Description

Nissan Altima Service Manual – Factory Specs for the 6MT and CVT

If you are working on an Altima transaxle and you don’t have the factory service manual, you are guessing. Guessing costs time and parts. I have seen too many stripped baulk rings and misadjusted shift linkages because someone used a generic manual or a forum post. This Nissan Altima Service Manual is the real thing – 398 pages of what Nissan’s engineers wrote for their own techs. It covers the 6MT RS6F52A and the CVT RE0F09B. Aftermarket copies? Don’t trust them. The torque specs in those are often off by 10–15 ft-lb. You need the OEM data. For more on why factory documentation matters, see Automotive Industry Overview. The Manual Transmission section alone has procedures that will keep you out of trouble.

6MT RS6F52A: What This Manual Covers

The manual starts with a cross-sectional view of the RS6F52A six-speed manual. It shows the double-cone synchronizer on 3rd gear and the triple-cone on 1st and 2nd. You get the reverse gear noise prevention function description – that uses a synchronizing method, not a simple sliding gear. That matters when you are diagnosing a grind in reverse. The system diagram is on page 1 of the TM section, but the real detail is in the disassembly section starting around page 28. Page 28 gives you the exploded views of the case, housing, shaft, gear, shift fork, fork rod, and final drive. You need those to know how the snap rings and shims stack up.

Inspect the Baulk Ring Clearance Before Assembly

If you skip the baulk ring clearance check, you will get a transmission that grinds on upshifts. The manual gives you the spec for single-cone synchronizer (4th, 5th, 6th), double-cone (3rd), and triple-cone (1st, 2nd). It also covers the synchronizer hub and coupling sleeve clearance, and the spread spring condition. This is not a generic ‘check for wear’ – they give you a number. For the triple-cone baulk ring clearance, look in the SDS section at the back of the 6MT chapter. That is the page you need to bookmark. Ignore aftermarket manuals that say ‘replace if loose’. Loose is not a number.

Does It Cover the CVT Section?

Yes. The CVT RE0F09B section has its own workflow. It starts with a diagnostic work sheet that includes a customer interview form – that is useful when the complaint is vague. Then it walks you through the detailed flow: how to confirm the symptom, check for DTCs, and perform the inspection and adjustment. One important note: the manual includes the additional service steps required when you replace the control unit. You have to perform a specific initialization procedure. Miss that step and the CVT will default to a failsafe mode. The manual tells you exactly what to do.

398 Pages of Factory Data

This is not a reprint or a scanned third-party document. It is the original Nissan service manual, direct from the factory files. The page count is 398, and every page is structured like the binders dealers use. You get the special service tool list – part numbers for the oil seal drift, the bearing puller, the preload gauge. You also get commercial service tool suggestions. If you work on Altimas regularly, this manual pays for itself in one job because you won’t waste time chasing aftermarket mistakes. For example, the SDS section gives you general specs for transaxle and final gear, end play values, baulk ring clearance, dimensions, differential side bearing preload, and differential side gear clearance. All Nissan, all verified.

On-Vehicle Repair Procedures

The manual covers side oil seal removal and installation – that is a common leak point on the RS6F52A. It gives you the correct depth to drive the seal, not ‘flush with case’. The back-up lamp switch and park/neutral position switch have their own inspection steps with a multimeter. Control linkage adjustment includes select cable adjustment – you need the special tool for that, and the manual lists the tool number. Even the air breather hose has an exploded view so you route it correctly. If you skip the breather routing, you will get oil mist on the bell housing.

NVH Troubleshooting Chart: Save Time

Noise, vibration, and harshness problems in a manual transaxle are often misdiagnosed. The manual includes an NVH troubleshooting chart that maps symptoms to likely causes. For example, a growl that gets louder in 4th gear points to the input shaft bearing. A clunk when shifting into 1st or 2nd tells you to check the triple-cone baulk ring. The chart is on page 11 of the TM section. Use it before you pull the transaxle. Replace the bearing you actually need.

Does this manual cover torque specifications for the transaxle?

Yes, the SDS section lists every torque value for bolts, nuts, and the differential side bearing preload. All in ft-lb or in-lb as required.

Is the manual a digital PDF or a printed book?

It is a digital PDF format. You can view it on any device, print specific pages for the workbench, and zoom into the exploded views.

How is the manual organized? I need to find the CVT diagnostic workflow quickly.

The manual splits into two main sections: 6MT and CVT. Each has its own table of contents. The CVT section begins with ‘BASIC INSPECTION’, then ‘DIAGNOSIS AND REPAIR WORKFLOW’. Inside that, you get the work flow diagram, the diagnostic work sheet, and the additional service after control unit replacement. There is also a page marker for the CVT section. Use the bookmarks in the PDF to jump directly.

What exactly does the baulk ring clearance specification include? I need to check a 1st gear synchronizer.

The manual specs the baulk ring clearance for each synchronizer type. For the triple-cone synchronizer on 1st and 2nd, it gives the minimum allowable clearance between the baulk ring and the cone surface. The measurement procedure is described in the ‘INSPECTION’ subsection under INPUT SHAFT AND GEAR and MAINSHAFT AND GEAR. You use a feeler gauge at three points around the ring. The spec is in the SDS at the end of the 6MT chapter. If you do not have that number, you cannot know if the ring is worn. Aftermarket manuals often omit this or give a generic range that does not apply to the RS6F52A.

Other manuals you might need: Nissan Altima 2007 Service Manual (if you work on later models), 2007 Nissan Altima Diagnostics Manual – CAN System for electrical gremlins, and Nissan Altima 2007 Technical Manual – SRS Airbag Diagnostics for airbag system repairs. Each is a separate product on AutoRepairManuals.

If you are serious about getting this transmission right, access the factory manual. It will save you from having to buy a new transaxle because you guessed the preload or ignored the baulk ring clearance.