Description

Bobcat 325, 328 2007 Service Manual

You’ve got a Bobcat 325, 328 2007 Service Manual on the screen. Before you start that hydraulic pump tear-down, understand this: the 816-page factory document is the difference between a job that stays sealed and one that leaks all afternoon. The aftermarket stuff copies the pictures but guesses the torque values. This manual? It’s the original dealer copy from Bobcat Company – printed in 2007, includes the exact serial number breaks for the 325 (S/N 234111001 & Above) and the 328 (S/N 234211001 & Above). No reprint, no third-party interpretation.

Safety Instructions and Fire Prevention

The manual opens with a section you better not skip. Safety Instructions includes a dedicated Fire Prevention page. Read it. The warning paragraphs tell you: never service the machine without instructions, stop the engine and let it cool before checking fluids, keep the tailgate closed except for service. The manual also covers the upperstructure slew lock operation for early and later models. If you’re lifting or blocking the excavator, the procedure is spelled out step by step – including how to use the correct lift points and cribbing. That’s page 26 stuff, but you need the whole context.

Hydraulic System: 7 Sections of Factory Data

The Hydraulic System chapter alone runs multiple sub-sections: hydraulic/hydrostatic schematics, a glossary of symbols, troubleshooting charts for the cylinder circuit, swing circuit, and travel circuit. Then you get into individual component procedures – Boom Cylinder testing, removal, disassembly, and assembly with parts identification. Same for Arm Cylinder, Bucket Cylinder, Blade Cylinder, and Boom Swing Cylinder. The main relief valves, port relief valves, crossport relief valves, and the pressure reducing valve each have their own testing and adjusting procedures. The hydraulic control valve section disassembles every valve section – right travel, left travel, boom swing, boom, arm, bucket, auxiliary, boost, blade, and slew. If you’re working on a Bobcat excavator hydraulic system, this manual hands you the factory sequence and the OEM torque specs you can’t find anywhere else.

Does It Cover Both the 325 and 328 Models?

Yes, and the serial number ranges are right in the title: 325 – S/N 234111001 & Above, 328 – S/N 234211001 & Above (G Series). The manual includes serial number locations for both the excavator and the engine. So if you have a 2007 325 or 328, this is the document that matches your machine. Don’t use a later edition that might have changed specs – stick with the factory 2007 version for accuracy.

Engine Lubrication System and Accessory Drive Belt

The Engine section covers the lubrication system completely: checking oil level, the oil chart with viscosity grades, and the replacement procedure for oil and filter. The spark arrestor muffler section is included, along with the engine accessory drive belt – belt tension check and belt adjustment. No guesswork. The manual gives you the inspection intervals and the exact adjustment method. If you’re replacing the belt, you get the tension spec, not a “tight enough” measurement.

Real-World Use Case: Lifting and Blocking the Excavator

When you’re swapping a track motor or replacing the travel motor oil, you have to lift and block the machine safely. The manual dedicates a full section to Lifting and Blocking the Excavator with a step-by-step procedure. It also covers transporting the excavator, including tailgate adjustment and latch adjustment. The operator cab section details the emergency exit, front window, right side windows, and cab door. If you’re doing any undercarriage work, read that section first. Twenty minutes of study saves a trip to the ER.

Source Validity: OEM Factory Print vs Aftermarket

This manual is the real factory document – you can see the original page numbering (1 of 816) and the statement “Printed in U.S.A. – Bobcat Company 2007.” The OCR reads “Dealer Copy — Not for Resale.” That’s the OEM source. Aftermarket manuals often mix up the hydraulic symbols or omit the port relief valve adjustment spec. This one has the full glossary of hydraulic/hydrostatic symbols for excavators. If you’re serious about reliability, you use the factory print. Don’t waste time with a copy that dropped the crossport relief valve section.

Frequently Asked Questions

Does this manual cover the 2008 model?

No. This is strictly the 2007 edition. For the 2008 model, see the related manual below.

What torque specs are included?

The manual includes factory torque values for cylinder mounting bolts, hydraulic pump couplers, main and port relief valves, travel motor components, and engine accessory drive belt tension. Every torque adjustment in the Hydraulic Pump section, Control Valve assembly, and Engine Lubrication section comes from the OEM spec. You won’t find these numbers in a generic repair guide – they’re specific to the 325/328 G Series.

Is the wiring diagram included?

This manual focuses on hydraulic and mechanical systems. It includes hydraulic/hydrostatic schematics and a glossary of symbols, but does not contain electrical wiring diagrams. If you need electrical diagnostics, look for the separate Bobcat Electrical Service Manual for these models.

Can I use this manual for a 328 with a different serial number?

Only if your 328 falls within the serial number range specified: S/N 234211001 & Above. Earlier serial numbers may have different hydraulic pump configurations or control valve designs. Cross-check your machine’s serial plate before you start.

Related manuals: Bobcat 325 328 331 2006 Service Manual covers the previous year with the 331 model. For the following year, Bobcat 325 328 2008 Service Manual is available. If you need the older generation, Bobcat 325 328 1998 Service Manual. This manual does not cover Manual Transmission – that’s a different document. For general information on the type of transmission found in earlier equipment, see Manual Transmission.

If you’re tearing into a Bobcat 325 or 328, don’t waste billable hours chasing aftermarket errors. Access the Factory Manual and get the original OEM data on your screen.