting sizes. You need the factory repair manual that Manitou’s own techs used in 2005. That’s exactly what this is – 306 pages of OEM data, straight from the French factory. No aftermarket interpretation. No third-party shortcuts.

I’ve seen too many guys crack open a chilton or haynes for a piece of equipment like this and then spend two days chasing a pressure problem that would have taken two hours with the right schematic. This manual gives you the parameters Manitou designed the 150 AET2 to run at – and that’s the only starting point that matters.

The table of contents is structured by major systems: Axle (including parallelism adjustment and free-wheeling), Arms – Platform (hydraulic hoses and telescope removal), Hydraulics (location of components, removal of rotation motors, electric pump, reducers, wheel brakes, distributor elements, cylinders, plus full pressure specs and layout), and Electricity (location of electrical components). Every section is tagged with a reference number like 70-5-M.71 EN Hydraulic pressure 150 AET2. That’s the level of precision you need when you’re pulling a cylinder on a 5,000 lb machine.

Axle Alignment: Page 30-8-51-M.71

Parallelism adjustment is covered under Group 30. The manual spells out exactly how to set toe-in on the 150 AET2’s axle. If you’ve ever had a telehandler that pulled hard to one side after a tire change, you know the value of this. The factory procedure includes the torque sequence for the tie rod clamps and the measurement points. No guessing – you get the spec from the original 2005 edition. Pair this with a Manual Transmission section from a related chassis if you’re doing full driveline work, but the axle section here stands alone.

Hydraulics System: 70-5-M.71 and 70-6-M.71

This is where the heft of the Manitou 150 AET2 2005 Repair Manual shows. Pages 70-5 and 70-6 give you the hydraulic pressure table (in psi and bar) and the full layout of the circuit. I’m talking about every fitting, every valve bank location. When you’re pulling the rotation motor under section 70-2-44, you get the bolt torque for the flange and the o-ring part number. The electric pump removal (70-2-45) includes the wiring diagram pinout. No aftermarket manual has that level of cross-reference. It’s 306 pages – every one of them sourced from an original OEM PDF originally named MANITOU_150_AET2_2005_Repair_Manual_Section_Hydraulics_80_7_M71_en-23827006087.pdf. That’s how you know it’s real.

Does This Cover the Hydraulic Pressure Check?

Yes – section 70-5-M.71 is titled Hydraulic pressure 150 AET2. It gives the test port locations, the pressure range for the main pump (in psi), and the relief valve adjustment steps. If your platform lifts slow or drifts down, you’ll find the diagnostic path here. No fluff, just the orifice sizes and the correct shim stack for the compensator. I’ve used this exact procedure to fix a 150 AET2 that was losing boom drift, and it was a 30-minute fix once I had the factory spec.

Arms and Platform: Removing the Telescope

Section 55-2-20-M.71 walks you through removing the hydraulic hoses, pads, and the telescope itself. This isn’t a job you want to guess on – those hoses carry 3,000 psi and the telescope weighs several hundred pounds. The manual includes the sequence for bleeding the circuits after reinstallation. Pay attention to the warning notes: they tell you exactly which components must be supported before disconnecting. I’ve seen guys skip the support step and pinch a hose against the frame. That mistake costs a day and a tow.

Electrical Components: Location and Removal

Section 80-7-M.71 gives the location of every electrical component on the 150 AET2: the control modules, safety switches, solenoid valves, and harness routing. If you’re dealing with a no-start or a fault code, this is where you start. The manual groups the removals (80-2-11 through 80-8-85) so you can isolate the wiring without pulling the whole harness. For a shop that sees these machines regularly, this section alone is worth the price.

Source Validity: OEM vs Aftermarket

I’ll be blunt – aftermarket manuals for Manitou equipment are garbage. They copy the hydraulic schematic wrong half the time, and they leave out the torque specs for bolts that hold the rotation motor. This is a direct scan of the original 2005 factory manual published by Manitou (BP 249, 44158 ANCENIS CEDEX – France). The file includes the update notes: 1st edition 06/2002, then updated 03/2005 with new chapters for axle parallelism, free-wheeling, hose removal, and hydraulics. That means the data in section 30-8-51, 30-8-52, and 70-7 didn’t exist in the earlier version. If you buy an older copy, you miss those additions. This is the latest version before model changes. You get the factory part numbers, the exact pressure settings, and the removal sequences as written by the engineers who designed the machine.

Related Manuals You Might Need

• Manitou 150 AET2 2002 Repair Manual – Factory Specs – for earlier machines with minor differences in electrical layout.
• Manitou 150 AET2 2004 Operators Manual – OEM Factory Specs – if you need fluid capacities and daily checks.
• K-D Manitou D 2876 LUE 2003 Repair Manual – OEM Factory Specs – covers the engine used in some 150 AET2 variants.

For broader transmission work, a Manual Transmission guide can supplement the driveline sections.

FAQ

Will this manual help me rebuild the hydraulic pump?

The manual covers removing the electric pump (70-2-45) and the rotation motors, but it does not include an internal pump rebuild guide. It gives you the steps to pull the pump and test pressure. For internal seal replacement, you’ll need a hydraulic shop manual.

What torque values are listed?

All fastener torques for the axle, wheel brakes, cylinder mounts, and hydraulic fittings are provided in ft-lb. For example, the wheel brake bolts torque is listed in section 70-2-46. The manual also includes tightening sequences for multi-bolt flanges.

Does it include wiring diagrams for the 150 AET2?

Yes. Section 80-7-M.71 and the sub-sections under 80-2 and 80-8 show component locations and harness routing. Full schematic diagrams are present in the electrical group.

Is this the same manual dealers use?

Yes. This is a direct facsimile of the original Manitou repair manual issued to dealer service departments in 2005. Identical content.

You can spend hours searching forums for a pressure spec or a bolt torque, or you can Download the Factory Manual and have it on your tablet in ten seconds. Every page counts. Every spec is verified. If you work on Manitou 150 AET2 machines, this is the only repair manual you need.