Description

GEHL 329, HD329 Parts Catalog

If you’re waist-deep in a 329 or HD329 spreader with a broken auger drive and you can’t read the part number off the old component, you know the frustration. That’s when you need the factory parts breakdown, not a reprint that swapped a bolt grade or left out a seal dimension. GEHL 329, HD329 Parts Catalog is 34 pages of OEM-sourced diagrams and part numbers, organized by assembly and serial number range. No guesswork, no third-party interpretation.

Decal Locations and Auger Drive – First Things First

The manual opens with decal placement on pages 2–3 so you can verify your machine matches the reference layout. Then it jumps straight into the auger drive group on pages 4–5. If you need the auger itself, that’s on page 20 in the Components section. Every fastener callout uses GEHL’s own abbreviation list from page 2 – that’s the difference between ordering a Grade 5 Cap Screw and a Grade 8 that won’t fit the torque spec.

Hydraulics Section: Two Serial Number Ranges

GEHL split the hydraulics into two groups because of a design change. For MS329 after SN4320 and HD329 after SN8599, the hydraulic page spread is 10–11. For machines before those serial numbers, it’s page 12. If you order a hose or cylinder from the wrong page, you’ll get the wrong port angle. The GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog shows similar hydraulics splits – always check the serial number break.

Why a Parts Catalog Beats a Service Manual for Ordering

A service manual tells you how to take something apart. A parts catalog tells you exactly what to order to put it back together. This one covers the expeller and expeller drive on pages 6–7, the discharge gate and pan on page 8, and the gearbox on page 9. Each page has an exploded view with reference numbers that tie directly to the Numerical Index on pages 27–29. That index gives you the factory part number, not a generic cross-reference. I’ve seen aftermarket catalogs swap a Carriage Bolt for a Cap Screw because they look similar in a photo. That gets you a stripped hole and a phone call to the customer. Don’t learn that the hard way.

MS329 vs HD329 – Tandem Axles and Wheels

The manual splits the tandem axle pages: page 14 is for the MS329, page 15 for the HD329. The wheel sets and tire size callouts are different because the HD329 carries heavier loads. Page 26 covers splash guards and side rails – again, model-specific. The GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs uses a similar model-based page split. Keep your model number and serial number handy when you order.

3 Reasons to Use the Factory Standard Hardware Torque Table

The inside back cover lists standard attaching hardware torque values for Grade 5 and Grade B nuts. Here’s why you care:
1. The table shows the correct torque for a 5/8″ Grade 5 Cap Screw – 220 ft-lb. An aftermarket table might quote a generic number that’s off by 20%.
2. It tells you which fastener grade the factory used originally. The manual states: “Unless otherwise specified, all Cap Screws or Bolts are Grade 5, cadmium or zinc plated; Hexagon Nuts for Grade 5 Screws or Bolts are Grade B.” That sentence alone prevents fastener mix-ups.
3. The torque values apply to the hardware listed on every parts page in the catalog. No need to cross-reference another source. If you want to understand more about engine fasteners in general, this Wikipedia article on diesel engines explains the standard grades, but for GEHL-specific work, use the factory table.

Is This Manual Enough for Complete Reassembly?

No. This is a parts catalog, not a service manual. You need the separate operation and maintenance manual (Form# 904850) for disassembly procedures and adjustments. But when you’re standing at the parts counter, this 34-page document is the only thing that keeps you from ordering the wrong expeller bearing. The GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual follows the same serial-number-split structure. If you work on multiple GEHL machines, having the factory parts breakdowns side by side saves hours of cross-referencing.

Source Validity – OEM Print, Not a Copy

This is the original GEHL Form No. 907501, printed by GEHL Agriculture. It replaces the service parts chapter (Chapter 16) of the older operator’s manual. Page 2 includes a note: “GEHL Company reserves the right to make changes or improvements… without incurring the obligation to install such changes on any previously delivered units.” That same note is missing from aftermarket reprints. If you buy a copy, you don’t get that legal and technical context. You also don’t get the correct abbreviation table for fasteners – aftermarket versions often modernize the terms and swap FHMS for a generic socket head callout. Stick with the original.

Does this catalog cover the HD329 Industrial Waste Spreader?

Yes. The manual explicitly says it includes service parts for the HD329. Both the 329 and HD329 are covered.

How many pages does the Parts Catalog have?

34 pages, plus the inside front and back covers. The numerical index runs from page 27 to 29, and standard hardware torque specs are on the inside back cover.

Are the hydraulic cylinder part numbers the same for all serial numbers?

No. The hydraulics section splits at MS329–SN4320 and HD329–SN8599. Cylinder groups differ slightly. Page 21 lists hydraulic cylinders for both serial ranges, but you must check the column header. If you order from the wrong group, you might get a cylinder with the wrong port orientation. The factory parts list shows the exact GEHL part number for each serial break.

Can I use this catalog to find the torque specification for the gearbox bolts?

Yes and no. The inside back cover gives standard hardware torque values for cap screws and nuts used throughout the machine. For the gearbox specifically, the catalog doesn’t list a separate torque; use the standard grade 5 torque for the bolt size. If the gearbox requires a special torque, that would be in the service manual (Form# 904850). The parts catalog is for ordering parts, not for assembly torque values beyond the standard table.

If you’re tired of guessing which part goes where, get the document that the GEHL factory builds the spreader from. Access the Factory Manual at AutoRepairManuals and have the exact part numbers and torque specs on your bench in minutes.

Related manuals you might need:
• GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog
• GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs
• GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual

For a broader look at engine fundamentals, see this Wikipedia article on diesel engines.