4.8 GRX air con belt tensioning

Engines and Engine Systems
Post Reply
cjvp
Junior Member
Junior Member
Posts: 16
Joined: 26 May 2012 15:54
Full Name: Van Pletzen
Nickname: Japie
Home Town: Pretoria
Current 4x4: Nissan Patrol GRX
Home Language: Afrikaans
Has thanked: 2 times

4.8 GRX air con belt tensioning

Post by cjvp »

On holiday in Kosi Bay area. Aircon belt starting to slip on startup. Where do I tighten the belt. Difficult to see the belt tensioner from above. Japie van Pletzen.
User avatar
ChristoSlang
Patrolman
Patrolman
Posts: 851
Joined: 07 Apr 2009 16:54
Full Name: Christo van Rensburg
Nickname: ChristoSlang
Home Town: Pretoria, ZA
Current 4x4: Nissan 4.2 GL Patrol
Home Language: Afrikaans
Location: Garsfontein, Pretoria
Has thanked: 17 times
Been thanked: 116 times

Re: 4.8 GRX air con belt tensioning

Post by ChristoSlang »

Undo the idler pulley's center nut, adjust with the tensioner bolt, then tighten the center nut again. Cold belt deflection is specified as 9mm between the aircon & crankshaft pulleys at the bottom.
Attachments
Idler pulley locknut.PNG
Idler pulley locknut.PNG (55.78 KiB) Viewed 2976 times
Christo (the snake man)
1998 4.2 GL Patrol (Chuck Norris)
2007 350Z twin-turbo coupe (Batmobile)
Image
cjvp
Junior Member
Junior Member
Posts: 16
Joined: 26 May 2012 15:54
Full Name: Van Pletzen
Nickname: Japie
Home Town: Pretoria
Current 4x4: Nissan Patrol GRX
Home Language: Afrikaans
Has thanked: 2 times

Re: 4.8 GRX air con belt tensioning

Post by cjvp »

Thank you Christo; appreciate the detail provided.
Regards, Japie.
User avatar
SJC
Patrolman 1000+
Patrolman 1000+
Posts: 3200
Joined: 23 Nov 2014 14:20
Full Name: SJC
Nickname: Fanus
Home Town: Nelspruit
Current 4x4: 4.2 GQ (TB42)
Home Language: Afrikaans/English
Has thanked: 199 times
Been thanked: 173 times

Re: 4.8 GRX air con belt tensioning

Post by SJC »

ChristoSlang wrote: 24 Dec 2023 19:28 Undo the idler pulley's center nut, adjust with the tensioner bolt, then tighten the center nut again. Cold belt deflection is specified as 9mm between the aircon & crankshaft pulleys at the bottom.
do you perhabs have the "diagram" for the tb42?
I also need to adjust my aircon belt (on tb42).
1996 Nissan Patrol 4.2 SGL
User avatar
Peter Connan
Moderator
Posts: 6015
Joined: 10 Sep 2010 07:21
Full Name: Peter Connan
Nickname: Piet
Home Town: Kempton Park
Current 4x4: 1996 Patrol 4.5SGL
Home Language: Afrikaans
Location: Kempton Park
Has thanked: 1067 times
Been thanked: 987 times

Re: 4.8 GRX air con belt tensioning

Post by Peter Connan »

That diagram is correct for the TB42 Fanus
Mag ons ons kenniskry met lekkerkry aanhoukry.
Post Reply

Return to “09. Engines”

Who is online

Users browsing this forum: No registered users and 0 guests