'79 GL1000 transmission cover screw removal question

Discuss everything about Honda GoldWing. Feel free to ask any question related to GoldWing.

Moderators: Oldewing, CYBORG, robin1731, Forum Moderators

Post Reply
yawjansen
Cast Iron Member
Cast Iron Member
Posts: 68
Joined: Fri Jul 24, 2020 12:22 pm

'79 GL1000 transmission cover screw removal question

#1

Post by yawjansen »

Hey all! Looks like I'll be doing a transmission cover swap due to a stripped oil drain. Before I go and strip all those ancient, rust welded on, JIS screw heads, I wanted to see if any of you have an best practices or advice? They are soaking in PB blaster at the moment. One of the biggest issues I see is that I can't square up to the run of top ones due to them being pretty much in line with the frame...
Anyway, hoping to not have to drop motor from frame! Hahah!

Thanks
Pat
20210822_153222.jpg
20210822_153222.jpg (91.74 KiB) Viewed 564 times
1979 GL1000 Early Stages of Rebuild 08/01/2020 First Shot at it!
cfairweather
Silver Member
Silver Member
Posts: 754
Joined: Sun Apr 13, 2014 10:37 pm
Location: Cheyenne, Wyoming

Re: '79 GL1000 transmission cover screw removal question

#2

Post by cfairweather »

I use an impact tool with a #3 bit. Make sure the bit is in good condition. Use a wobble extension on the ones where the frame slightly gets in the way. If you don't have an impact tool, at least use a hammer and a screwdriver and smack the screw a couple of times. This will make it easier to turn.
User avatar
gltriker
Honored Life Member
Honored Life Member
Posts: 5199
Joined: Fri Sep 24, 2010 9:11 pm
Location: central NY State

Re: '79 GL1000 transmission cover screw removal question

#3

Post by gltriker »

I don't know which number JIS screwdriver bit is appropriate for these particular screws. cfairweather indicates #3.

Although I haven't purchased an ' Impacta ' version of a Vessel JIS screwdriver, or a comparable unit to recommend from personal disassembly experience, this one might be worth taking a look at.

https://www.amazon.com/Vessel-125943-P3 ... TTSE&psc=1
Cliff ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
cfairweather
Silver Member
Silver Member
Posts: 754
Joined: Sun Apr 13, 2014 10:37 pm
Location: Cheyenne, Wyoming

Re: '79 GL1000 transmission cover screw removal question

#4

Post by cfairweather »

It is always wise to use JIS screwdrivers on these screws. Make sure your impact bit fits perfectly as that is the important part of removing these specific screws. If you attempt to simply unscrew these without hitting them with a hammer, expect them to strip out. The Vessel screwdrivers are high quality but the impact feature on some of these don't work as good as a regular impact tool. My favorite set of JIS screwdrivers are made by KTC.
Here is a link:
https://www.ebay.com/itm/393194375220?h ... SwEbhgT~Tn

Both KTC and Vessel are excellent brands from Japan.
User avatar
pidjones
SUPER BIKER!!!!
SUPER BIKER!!!!
Posts: 3275
Joined: Wed May 22, 2013 4:06 pm
Location: East TN

Re: '79 GL1000 transmission cover screw removal question

#5

Post by pidjones »

JIS impact drivers would be a wise investment. Also new screws to go back on instead of the already weakened ones. Actually, if I have to go into this it will probably prompt an engine removal. I'd rather pull the engine that wrestle a broken bolt in a blind position.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
yawjansen
Cast Iron Member
Cast Iron Member
Posts: 68
Joined: Fri Jul 24, 2020 12:22 pm

Re: '79 GL1000 transmission cover screw removal question

#6

Post by yawjansen »

Hey all! Thanks for all of the info! Looks like a set of impact JIS drivers will be the first order of business. I have impact normal Philips, they've done on easy to access and less corroded jobs. Time to step up a notch. And yeah, I'll pull the engine if I have too. Am planing on doing so over winter but would like to get a little more time on her before inclimate weather sets in!
1979 GL1000 Early Stages of Rebuild 08/01/2020 First Shot at it!
User avatar
Pony Ruiz
Platinum Member
Platinum Member
Posts: 1923
Joined: Sun Oct 25, 2009 7:17 pm
Location: Seatown - WA

Re: '79 GL1000 transmission cover screw removal question

#7

Post by Pony Ruiz »

Before I knew of or had a set of JIS screwdrivers, I had to resort to the hammer and chisel method on that cover. I was able to remove most with a regular screwdriver, but there were a few that didn't wanna come out - esp. after i stripped out the phillips head.
So I got out one of my 1/4" beater wood chisels and gave the screw head whacks in the right direction. They all came out nicely.
None broke off, you are just left with a slightly mangled chisel and screw head - one you will toss anyway. I don't remember where I got this tip but it has come in handy many times.
1978GL1000 naked - kinda sadly gone. no bike at the moment.

"The greatest shortcoming of the human race is our inability to understand the exponential function." Albert A. Bartlett.
User avatar
skydog
Platinum Member
Platinum Member
Posts: 1998
Joined: Fri Aug 05, 2005 12:32 am
Location: black hills of dakota

Re: '79 GL1000 transmission cover screw removal question

#8

Post by skydog »

Robin 1731 sells a bolt kit just for this application.They work great ,just use a little anti-sieze upon reassembly.If you look below in similar topics there is a direct link.
75 naked "Blue Streak" gone
78 fairing bags "Brownie" 4 sale
80 standard project 4 sale
84 Standard, Vetter bags "Horse with no name"
85 Interstate gone
84 aspy
86 aspy
"When the day comes to settle down,who's to blame if you're not around?You took the long way home"
Shadowjack
Silver Member
Silver Member
Posts: 688
Joined: Fri May 26, 2017 11:07 am

Re: '79 GL1000 transmission cover screw removal question

#9

Post by Shadowjack »

Pony Ruiz wrote: Mon Aug 23, 2021 12:37 am Before I knew of or had a set of JIS screwdrivers, I had to resort to the hammer and chisel method on that cover...

I also did this, back when I didn't even have metric tools. On a 305 Honda. But there was usually enough head left to re-use them... :lol:
User avatar
Whiskerfish
President
President
Posts: 37500
Joined: Thu Feb 16, 2006 9:34 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/whiskerfish/
Location: Norfolk Va

Re: '79 GL1000 transmission cover screw removal question

#10

Post by Whiskerfish »

skydog wrote: Mon Aug 23, 2021 2:34 am Robin 1731 sells a bolt kit just for this application.They work great ,just use a little anti-sieze upon reassembly.If you look below in similar topics there is a direct link.
Yep. Use those regularly. Great improvement over the JIS Screws
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
"Yea I do dance awkwardly, and I am having more fun than you" Taylor Swift
2008 GL1800 IIIA "TH3DOG"
1984 GL1200 Standard
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike

Psst. oh and by the way CHANGE YOUR BELTS!!!!
Don R
Silver Member
Silver Member
Posts: 794
Joined: Thu Feb 26, 2015 2:53 am
Location: West Central Illinois

Re: '79 GL1000 transmission cover screw removal question

#11

Post by Don R »

I like the snap on #3 bit 3/8" drive socket. Usually when the screw comes out it's sticking on the end of the bit. I use a small battery impact with it and a wobble extension rather than a universal.
I've been corrected many times that that bit is not jis. It apparently does not know that and I don't care. I do use a good old screwdriver to give them a smack with a hammer first.
78 GL 1000, 70 CB750 sandcast, 70 CB836 hot rod, 1124cc 750 dragbike resto project.
You don't need a weatherman to know which way the wind blows.
User avatar
Whiskerfish
President
President
Posts: 37500
Joined: Thu Feb 16, 2006 9:34 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/whiskerfish/
Location: Norfolk Va

Re: '79 GL1000 transmission cover screw removal question

#12

Post by Whiskerfish »

Yes in a pinch a #3 phillips works well on those. just make sure to keep plenty of pressure on it. If you can get at them a # 3 impact is almost always successful. That one up behind the frame cross member can be a bugger.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
"Yea I do dance awkwardly, and I am having more fun than you" Taylor Swift
2008 GL1800 IIIA "TH3DOG"
1984 GL1200 Standard
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike

Psst. oh and by the way CHANGE YOUR BELTS!!!!
digger
Billet Alum. Member
Billet Alum. Member
Posts: 223
Joined: Mon Oct 04, 2010 3:42 pm
Location: Ashland Ohio

Re: '79 GL1000 transmission cover screw removal question

#13

Post by digger »

If a previous owner has buggered up the cross slots a little I like to use valve lapping compound on it, the grit gives a better bite to the bit. And I always use JIS now, I didn’t know any better 30 years ago.
1975 GL1000
yawjansen
Cast Iron Member
Cast Iron Member
Posts: 68
Joined: Fri Jul 24, 2020 12:22 pm

Re: '79 GL1000 transmission cover screw removal question

#14

Post by yawjansen »

Looks like a wobble extension and a #3 impact driver bit are on order as well! Great tip on the lapping compound Digger! Yeah, this and the rear brake master have caused the most corroded/stuck thus far! I'm trying to not drop the engine until later this year when I do full cleaning and resto...
1979 GL1000 Early Stages of Rebuild 08/01/2020 First Shot at it!
User avatar
LuckyEddie
Billet Alum. Member
Billet Alum. Member
Posts: 217
Joined: Mon Jun 22, 2009 7:42 am
Location: Middleville, MI.

Re: '79 GL1000 transmission cover screw removal question

#15

Post by LuckyEddie »

In a pinch the driver in the tool kit is ... JIS.
On both of my wings I replaced the bolts with those from the GL1100 which are 8mm socket head.
You may be able to loosen all motor mount points, remove those in the front and lower the front on a jack to get better access.
LuckyEddie

1978 GL1000 Supercharged (Avitar)
1976 GL1000
1980 XS1100LG
1982 XV750J
1981 XV920RH
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “GoldWing Tech Discussions”