ZF trans over haul

Get answers to Bronco-related technical issues.

ZF trans over haul

Postby horseplay » Mon Sep 18, 2017 6:40 pm

Hey guys I was wondering if any of you guys have experience with rebuilding the ZF 5 speed & how difficult are they to do.
horseplay
Official CCB Member
Official CCB Member
 
Posts: 408
Joined: Mon Jan 21, 2013 7:24 pm
Location: Grand Junction CO

Re: ZF trans over haul

Postby phyler » Mon Sep 18, 2017 7:48 pm

horseplay wrote:Hey guys I was wondering if any of you guys have experience with rebuilding the ZF 5 speed & how difficult are they to do.
Digger just rebuilt his not too long ago. He had a lot of the steps in a thread on here. If I remember correctly, he had to make a tool to get the preload correct.

Sent from my Venue 8 7840 using Tapatalk
1975 Ranger Edition that I've had longer than I've been without it.
phyler
CCB Admin
 
Posts: 1202
Joined: Sat Oct 02, 2010 8:41 pm
Location: Erie

Re: ZF trans over haul

Postby Digger » Mon Sep 18, 2017 8:45 pm

It's not a hard transmission to work on, in fact I found the layout to be very serviceable.

That said, a full rebuild takes a handful of special tools. Here is a good online tutorial:
https://www.oilburners.net/threads/zf5-s5-47-transmission-rebuild.62490/

There are .pdf's online of the S5-42 / 47 service manual. I would suggest grabbing a copy and read through it to understand the scope of the job.

I haven't tore mine all the way down, but far enough to replace some bad bearing and seals.
Cummins R2.8 diesel, ZF5, AtlasII, HP44/BB9, ARBs, coiled / linked suspension, 37" KO2s, full cage, bumpers, etc.
Build Thread: http://www.coloradoclassicbroncos.com/viewtopic.php?f=3&t=5420

Average 23.5 mpg, Best tank: 25.1 mpg
User avatar
Digger
Official CCB Member
Official CCB Member
 
Posts: 1276
Joined: Fri Jun 21, 2013 7:53 pm

Re: ZF trans over haul

Postby Jesus_man » Tue Sep 19, 2017 8:28 am

Mine was easy! Pulled it, dropped it off at a shop and picked it up a week later! For me it just made good sense to do this and I found a great shop that did it for a reasonable price.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
User avatar
Jesus_man
Official CCB Member
Official CCB Member
 
Posts: 5987
Joined: Thu Nov 11, 2010 9:36 am
Location: California

Re: ZF trans over haul

Postby horseplay » Tue Sep 19, 2017 5:36 pm

Thanks Digger that's a good start I will do more to educate myself on the process. I think I have all the pullers required.
horseplay
Official CCB Member
Official CCB Member
 
Posts: 408
Joined: Mon Jan 21, 2013 7:24 pm
Location: Grand Junction CO


Return to General 4x4 Technical

Who is online

Users browsing this forum: No registered users and 3 guests

cron