Komatsu Dresser GD530A GD650A GD670A 1996 Workshop Manual – Factory Specs

Description

Look, I’ve been turning wrenches for 28 years. If you’re working on a Komatsu Dresser grader and you’re using a third-party manual, you’re wasting time. This Komatsu Dresser GD530A, GD650A, GD670A, GD530AW, GD650AW 1996 Workshop Manual is the real thing – 1053 pages of factory documentation. No aftermarket shortcuts. The TOC alone lists over 30 major sections, starting with the articulation joint (A-01.50K) and running all the way through general torque values. You need the exact clutch pressure setting for the FUNK 2263E130B transmission? It’s in section C-11.40K R1. You need the Rexroth all-wheel drive pump breakdown? Section E-01.15K. Every spec came from the Komatsu Dresser engineers, not some kid in a basement.

Transmission Power Shift (FUNK 2263E130B): What You Get

Section C-11.40K R1 is the heart of this manual for anyone rebuilding the transmission. It covers special tools you’ll need – channel support tool, clutch pack removal tool, clutch spring compression tool. Then it walks you through operation, recommended lubricant intervals, voltage requirements, and pressure/flow checks. The disassembly is broken down by serial number ranges: torque converter for S/N 200417 thru 202050 and for S/N 202051 and up. Then clutch packs in three stages, control valve, front cover, main case. Reassembly follows the same order. If you skip the “Setting the Clutch Pressure” step, you’ll cook the packs in 50 hours. Page 1 lists the engine models: GD530A, AW series use KDC61 OT / S6D102-1 / S6D102E-1; the GD650A and GD670A use KDC614T / S6D114-1 / S6D114E-1.

Does This Manual Cover the Entire Machine?

Yes. The contents page (page 2) shows coverage from articulation joint assembly (A-01.50K) through wiring diagrams (N-01.35K R1), pre-delivery procedures (X-01.00K), suspension seat (Y-01.00K), and general torque values (Y-02.00K). That means you get the Char-Lynn Orbitrol unit, the Eaton steering and brake pump (model 70422 RDU), the Husco control valve manifolds (5000C series), the Vickers hydraulic motor for all-wheel drive, the four-way hydraulic oil swivel block, the circle reverse motor from either Danfoss or Char-Lynn, the tandem case with single/double strand chains, the JD TeamMate II final drive with NoSPIN and lock/unlock differential, and the Rexroth brake valve. You’re not guessing on any of these systems.

1053 Pages of Factory Specs – No Aftermarket Guesswork

Every page came from the original Komatsu Dresser print. The section on the steering and brake pump (E-04.60K) includes special torques, pressures, and a start-up procedure that you won’t find in any generic hydraulic pump manual. The all-wheel drive pump (E-01.15K) has diagnostic port locations and troubleshooting tables. The circle reverse slip clutch (F-01.20K R1) and gear case (F-01.30K) give you the exact clearances. When you’re torquing a bolt on that articulation joint, you can trust the number in this book because it came from the same engineers who designed the joint. That’s why I say skip the aftermarket PDFs – they copy from copies and the numbers drift. This is the original.

Articulation Joint and Steering Systems: Factory Procedure

Section A-01.50K walks you through removal, disassembly, cleaning and inspection, reassembly, and installation of the articulation joint. The Char-Lynn Orbitrol unit (A-10.40K) follows the same sequence. If you’ve ever had a grader wander because the orbitrol slop wasn’t set correctly, you know how critical those internal clearances are. The manual tells you exactly what to look for during cleaning and inspection – wear limits that the factory established. No one else has that data.

Get the Right Torque Data for Brake Pumps

The parking brake caliper sections (K-04.20K R1 for Perrot, K-04.30K for Mico) include torque values that vary by bolt location. The brake valve sections (K-11.10K R2 for Rexroth, K-11.30K R1 for Mico) give you the pressure settings and adjustment procedures. If you mix up a torque spec on a caliper mounting bolt, you’re looking at a brake failure on a machine that weighs 30,000 lb. The manual eliminates that risk.

For the engine side, you’ll want the companion Komatsu Dresser KDC 614 1991 Repair Manual and the Komatsu Dresser 614 1991 Engine Specification Manual to go with this chassis manual. The operation and maintenance manual Komatsu Dresser GD530A/650A/670A Operation & Maintenance Manual covers daily checks and fluid specs. But for the actual rebuild work, this workshop manual is the foundation. If you’re dealing with any Manual Transmission work on other equipment, you know the difference between a factory manual and a reprint. This is the real factory print. The same logic applies to Manual Transmission documentation – you need the OEM source.

So stop wasting billable hours on guesswork. Access the Factory Manual and get back to turning wrenches with the right numbers.

Frequently Asked Questions

Is this the same manual the dealer uses?

Yes. This is the original Komatsu Dresser workshop manual issued in 1996. Dealers used these same pages for service and warranty work.

Does it cover the GD530AW and GD650AW models?

Yes. The manual covers all six models: GD530A, GD530AW, GD650A, GD650AW, GD670A, and GD670AW.

How are the torque specifications presented?

Each component section has its own torque table. For example, the steering and brake pump section (E-04.60K) lists special torques specific to that pump. General torque values are at the end of the manual under Y-02.00K.

What if I need help with the transmission rebuild?

Section C-11.40K R1 contains over 100 pages on the FUNK 2263E130B transmission, including special tool specs, clutch pressure settings, and disassembly/reassembly sequences by serial number range.