Can someone explain the swivel pin shimming process? I am trying to put the front axel back together with all new seals and gaskets but one of the swivel balls is giving me trouble. When i took them apart last winter both sides had a lot of shims in them. I put one back together using the same shims as i took out and it works fine, the other not so much. It is very tight to turn the swivel ball even after i took most of the shims out. Does one normally replace the same amount of shims when rebuilding?
swivel pin shims question
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swivel pin shims question
1970 Series IIA 109 EX-MOD
1971 Series IIA 109 EX-MOD
1982 Mercedes 300TD
1989 RRC
1993 D110
1994 RRC LWB
1995 RRC SWB Brooklands Edition
1995 RRC LWB
1995 RRC LWB
1995 Disco
1996 GMC 2500 Suburban
1996 Disco
1997 Disco
2001 RR P38
2005 LR3 HSE
2006 RR HSETags: None -
Not me. I always re-shim to achieve the proper amount of preload. Follow the instructions in the service manual and you should be fine. -
Think of the top pin as a wedge shape, point down. If you add shims it raises the wedge, creating a looser fit, creating less preload. If you remove shims it lowers the wedge, tighter fit, more preload. If your assembly is tight, add shims. Common mistakes are people don't tighten the bolts (laziness) or have installed the seal prior to checking the preload.Jason
"Clubs are for Chumps" Club presidentComment
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thanks for clearing that up for me, i had it bass akwards. Makes sense now. One more question, what wears out over time to require more or less shimming?1970 Series IIA 109 EX-MOD
1971 Series IIA 109 EX-MOD
1982 Mercedes 300TD
1989 RRC
1993 D110
1994 RRC LWB
1995 RRC SWB Brooklands Edition
1995 RRC LWB
1995 RRC LWB
1995 Disco
1996 GMC 2500 Suburban
1996 Disco
1997 Disco
2001 RR P38
2005 LR3 HSE
2006 RR HSEComment
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The top pin and bushing usually wear out which is what creates too little pre-load.Jason
"Clubs are for Chumps" Club presidentComment
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ok, im starting to understand all this now. Is there a way to adjust for acceptable preload with out having a spring scale?
thanks1970 Series IIA 109 EX-MOD
1971 Series IIA 109 EX-MOD
1982 Mercedes 300TD
1989 RRC
1993 D110
1994 RRC LWB
1995 RRC SWB Brooklands Edition
1995 RRC LWB
1995 RRC LWB
1995 Disco
1996 GMC 2500 Suburban
1996 Disco
1997 Disco
2001 RR P38
2005 LR3 HSE
2006 RR HSEComment
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A fish scale is cheap and will do the job just fine. I guess if you do it enough you could do it by feel. I just use my $11 fish scale though.Jason
"Clubs are for Chumps" Club presidentComment
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I found that the big seal adds an insignificant amount to the preload - almost indetectible (at least with Mr. Fish Scale). Maybe half pound or less. This was when I rebuilt my front end with new balls, seals, etc. and had everything lubed up good.
Just my $0.02.Comment
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Another thing getting the preload set correctly will help is the dreaded "death wobble". I've seen instances where all kinds of parts were replaced with no significant improvement then the kingpin preload was set and like magic, no more "wobble".Gale Breitkreutz
'03 Disco
'74 Series III 88 (sold, 4/13)
'47 CJ2AComment
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IIRC the manual calls for setting the preload without the large seal in place (just hanging there). This eliminates its extra drag to determine the proper value, I set mine at the high end of the tolerance so once it wears in, your still in the ball parkComment
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That said, always follow the green bible if you can....................Comment
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I've got a swivel pin rebuild on my site if you still have ????
www.singingcamel.com[
QUOTE=masonater;67429]thanks for clearing that up for me, i had it bass akwards. Makes sense now. One more question, what wears out over time to require more or less shimming?[/QUOTE]Comment
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