TM1945 John Deere 655C, 755C; Liebherr 622, 632 Crawler Loaders Pdf Repair Service Technical Manual

John Deere 655C, 755C & Liebherr 622, 632 Crawler Loaders Repair Service Technical Manual (TM1945)

The John Deere 655C and 755C are unique machines in the Deere lineup, born from a partnership with hydrostatic pioneer Liebherr (Models 622 and 632). Because of this lineage, these crawler loaders do not share the same engineering DNA as standard Deere dozers. They utilize Liebherr’s advanced travel drive systems and often distinct engine configurations. The Repair Service Technical Manual (TM1945) is the only document that bridges this gap. It provides the specific, factory-authorized procedures for servicing these hybrid engineering marvels, covering both the John Deere badged units and their Liebherr counterparts.

This manual is critical because generic "John Deere" knowledge often fails when applied to the Liebherr-designed hydrostatic travel drive. TM1945 dives deep into the split-flow hydraulic architecture, the unique final drive planetary reduction, and the specialized undercarriage components. Whether you are troubleshooting a 632 with weak tracking or rebuilding the boom cylinders on a 755C, this manual provides the cross-referenced part data, torque values, and lifting procedures necessary to perform dealership-level repairs on these specific models.

TM1945 Manual Specifications

• John Deere Models: 655C, 755C
• Liebherr Models: 622, 632
• Manual ID: TM1945
• Manual Class: Service Repair Technical Manual (Mechanical)
• Core Systems: Liebherr Hydrostatic Drive, Engine, Undercarriage
• Primary Focus: Disassembly, Component Rebuild, Installation
• Format: Digital PDF (Searchable, Printable)
• Language: English

Specialized Repair Coverage

Liebherr Hydrostatic Travel Drive

The heart of these machines is the Liebherr travel system. This manual covers the complete removal and bench repair of the variable displacement travel pumps and motors. Unlike standard systems, these units require specific shimming and setup procedures to handle the "inch-brake" pedal function correctly. TM1945 details the mechanical zeroing of the swashplate and the replacement of the high-pressure shaft seals, ensuring the loader retains its trademark agility.

Undercarriage & Track Tensioning

The 655C/622 series utilizes a robust track frame designed for shock loading. This manual guides you through the servicing of the track tensioning cylinders (grease adjusters) and the replacement of the sprocket segments. It details the safe procedure for splitting the track chain and removing the front idler assembly. Crucially, it provides the wear limits for the bottom rollers, allowing you to decide between a reseal or a full replacement.

Loader Boom & Z-Bar Linkage

Digging into a pile requires immense breakout force. TM1945 covers the refurbishment of the loader lift arms and Z-bar linkage. It provides the procedure for pressing out the hardened bucket pins and replacing the bushings. Additionally, it offers exploded views for resealing the hoist and tilt cylinders, including the specific torque requirements for the piston nuts—a critical safety step when lifting heavy loads.

Who Needs This Manual?

• Specialized Mechanics: Working on the unique Deere-Liebherr crossover machines.
• Liebherr Equipment Owners: Maintaining 622/632 loaders without easy dealer access.
• Hydraulic Shops: Rebuilding the specific travel motors found in these units.
• Construction Fleets: Managing mixed fleets of 655C and 755C loaders.

Why Source from Manualsmarket.com?

At Manualsmarket.com, we understand the confusion that comes with re-badged equipment. We supply the authentic John Deere/Liebherr Repair Manual (TM1945) so you don't waste time looking for a Deere engine manual when you might be staring at a Liebherr block. Our manual covers the specific engineering reality of these machines. When you download from us, you get the verified data needed to fix the machine sitting in your bay, regardless of the paint color.

Need to troubleshoot electrical codes or calibrate the joystick? You'll need the Operation & Test Manual, also available in our John Deere Equipments Collection.

TM1945 FAQ

Does this manual cover the Liebherr engine?

Yes. Since many of these units (especially Series I) utilized Liebherr engines, this manual covers the engine removal and external service specific to that configuration.

Is the diagnostic software included?

No. Fault codes and electrical testing are in the separate Operation and Test Manual. This book is for mechanical disassembly and repair.

Does it cover the 755C Series II?

No. The Series II machines (TM2313) utilize different electronics and updated Deere engines. This manual (TM1945) is for the original 655C/755C and Liebherr 622/632.

Does it show how to repair the joystick controls?

Yes. It covers the mechanical disassembly and repair of the pilot control valves and joystick linkage in the cab.