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Looking for help with shock removal [message #287536]

Fri, 18 September 2015 20:47

trapper

Messages: 52
Registered: April 2015
Location: Saskatchewan, Canada

Karma: 0

Member

First thing's first... here's a picture...anything look out of whack?

http://i1160.photobucket.com/albums/q487/trapper_canada/shocks_zpsaf42oluh.jpg

The left shock is upside down. NO idea what historical event caused that one....

Anyways when I try to turn the top nut on that side it just spins the whole bolt. There doesn't seem to be anything on the backside to grab onto. How does this come off?

The hardware is very different from the other side...I tried that but I couldn't get the nut to budge. The entire assembly moved good when I applied a little torque. It looks like it was spray painted so it might just need a bit more torque...but I thought I'd check in here first to figure out for sure how to remove them. The bottom nuts loosen easy enough.

Also, these shocks look to be quite compressed...I imagine I need to jack the bogie up a bit to decompress them? The new KYB shocks I want to put on are significantly longer.

Any insight greatly appreciated!!!!!!!

75 Glenbrook

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Re: Looking for help with shock removal [message #287539 is a reply to message #287536]

Fri, 18 September 2015 21:09

Gadabout

Messages: 124
Registered: March 2013
Location: Edmonton

Karma: 2

Senior Member

Travis,

At the shop we would weld on a nut ( or just use a plasma cutter / torch)

But you may not have these so....

If there is a round head on the shock side, try to grab it with vise grips or a pipe wrench.

If that does not work you can to "Pinch" the stud by driving a chisel into it.

Next option, on the shock side, drill a 1/4" Hold in the shock mount and though the stud, then put a long bolt into the hole , the shock head will grab the bolt and hold from turning.

If these options don't work, it is time to get the hacksaw out and cut the stud.

You should let the air out of your airbags when it is up on stands.

Carl Harr : Driver NASCAR Pro Series #2
1978 Gadabout-Restoring
1978 Palm Beach
1976 Glenbrook
Prevost Featherlite H3-45

[Updated on: Fri, 18 September 2015 21:10]

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Re: Looking for help with shock removal [message #287540 is a reply to message #287536]

Fri, 18 September 2015 21:12

peter bailey

Messages: 367
Registered: March 2009
Location: Gawler, South Australia

Karma: 0

Senior Member

You should find yourself a piece of steel (ideal is piece of leaf spring) 12" x 3" x 3/8".
This length of steel is slid through the gap in the bogie box under the bogie arms and the base of the box. Then jack up the bogie as you have this steel plate takes the load off the shockers and air bag by not allowing the bogie arms to hang.
Peter Bailey
from Ozy (Aussie)

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Re: [GMCnet] Looking for help with shock removal [message #287544 is a reply to message #287536]

Fri, 18 September 2015 21:38

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Travis,

1) Vent the pressure out of the air bags.
2) Using a thin metal cutting disc in an angle grinder cut through the center of the bolt that is retaining the top of the shock
until the nut splits into two pieces.
3) Remove the bolt.
4) Spray the nuts / bolts on all the other shocks with penetrating oil and allow it to soak in for a couple of days.
5) Remove the other three shocks.

Reference Maintenance Manual X-7524 / Section 4 - Rear Suspension / Page 4-12 / Shock Absorber Removal and Page 4-29 / Shock
Absorber Installation.

Reference Parts Book 78Z / Section 14 / Page 14-2 & 3 to see the sequence the shock retaining parts are installed.

If you don't have an angle grinder you can buy a cheap one here:
http://www.harborfreight.com/4-12-in-43-amp-angle-grinder-69645.html

The disks are available here: http://www.harborfreight.com/4-12-in-metal-grindingcut-offflap-wheel-assorted-set-10-pc-61178.html

Regards,
Rob M.
The Pedantic Mechanic

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of travis@owenscanada.com
Sent: Saturday, September 19, 2015 11:47 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Looking for help with shock removal

First thing's first... here's a picture...anything look out of whack?

The left shock is upside down. NO idea what historical event caused that one....

Anyways when I try to turn the top nut on that side it just spins the whole bolt. There doesn't seem to be anything on the backside
to grab onto.
How does this come off?

The hardware is very different from the other side...I tried that but I couldn't get the nut to budge. The entire assembly moved
good when I applied
a little torque. It looks like it was spray painted so it might just need a bit more torque...but I thought I'd check in here first
to figure out for
sure how to remove them. The bottom nuts loosen easy enough.

Also, these shocks look to be quite compressed...I imagine I need to jack the bogie up a bit to decompress them? The new KYB shocks
I want to put on
are significantly longer.

Any insight greatly appreciated!!!!!!!
--
75 Glenbrook

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Looking for help with shock removal [message #287550 is a reply to message #287544]

Sat, 19 September 2015 05:37

Joe Weir

Messages: 769
Registered: February 2013
Location: Columbia, SC

Karma: 7

Senior Member

You should have one of these if you are going to work on 40 yr old fasteners...

http://ecx.images-amazon.com/images/I/41au92chKPL._SY355_.jpg

split the nut and get on with life! The shock is toast anyway.

76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center... Columbia, SC.

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Re: [GMCnet] Looking for help with shock removal [message #287566 is a reply to message #287550]

Sat, 19 September 2015 14:33

trapper

Messages: 52
Registered: April 2015
Location: Saskatchewan, Canada

Karma: 0

Member

Joe Weir wrote on Sat, 19 September 2015 05:37

You should have one of these if you are going to work on 40 yr old fasteners...

http://ecx.images-amazon.com/images/I/41au92chKPL._SY355_.jpg

split the nut and get on with life! The shock is toast anyway.

OK....that's pretty cool. Didn't know such a tool existed.

I went at the bolts with the impact wrench and ultimately they all spun out for me.

Thanks for the advice all.... have 2 installed...another 2 to go.

On a side note...the upside down shock was a complete mess...it had been collecting water and rusting inside something fierce.

75 Glenbrook

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