Description

GEHL 99 Parts Catalog

Been there. Staring at a basket case forage blower with half the hardware missing, and the parts guy on the phone needs a number you don’t have. That’s the moment you realize the GEHL 99 Parts Catalog isn’t optional — it’s the difference between a Saturday afternoon finished and a week waiting on the wrong bolt. This is the factory book, 28 pages, direct from GEHL’s print run. No reprints, no aftermarket interpretation.

Decal Locations and Serial Number Decoding

Right on page 2-3, the manual shows exactly where the model and serial number decal lives — under the right Quick-switch Yoke on the main frame. That decal is your key to ordering the correct parts. Without it, you’re guessing. GEHL stamps the information there for a reason. Use it before you pick up the phone.

Main Frame & Blower – Exploded View on Page 4-5

The main frame and blower assembly are laid out with every cap screw, bearing, and pulley called out. Note that common hardware (nuts, washers, cap screws) is listed in the parts list but not illustrated. The manual tells you straight: hardware listed is for mounting purposes only and is not included when ordering the part for replacement. For part numbers of common hardware, you go to the attaching hardware table inside the back cover. Don’t skip that step.

Hopper & Rotor: Matching Part Numbers to Your Unit

Pages 6-7 cover the hopper and rotor. This is where wear items live — the rotor itself, the blower paddles, and the hopper sheet metal. The manual uses abbreviations like HHCS (Hexagon Head Cap Screw) and LW (Lock Washer) consistently, so get familiar with them. It’s not complicated, but it is precise. If you order a part without matching the number, you’ll get something that won’t fit. I’ve seen it happen.

Options and Drive Line Configurations – A Closer Look at Pages 12-16

Six pages cover the drive line options: 540 RPM normal duty, 540 RPM heavy duty, and two 1000 RPM telescoping drives for different spline shafts. The 540 RPM Normal Duty 35 Series Telescoping Drive is on page 12; the Heavy Duty variant on page 13. If your unit takes a 1-3/4-20 spline shaft, you need page 15. There’s also a 1000 RPM conversion package on page 16. The manual lists every part number for each configuration — driveshaft sections, yokes, safety shields, everything. Do not mix up the duty ratings. Heavy duty components are thicker and the torque capacity is higher. Using the wrong one under load is a failure waiting to happen.

Torque Specifications – Inside Back Cover

Standard hardware torques are in a chart at the end of the manual. Unless otherwise specified, all cap screws are Grade 5, cadmium or zinc plated; hex nuts for Grade 5 are Grade B; others are Grade A. That chart is not a suggestion. On a forage blower, loose bolts lead to vibration, then to broken castings, then to parts that cost more than this catalog. Tighten to spec. Get a torque wrench.

Why Factory OEM Documentation Beats Aftermarket

Aftermarket parts catalogs often re-draw exploded views, drop part numbers, or use generic hardware references. This GEHL 99 Parts Catalog is the original factory print. The abbreviations match the OEM service manuals. The hardware table is exactly what GEHL used on the assembly line. If you’ve ever tried to match a non-standard bolt with a generic listing, you know the headache. This book kills that headache. For related equipment, check the GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog or the GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs. For a newer machine, the GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual may apply. External references like this Wikipedia article on diesel engines cover the tractor power source, but the blower itself is all mechanical drive.

Parts Index and Ordering – What the Manual Expects

The Numerical Index on pages 20-21 lists every part number in the book in ascending order. Use it to cross-reference when you have a part in hand but don’t know where it goes. The manual also includes a note on original tire replacement: GEHL policy prohibits selling replacement tires for original machinery, so replacement wheel sets are listed with tire size info to help you buy locally. That kind of transparency is rare in aftermarket books.

Does this manual include part numbers for aftermarket hardware?

No. Common hardware (nuts, cap screws, washers) is referenced by size and grade only — you match those from the attaching hardware table inside the back cover. Aftermarket equivalents are your responsibility.

Where is the serial number located on my GEHL 99?

On a decal on the Main Frame below the right Quick-switch Yoke, as shown on page 2-3. That decal is critical for correct parts ordering.

28 pages of factory data, exploded layouts, and torque charts that save you guessing. You can order the right part on the first call. Access the Factory Manual now.