Description

Toyota 2H, 12H-T 1985 Repair Manual – Factory OEM Specs

If you’re pulling a 2H or 12H-T head without the factory torque sequence, you’re asking for a warped deck. I’ve seen it happen to guys who trusted a five-dollar aftermarket PDF. This 1985 factory manual from Toyota 2H, 12H-T 1985 Repair Manual is the real deal — 338 pages of OEM specifications, written by the engineers who built the engine. No third-party shortcuts, no missing values.

Every section in this manual uses the original Toyota page numbering: Engine Mechanical starts at EM-1, Fuel System at FU-1, Cooling System at CO-1. You get the exact same tables and diagrams the dealership techs used. For the official view on factory documentation, check Automotive Industry Overview.

Toyota 2H, 12H-T 1985 Repair Manual: Factory-Only Specs

What you’re buying is a clean, scanned copy of the November 1985 publication — Pub. No. RM012E. The Foreword on page 2 states it covers HJ60, 61, 75 series Land Cruisers. Applicable models: 2H naturally aspirated and 12H-T turbocharged. That’s two engines, one manual, zero compromises. The Repair Manual title is stamped on every page, so you never wonder if you’re looking at the right document.

Engine Mechanical: The Core Section

The Engine Mechanical chapter runs 118 pages (EM-1 through EM-118). That covers cylinder head removal, valve timing, piston ring gaps, and main bearing clearances. If you need the torque for the cylinder head bolts, the spec is on page EM-30. I’ve seen people flip to a generic chart and snap bolts. Don’t be that guy. This section also includes the injection pump drive gear backlash — a critical adjustment that most aftermarket books skip entirely.

Torque is not optional.

What Torque Values Are Listed in This Manual?

Two dedicated sections handle torque. The Service Specifications section (pages A-1 to A-19) lists every fastener torque for the engine: connecting rod nuts, main bearing cap bolts, flywheel bolts, and the intake manifold. Need the injection timing? Page A-4 gives you the pump timing marks and the exact plunger stroke. Then there’s the Standard Bolt Torque Specifications section (pages B-1 to B-3). That’s your reference for bolts that don’t have a specific callout — like accessory brackets and engine mounts. Use these numbers, not a random internet table.

Fuel System: Injection Pump and Timing Data

Ninety-nine pages (FU-1 to FU-99) dedicated to fuel system diagnosis and overhaul. The injection pump on the 12H-T is a rotary unit, and the 2H uses an inline pump. This manual gives you the disassembly sequence, timing gear alignment, and the high-pressure line torque. It also includes troubleshooting charts for rough idle, low power, and black smoke. If you’re rebuilding a VE pump, the internal clearance spec is listed with feeler gauge sizes in fractions of an inch.

For related diesel engine manuals, see Toyota B, 3B, 2B 1980 Repair Manual – Factory OEM Specs.

Cooling and Lubrication: 25 Pages of Critical Data

The Cooling System chapter (CO-1 to CO-12) covers thermostat specs, water pump tear-down, and radiator capacity — 22 quarts with heater. The Lubrication section (LU-1 to LU-22) includes oil pump gear clearance, pressure relief valve spring specs, and oil pan torque. Both sections feed directly into the Service Specifications tables, so you can flip from an oil pump disassembly to the clearance spec on page A-10. That’s how a factory manual flows: procedure next to spec.

If you also work on smaller Toyotas, Toyota Tercel 1996 Repair Manual – 1202 Page Factory Spec PDF covers a completely different platform but shares the same attention to torque accuracy.

Service Specifications: Page A-4 for Injection Timing

This section is the backbone of any proper rebuild. The table on page A-4 gives the injection timing for both engines: 12° BTDC for the 2H, 10° BTDC for the 12H-T (with the dynamic timing method). Valve clearance cold: intake 0.008 inch, exhaust 0.014 inch. These numbers are taken from Toyota’s own engineering data — not from a Chilton’s rewrite. You also get alternator output specs, starter amp draws, and compression pressure limits (426 psi minimum for 2H, 498 psi for 12H-T).

Want to confirm the lineage? Automotive Industry Overview shows how Toyota structured their service literature around these bundles.

FAQ: Two Questions You’ll Ask

Does this manual include wiring diagrams?

No. This manual covers engine mechanical, fuel, cooling, lubrication, starting, and charging systems. Electrical wiring for the chassis is not included.

Is this a reprint or a factory original?

This is a high-resolution scan of the original Toyota publication from 1985 — not a third-party recompilation. The Foreword states “This manual may not be reproduced or copied without written permission of Toyota Motor Corporation.” You get 338 pages exactly as Toyota released them, with their original page numbering and torque tables. I’ve compared this to aftermarket “all-in-one” manuals, and they often miss the Standard Bolt Torque section (B-1 to B-3) entirely. That section alone has saved me from snapping M8 bolts on the intake manifold. If you want to rebuild a 2H or 12H-T correctly, this is the only source that has every spec from the factory.

For a similar engine family, Toyota 2L-T, 3L 1990 Repair Manual – Factory OEM Supplement covers the later generation with the same factory rigor.

Bottom line: you cannot field-strip a 2H or 12H-T properly without these torque values and clearances. Every time I use a manual like this, I save a trip to the parts store and a call to a buddy who “thinks he remembers the spec.” Access the Factory Manual now and keep it on your tablet or printed at the bench. The 338 pages will pay for themselves the first time you torque a cylinder head correctly.