Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Shock Absorber Bolt Torque
Forum Index -> Split Bus Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
j.pickens
Samba Member


Joined: December 03, 2002
Posts: 8815
Location: Exit 7, New Jersey
j.pickens is offline 

PostPosted: Thu Mar 19, 2015 8:14 pm    Post subject: Shock Absorber Bolt Torque Reply with quote

In the Without Guesswork torque specifications, it shows 21 to 25 ft. lbs. tightening torque for the front shock bolts.

When I reassembled my bus, I used that torque, but it seemed low, it felt like I could have applied more oomph in tightening.

I went with it, but now, several thousand miles later, my top passenger side shock bolt rattled out, making for some scary banging sounds until I could pull over and see WTF was causing it.

Anyway, am I reading the specs. correctly?
What torque are you using?
Opinions?

Copy of page:

Image may have been reduced in size. Click image to view fullscreen.

_________________
Founder and Chairman Emeritus, ECMSAS
BBX BBXII and BBXXI Long Distance Award Winner
BeaterBarndoor wrote:

i wish more people would actually drive their vws rather than just talking about what they have in the garage.

Red Fau Veh wrote:
If you've seen one sunroof swivel seat kombi, you've seen them all! Cool
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
campingbox Premium Member
Samba Member


Joined: November 14, 2000
Posts: 9680
Location: Olympia, Washington
campingbox is offline 

PostPosted: Thu Mar 19, 2015 8:28 pm    Post subject: Reply with quote

That does sound really low.

I usually just make the pretty tight - can't recall torqueing them before.

I checked the '55 workshop manual, '59 workshop manual, and the '63 workshop manual. All three did not call for a torque spec.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
easy e Premium Member
Samba Member


Joined: May 28, 2008
Posts: 2852
Location: Grover Beach, CA
easy e is offline 

PostPosted: Thu Mar 19, 2015 8:31 pm    Post subject: Reply with quote

For top
10 mm 14ft-lbs
12 mm 25ft-lbs

Can always use nylock nut

Jives with post... but looked here:
http://chircoestore.com/tech_articles/?p=153
_________________
Searchable, click-navigable 1958 Bus Parts List
Stop dead photo links! Post your photos to The Samba Gallery!
"They are about as worthless as the tits on the boars that live in the woods behind their junk yard." -Weatherly
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
j.pickens
Samba Member


Joined: December 03, 2002
Posts: 8815
Location: Exit 7, New Jersey
j.pickens is offline 

PostPosted: Thu Mar 19, 2015 8:48 pm    Post subject: Reply with quote

campingbox wrote:
That does sound really low.

I usually just make the pretty tight - can't recall torqueing them before.

I checked the '55 workshop manual, '59 workshop manual, and the '63 workshop manual. All three did not call for a torque spec.

Yeah, I couldn't find a torque in the workshop manuals, so I used the one listed in the photo.Even there, its the beetle torque listed, not a bus spec.

And I can't use a nylok nut on the top because the early beam uses the beetle style special bolt with the large shaft and small thread.

I'm gonna re tighten all the shock bolts to 40 ft. lbs. and call it done.
_________________
Founder and Chairman Emeritus, ECMSAS
BBX BBXII and BBXXI Long Distance Award Winner
BeaterBarndoor wrote:

i wish more people would actually drive their vws rather than just talking about what they have in the garage.

Red Fau Veh wrote:
If you've seen one sunroof swivel seat kombi, you've seen them all! Cool
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
easy e Premium Member
Samba Member


Joined: May 28, 2008
Posts: 2852
Location: Grover Beach, CA
easy e is offline 

PostPosted: Thu Mar 19, 2015 8:56 pm    Post subject: Reply with quote

Bay window is 36ft-lbs... FWIW
_________________
Searchable, click-navigable 1958 Bus Parts List
Stop dead photo links! Post your photos to The Samba Gallery!
"They are about as worthless as the tits on the boars that live in the woods behind their junk yard." -Weatherly
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
Clara Premium Member
Samba Member


Joined: June 14, 2003
Posts: 10608
Location: Washington
Clara is offline 

PostPosted: Thu Mar 19, 2015 9:20 pm    Post subject: Reply with quote

Did you use the correct washer? It's the one with the serrated edges.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
EverettB Premium Member
Administrator


Joined: April 11, 2000
Posts: 57120
Location: Phoenix, AZ
EverettB is offline 

PostPosted: Thu Mar 19, 2015 10:39 pm    Post subject: Reply with quote

Clara wrote:
Did you use the correct washer? It's the one with the serrated edges.

I was thinking this too - they have "lock" washers.

I can't recall torquing the tops to spec but I know I retorqued the bottoms and installed new washers as they were missing on my '63 when one was loose. They have not come loose again.
_________________
How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Instagram Gallery Classifieds Feedback
Big Bill
Samba Member


Joined: June 21, 2005
Posts: 1192
Location: Santa Rosa, Ca
Big Bill is offline 

PostPosted: Fri Mar 20, 2015 7:15 am    Post subject: Reply with quote

I also lost a top shock bolt not too long ago, after changing the shocks. I remember thinking the same on the low torque setting, and I didnt use the serrated washers. I always use Anti-seize goop on most bolts so that cant help at that low setting. It is getting hard to find that top bolt I dug around in the local VW repair shops bolt buckets for over an hour before finding a few. I will recheck them NOW and get some serrated washers. Very Happy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
j.pickens
Samba Member


Joined: December 03, 2002
Posts: 8815
Location: Exit 7, New Jersey
j.pickens is offline 

PostPosted: Fri Mar 20, 2015 7:20 pm    Post subject: Reply with quote

I did use the serrated washers. They came with the shocks, though they seemed flimsy compared to original ones. I like the sound of the bay window torque spec.
_________________
Founder and Chairman Emeritus, ECMSAS
BBX BBXII and BBXXI Long Distance Award Winner
BeaterBarndoor wrote:

i wish more people would actually drive their vws rather than just talking about what they have in the garage.

Red Fau Veh wrote:
If you've seen one sunroof swivel seat kombi, you've seen them all! Cool
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
easy e Premium Member
Samba Member


Joined: May 28, 2008
Posts: 2852
Location: Grover Beach, CA
easy e is offline 

PostPosted: Fri Mar 20, 2015 9:34 pm    Post subject: Reply with quote

But, if it's a bigger bolt... it's inappropriate for a smaller one.
Torque is specific to achieve a certain amount of thread deformation in the elastic region...without taking the steel into the plastic region. Go there & you're going backwards, in terms of strength & reliability. You can't tell by looks or feel.
If the washer was flimsy, try a better one and/or nylock nut.
_________________
Searchable, click-navigable 1958 Bus Parts List
Stop dead photo links! Post your photos to The Samba Gallery!
"They are about as worthless as the tits on the boars that live in the woods behind their junk yard." -Weatherly
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
j.pickens
Samba Member


Joined: December 03, 2002
Posts: 8815
Location: Exit 7, New Jersey
j.pickens is offline 

PostPosted: Sat Mar 21, 2015 2:14 pm    Post subject: Reply with quote

easy e wrote:
But, if it's a bigger bolt... it's inappropriate for a smaller one.
Torque is specific to achieve a certain amount of thread deformation in the elastic region...without taking the steel into the plastic region. Go there & you're going backwards, in terms of strength & reliability. You can't tell by looks or feel.
If the washer was flimsy, try a better one and/or nylock nut.

Can't use a nylok nut, the "nut" is the threaded socket of the front beam shock towers.
_________________
Founder and Chairman Emeritus, ECMSAS
BBX BBXII and BBXXI Long Distance Award Winner
BeaterBarndoor wrote:

i wish more people would actually drive their vws rather than just talking about what they have in the garage.

Red Fau Veh wrote:
If you've seen one sunroof swivel seat kombi, you've seen them all! Cool
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
easy e Premium Member
Samba Member


Joined: May 28, 2008
Posts: 2852
Location: Grover Beach, CA
easy e is offline 

PostPosted: Sat Mar 21, 2015 4:26 pm    Post subject: Reply with quote

Right... had rear on my mind.
_________________
Searchable, click-navigable 1958 Bus Parts List
Stop dead photo links! Post your photos to The Samba Gallery!
"They are about as worthless as the tits on the boars that live in the woods behind their junk yard." -Weatherly
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
5657
Samba Member


Joined: April 11, 2010
Posts: 82
Location: North Okanagan, BC CANADA
5657 is offline 

PostPosted: Fri Jan 12, 2018 8:20 pm    Post subject: Re: Shock Absorber Bolt Torque Reply with quote

John Muir's book says:

Shock absorber nut
Socket size 13mm 14-22 ft/lbs

Shock absorber bolt
Socket size 17mm 22-25 ft/lbs

I thought the split bus rear shocks used a bolt and nut arrangement top and bottom.

Values were given in the thread of 14 ft/lbs for 10mm and 25ft/lbs for 12mm
but as far as I can tell, there are only 12mm bolts back there. VW parts book shows the rear shock nut as M12x1.5.

Suggestions in the thread for torque range from 14 to 40 ft/lbs and others say they don't torque these bolts at all.

Nothing in the Progressive Refinements or the Bentley manual.

Did I not read the thread correctly or is there actually no answer to this question? Any clarification will be appreciated as I am in the process of installing new rear shocks. Thanks.
_________________
1956 Type 2 Ambulance
1957 Type 1 Deluxe
1975 914 2.0 litre
2017 Jetta TSI
Back to top
View user's profile Send private message Gallery Classifieds Feedback
EverettB Premium Member
Administrator


Joined: April 11, 2000
Posts: 57120
Location: Phoenix, AZ
EverettB is offline 

PostPosted: Fri Jan 12, 2018 10:23 pm    Post subject: Re: Shock Absorber Bolt Torque Reply with quote

Quote:
I thought the split bus rear shocks used a bolt and nut arrangement top and bottom.

Yes, they do

'71 version of Without Guesswork
Image may have been reduced in size. Click image to view fullscreen.

If the Split Bus bolts are M12 I would use that torque rating (43 lbs)

I can't remember every torquing the the rears either, I just make them pretty tight.
_________________
How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Instagram Gallery Classifieds Feedback
Harleyelf
Samba Member


Joined: April 23, 2009
Posts: 1544
Location: Appleton, WI
Harleyelf is offline 

PostPosted: Sat Jan 13, 2018 11:53 am    Post subject: Re: Shock Absorber Bolt Torque Reply with quote

If you buy good grade 8 or better bolts at Fastenall, you can exceed the factory specs. Bolt steel was softer 50 years ago. I torque mine to 35.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
mandraks
Samba Member


Joined: November 28, 2004
Posts: 4501
Location: Lawrenceville, Ga
mandraks is offline 

PostPosted: Sat Jan 13, 2018 12:46 pm    Post subject: Re: Shock Absorber Bolt Torque Reply with quote

not sure i agree, a DIN 8.8 bolt is a DIN 8.8 bolt.

a used old bolt vs a new bolt of the same spec is a different conversation, but spec is spec.
_________________
regards

Uli

----------------------------------------
'53 3-Fold Oval, L35 Metallic Blue, looking for a narrow hatch panel
Back to top
View user's profile Send private message Gallery Classifieds Feedback
5657
Samba Member


Joined: April 11, 2010
Posts: 82
Location: North Okanagan, BC CANADA
5657 is offline 

PostPosted: Sat Jan 13, 2018 1:47 pm    Post subject: Re: Shock Absorber Bolt Torque Reply with quote

The 1969 Without Guesswork says 43 ft/lbs also. Only problem is that the bay windows were around in 1969 and 1971. With respect to the rear shock bolts, Without Guesswork doesn't distinguish between bay windows and the earlier split window buses. If the numbers given apply to all buses, why didn't VW publish the spec prior to 1969?
Also, what is the quality of the new shock bolts in the kits being currently sold by commercial vendors?
_________________
1956 Type 2 Ambulance
1957 Type 1 Deluxe
1975 914 2.0 litre
2017 Jetta TSI
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Split Bus All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2016, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB