Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

Nissan Patrol gearbox noise - can u help

General Tech Talk

Moderators: toaddog, TWISTY, V8Patrol, Moderators

Forum rules
Post Reply
Posts: 11
Joined: Sun Jul 11, 2004 12:09 pm
Location: Australia

Contact:
Contact AustralianOutdoors

Nissan Patrol gearbox noise - can u help

Post by AustralianOutdoors »

Hi all from Gerry
;)

i am new to 4x4outerlimits and i have a problem which i hope you can help me solve.

I have a 1983 Nissan MQ Patrol 2.8 litre petrol (L28) with a four speed box.

The gearbox is noisy at the higher rev end in 2nd and 3rd Gears. No noise in top or neutral.
just a little in first
It is like a gearshift vibration and is enhanced when tightly grabbing the
gearshift knob. (I have a noisy knob? - now that's a worry!!)

Seriously, I have removed the gearbox twice and ended up replacing all
bearing in the box plus the Input shaft. The gears all seem in top condition.
Still it remains the same.

I would be extremely pleased if anyone could help by advising me.

Thank you for taking the time to read this message

Regards and thank you

Gerry Noterey
www.australianoutdoors.com
I AM THE OWNER OF AN OUTDOORS WEBSITE AND HAVE A LOT TO DO WITH 4X4 AND OTHER AREAS OF THE OUTDOORS. I HOPE I CAN CONTRIBUTE IN SOME WAY TO OUTERLIMITS 4X4 AND BENEFIT FROM ALL OF YOUR EXPERIENCES
Top
Posts: 4275
Joined: Thu Dec 19, 2002 2:12 pm
Location: Sydney

Post by ozy1 »

This may be a long shot, i am no expert, but if youve replaced all the bearings, and rebuilt the box and all that, could if be a tailshaft vibration the is more evident at the speeds in 2nd and 3rd gears, maybe the tailshaft balance weight has come off somewhere along the lines?
Top
Posts: 11
Joined: Sun Jul 11, 2004 12:09 pm
Location: Australia

Contact:
Contact AustralianOutdoors

Post by AustralianOutdoors »

Ozy1

Thank you for your reply. i will certainly take a look at that as i have not suspected the tailshaft, but it might be the prob.

Thanks again

Gerry
I AM THE OWNER OF AN OUTDOORS WEBSITE AND HAVE A LOT TO DO WITH 4X4 AND OTHER AREAS OF THE OUTDOORS. I HOPE I CAN CONTRIBUTE IN SOME WAY TO OUTERLIMITS 4X4 AND BENEFIT FROM ALL OF YOUR EXPERIENCES
Top
Posts: 848
Joined: Fri Apr 02, 2004 12:01 pm
Location: Central Victoria

Post by Patroler »

Well I'd guess that when you put pressure on your knob it pushes the selectors against the groove in the gears (trying to shift them) making a noise (because they won't move - as they are under acceleration or deccelleration load), they would be in different positions depending on what gear youre in hence noise in different gears.
Ive only really stripped and rebuilt a cbr900 gearbox which is quite different (no synchros and dogs) but the shift forks which moved the gears had specific clearances between the respective gears, was the mq box like that?
And did you check the clearances against factory specs for the shift mechanism?
Also my mq and mk both had stuffed gearshift boots which made everything a lot noisier than it should have been.....
There are no stupid questions, but there are a LOT of inquisitive idiots
Top
Post Reply

Return to “General Tech”

Who is online

Users browsing this forum: No registered users and 125 guests