Part numbers for the Gehl 1639 gas and 1649 diesel self propelled pavers are settled in this 86-page catalog, OEM ID 907888, from the screed assembly and backwall groups through the lower frame, hopper and positive drive track. Exploded views in this Gehl 1639 parts catalog PDF trace every plumbing run, from reservoir and manifold to screed, augers, gates and hopper, and break down the cylinders, pump sections, track drive torque hub and 7-stack control valve. Separate wire harness hookup pages show each model's engine group connections. A numerical index cross-references any part number back to its group. Relief valve P700546 is listed at 3500 PSI. When your job is replacing that relief valve in the pump group, the 3500 PSI rating is the figure you match on the new part. Bookmarks reach each group and the text searches by part number, so your order for a hopper lift cylinder or steer valve matches the catalog's own figures.
What's Inside This Gehl 1639, 1649 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| General Section | 1-9 | Introduction, Table of Contents, Decal Locations (Lower Frame, Hopper & Screed, Backwall) |
| Chassis Section | 10-35 | Screed Assembly Group, Left Side Backwall Group, Right Side Backwall Group, Gas Engine Group, Diesel Engine Group, Wire Harness Hookup, Lower Frame and Hopper Group |
| Reservoir, Manifold, and Drive Tracks Plumbing | 36-39 | Reservoir, Manifold, Drive Tracks, Test Ports, Cooler |
| Screed and Auger Plumbing | 40-43 | Screed Plumbing, Lift Cylinder, Extend Cylinder, Vibrator Motor, Auger Plumbing |
| Gates and Hopper Plumbing | 44-47 | Gate Plumbing, Shutoff Valves, Hopper Plumbing, Hopper Lift Cylinder |
| Cylinder Assemblies | 48-59 | Screed Extend Cylinder, Screed Lift Cylinder, Side Gate Cylinder, Hopper Lift Cylinder, Track Adjust Cylinder, Gate Cylinder |
| Hydraulic Pumps and Motors | 60-71 | Front Piston Pump, Rear Gear Pump, Track Drive Motor, Auger Drive Motor, Screed Vibrator Motor |
| Control Valves and Steering | 72-80 | Track Drive Control Valve, 7-Stack Control Valve, Augers Control Valve, Steer Valve, Relief Valve |
| Miscellaneous Section | 81-86 | Numerical Index, Hardware Torque Specs |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Relief Valve Pressure | 3500 PSI | p. 61 |
Gehl 1639, 1649 Common Problems This Manual Covers
Gehl PowerBox 1639/1649 screed lift cylinder part number missing from screed assembly parts list
Read the part number stamped on the cylinder tube before ordering. The screed assembly list on page 11 shows the screed lift cylinder (ref 10) and screed extension cylinders (ref 03) with notes a and b in place of a part number. Then open the Cylinder Assemblies section starting on page 48 for the full cylinder breakdown.
Manual Section: Screed Assembly Group p. 11Screed adjust handle bearing listed under two different part numbers in the screed weldment parts list
Check the serial plate before ordering. Page 13 lists bearings P024200 and P471567 with serial footnotes: note a covers 1639 thru S/N 19004 and 1649 thru S/N 18040; note b covers 1639 S/N 19005 and up and 1649 S/N 18041 and up. Match your serial to the footnote letter printed beside the reference number, then order.
Manual Section: Screed Assembly Group p. 13Replacement battery and cables needed, can't find part numbers in the left side backwall
Check the Left Side Backwall Group parts list on page 17. Order battery P471740, positive cable P471738 and negative cable to frame P471739. If the hold down is bent or rusted, add hold down angle P471741, the two 5/16 dia. rods P470348 and the serrated flange nuts L50056 listed under ref 07.
Manual Section: Left Side Backwall Group p. 17Gas engine air cleaner element and dust cup part numbers needed for filter service
Check the Gas Engine Group list on page 23; it covers the 1639 only. Order element P700504 alone if the housing is sound, or the complete air cleaner assembly P700517, which includes refs 2 through 5. Dust cup P700544, clamp ring P700543 and rubber vacuator P700547 are listed separately, and the engine oil filter is P221050.
Manual Section: Gas Engine Group (1639) p. 23Hydraulic relief valve replacement part number and pressure rating needed for the pump assembly
Check the Hydraulic Pump and Motor Assemblies breakdown on page 61. The relief valve there is ref 25, part P700546, rated 3500 PSI. Order by part number, not description: the Left Side Backwall Group on page 17 lists a different relief valve, P471535, at the manifold, so confirm which location you are replacing first.
Manual Section: Hydraulic Pump and Motor Assemblies p. 61Repainted paver missing safety decals, need the complete decal kit part number and paint
Verify your model, then order the complete decal kit from page 5: P700528 for the 1639 or P700529 for the 1649. The manual cautions that damaged, unreadable or painted-over decals must be replaced and affixed in their proper locations (page 5). Individual decals such as WARNING Pinch Point L65927 are listed on page 7. Paint: 906213 yellow, 906317 charcoal grey (one gallon).
Manual Section: General Information and Decal Application p. 5Frequently Asked Questions
What is the part number for the BURNER HOLDER TUBE in this manual?
Page 11 lists part number P470157 for the BURNER HOLDER TUBE. p. 11
What is the part number for the STRIKE-OFF PLATE in this manual?
Page 13 lists part number P470051 for the STRIKE-OFF PLATE. p. 13
What is the part number for the MOUNT BAR in this manual?
Page 15 lists part number P471428 for the MOUNT BAR. p. 15
What is the part number for the CHOKE CABLE in this manual?
Page 17 lists part number P470860 for the CHOKE CABLE. p. 17
What is the part number for the HORN in this manual?
Page 19 lists part number L41847 for the HORN. p. 19
Do I get instant access to this Gehl 1639 Parts Catalog?
A single searchable PDF file of 86 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Can I print specific sections of this Gehl 1639 Parts Catalog?
Yes. Print individual pages or full chapters for your own shop use, on letter or A4 paper.
