How to remove gearbox?

Transmission, clutch, chains and belts
Forum rules
Please do not start new topics here, but here: New Panhead and Flathead topics
Post Reply
Henrik_K
Posts: 18
Joined: Thu Jul 22, 2010 8:01 am
Bikes: FL '56
XLH '65
Location: Copenhagen

How to remove gearbox?

#1

Post by Henrik_K » Fri Jul 30, 2010 10:48 pm

I've got a beltdrive on my Pan. If I want to remove the gearbox - should I first dismantle the clutch or?

Beltdrive is new to me - How do you adjust the belt to the right tension? - There's no tensioner like on a chain?

Thanks



Bigincher
Posts: 2818
Joined: Tue Dec 18, 2007 2:10 pm
Bikes: 1941/59 EL
1952 FL
1977 FLH
1994 Fatboy

Re: How to remove gearbox?

#2

Post by Bigincher » Sat Jul 31, 2010 2:28 am

Since no-one has answered you, I'll jump in here..........
First of all, if you don't have a factory Service Manual for your motorcycle, please GET ONE before you go off half-cocked. Lonnie at Antique Cycle has them and they are not expensive. ( http://www.antiquecyclesupply.com/serviceManuals.htm" onclick="window.open(this.href);return false; )
In the manual, you will find the procedure to remove the transmission, which starts with removing the outer primary cover, the primary drive assembly (which in your case is a belt) which should be removed all at once (clutch hub, engine drive sprocket, and belt) after the clutch internals are removed. (There is a 'shortcut' where you can leave the clutch hub on the transmission mainshaft and remove the transmission with the inner primary cover and clutch hub intact with the transmission, but let's just forget that for now.)
You will also see in the manual that the method for adjusting the primary drive (chain or belt) is to loosen the 5 transmission mounting points (4 nuts, 1 bolt) and slide the transmission fore or aft to achieve the correct tension on the primary drive belt (or chain). This will, or course, require adjustment of the final drive chain, once the primary drive is secured in the proper location.
Often times with a belt drive, the transmission needs to be fully forward, and sometimes the belt is still so tight that the slots on the transmission mounting plate need to be slightly elongated to allow the trans to move forward just a bit more. Hope this helps.

(whew)

Panshovevo
Posts: 293
Joined: Sun Jul 25, 2010 5:18 pm
Bikes: '50 F model, '76FX/L, '96 96" FXDWG
Location: SE Florida
Contact:

Re: How to remove gearbox?

#3

Post by Panshovevo » Sat Jul 31, 2010 4:02 am

viewforum.php?f=69" onclick="window.open(this.href);return false;

Henrick, above is a link for the panhead service manual in the web site library. You can download the whole thing, or view just the sections you need.
If you are accustomed to modern manuals, like I was, the panhead manual may seem a bit primitive and incomplete. However, there is a lot of good information there.
John
Last edited by Panshovevo on Sat Jul 31, 2010 4:51 am, edited 2 times in total.

FlatHeadSix
Moderator
Posts: 2682
Joined: Sun Jun 06, 2004 5:14 pm
Bikes: '31 VL, '34 VD, '45 WLA, '47 WL, '49 FL, '51 WL, '58 ST (Hummer), '71 GE (Servi)
Location: Lonoke, Arkansas

Re: How to remove gearbox?

#4

Post by FlatHeadSix » Sat Jul 31, 2010 4:31 am

Thanks John, you beat me to it. That's what this forum is all about; helping each other out.

But sometimes the manual just isn't enough, that's when we need the "bottom line", short and sweet answers like bigincher posted above. Its all good, thanks guys!

mike

Henrik_K
Posts: 18
Joined: Thu Jul 22, 2010 8:01 am
Bikes: FL '56
XLH '65
Location: Copenhagen

Re: How to remove gearbox?

#5

Post by Henrik_K » Sat Jul 31, 2010 7:34 pm

Actually, I already bought the Clymer for my model. However - I find the pictures and text hard to follow - maybe cause english is not primary language...

Anyway; thanks for your feedback - no need for a forum if the manuals were sufficient.

Sir_Rat
Posts: 285
Joined: Sun Nov 01, 2009 10:10 am
Bikes: '37 UL, '79 Frankenstein, '88 Sporty
Location: Oahu Hawaii

Re: How to remove gearbox?

#6

Post by Sir_Rat » Mon Aug 09, 2010 7:24 am

Henrik K...I find the pictures and text hard to follow also...and English is my only language :oops:

Aloha....Mike

Post Reply

Return to “Transmission, Clutch, Belt & Chains”