Description

Perkins Engines 3.152, 3.1522, T3.1524, D3.152M, 3HD46 1991 Workshop Manual

You’ve got a Perkins Engines 3.152, 3.1522, T3.1524, D3.152M, 3HD46 1991 Workshop Manual on the bench and the aftermarket book says ‘tighten to spec’ without telling you which spec. That’s how head gaskets blow. This 1991 Workshop Manual from Perkins Engines Limited is the same book the factory techs used. 128 pages, direct from Peterborough. No fluff, no shortcuts. Just the sequence.

Cylinder Head Overhaul: Factory Procedure from Section F

Section F covers the cylinder head removal, valve spring compression, and the correct order to tighten those head bolts. If you skip the sequence, you’ll warp the head. The manual spells out the tightening stages and the final torque value in lb-ft. [DATA NEEDED] for exact value, but the step-by-step is there. Every bolt has a spec. Every angle is noted. That matters when you’re putting a 3.1522 back together.

What Torque Values Are Listed in the Technical Data?

Section C – Technical Data – lists all critical torque values for the engine. Main bearing cap bolts, connecting rod nuts, flywheel bolts. You need those numbers, not guesswork. The manual also includes the correct tightening angles where required. For a T3.1524 with a turbo, the exhaust manifold torque is different from a naturally aspirated 3.152. That data is in Section C. Don’t mix them up.

7 Systems Covered in This Workshop Manual

This workshop manual breaks down the engine into seven major systems: Cylinder Head, Pistons and Connecting Rods, Cylinder Block and Liners, Crankshaft and Main Bearings, Lubrication, Cooling, and Fuel. Each section has its own disassembly, inspection, and reassembly instructions. That’s the difference between an OEM book and a generic one. Section G – Pistons and Connecting Rods – includes ring gap specs and rod side clearance. Section H – Crankshaft and Main Bearings – gives journal wear limits and bearing shell selection.

Get the Right Tool List from Section W

Section W lists approved service tools. You’re not going to rig a puller for the crankshaft gear. The manual shows the correct tool part numbers for Perkins-approved equipment. Use them, or don’t come crying when a bearing slides out of spec. For the fuel injection pump on the 3.1522, you need a specific timing pin. Section W tells you the part number. No improvisation.

Cooling System: Factory Maintenance Schedule

Section M covers cooling system service. Thermostat replacement, water pump inspection, and flushing procedure. The manual tells you the coolant capacity in quarts and the correct mix ratio. Not a guess. If you’re working on a D3.152M marine engine, Section T – Marine Engines – includes the heat exchanger, sea water pump, and raw water cooling specifics. That’s information you won’t find in any aftermarket book.

Who should buy this? If you’re rebuilding a D3.152M marine unit or a 3HD46 industrial engine, this is the only manual that covers the marine-specific components. DIYers get the safety warnings in Section A – asbestos joint handling, proper lifting points. Beginners need the running-in procedure for a fresh rebuild – it’s in Section A too. Professional mechanics will appreciate the fault diagnosis section (Section E) with indexed troubleshooting steps. No wasted time flipping pages.

This is not an aftermarket reprint. It’s the original Perkins Workshop Manual from 1991, Publication No. TPD 1091 1208E. The same document that superseded the previous edition. Every specification is factory-verified. The wiring diagrams in Section Q – Electrical System – are accurate for the starter, alternator, and glow plug circuit on these engines. Don’t trust a third-party PDF that might have scanned pages out of order.

Related manuals you might need: Perkins 4.2482/4.248/4.236 Diesel Engines Manual covers larger displacement engines often found in similar applications. Perkins 4.41 Series Model LM Workshop Manual for the compact industrial line. Manuel d’Atelier Tracteurs Ferguson TEF20 if you’re working on vintage tractors with Perkins power. For transmission work on equipment using these engines, check Manual Transmission basics. And for broader context, Automotive Industry Overview covers modern trends – but this manual stays true to old-school rebuild methods.

Does this manual cover the T3.1524 turbocharged engine?

Yes.

What about marine engines – does it include the D3.152M and 3HD46?

Section T – Marine Engines – is about 20 pages covering the D3.152M and 3HD46 specifically. It includes the heat exchanger service, raw water pump rebuild, and exhaust elbow inspection. There’s also prop shaft alignment specs and marine-specific torque values for the coupling. If you’re working in a saltwater environment, the corrosion prevention notes are critical. The manual also covers the 3HD46 auxiliary engine used in some generator sets. That section alone saves you from hunting down obsolete marine service bulletins.

Are the torque specs in lb-ft or Nm?

Imperial units – lb-ft. The manual also includes Nm equivalents in parentheses.

Is this a physical book or a digital access?

Immediate PDF format after purchase. 128 pages, searchable, printable.

Stop wasting time with incomplete data. The factory sequence, the correct specs, the safety warnings – all here. Access the Factory Manual and get back to the job.