Fifth gear of MT popping out

Tiny
HARIMANDIR S KHALSA
  • MEMBER
  • 1998 TOYOTA RAV4
  • 2.0L
  • 4 CYL
  • 4WD
  • MANUAL
  • 199,500 MILES
Hi,

I have researched this subject on my car and found that the fifth gear can be accessed by a side access panel on the manual transmission. I found a kit online to replace the fifth gear, which included the following parts:

Fifth gear 40 teeth, 33336-42040

Internal split needle bearing, 90364-28023

Outer synchro hub sleeve, 33395-42012

Transmission hub fifth gear 33393-42010

I have replaced these parts and topped off the gear oil, but it still pops out of fifth gear. I have to hold the shifter into fifth so it does not pop out, but when I hold it there it feels more firm than it did before I replaced the above parts. I have also inspected shift linkages for a bent fifth gear linkage rod or bad linkage bushings. The fifth gear linkage rods and bushings looked good with no bent rods or worn out bushings.

The only other thing I think it could be is the synchronizer rings. From my research, people often replace the parts above and keep the original inner synchronizer rings that go inside the fifth gear transmission hub and that often would fix the fifth gear. Could worn synchro rings be the cause of the fifth gear still popping out? Are there specific syncro rings that could cause it to pop out of fifth?

Here are the three synchro ring part numbers for my car I've looked at replacing:

Toyota 33396-12011 - RING, SYNC

Toyota 33397-12011 - RING, SYNC

Toyota 33399-12011 - RING, SYNC
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Tuesday, November 20th, 2018 AT 2:38 PM

7 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good evening

I do not see the syncro itself on your list. Did you replace the syncro?

Yes, the rings need to be replaced along with the syncro.

Roy
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Tuesday, November 20th, 2018 AT 5:12 PM
Tiny
HARIMANDIR S KHALSA
  • MEMBER
Thank you for your reply,
Can you let me know which part number you are referring to? The link below has a diagram and the part numbers for the assembly:

https://jp-carparts.com/toyota/partlist.php?maker=toyota&type=662110&cartype=3&fig=3305
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Tuesday, November 20th, 2018 AT 11:57 PM
Tiny
ASEMASTER6371
  • EXPERT
33090 is part of it.

If you are going to get the syncro, get the complete syncro assembly. It contains the rings, slider and the brass sleeve. I am sure Toyota has a part number for the complete assembly.

Call Toyota parts department and get the part number from them and then you can shop for the part or get it from them.

Roy
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Wednesday, November 21st, 2018 AT 5:25 AM
Tiny
HARIMANDIR S KHALSA
  • MEMBER
Thanks again,

I called my local Toyota dealership and asked for the 5th gear synchronizer assembly and they gave me the part number for one of the rings in the assembly. It does not look like the whole assembly is sold together so I just ordered the individual parts.

I am wondering if the fork gear shift part could be part of the problem. I could not find the part number for my vehicle, but this is the part number for a Toyota 33213-35034. Also, I could not find the part 33090 that you mentioned in the diagram or online.
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Thursday, December 6th, 2018 AT 10:45 PM
Tiny
ASEMASTER6371
  • EXPERT
I doubt it is the shift fork at all. It is the syncro itself.

No, sorry I have no outlet to find that part for you. I only have what I sent you in the information system that I use.

Roy
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Friday, December 7th, 2018 AT 7:11 AM
Tiny
HARIMANDIR S KHALSA
  • MEMBER
I meant that I searched online and in the link below and have not found any mention of a Toyota transmission part with part number 33090. Do you have the full part number for it with the additional 5 digits?

Also, do you think part number 33398-12010 could be contributing to the problem? That was one part that the supplier I am using did not have in stock.

https://jp-carparts.com/toyota/partlist.php?maker=toyota&type=662110&cartype=3&fig=3305
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Friday, December 7th, 2018 AT 7:32 AM
Tiny
ASEMASTER6371
  • EXPERT
My access to those part numbers are limited. It just says that 33090 is part of an assembly and there is no part number.

It is part of the 33364 assembly.

Roy
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Friday, December 7th, 2018 AT 7:47 AM

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