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Qldelsie Samba Member
Joined: September 22, 2019 Posts: 518 Location: Queensland Australia
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Posted: Sun Mar 01, 2020 6:04 pm Post subject: Manuals have incorrect torque data |
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Due to my mechanical inneptitude, I'm following both Haynes and Bentley manuals religiously while I rebuild my car.
Momentous occasion (for me) that I eventually got all the rubbers in my trailing arms replaced, torsion bars back in in the correct position and tensioned, (which with no engine in the car to hold it down required an inventive mind !) and was finally putting the torsion bar covers back on, with the 4 bolts each side. Manual says 80 ft lbs. My feeble ageing body struggles, and I only get to 55 ft lbs, and meanwhile I am thinking "Why do these bolts need to be so bloody tight ?". Recheck manuals, BOTH say 80. Keep struggling, and get 7 of the 8 bolts to 60 and decide that will do. Move to the last bolt - and it shears off. ************
Totally disappointed as I need to get the brakes and wheels on so I can move the car, I go inside for a cool drink (it is over 30 deg C here at the moment) and check the internet. What do I find posted ?? Only 25 ft lbs required for these bolts !!! You have to be KIDDING !
Does anyone know if there are there any OTHER torque settings in the manuals that are wildly incorrect like this ??
G
PS The fact that I subsequently found the supplier had sent incorrect rear rubber brake hoses (M/F fitting on RHS instead of F/F) was enough to drive me out of the garage for the rest of the day !!
A frustrating day with my Fastback !! |
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DHanna Samba Member
Joined: June 15, 2004 Posts: 240 Location: North Richmond, N.S.W Aust.
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Posted: Sun Mar 01, 2020 7:30 pm Post subject: Re: Manuals have incorrect torque data |
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Are you sure you are reading which bolts require the 80ft lbs? It is 80 for the bolts which holds the axle assembly to the spring plates from memory, not the ones holding the cover plate on the torsion bars.
Yes I know what you are talking about with the flex lines as a supplier did the same to me. |
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gt1953 Samba Member
Joined: May 08, 2002 Posts: 13846 Location: White Mountains Arizona
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Posted: Mon Mar 02, 2020 7:27 am Post subject: Re: Manuals have incorrect torque data |
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If I were home i would look it up in my without guess work manual. That has proven to very handy manual. _________________ Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
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Erik G Samba Member
Joined: October 16, 2002 Posts: 13269 Location: Tejas!
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Posted: Mon Mar 02, 2020 9:36 am Post subject: Re: Manuals have incorrect torque data |
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the cooling fan bolt torque value is wrong in some manual as well. I guess it comes from years of wrenching on these things but I have a general sense of what's good n tight enough. should have listened to yourself _________________ Stop dead photo links! Post your photos to The Samba Gallery! |
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gt1953 Samba Member
Joined: May 08, 2002 Posts: 13846 Location: White Mountains Arizona
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Posted: Mon Mar 02, 2020 7:46 pm Post subject: Re: Manuals have incorrect torque data |
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I do refer to this manual when in question about the Bentley or Haynes or Clymer etc.
https://www.thesamba.com/vw/archives/manuals/witho...201972.pdf _________________ Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
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Qldelsie Samba Member
Joined: September 22, 2019 Posts: 518 Location: Queensland Australia
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Posted: Tue Mar 03, 2020 3:00 am Post subject: Re: Manuals have incorrect torque data |
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Absolutely certain, DHanna. In Bentley's, page 71 item 7 says "install the original spring plate hub cover bolts and tighten them to 11.0 mkg / 80 ft lbs".
Page 71 item 9 says "Secure spring plate to .....diagonal arm ......Torque the bolts to 11.0 mkg / 80 ft lbs.
Can't be much clearer than that !!!
Haynes has only 72 ft/lbs for the spring plate nuts and bolt, and no setting (that I can find) for the hub cover bolts.
Thanks gt1953, useful, but that makes a 3rd item we have to check. Then we have to decide which is correct !! This one says 80 ft lbs for the spring plate bolts, and just 25 for the hub cover plate - Which is what mine are now set at.
Tx,
G |
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Bobnotch Samba Member
Joined: July 06, 2003 Posts: 22407 Location: Kimball, Mi
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Posted: Tue Mar 03, 2020 1:00 pm Post subject: Re: Manuals have incorrect torque data |
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Qldelsie wrote: |
Absolutely certain, DHanna. In Bentley's, page 71 item 7 says "install the original spring plate hub cover bolts and tighten them to 11.0 mkg / 80 ft lbs".
Page 71 item 9 says "Secure spring plate to .....diagonal arm ......Torque the bolts to 11.0 mkg / 80 ft lbs.
Can't be much clearer than that !!!
Haynes has only 72 ft/lbs for the spring plate nuts and bolt, and no setting (that I can find) for the hub cover bolts.
Thanks gt1953, useful, but that makes a 3rd item we have to check. Then we have to decide which is correct !! This one says 80 ft lbs for the spring plate bolts, and just 25 for the hub cover plate - Which is what mine are now set at.
Tx,
G |
I think when I did them last, I went with 30 ftlbs. After all, they just hold the cover on. Now the bolts that hold the spring plate to the arm, those I went 80 ftlbs on, as I didn't want them coming off. _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
Tram wrote: |
"Friends are God's way of apologizing for relatives." |
Tram wrote: |
People keep confusing "restored" and "restroyed". |
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Qldelsie Samba Member
Joined: September 22, 2019 Posts: 518 Location: Queensland Australia
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Posted: Tue Mar 03, 2020 5:38 pm Post subject: Re: Manuals have incorrect torque data |
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Bobnotch wrote: |
I think when I did them last, I went with 30 ftlbs. After all, they just hold the cover on. Now the bolts that hold the spring plate to the arm, those I went 80 ftlbs on, as I didn't want them coming off. |
Agreed. Just wish I had known that 3 days ago !!
All good now ! |
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