Form No. 908007 strips the Gehl 1870 and RB1870 variable chamber round baler down to its last sprocket, roller and shear bolt across 62 pages, with each assembly drawn in exploded view and its part number keyed beside it. Your RB1870 parts catalog PDF follows the baler from drawbar to rear gate: pickup and crowder, roller drives, upper belts, lower rollers, gate hydraulics, the Total Density Control circuit and the twine tie mechanism each get their own illustrated breakdown. Options take a healthy share of the book, from the 1000 RPM conversion kit to the auto-electric twine tie, and alphabetical and numerical indexes let you trace a stamped number back to its assembly. Order the TDC relief valve at 300 PSI; the safety tow chain carries a 5 ton rating. A sheared part with no number stalls a baling day. The bookmarked, text-searchable file prints clean for the bench, so the pages can take grease while you get back to the windrow before rain.
What's Inside This Gehl 1870, RB1870 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 2 | Fastener Abbreviations |
| Decal Locations | 4-7 | Decal Application, Decal Kit, Paint Ordering, Safety Decals, Decal Placement |
| Frame & Fenders | 8-9 | Fender Assembly, Twine Box Brace, Frame Assembly, Gate Guide, Latch Assembly, Stationary Guard |
| Left Twine Box | 10 | Twine Box Cover, Twine Box Side, Twine Box Back, Twine Tensioner Plate |
| Right Twine Box | 11 | Twine Box Cover, Twine Box Back, Twine Box Side, Twine Tensioner Plate |
| Drawbar, Axles & Ramps | 12-13 | Axle Assembly, Wheel Hub, Wheel Bearing, Ramp Assembly, Hitch Assembly, Jack Assembly |
| Implement Driveline & Gearbox | 14 | Universal Joint, Transmission Assembly, Shear Bolt Kit, Transmission Guard |
| Pickup Lift & Overfill Clutch | 15 | Declutch Assembly, Stop Dog Spring, Lift Arm Assembly, Pickup Lift Bar |
| Pickup | 16-17 | Angle, Crowder Assembly, Sheave, Belt Idler, Arm Idler, Carrier Assembly |
| Bale Starter & Scraper | 18 | Bearing, Shaft, Roll, Spring, Link |
| Shuttle & Bale Size Indicator | 19 | Collar, Retainer, Bearing, Shuttle Assembly, Chain, Sprocket, Indicator, Cord |
| Roller Drives | 20-21 | Washer, Sprocket, Collar, Chain, Idler Bracket, Spring, Arm Idler, Shaft |
| Upper Belts, Rollers & Related Components | 22-23 | Collar, Retainer, Bearing, Guide, Rod, Roller, Shield, Belt Kit |
| Lower Rollers | 24-25 | Mount, Spring, Bushing, Bearing, Housing, Shield, Roller, Deflector |
| Gate Hydraulics | 26-27 | Washer, Pin Assembly, Cylinder, Lock, Elbow, Hose, Pivot, Clamp |
| Rear Gate | 28-29 | Spring, Counter, Bracket, Guide, Pin, Roller, Lift Rod, Collar |
| Total Density Control | 30-33 | Valve Tank, Relief Valve, Manifold, Trip Valve, Reservoir |
| Cross Frame & Twine Tie Mechanism | 34-35 | Trip Assembly, Cutoff Frame, Actuator, Twine Mounting Assembly, Pusher Bar |
| Transmissions | 36-37 | Gearbox Casting, Pinion, Shaft, Gear, Bearing, Seal |
| Universal Drives | 38-39 | Universal Joint, Spring Lock Assembly, CV Center Housing, Yoke, Center Cross |
| Hitchjacks | 40-41 | Jack Handle, Pin and Chain, Bearing Kit, Gear Kit, Support Plate |
| TDC Cylinder | 42 | Rod Assembly |
| Options & Accessories | 43-52 | Actuator, RPM Conversion Kit & Universal Drive, Manual-Electric Twine Tie Control Kit, Control Box, Auto-Electric Twine Tie, Crowder Wheel Kit, Stripper Assembly Kit |
| Sprocket & Roller Part Number Guide | 53 | |
| Standard Hardware Torque Specifications | 61-62 | Unified National Thread, Metric Course Thread, Grade 2, Grade 5, Grade 8 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Valve/Relief | 300 PSI | p. 29 |
| Safety Tow Chain capacity | 5 Ton | p. 52 |
Gehl 1870, RB1870 Common Problems This Manual Covers
Gehl 1870 and RB1870 baler upper belts worn, frayed, or slipping, and the belt lacing is pulling apart
Check the Upper Belts, Rollers & Related Components exploded view on page 22 and match your belt to the belt kit listed there. Order the belt lacing, belt guides, and roller bearings from the same parts list so the whole set goes back on together and you are back in the hay before the next rain.
Manual Section: Upper Belts, Rollers & Related Components p. 22Roller drive chain jumping teeth on worn, hooked sprockets at the upper drive roller
Check the Sprocket & Roller Part Number Guide on page 53 first, which lists parts for the upper drive, center drive, scraper, rewrap, and packing rollers. Then verify the chain, idler arm, idler spring, and collar part numbers in the Roller Drives diagram on page 20 so you replace the chain and sprockets as a matched set.
Manual Section: Roller Drives p. 20Twine arm not swinging out or twine cutoff not cutting at the end of the wrap
Check the Cross Frame & Twine Tie Mechanism exploded view on page 34 for the actuator, twine arm, primary shaft, pusher bar, trip assembly, and cutoff frame part numbers. If your baler runs an electric twine tie, verify the control box and actuator listings in Options & Accessories starting on page 43 before you order.
Manual Section: Cross Frame & Twine Tie Mechanism p. 34Pickup tines broken or bent and the pickup leaving hay in the windrow
Check the Pickup exploded view on page 16 for the tine, cam roller, and wind guard frame part numbers. Write down the cam roller number while you are there, because the same parts list covers both. Order spare tines ahead of the season so one rock strike does not cost you a dry hay day.
Manual Section: Pickup p. 16Wrong replacement shear bolt in the implement driveline at the gearbox keeps shearing off
Check the Implement Driveline & Gearbox diagram on page 14 for the shear bolt kit part number, and order the kit rather than a hardware store bolt of unknown grade. Verify the universal joint, safety shield, and jack shaft listings on the same page, and check the Standard Hardware Torque Specifications on page 61 when you tighten it.
Manual Section: Implement Driveline & Gearbox p. 14Total Density Control cylinder leaking oil at the rod and bales coming out soft
Check the TDC Cylinder breakdown on page 42 for the seal kit, rod assembly, piston, and cap anchor part numbers. Verify the manifold, trip valve, and hydraulic line listings in the Total Density Control diagram on page 30, and note the 300 PSI relief valve, part 127189, listed on page 29.
Manual Section: TDC Cylinder p. 42Frequently Asked Questions
What are the replacement specifications for the upper baler belt on a Gehl 1870, RB1870 round baler?
For the Upper Belt Kit (before SN15401), use part number 084722. This kit includes one 084723 belt and one 094104 pin. For belt repair, you can also use the 073390 Belt Lacing Kit or the 084384 Dutchman Kit. p. 23
How do I adjust the belt tension on the Gehl 1870 baler?
Belt tension adjustment is indicated by decal part number 060151, which is located in two places on the machine. Refer to the 'SAFETY' chapter of the Operator's Manual for specific information on safety decals. p. 4
What is the correct torque for a 1/2-13 Grade 5 bolt on the Gehl 1870, RB1870 round baler?
The dry torque specification for a 1/2-13 Grade 5 bolt is 75 ft-lb, and the lubed torque specification is 55 ft-lb. p. 61
What is the hydraulic cylinder capacity for the Total Density Control system on the Gehl 1870, RB1870 baler?
The hydraulic cylinder for the Total Density Control system (after SN15675) is a 3X25 cylinder, part number 127117. p. 31
What is the part number for the 1000 RPM conversion kit transmission on the Gehl 1870, RB1870 round baler?
The transmission for the 1000 RPM conversion kit (later style) is part number 141550. p. 44
How will I receive this Gehl 1870 Parts Catalog?
You get a 62-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this Gehl 1870 Parts Catalog?
Yes. Print the sections you need to take out to the shop for your own use. Standard letter or A4 paper works.
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