Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 11-15-2008, 04:42 PM
Jim88554 Jim88554 is offline
Freshman User
 
Join Date: Mar 2007
Posts: 28
Jim88554 is starting off with a positive reputation.
Exclamation 4.6 romeo timing chain alignment

doing valve job on '97 F-150 4wd, Haynes manual is confusing.

According to manual:

Removal:
"When positioning the engine at TDC for number 1 piston, look at the keyways on the camshaft sprockets. Use a square to insure that each keyway is at 90-degrees to the valve-cover mounting surface of the cylinder head. then install the camshaft positioning tool on the rear of the camshafts."

Installation:
"The two timing chains should each have two bright or colored links.The links seperate the chain into two equal halves. If no colored links are present, lay the chain down, make a paint mark on a link, then count links and make another paint mark halfway around the chain"

"Install the left timing chain, aligning its colored link to the mark on the crankshaft sprocket and to the timing mark on the camshaft sprocket.
Install the right timing chain, and its crankshaft sprocket. When both chains are installed and all colored links and marks aligned, the keyways should be at 90-degree angle to the valve-cover mounting surface of the cylinder head."

Actual:

Removal:
Did not use the camshaft positioning tool but did insure that keyways were at 90-degrees to the valve-cover mounting surface of the cylinder head. After I took the tensioners off the chain was still under tension due to valve spring pressure, and when I took the chain off, the camshafts rotated slightly.

Assembly:
Put camshaft at near 90-degrees when heads were reassembled.
Put chain mark on crankshaft sprocket mark and placed sprocket on crankshaft. Crankshaft sprocket mark at 6:00.
Put camshaft sprocket on but when keyway is at 90-degrees the dimple in sprocket will not line up with mark on chain.
The dimple is at about 4:00 (keyway at 12:00) mark lines up with keyway but no tension is on chain. I can rotate the camshaft a tooth or two to put chain back under slight tension (so keyway is at 90-degree angle to the valve-cover mounting surface of the cylinder head) but marks do not line up.

How should I proceed? any and all help will be greatly appreciated.
Reply With Quote
  #2  
Old 11-17-2008, 08:09 PM
Gevans17 Gevans17 is offline
Posting Guru
 
Join Date: Oct 2006
Posts: 1,082
Gevans17 is gaining momentum as a positive member of FTE.
timing info

I might be able to help if you enable your private messages
Reply With Quote
  #3  
Old 11-17-2008, 09:13 PM
tsedgar tsedgar is offline
Junior User
 
Join Date: Feb 2008
Location: MN
Posts: 53
tsedgar is starting off with a positive reputation.
Don't you need 25 post before you get this option?
Reply With Quote
  #4  
Old 11-18-2008, 05:54 AM
Jim88554 Jim88554 is offline
Freshman User
 
Join Date: Mar 2007
Posts: 28
Jim88554 is starting off with a positive reputation.
dont know how to enable private messages
Reply With Quote
  #5  
Old 11-18-2008, 07:21 PM
Gevans17 Gevans17 is offline
Posting Guru
 
Join Date: Oct 2006
Posts: 1,082
Gevans17 is gaining momentum as a positive member of FTE.
enable private messages

Quote:
Originally Posted by tsedgar View Post
Don't you need 25 post before you get this option?
didnt know that!
Reply With Quote
  #6  
Old 11-19-2008, 08:15 AM
Jim88554 Jim88554 is offline
Freshman User
 
Join Date: Mar 2007
Posts: 28
Jim88554 is starting off with a positive reputation.
Continued with assembly, placing keyways at 90-degress to valve cover mounting surface and noticed that timing marks on camshaft were 180-degrees out, turned engine over by hand several rotations, and had no interferance. Since the camshaft rotates 180-degrees for every 360-degrees of crankshaft rotation I believe I will have no problems
Reply With Quote
Old 11-19-2008, 08:15 AM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)

Tags
180, 46, 46l, alignment, cam, camshaft, chain, f150, ford, positioning, put, romeo, tdc, timing, tool

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help timing!! MoJensen87 Expedition & Navigator 10 08-06-2014 02:02 PM
2001 Ford F-150 4.6 Romeo Timing Chain Replacement Dark Green F-150 1997 - 2003 F150 0 05-13-2014 03:44 PM
2001 Navigator 5.4l 32v intech V8 timing 01ArizonaGator Modular V8 (4.6L, 5.4L) 8 04-21-2013 12:26 AM
Timing chain for Expedition molin3 Expedition & Navigator 3 02-22-2009 09:17 PM
4.6 timing chain alignment Jim88554 1997 - 2003 F150 3 11-17-2008 05:39 AM



All times are GMT -5. The time now is 05:11 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup