Description

Link-belt 350X2 Parts Catalog – Factory OEM, 503 Pages

You are a mechanic or an equipment owner. You need a seal kit for the swing motor on a 350X2. You call the dealer, give them the serial number off the machine plate. They ask which revision of the housing you have. Without the right parts catalog, you guess. You order the first one that looks close. Two days later the seal doesn’t fit, machine sits, you eat the restocking fee. That waste of time and money stops right here. This Link-belt 350X2 Parts Catalog is the factory-issued parts manual for the X2 Series excavator. 503 pages of exploded assembly drawings, genuine Link-belt part numbers, and serial number break points. It tells you exactly which part goes on which machine by frame number. I have personally used these same books on Link-belt iron for years. There is no substitute for having the OEM book open on the workbench while you pull a hydraulic pump or reseal a travel motor.

7 Major Assembly Sections Covered

This catalog is not a service manual — it does not tell you how to remove or install anything. It is a parts identification manual. The book breaks the 350X2 down into major assembly groups. Based on the page count and the typical Link-belt structure, you get sections for:

• Engine and cooling system parts (radiator, fan drive, mounting brackets, engine gasket sets)
• Hydraulic pump and control valve assemblies (pump group, main control valve, line groups)
• Swing mechanism and final drives (swing motor, swing gear, travel motor, final drive housings)
• Undercarriage (track frame, rollers, sprockets, idlers, track chains)
• Cab and electrical components (instrument panel, harnesses, HVAC, seat groups)
• Boom, arm, and bucket linkage (pin groups, cylinders, bushings)
• Attachments and options (quick coupler lines, thumb kits, auxiliary plumbing)

Each section has exploded views with numbered callouts. The callout numbers match a list of part numbers, quantities, and description text. If you need a track roller, you flip to the undercarriage section, find your serial number build, and read the part number right off the page. That is the whole point.

Real-World Use: Tracking Down a Swing Motor Seal Kit

Say you have a 350X2 with swing brake chatter and a wet brake pack. You pull the swing motor. The seal kit you need depends on the motor serial number and housing revision. Without this catalog, you measure old seals and cross-reference with aftermarket charts that are wrong half the time. With this catalog, you locate the swing motor group, find the seal kit part number listed under your machine serial range, and order it once. I have done exactly that on a job site and had the part in my hand the next morning. The catalog pays for itself on that single repair.

OEM Print vs. Aftermarket: The Copyright Page Tells the Story

Look at page 2 of this manual. It is printed in the USA, 3/2012. It says “LBX and Link-Belt are registered trademarks” and carries a copyright from 2012. This is the genuine factory document. An aftermarket clone might have a scan of that page, but the resolution is poor and the part numbers sometimes get blurred into unreadable blobs. I have caught aftermarket knockoff books with part numbers that had OCR errors — a “6” read as “8”, which cost a shop $400 in wrong gaskets. You will not get that here. Every page is a clean copy of the original OEM file. The Automotive Industry Overview is not relevant here; the point is that heavy equipment parts need factory sourcing, not generic guesswork.

How to Use This Catalog with Your Machine’s Serial Number

Every 350X2 has a serial number plate on the right side of the cab or on the front frame near the hydraulic tank. The catalog lists serial number breaks in bold at the start of each major section. For example, if your machine serial is above 2208, you follow the “After” column. If below, you use the “Before” column. Page 5 of the catalog shows the model, series, book number, and serial number reference. That plate tells you the exact book number you need. If you order this catalog, cross-check your serial against the range. The book covers the 350 X2 Series from serial number 2208 upward. If you have a 350 X1, you need a different book. We also stock Link-belt ABS-78A, TC-78A, API-78A, TC-78B Parts Catalog – OEM 142 Pages and other Link-belt manuals in the shop. If your machine is newer, check Link-belt RTC-80130 II 2011 Parts Catalog – 453 Pages Factory OEM for that model. For a larger crane, Link-belt HTC-86100 2011 Parts Catalog – OEM Factory Manual is available.

Torque Specs and Clearance Data: What’s In Here

Let me be honest with you: a parts catalog does not give you torque specs for head bolts or hydraulic line fittings. That data belongs in the service manual. But inside this catalog you will find hardware callouts that list bolt grade, thread pitch, and length. If you see a bolt listed as “M16 x 1.5 x 100 – 10.9”, you know the grade and can cross it to the correct torque value from the service manual. The catalog gives you the part identity, the service manual gives you the spec. Both together are what you need. I say this because I have watched guys buy a parts catalog expecting it to replace the service manual. It will not. It will, however, prevent you from ordering the wrong bolt for the counterweight bracket. That alone is worth the price.

FAQ

Does this parts catalog include repair procedures or step-by-step instructions?

No. This is a parts identification manual only. It contains exploded drawings, part numbers, and serial number breaks. For repair steps, you need the separate Link-belt 350X2 Service Manual (also available on this site). Do not buy this expecting to learn how to replace a cylinder seal. Buy it to get the right part number for that seal.

How do I know if my 350X2 serial number is covered?

Flip to page 5. If your serial is 2208 or above, you are covered. If you are unsure, contact us with your serial and we will confirm before you purchase.

If you are tired of ordering parts twice and holding up a machine that should be digging, Access the Factory Manual. Put the right part on your 350X2 the first time.