Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Dtimot8 on March 26, 2014, 06:56:05 PM

Title: Help from mechanical Guru's - that lets me and BD out
Post by: Dtimot8 on March 26, 2014, 06:56:05 PM
First orf i done went and bought a old Nissan patrol 1996 2.8td as my tow vehicle
didn't pay lots for it but its relatively rot free
It had the most horrendous death wobble but this has been fixed fiting all new bits for the spindles
part of that job was oil seals (and lordy lord i actually got my hands dirty !!!) I now know why people use the axles - the shafts are F--King huge and bloody heavy
the waste gate was also seized - but with some gentle persuasion this now works

TO THE POINT
what are peoples thoughts on potential problems with the following

1 engine running clutch up in neutral it sounds as if i have another diesel behind the one in the engine bay

2 brake light flickers and brake efficiency very poor on tick over (my heart is just about back to normal following trip home from office)

My thoughts are first motion bearing for No.1 is it likely the box will go bang or just be more noisy
and for No.2 my guess is vacuum

Any thoughts Danny would be appreciated
Ta to all Tim
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: donk498 on March 26, 2014, 08:13:12 PM
1- clutch release bearing, does it go quieter if you lightly press the clutch.

2- vacuum leak on servo, or poor vac pump. Don't know where it is on one of them.
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: Bubba on March 26, 2014, 08:57:14 PM
 :iagree:
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: eastryjeep on March 26, 2014, 11:50:53 PM
Sometimes the links between the friction and pressure plates break leaving the clutch noisy as hell with pedal depressed and the whole lot out of balance with pedal released. Smooths out after 30 seconds of centrifugal forces centering things up but basicly sounds like 'tis time to replace clutch plates, throw out bearing, slave cylinder and gearbox input seal. Also check if flywheel still ok and gearbox bearings.
Has it got a gearbox drain plug? If so see if there are any shiny bits in the oil sometimes the plug is magnetic, if its all furry expect a lot of wear inside.
First thing to do is separate the box from the motor and see what falls on the floor and work from there.
Good luck.
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: Dtimot8 on March 28, 2014, 07:36:15 PM
Hi Chaps - thank you
in theory it had all 3 new clutch bits before i bought it - at least thats what the invoice says
you need to put clutch right in and free the splines on the pressure plate

Donk on the brakes (I'm about to show complete ignorance here) does a diesel engine not work with the same sort of vacuum from the inlet manifold ?
there is a whole lot of tanks and tubes linked to the vacuum pipe for the servo !!

Regards Tim
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: bigjeepzj on March 28, 2014, 07:56:36 PM
On diesels there's normally a pump on the back of the alternator. They can go faulty and need an oil supply off the engine.
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: donk498 on March 28, 2014, 08:43:03 PM
 :iagree:

Trace the pipe off the servo back to the vacuum pump. No vacuum from a diesel manifold due to no throttle butterfly closing the intake off.
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: Dtimot8 on March 29, 2014, 06:47:38 PM
Right oh
but the satan fuel truck is complificated
ta ever so Tim
Title: Re: Help from mechanical Guru's - that lets me and BD out
Post by: Bubba on March 29, 2014, 07:58:36 PM
post an engine pic  as some use a cam driven vacuum pump