Description

Bobcat 553 2006 Service Manual

Getting a manual that looks like it was photocopied from a copy of a copy? Or worse, a generic PDF that tells you to “refer to the vehicle’s service manual” when that’s exactly what you’re trying to use? I’ve seen guys waste half a day chasing a hydraulic leak because the aftermarket torque table was off by 10 ft-lbs. This Bobcat 553 2006 Service Manual is the real deal – the same 409-page dealer copy the factory ships to shops. It starts with the serial number location (loader and engine – pages 1 cover that) and goes straight into the safety warnings you need to read before you stick your head under the cab. No fluff, noxa0reprints.

Page 3 lays out the warnings in bold. “Never service the Bobcat Skid‑Steer Loader without instructions.” That’s not a suggestion. That’s the factory telling you what can happen if you skip the lift arm support device or ignore the hydraulic line pressure warning. The manual covers the Bobcat Interlock Control System (BICS) which came standard on these 2006 models. If you’re working on a 553 with S/N 528011001 and above, this is the exact document you need.

Bobcat 553 2006 Service Manual: Scope and Coverage

From the engine lubrication system to the hydrostatic motor timing, this manual doesn’t skip anything. The table of contents lists every subsystem: Fuel System, Cooling System, Hydraulic/Hydrostatic System, Final Drive Chaincase, and even the Seat Bar Restraint System. Each section has its own removal and installation procedure, disassembly and assembly instructions, and a parts identification chart. You get the OEM torque specs right there – not a third‑party guess. For example, the wheel nut torque is clearly stated in the Tire Maintenance section, and the main relief valve adjustment is spelled out step‑by‑step.

Unlike the typical aftermarket book that gives you a generic diagram, this manual includes the actual hydraulic/hydrostatic schematics. You can trace the circuit from the pump to the lift cylinder and see exactly where the charge pressure bypass valve sits. That alone saves hours of head‑scratching on a loader that won’t lift.

Hydraulic System Troubleshooting with Schematics

The Hydraulic System chapter has its own troubleshooting chart – not a one‑page cheat sheet, but a proper diagnostic table. It covers low flow, high pressure, noise, and leak‑down issues. The main relief valve check procedure walks you through testing with and without auxiliaries. And the tilt lock valve removal – complete with disassembly and assembly steps – is something you won’t find in a generic “shop manual.” The manual also includes the load check valve and anti‑cavitation check valve repair procedures. If you’ve ever had a spool stick, the spool seal installation guide (with seal orientation) is worth the price of the manual alone.

Need to know the charge pressure for the hydrostatic pump? The manual tells you how to check it and what the spec should be. The oil cooler bypass valve and hydraulic oil temperature switch are both covered. No need to call the dealer hotline.

What Torque Values Does It Include?

Torque is everything on a skid‑steer. The manual lists torque values for every fastener in the hydraulic system – including the cylinder rod ends, the pump mounting bolts, and the port block fittings. The “Tighten Procedures” section inside Hydraulic System Information gives you the exact sequence. For the final drive chaincase, the oil filler plug torque is there. Even the pivot pin lubrication procedure specifies a torque for the grease fittings. You don’t have to guess or “snug it up” – the factory number is on the page. And it’s in Imperial units (ft‑lb), so your click‑type torque wrench is all you need.

3 Maintenance Procedures You Cannot Skip

First: the lift arm support device installation. Page 3 warns you, and the manual shows the exact procedure. If you’ve ever seen a lift arm drop because someone used a floor jack instead of the factory bracket, you know why this matters. Second: the seat bar inspection. The manual has a dedicated section describing how to check the seat bar restraint contacts and springs. Third: the hydraulic/hydrostatic filter replacement. The manual gives you the filtering spec and the o‑ring size so you don’t cross‑thread the housing. Skipping any of these three will cost you parts, time, or safety.

Seat Bar Restraint System Inspection

This is the kind of detail that separates an OEM manual from a reprint. The Seat Bar Restraint System chapter includes a description of how the BICS senses the operator’s position, then gives the inspection procedure (check for bent bars, worn bushings, switch continuity) and the maintenance steps (lubrication, switch adjustment). Most aftermarket manuals either skip this entirely or say “refer to the vehicle’s service manual.” Not this one. It’s right there with the part numbers, including the lift arm support device.

Engine work? The Engine Lubrication System section covers oil type, viscosity chart, and filter replacement. The cooling system cleaning procedure is detailed – start with cold engine, drain, flush with water, refill with the specified coolant. The fuel system section includes the fuel filter replacement and air bleeding steps. If you need to remove air after a filter change, the manual has the vent location and the priming pump stroke count. That kind of detail keeps you from cranking the starter until the battery dies.

For transmissions, if you need a basic refresher on how a Manual Transmission works, the manual assumes you know that already. But if you’re rebuilding the hydrostatic motor, don’t confuse it with a Manual Transmission. The hydrostatic motor disassembly on this 553 includes timing instructions – real alignment marks and shim thicknesses – not a generic “line up the dots.”

Related manuals you might also need: Bobcat 553 1998 Service Manual, Bobcat 553 2008 Service Manual, and Bobcat 553 2006 Service Manual (note: this is the same year but a different edition – verify your serial number).

Frequently Asked Questions

Is this manual the same as the one dealers use?

Yes. It is the official dealer copy, not for resale. It was printed in 2006 by Bobcat Company.

Does it cover the engine overhaul?

The manual does not include a full engine rebuild section (that would be in the engine service manual), but it covers all engine‑related maintenance that a shop would do in‑frame: lubrication system, cooling system, fuel system, air cleaner, and belt adjustments. For major internal engine work, you’ll need the separate engine manual. This manual is focused on the loader itself – hydraulics, hydrostatics, driveline, chassis, and electrical safety systems.

Don’t waste time with aftermarket copies that omit the safety instructions or give you vague torque numbers. Get the real factory document. You’re paying for accuracy and for knowing that every bolt is torqued to Bobcat’s spec. Access the Factory Manual now and keep it on your tablet next to the torque wrench.