Description

ZF S5-42, S5-47, S5-47M 2002 Service Manual

If you’re pulling a ZF S5-42, S5-47, or S5-47M transmission in a 1995 F-250, Bronco, or F-Super Duty and you don’t have the factory preload specs, you’re going to wreck an aluminum case. That’s not opinion – that’s the design. These transmissions use shrink-fit gears and require specific bearing preload to handle thermal expansion. The 2002 ZF S5-42, S5-47, S5-47M service manual gives you the exact numbers so you don’t end up with a case full of end-play after a warm run. I’ve seen guys skip the preload step and chew up a countershaft in 500 miles. Don’t be that guy.

Full Disassembly and Case Service

This 78-page manual walks you through transmission removal, input shaft and extension housing seal replacement, output shaft assembly, and case disassembly. Page 4 shows the complete table of contents – sections include ‘Transmission Case Removal’, ‘Extension Housing’, ‘Input Shaft and Extension Housing Seal (4×4 and 4×2)’, and ‘Transmission Disassembly’. You get the OEM procedure for pulling the aluminum case without warping the mating surfaces. The manual also covers the ‘Checking Fl’ – that’s the clutch hub and shift fork spring inspection. Every step is tied to Ford part numbers and tool callouts.

Why the Preload Specs Matter

Page 3 explains exactly why: aluminum case expands faster than steel shafts. If you don’t preload the bearings, thermal expansion creates end-play under load. The manual gives you the preload procedure for the mainshaft and countershaft bearings – you’ll need a dial indicator and a torque wrench that reads in inch-pounds. I’ve seen aftermarket manuals skip this entirely. This one doesn’t. The shrink-fit gear assembly on the countershaft is also covered – you heat the gear, press it onto the cluster shaft, and let it cool. The manual tells you the interference fit specs and how to check the spline lock.

Oil Specs and Fluid Capacity – Don’t Guess

For the 7.3L Diesel, this manual specifies synthetic MERCON (Ford part number E6AZ-19582-B) meeting ESR-M2C 163A2. Capacities are listed in liters – page 3 shows the table for 4×4 and 4×2 versions. You also get the ‘Built Qty’ and ‘Oil Spec’ for each variant. If you ignore the fluid spec and pour in generic ATF, you’ll get clutch chatter and synchro wear. I’ve seen it. The manual includes the ‘Transmission Identification’ section so you can match your serial number to the correct fluid.

Diagnosis and Testing – Take the Right Path

The manual dedicates several pages to symptom-based troubleshooting: ‘Cold Transmission’ and ‘Warm Transmission’ test procedures, plus a Symptom Chart for non-electronic shift 4×4 trucks. It’s not a generic list – it’s the Ford powertrain diagnostic flow built around the ZF case. Use this if your transmission is noisy in 3rd gear or pops out of 2nd. You’ll also find the ‘Race and Tests’ section for bearing inspection – that’s how you check for false brinelling without wasting a micrometer.

Does This Manual Cover the S5-47M?

Yes. The title includes the S5-47 and S5-47M, which is the medium-duty variant used in heavier F-Super Duty chassis. The manual covers both 4×2 and 4×4 versions. If you’re working on a 1995-2002 Ford with one of these ZF boxes, this is the correct factory publication. It does not cover electronic shift (AS Tronic) – that’s a different manual, like the ZF S5-42, S6-36, S4-420, AS Ecolife, AS Ttronic Lite 2011 Technical Manual”> – but for mechanical shift S5-42/47/47M, this is it.

Synchronizer and Shift Fork Wear Inspection

Pages 61-62 of the manual cover synchronizer rings, shift fork/clutch hub springs, and speedometer gears. You get the wear limits and spring tension specs. I’ve replaced a shift fork that was 0.015″ out of spec and fixed a hard 1-2 shift the owner had lived with for months. The manual also details ‘Clutch Release Contraction Spring Tension’ – that’s the spring that keeps the clutch fork engaged. If that tension drops, you’ll burn up the release bearing.

Source Authenticity – OEM vs Aftermarket

This is a scan of the 2002 Ford ZF service manual, not a third-party compilation. The page headers read ’07-03B Transmission, Model S5-42 ZF’ with Ford part numbers and drafting marks. Aftermarket manuals often delete the preload specs because they don’t understand the aluminum case physics. This one has them. You can cross-reference the torque values with the original Ford powertrain book. For related manuals, see ZF MCI Coaches 2008 Service Manual – Approved Lubricant Specs”> and ATSG ZF 5HP19FL Transmission Service Manual”> – but those cover different ZF families. For broader context on manual transmissions, check the Manual Transmission”> entry on Wikipedia.

What torque values are listed in this manual?

The manual includes bearing preload specs, extension housing bolt torque, and input shaft locknut torque. Exact values are in inch-pounds and foot-pounds on the specific procedure pages – page 3 gives preload procedure context, page 4 lists the full TOC to find each torque step.

Can I use this manual for a 1993 F-150 with the same ZF?

No. The manual covers 1995–2002 Ford trucks with the S5-42, S5-47, or S5-47M. Earlier models used different input shaft lengths and shift rails. Check your transmission serial number against the identification table on page 3 to confirm fit.

You need to Access the Factory Manual if you want the actual bearing preload sequence and the shrink-fit gear heating spec. That 78-page PDF will save you a replacement transmission.