This CAT torque specifications manual (SENR3130-10) is a 20-page reference document providing standard torque values for bolts, nuts, plugs, fittings, and hose clamps across all Caterpillar products. It is cataloged under the 3126B and 3126E engine group and serves as a universal fastener torque guide for technicians working on CAT equipment.
Official CAT torque specifications document details
| Brand | Caterpillar (CAT) |
| Model coverage | All Caterpillar products (filed under 3126B & 3126E) |
| System/Group | Torque Specifications — Manuals |
| Publication no. | SENR3130-10 |
| Year/Revision | July 2005 |
| Pages | 20 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- General Information (SMCS Code: 7553)
- Metric (ISO) Fasteners — Nuts, Bolts, and Taperlock Studs
- English (SAE) Fasteners — Nuts, Bolts, Taperlock Studs, and Machine Screws
- Ground Engaging Tool (G.E.T.) Fasteners
- Installation of Fittings
- Straight Thread O-Ring Fittings
- Plugs — Hex Drive, Socket Drive, Drain Plugs with Straight Threads, Mechanical Joint Tube Assemblies
- O-Ring Face Seal Fittings
- Bulkhead Nuts
- Flare Fittings
- Air Conditioning Fittings
- Air Brake Fittings
- Tapered Pipe Thread Fittings
- Miscellaneous Fittings — Hi Duty Tube Fittings, SAE Flareless Fittings, Flex Fittings
- Hose Clamps
Applicable truck models
SENR3130-10 is written as a universal CAT torque specifications reference applicable to all Caterpillar products. In the DiagTechPro library it is filed under the 3126B and 3126E engine family, but the torque tables inside cover metric ISO and English SAE fasteners, tapered pipe thread fittings, O-ring face seal connectors, air brake fittings, air conditioning fittings, and hose clamps used across the full Caterpillar equipment range, including Mitsubishi engines where tapered pipe thread values apply. The document distinguishes between ferrous and nonferrous port materials, instructing technicians to use 50 percent of listed values for nonferrous components. For official parts and service information, visit Caterpillar Support.
Who needs this CAT torque specifications manual
Mechanics, workshop owners, and fleet maintenance teams responsible for assembling or servicing Caterpillar engines and hydraulic systems need this document. It eliminates guesswork when tightening fasteners and fittings, helping prevent failures caused by over-torquing or under-torquing — including split nuts, expanded ferrules, and improper sealing — as described in the manual’s warnings.
The full PDF of SENR3130-10 is available in the DiagTechPro manuals library. A free account is required to download.
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