Description

Mitsubishi Motors W5MG1, W6MG1 1995 Service Manual

If you’re digging into a Mitsubishi transmission from the mid-90s and you don’t have the factory book in front of you, you’re working blind. Aftermarket manuals skip the fine print – the exact torque values for the center differential housing bolts, the correct spacer thickness for the 5th-6th synchronizer, the sealant type for the rear cover. That’s how you end up with a leak that shows up 200 miles later or a synchro that grinds because the preload was off. This is the original Mitsubishi Motors W5MG1, W6MG1 1995 Service Manual – 64 pages of OEM data, not a reprint from a third-party scanner.

Torque Specifications: What the Factory Says

Page 22C-1-2 lists every torque spec for this transmission. Not a generic range – the exact ft-lb for the input shaft nut, the transfer case bolts, the front differential ring gear bolts. If you’re torquing the W5MG1 output shaft flange nut, you need the number from that page. I’ve seen guys use the wrong value from an aftermarket PDF and snap a bolt because the thread locker changed the friction. The manual also calls out sealants and lubricants on page 22C-1-3 – don’t substitute.

What This Manual Covers: Transmission Disassembly

The manual walks through the transmission in 13 sections. Section 3 covers the main transmission body removal. Section 4 goes into the input shaft – bearing removal, snap ring positioning, end play check. Section 5 is the intermediate gear. Then Sections 6 and 7 cover the synchronizers: 3rd-4th for the W5MG1, 5th-6th for the W6MG1. If you’re rebuilding a 6-speed, you need Section 7 specifically. The 5th-6th synchronizer has its own adjustment spacers listed in Section 1.

Does It Cover the 6-Speed W6MG1?

Yes, and it treats the W6MG1 as a separate variant with its own gear ratios and synchronizer assembly. The transmission model table on page 22C-1-1 shows which vehicle models got which transmission – for example, the 1995 EC models got the W5MG1-3-FNBR, while the EXP and AUS got the W6MG1-0-GNCR or LNAE. The gear ratio table is there too. If you’re swapping a transmission between years, you need to check the final gear ratio (3.972 vs 4.155) – the manual lists them.

3 Critical Tools You’ll Need

Section 2 lists special tools. For the center differential (Section 8) you’ll need a puller for the bearing. For the front output shaft (Section 9), a press and a dial indicator to set preload. The manual doesn’t assume you own a Mitsubishi special tool kit – it gives the tool numbers so you can source equivalents. But don’t skip the tool list. Trying to pull the 5th-6th synchro without the correct fixture will damage the hub.

Get the Right Torque Data Before You Start

You’ve got 64 pages of factory engineering. Every bolt, every sealant, every adjust spacer is called out. No extrapolating. No ‘tighten to feel.’ The torque table on 22C-1-2 is your reference for the entire job. Use it for the transfer case bolts – Section 13 – and the rear cover (Section 10). One wrong torque on the center differential (Section 8) and you’ll have bearing noise that sounds like a coffee grinder. Save yourself the rework.

Why OEM Documentation Beats Aftermarket

This isn’t a scanned copy of a copy. The file is the original Mitsubishi Motors Corporation service manual from February 1995 (revision PWEE8902-C). Every page is legible, every spec matches the factory print. Aftermarket manuals often reprint the gear ratio table but leave out the adjustment spacer chart or the sealant notes. I’ve seen aftermarket torque values that are off by 10 ft-lb. That’s the difference between a working transmission and a leaking, whining one. You pay once for the real thing. Related manuals: Mitsubishi Motors LASER TALON 1990 Service Manual, Mitsubishi Motors R5M3, V5M3 2000 Service Manual – Factory Transmission Specs, Mitsubishi Motors R4AW3, V4AW3 1997 Service Manual – Factory Specs.

For a broader look at manual transmission fundamentals, see Automotive Industry Overview and Manual Transmission. Understanding how gear ratios and synchronizers work in theory helps, but when you’re assembling the 5th-6th synchro on a W6MG1, you need the actual clearance specs from the manual, not general knowledge. The factory manual is your single point of truth.

Does this manual include wiring diagrams?

No. This is a mechanical service manual for the transmission only – no electrical or body sections.

How do I know which transmission model I have?

Check the transmission model code stamped on the case. The manual’s Transmission Model Table on page 22C-1-1 lists the codes for 1993 through 1996 model years. For example, if you see W5MG1-2-FNCR, that corresponds to a 1993 EC or EXP vehicle with a 3.972 final drive. The W6MG1-0-GNCR or LNAE appear in 1995-1996 models. The table also cross-references the engine model (6G72) and the vehicle model (Z16A). If the tag is missing, you can identify by gear ratios – the manual includes the Gear Ratio Table. But the simplest method is to locate the code on the transmission housing near the bellhousing. The manual does not cover removal and installation of the transmission from the vehicle – it assumes the unit is on the bench.

This is the file that belongs on your workbench, not a generic manual from a parts store. I’ve been in the trade for 28 years, and I can tell you the difference between a rebuild that lasts and one that comes back is having the factory specs. Don’t trust your time to a copy of a copy. Access the Factory Manual and get the correct torque values, sealant types, and adjustment procedures that keep this transmission running for another 100,000 miles.