Description

PAT DS350 1999 Troubleshooting Manual for Grove TM9100 Boom Control Extension

If you’re chasing an LMI error on a Grove TM9100 and the console is flashing PAT DS350 1999 Troubleshooting Manual codes you don’t recognize, you don’t need guesswork — you need the sheet PAT sent with the system. I’ve seen guys spend half a shift swapping transducers because they thought “E61” meant a bad sensor. E61 is a bus extension error, and the fix is in the wiring, not the part. This is a 54-page factory troubleshooting manual, revision 031-300-190-048, dated 02/05/1999. It’s not a reprint and it’s not aftermarket interpretation. It’s the exact document PAT wrote for their DS350 Modular Boom Control Extension on the TM9100.

54 Pages of Factory Diagnostics

Every page here was written for a service tech holding a voltmeter. Section 1 walks you through seven specific fault scenarios — boom length percentage problems, boom out of sequence in automode, E18 front outrigger overload warning, and the dreaded no tele function at all in automode. Each scenario follows a flowchart that assumes you can measure voltage and current. The manual tells you what probe point to check and what the reading should be. Page 6 starts the boom length percentage problem. You need a digital voltmeter that can also read current — no exceptions. If you don’t own one, buy one before you open this manual.

Boom Length Percentage Problem – What the Manual Covers

Section 1.3 drills into the boom length percentage problem. The manual lists possible causes: a faulty length transducer LG 152, a damaged cable, or a bad connection in the boom control interface. It gives you the resistance values to check at the transducer pins and the voltage that should be present at the central unit under specific boom lengths. You don’t have to guess what “normal” is — the factory numbers are in the flowcharts. After you rule out the transducer, you move to the length angle transducer LWG 309. The reference drawings in Section 2 show you exactly where each component lives on the TM9100 boom. I’ve worked with aftermarket manuals that fudge these locations. This one doesn’t.

Electrical Schematics for Every Module

Section 2 contains 13 reference drawings, including electrical schematics for the central unit (page 45), bus extension (page 46), turntable (page 47), lower (page 48), and boom (page 49). Each schematic is the actual factory wiring diagram. If you’re tracing an E61 error in the bus extension, you go to page 27 for the flowchart and then to drawing 2.9 on page 46 to see every wire, connector, and pin number. The console data display pinout is on page 50. These aren’t generic diagrams — they match serial numbers that rolled off the line in 1999. For heavy equipment, that specificity is the difference between a one-hour fix and a full rebuild.

How This Manual Saves Your Billable Hours

You’ve got a crane waiting on the pad and the operator is watching over your shoulder. You don’t have time to cross-reference three different third-party PDFs. This manual gives you a single source for the entire boom control extension — LMI hardware, length transducers, proximity switch adjustment (drawing 2.1), and the boom control bus extension wiring. The troubleshooting section tells you what to check first, second, third. For “No tele function at all in automode” (page 30), the first check is the proximity switch at the base of the boom. If it’s misaligned by 1/8 inch, the control unit won’t see telecommand. The adjustment procedure is on page 38. That’s information you don’t get from a parts list.

Why You Need the OEM Source

Aftermarket troubleshooting manuals for the DS350 often skip the reference drawings or redraw the schematics from memory. I’ve seen reversed polarity labels that would fry a controller if you followed them. This manual is the original PAT document — same copyright notice, same proprietary language, same test procedures the factory trained techs on. Section 1.2 (Getting Started) lists prerequisites: knowledge of voltmeter use, operator’s handbook for the console, and regular service tools. It doesn’t assume you’re a crane engineer. It assumes you can follow a logical sequence. That’s a manual I trust on the bench. If you’re maintaining a fleet of Grove cranes with DS350 systems, you’ll also want the companion manual for the TMS/TTS 870 — see the related products below.

Frequently Asked Questions

Does this manual cover the Grove TM1000 or other crane models?

No. It’s written specifically for the Grove TM9100 with the PAT DS350 Modular Boom Control Extension. The electrical schematics and transducer locations are specific to that crane. Using it on a different model will give you wrong pinouts and trigger false error codes.

What tools do I need before starting?

A digital voltmeter that measures DC voltage and current. The manual assumes you know how to use it. You’ll also need the operator’s handbook for the console and standard hand tools for removing access panels.

Don’t waste shop time on a manual that guesses the part locations. Access the Factory Manual from AutoRepairManuals and get the OEM schematics PAT released for the DS350. Every wire, every transducer adjustment, every error code flowchart is right there in 54 pages. If you work on the TM9100, you need this on your tablet.

Related Manuals

• PAT DS350 Troubleshooting Manual
• PAT DS 105 1996 Troubleshooting Manual
• PAT DS350 Boom Control Extension Grove Crane TMS/TTS 870 Manual

For background on how load moment indicators compare to other control systems, see Manual Transmission. Unlike a mechanical linkage, the DS350 uses electronic sensors that require precise voltage checks — not guesswork. The same rigor applies when reading a Manual Transmission repair manual; you follow the specs or you scrap parts.