Description

Hyster S2.0-3.5FT, S40-70FT, S55FTS, H2.0-3.5FT, H40-70FT Service Manual

I have seen more than a few guys try to swap an engine on a Hyster lift truck using a Chilton’s or some photocopied sheet from the last guy who “knew what he was doing.” That ends with a thrown timing belt, a bent valve, and a phone call to the parts guy on Saturday. The Hyster S2.0-3.5FT, S40-70FT, S55FTS, H2.0-3.5FT, H40-70FT Service Manual is what you put on the bench when you want to do it once. It is 76 pages of factory procedure for the GM 2.4-liter engine used in those trucks. No guesswork, no “I think the torque is 80 ft-lb.”

GM 2.4L Engine Repair: What This Manual Covers

The entire manual is built around the GM engine repair section—from intake manifold to oil pan. You get step-by-step removal and installation for the intake and exhaust manifolds, camshaft and cylinder head repair, timing belt service, lubrication system, piston and rod assemblies, crankshaft and main bearings, flywheel, cooling system, and all the sensors and switches. The table of contents lists each sub-step: remove, clean and inspect, install. That level of detail matters when you are holding a camshaft carrier and wondering which way the dowel pin faces. Page numbers are not plastered everywhere in this manual, but the torque spec section at the back is the one you will dog-ear.

Camshaft and Cylinder Head Repair: Factory Sequence

This chapter breaks out the rocker arm cover, camshaft timing pulley and front seal, then the carrier and cylinder head as an assembly. It gives you separate procedures for disassembly, cleaning, inspection, valve and valve seat work, assembly, and installation. If you skip the clean-and-inspect step on the cylinder head mating surface you will chase oil leaks for a month. The manual spells out the inspection criteria for warpage and camshaft journal clearance. Follow the sequence and you won’t be buying a second head gasket.

Torque Specs and Engine Data

At the back of the manual you get engine specifications: cylinder bore, piston, piston rings, wrist pin, crankshaft, piston rod, camshaft and carrier, valve system, cylinder head warpage limits, lubrication and cooling system data. Then the torque specification table. Every fastener that matters has a value. You need the main bearing cap torque? It is listed. Cylinder head bolt sequence and torque? There. The manual also includes a special tools list so you can round up the correct puller or seal installer before you start. That alone can save you a trip to the tool truck in the middle of a job.

Safety Precautions: Not Optional

Page two of the manual slaps you with a full page of safety precautions. “Disconnect the battery ground cable on internal combustion lift trucks.” “Use correct blocks to prevent the unit from rolling or falling.” “Always use HYSTER APPROVED parts when making repairs.” I have seen a lift truck come off blocks because a guy used a stack of 2x4s instead of proper stands. The manual warns about flammable fuels, battery gas, and the need for a DO NOT OPERATE tag. If you are a home garage guy, read that page twice. It is not filler—it is the difference between walking away at the end of the day and riding in an ambulance.

Audience Fit: Who Needs This Manual

This manual is for anyone working on a Hyster S2.0-3.5FT (S40-70FT, S55FTS) with the F187 chassis or a H2.0-3.5FT (H40-70FT) with the L177 chassis. If you are a shop owner, put this on the tablet in Bay 4 so your junior tech does not guess at the camshaft position sensor removal procedure for trucks built after January 2010. If you are a DIY fleet mechanic, you need the factory wiring and sensor specs to avoid frying a CKP sensor. Even if you are just changing the serpentine belt and water pump, the manual gives you the belt routing and the torque for the water pump bolts. Aftermarket manuals skip those details.

Source Validity: OEM vs Aftermarket

This is an original Hyster publication, part number 1580503, 600 SRM 1121. The OEM copyright notice is right there on page two. Aftermarket manuals copy the pictures but change the torque values—I have seen a 20 Nm difference on a manifold bolt. You cannot trust a third-party reprint when you are holding a $2,000 cylinder head. This manual comes from the factory, same as what a Hyster dealer tech uses. It is the only source for the correct camshaft timing procedure and the exact clearance for the reluctor wheel. Hyster S2.0-3.5FT, S30-35FT, S40FTS, H1.6-1.8FT, H2.0FTS Manual covers the earlier chassis if you need that. For electrical troubleshooting, Hyster S30FT, S35FT, S40FTS, H1.6FT, H1.8FT 2013 Wiring Diagram gives you the harness layout. And Hyster A513 A514 A613 A614 A702 2014 Service Manual is for the larger trucks. For general transmission theory, refer to Manual Transmission basics, though this manual focuses on the engine only. The fuel and exhaust sections are specific to the Hyster installation; do not use a generic Manual Transmission guide for the flywheel housing removal. Stick with the OEM document.

FAQ

Does this manual cover the fuel system or transmission?

No. This is strictly the GM engine repair section for the 2.4L engine used in the listed Hyster models. Fuel system, hydraulics, and drivetrain are in separate manuals. You need the full service manual set for those systems.

What torque values are listed?

The torque specification table covers cylinder head bolts, main bearing caps, connecting rod nuts, oil pump, water pump, timing belt tensioner, flywheel bolts, and many more. All values are in both Nm and lb-ft. Page numbers are not given here, but the section is two pages at the end of the 76-page document. You will find it quickly.

That is what you get: 76 pages of factory Hyster documentation for the GM 2.4L engine. No fluff, no copyright-date missing, no aftermarket guesswork. If you are rebuilding a camshaft carrier, pulling a crankshaft, or just setting valve clearance, this is the paper (or PDF) that keeps your job on time and your parts budget intact. Access the Factory Manual from AutoRepairManuals and put it on your workbench.