Torque - Transmission to bell housing

bl5211a · Post by **bl5211a** » Sat Sep 14, 2013 9:59 pm

Hunting around for the correct torque for mounting the transmission to bell-housing (4 bolts).

1955 M170.

Thanks,
Brian

Post by **wesk** » Sat Sep 14, 2013 10:59 pm

Torques not listed in the manuals for any specific applications are then selected from the standard torque chart using that type fastener and thread pitch / size.

I have the answers to this question loaded in my photo album.

This is the handiest list from the Willys/Kaiser SM1004 civvy CJ service manual.

There are dozens of Gade 5 through grade 8 automotive torque charts scattered all over the web. I have a couple loaded on my photo album.
http://www.willysmjeeps.com/v2/modules. ... php&page=9

Go there and review the standard industry toque data and formulas before selecting the torque you should use. If you are unsure of the bolt diameter, material and/or thread pitch the information is usually in the ORD 9 parts manual for your jeep.

Here's an example:

Keep in mind when using our photo albums the photos are stored normally in three sizes. The thumb nail, the intermediate size and the full size. When you click on a thumb nail the intermediate size pops in view. When you click on the intermediate size the full size pops into view.

bl5211a · Post by **bl5211a** » Sun Sep 15, 2013 7:13 am

thanks - i printed these. I will use standard torque for grade 5

Post by **wesk** » Sun Sep 15, 2013 10:36 am

Two of those bolts are suppose to be shouldered dowel bolts to center the bell.

bl5211a · Post by **bl5211a** » Sun Sep 15, 2013 6:17 pm

What side should the dowell bolt head be on? The bell or the engine block?

Post by **wesk** » Sun Sep 15, 2013 9:53 pm

All the 3/8" bolts accept the top two are installed from the front towards the rear. The bottom left has one bolt hole that is reserved for the stay cable and it's nut goes on the forward side of the bell adapter plate.

3/8" bolts are:

7371700 - 3/8-24NF-2x2 1/2" shouldered dowel bolts 2 ea.
123534 - 3/8-24NF-3x2 1/8" 3 ea Early bell, 4 ea late bell
123825 - 3/8-24NF-3x2 5/8" 2 ea

bl5211a · Post by **bl5211a** » Mon Sep 16, 2013 8:16 pm

Thanks for info

bl5211a · Post by **bl5211a** » Tue Sep 17, 2013 4:04 pm

Hello :

Question about throwout bearing fork lubricant and input shaft lubricant.

Is anti-seize lubricant ok to use?

bl5211a · Post by **bl5211a** » Tue Sep 17, 2013 4:07 pm

hey wes; i believe the photo you posted is m38, not m38a1/m170. aren't dowels on the side not the top.

Post by **wesk** » Tue Sep 17, 2013 8:31 pm

Which two holes do your dowel bolts fit in? They should only fit the two top or the two side ones that go into the block. The bottom illustration is late M38 and All M38A1/M170. I just stuck my dowel bolts in the two holes that they would fit in.

bl5211a · Post by **bl5211a** » Tue Sep 17, 2013 9:00 pm

They fit the sides. Seems to be fine.

Post by **wesk** » Tue Sep 17, 2013 9:47 pm

I'll have to correct the photo. I always used black moly grease real thin on both. The pilot bushing should be an oilite bushing and pre-soaked in 30 weight engine oil.

Post by **wesk** » Tue Sep 17, 2013 10:35 pm

Photo is corrected

bl5211a · Post by **bl5211a** » Wed Sep 18, 2013 5:11 am

I guess molly would be best for clutch fork pivot..?

Post by **wesk** » Wed Sep 18, 2013 8:22 am

When I said moly on both the both were the input shaft where it passes thru the clutch disc splines and the pivot fork.