Timing chain special tool 6635 - DodgeForum.com

Go Back  DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Reload this Page > Timing chain special tool 6635
2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Timing chain special tool 6635


Old 10-14-2011, 01:06 PM
adrenaline junky
adrenaline junky is offline
Thread Starter
Join Date: Jul 2010
Posts: 59
Default Timing chain special tool 6635

In the manual It says to use special tool 6635 to align and reinstall the timing belt cover. Where do I get such a tool, Dealer?

Also, I'm pretty sure not everyone goes and buys a tool (I may be wrong). A question for those that don't use the tool. How else do you align it? Can you reach all the bolts on the cover if you press the balancer on first? If not, press it on to align and tighten most bolts, then remove and tighten the rest?

First time doing this and just looking for answers before I get in there.

Thank you.
Reply With Quote
Old 10-14-2011, 02:09 PM
HeyYou's Avatar
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 47,753

Aligning tool? I have never used one..... Put the cover in place, thread in a few of the bolts that DON'T go thru the water pump, (including the two from the bottom, for the oil pan....) run those snug.... then install the water pump, and tighten everything to spec. THEN put the balancer on.
Reply With Quote
Old 10-14-2011, 10:18 PM
adrenaline junky
adrenaline junky is offline
Thread Starter
Join Date: Jul 2010
Posts: 59

In the dodge manual, under the section for timing belt cover, page 9-169 it shows tool 6635. You put the seal on the tool, place it over the crankshaft, tap it into the timing chain cover and then tighten the cover down. It aligns the inner part of the seal on the tool so when you slip in the vibration dampener it aligns perfectlu with the seal.

Without it you could tighten down the cover off center of the crank and then the seal might leak.

Am I over thinking it?
Reply With Quote
Old 10-14-2011, 10:22 PM
zman17's Avatar
zman17 is offline
Retired Moderator - RIP
Join Date: May 2008
Location: NH
Posts: 18,729

Originally Posted by adrenaline junky View Post

Am I over thinking it?
Yes, a block of wood and a hammer will do the same thing. And if you have a minute, read this thread if you don't mind. https://dodgeforum.com/forum/2nd-gen...leonhardt.html
Reply With Quote
Old 10-14-2011, 10:26 PM
aim4squirrels's Avatar
aim4squirrels is offline
Join Date: Jul 2007
Location: DFW, Texas
Posts: 7,844

I've taken the timing cover off my truck a half dozen times and never used an aligning tool to reinstall. Never leaked a drop of oil from the front main seal.
Reply With Quote
Old 10-15-2011, 04:07 AM
beeker's Avatar
beeker is offline
Join Date: Dec 2009
Location: Bremerton, WA
Posts: 616

I used a short chunk of 2x4, put my seal on when the cover was off. Set it on a flat surface, lube up the seal and the cover, use the wide side of the board and tap it down evenly with a hammer.
Reply With Quote
Old 10-15-2011, 01:05 PM
gdstock's Avatar
gdstock is offline
Join Date: Jul 2011
Location: Austin, TX
Posts: 8,259

adrenaline, if yuo are concerned about the seal being centered and the bolts allowing housing to be too far to one side, I would bolt cover on and visually check that shaft is centered on shaft after cover is tightened. If not, loosen and adjust accordingly. Apply grease to balance on sealing surface prior to installation, and all should be good. Even dealer service departments do not use many of the specialty tools listed in the manual.

Last edited by gdstock; 10-16-2011 at 02:37 AM.
Reply With Quote
Old 10-16-2011, 02:34 AM
adrenaline junky
adrenaline junky is offline
Thread Starter
Join Date: Jul 2010
Posts: 59

Cool, thank you. I'll let you know how it goes.
Reply With Quote
Old 10-31-2012, 02:57 PM
LESchwartz is offline
Registered User
Join Date: Jul 2010
Posts: 22

Hi Guys,

I came across this thread while looking for info on the "6635 tool". The Miller #6635 also makes short work of aligning and installing the seal when the timing cover has not been removed from the engine. The tool was discontinued several years ago. My alternative for this use is to jimmy something up using a longer bolt and pieces from my ball joint set.

Reply With Quote
Old 10-31-2012, 07:13 PM
dhvaughan's Avatar
dhvaughan is offline
Hall Of Fame
Join Date: Jul 2006
Location: Gainesville, Ga.
Posts: 12,205

i thought the purpose of the tool is to align the timing cover PERFECTLY CONCENTRIC with the crankshaft so that you get a good seal. however - its not like you've got a lot of play in the timing cover...

i did mine having never heard of this tool, and it turned out fine.

if you wanted to be clever, you could slide the balancer onto the crank and into the cover before torquing down the timing cover.

Last edited by dhvaughan; 10-31-2012 at 10:32 PM.
Reply With Quote

Related Topics
Thread Starter
Last Post
2nd Gen Ram Tech
07-23-2017 07:22 PM
1st Gen Ram Tech
08-19-2015 06:35 PM
Dodge Ram Van
07-13-2015 07:59 PM
2nd Gen Ram Tech
07-13-2015 10:46 AM
marshall XS
07-09-2015 05:24 AM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 04:02 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: