Description

Rexworks SP400 1982 Parts Catalog – Factory Specs for the Double Drum Vibratory Roller

I’ve lost count of the times a junior tech has called me over holding an aftermarket “reprint” that skips the critical torque sequence on a hub or misses a valve spring detail. That’s not going to happen with the Rexworks SP400 1982 Parts Catalog from AutoRepairManuals. This is the real OEM manual, Manual No. 500, published in 1982 for the Rexworks SP400 double drum vibratory roller. 73 pages of factory-indexed parts, exploded assemblies, and torque callouts that no third-party recompilation dares to replicate. You get the same sheets that Rexworks field techs pulled from a binder in the 80s. No markups, no guesswork.

Engine Assembly and Valve Torque – Page 5-6

The front frame section kicks off with the Engine Assembly listing, part number 602-09451-01. It’s on page 5 of the manual. If you’re rebuilding or replacing that engine, you’ll need the exact cap screw grades and washers. The manual calls out 5/8” hardened washers, cap screws of specific lengths (1-1/2”, 2-1/2”), and lock nuts. Every bolt pattern is tied to the vibratory roller’s chassis – not some generic engine stand spec. The valve assembly? It’s covered under the Vibrator Valve Assembly section on page 15. Good luck finding that level of detail in a scanned eBay “copy.”

Hydraulic Cylinder and Torque Hub: Critical Tolerances

Hydraulic Cylinder (part 102-02786-01) lives on page 8 with its mounting details and seal part numbers. The Torque Hub (pages 13-14, part 112-09345-01 or 112-08346-01) is where most field failures begin if you overtighten or use the wrong fastener. This manual gives you the exact hardware spec – not a vague “tighten securely.” You’ll see the lock washers, shim stacks (part 112-08342-01, page 4), and spacer part numbers. That’s the difference between a job that lasts and a hub that leaks in 50 hours.

Does This Parts Catalog Cover the Vibrator Valve? (Yes – and Here’s What You Get)

Vibrator Valve Assembly, part 102-31073-01, gets its own full page (15) with part numbers for every internal component. If you’re diagnosing a vibration-dropping issue on the SP400, you don’t want a generic “valve section” from a composite manual. This catalog shows you the valve block, spool, springs, and O-rings as Rexworks designed them. Pair it with the hydraulic schematic on pages 17-18 (effective serial numbers listed) and you can trace pressure drops without swapping parts blind.

73 Pages – What Each Section Delivers

Let’s talk page count: 73 pages. Every one of them is used. You get:
– Front Frame Assembly (pages 3-4) – part numbers for caps, spacers, shims, mounting hardware.
– Rear Frame Assembly (pages 9-10) – separate from front, so you don’t order the wrong cross member.
– Articulating Joint (page 7) – cross-connecting the two halves.
– Roll Assembly, Front (pages 11-12) and Rear (pages 13-14) – two distinct subsections because the driveline differs.
– Torque Hub (pages 13-14) – as mentioned.
– Vibrator Valve Assembly (page 15).
– Hydraulic Schematics (pages 17-20) – trace fluid paths for both traction and vibration drives.
– Pumps and Motors (pages 21-30).
– Disc Brake, Mechanical Caliper (page 31).
– Wiring Diagram (page 32) and Harness Assembly (pages 33-34).
– Spray Bar & Wiper Assembly (pages 35-36).
– Decals & Striping (pages 37-38).
– Numerical Parts Listing (pages 39-43) – cross-reference every part number in the book.
That’s real substance. Not a dozen pages of intro text and filler.

Why Factory OEM Documentation Beats Aftermarket Reprints

I’ve seen guys blow a $2,000 torque hub because they used a reprint that had the wrong shim count. Rexworks never licensed any aftermarket house to reprint this. The manual you get from AutoRepairManuals is a direct scan of the original 1982 binder, including the hand-drawn index and the note to read the Operator’s Manual 501 before start-up. No redrawn diagrams, no modern fonts that misalign part callouts. I’ll take that over any third-party PDF that claims “compatible with SP400.” If you want to trust your repair to a manual that doesn’t list the filler cap part (298-00362-47) on page 5, go ahead. I use the factory copy.

Frequently Asked Questions

Does this manual include torque specs for the cylinder head or main bearing cap?

This is a parts catalog, not a service manual. It lists part numbers and exploded views, not torque procedures. For assembly torque values, you’d need the separate Service Manual #500 (R 188). But every fastener is identified by size, grade, and quantity – which lets you look up the correct torque in an industry standard if you have to.

How are the pages organized – by section or by part number?

By section. Each subsystem (Engine, Front Frame, Hydraulic Cylinder, etc.) gets a dedicated page or two with an itemized parts list and a corresponding exploded diagram. Then a Numerical Parts Listing on pages 39-43 indexes everything by part number. You can work either way.

Look, I’ve been turning wrenches since carburetors were cutting edge. When I see a manual that lists the Radiator part 212-05103-92 and the Cap, Radiator 212-05111-92 on the same page as the engine mount spacers – that’s a sign it’s the real deal. If you’re maintaining or restoring a Rexworks SP400, get the document that doesn’t make you guess. Access the Factory Manual from AutoRepairManuals now.

Related Manuals:

• REXWORKS SP-848B Vibratory Roller Parts & Service Manual
• REXWORKS SP-600D Parts & Service Manual
• REXWORKS SP600D/SP600PD Parts & Service Manual

For broader context on the evolution of construction machinery documentation, see Automotive Industry Overview. Also check Automotive Industry Overview for supply chain insights.