Timing 7.3 Diesel IDI engine without removing front cover? - Diesel Forum - TheDieselStop.com
7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

 
LinkBack Thread Tools Display Modes
post #1 of 13 (permalink) Old 11-12-2007, 02:02 PM Thread Starter
Junior Member
 
Join Date: Nov 2007
Posts: 6
My Photos: (0)
Feedback Score: 0 reviews
Timing 7.3 Diesel IDI engine without removing front cover?

I own a 7.3 Diesel which is needing an injection pump replacement. The pump we plan to use is from an older 6.9 engine. The Hayes manual suggests to remove the front cover, which involves removing all peripherals. Is there a reliable shortcut?
Abrooks is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 11-12-2007, 03:41 PM
Senior Member
 
Join Date: Nov 2005
Location: Arkansas
Posts: 819
My Photos: (13)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

don't take the pump gear cover off or youll be in for a fun re timing session for the gear. just pop the small plate with two bolts on the front of the cover so you can get to the three pump mounting bolts ( you will need a 12 point , 8mm socket for these )
Just take the injector line fittings off the injectors, remove the hosesand wires from the pump, remove the three 8mm bolts holding the pump to the gear, then the 9/16 nuts holding the pump to the housing, and wriggle the whole works out, injector lines and all.
Now is a good time to replace the injector return line set and orings etc.

'92 F-350 Crew Cab dually,7.3 5 spd+ 3 speed Spicer 5831 Brownie, Solid Flywheel w 12 1/4" Kevlar Clutch, ATS turbo, Hypermax Cowl induction, MS Tech Fan Clutch, Custom Aluminum Rodney Red Radiator, 4" Exhaust, Air seat, Western Hauler bed.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
RLDSL is offline  
post #3 of 13 (permalink) Old 11-12-2007, 04:05 PM
Senior Member
 
Join Date: Aug 2002
Location: near Cleveland, Ohio
Posts: 5,224
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

I've done it both ways, there is no need to remove any accessories, at least on the ones I have done. In a van I think it is easier to remove the whole tower.

IF you choose to remove the tower you must remove the little cover on the front and mark the position of the gear so you can put it back the same way.

Of course either way you must NOT turn the engine with the IP out.

1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.

Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.

*dual ASE Master Certified, Automotive, Medium & Heavy trucks*

Owner / operator, Patriot Automotive, N Ridgeville OH
Mr_Roboto is offline  
Sponsored Links
Advertisement
 
post #4 of 13 (permalink) Old 11-12-2007, 05:33 PM
Senior Member
 
Join Date: Mar 2001
Location: Grove City, Mn.
Posts: 527
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

The pump on the 6.9 is a little different in the fuel settings from the 7.3. I think I remember being told by the pump shop guy that there is more fuel at start up and there was another setting also different. If it is going on a truck you intend to use do some checking before you swap. With diesel at the price it is if you are putting a few miles on the truck it will pay to put a rebuilt pump on very quickly.


1988 F250 7.3 diesel 4x4 auto C6 now ZF5
1990 F250 7.3 diesel 4x4 auto E4OD. now ZF5
1992 F250 7.3 diesel 4x4 ZF5
Greg77 is offline  
post #5 of 13 (permalink) Old 11-13-2007, 09:40 AM
Senior Member
 
Powerstrokedogg's Avatar
 
Join Date: Oct 2003
Location: Upper pensula st.ignace , MI
Posts: 2,304
My Photos: (8)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

if you ever pull the IP gear off of the cam gear i found putting the engine at TDC and using a dentist tool to feel for the mark in the cam gear works great to get your gears lined up

2001 F-350 7.3L 4X4(ESOF) CC LWB 4R100 4X4, WIX 46637 open element air filter, Wicked Wheel, walker BTM, 203* Tstat, IC tube foil removed, coolant filter, AIH removed, 08 aluminum finned rear end cover, DP tuner 80econ 140smoke high idle,Phantom gauges, ATS transmission,ATS deep trans pan, 5 star torque converter, V10 trans cooler, 4" MRBP SS downpipe, twin 4" stacks

1989 F-250 6.9L IDI E4OD 500,000+ miles(sold)
1982 VW rabbit 1.6L diesel
2007 Arctic cat 700 diesel ATV
1975 W900 Kenworth 500 Cummins
1997 Ford school bus 5.9 cummins
Powerstrokedogg is offline  
post #6 of 13 (permalink) Old 11-13-2007, 12:30 PM
Senior Member
 
Cjhstang's Avatar
 
Join Date: Feb 2007
Location: PA
Posts: 1,115
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

Mr Roboto... what is wrong with turning the engine with the ip out? If you pull the ip out it will only line up one way since there is a notch in the ip...

If you remove the entire casing your screwed anyways lol... i know from a bad bad experience!

Then ya get to mess around with markers and TDC... sooooo much fun!

F-350 4x4 1990
-'94 overhauled 5.9 Cummins
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
P7100 Injection Pump w/ 4kgsk, 60lb valve springs, Hamilton performance cam, HX40 turbo, ARP head studs, New marine pistons and injectors, FASS system lift pump
-Homemade oem & engine harness with Dual electric fans
-'92 interior; '86 front clip; '04 Hydroboosted front and rear disc brake system; Slew of autometer gauges; dual 4.25" Stacks
-Rebuilt and upgraded my E4OD - billet input shaft and T.C. Remote mount Derale dual layer trans cooler; Baumann Trans Controller and Harness
-3" Body Lift, Cut-Out Bushwacker Fender Flares with 16x10 Eagle Alloy 186 on 33's

All done in the driveway and basement...
Cjhstang is offline  
post #7 of 13 (permalink) Old 11-13-2007, 01:18 PM
Senior Member
 
Join Date: Aug 2002
Location: near Cleveland, Ohio
Posts: 5,224
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cjhstang</div><div class="ubbcode-body">Mr Roboto... what is wrong with turning the engine with the ip out? If you pull the ip out it will only line up one way since there is a notch in the ip...

If you remove the entire casing your screwed anyways lol... i know from a bad bad experience!

Then ya get to mess around with markers and TDC... sooooo much fun! </div></div>

You turn your replacement IP to match the gear orientation. You don't take a distributor out then put it back in any old way and expect the motor to run do you?

You will ONLY have problems if you do not mark where the gear is oriented or if you go turning the motor (changing the gear orientation).

There is no reason why changing out an IP should be anything more than a 40 minute job and can be done safely and easily either removing the tower or not. Removing the tower complete is actually easier because you don't have the lines hanging up on things. The downside is you have to re-seal the tower to the engine.

1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.

Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.

*dual ASE Master Certified, Automotive, Medium & Heavy trucks*

Owner / operator, Patriot Automotive, N Ridgeville OH
Mr_Roboto is offline  
post #8 of 13 (permalink) Old 11-19-2007, 07:38 PM Thread Starter
Junior Member
 
Join Date: Nov 2007
Posts: 6
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

The pump is already out with the engine at TDC or maybe near TDC. The dental pick idea seems the best for me. Can you measure TDC with the glow plug out? I haven't checked the haynes manual yet. What do you mean "removing the tower"?
Abrooks is offline  
post #9 of 13 (permalink) Old 11-19-2007, 09:34 PM
Senior Member
 
Join Date: Aug 2002
Location: near Cleveland, Ohio
Posts: 5,224
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

OK.

DO NOT rotate the motor or the removed IP.

Did you take the IP out by itself (unbolt the 3 bolts from the gear)? If so, you just rotate the replacement IP to match and bolt it back up.

If you have removed the 4 bolts that hold the tower without marking the gear orientation then you are going to have problems. Most of the time during removal you will end up turning the gear and IP, which is why you have to mark it first.

1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.

Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.

*dual ASE Master Certified, Automotive, Medium & Heavy trucks*

Owner / operator, Patriot Automotive, N Ridgeville OH
Mr_Roboto is offline  
post #10 of 13 (permalink) Old 11-19-2007, 09:57 PM
Senior Member
 
Powerstrokedogg's Avatar
 
Join Date: Oct 2003
Location: Upper pensula st.ignace , MI
Posts: 2,304
My Photos: (8)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

Mr roboto is right, pulling the top timing cover or rotating the gears will give you a serious headache. i drove mine arround for 5 months 1 tooth retarded becaue i pulled the cover off with the gear. retiming it is possible witout pulling the front cover but its a serious PITA

2001 F-350 7.3L 4X4(ESOF) CC LWB 4R100 4X4, WIX 46637 open element air filter, Wicked Wheel, walker BTM, 203* Tstat, IC tube foil removed, coolant filter, AIH removed, 08 aluminum finned rear end cover, DP tuner 80econ 140smoke high idle,Phantom gauges, ATS transmission,ATS deep trans pan, 5 star torque converter, V10 trans cooler, 4" MRBP SS downpipe, twin 4" stacks

1989 F-250 6.9L IDI E4OD 500,000+ miles(sold)
1982 VW rabbit 1.6L diesel
2007 Arctic cat 700 diesel ATV
1975 W900 Kenworth 500 Cummins
1997 Ford school bus 5.9 cummins
Powerstrokedogg is offline  
post #11 of 13 (permalink) Old 11-20-2007, 02:50 AM
Senior Member
 
Join Date: Nov 2005
Location: Arkansas
Posts: 819
My Photos: (13)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Abrooks</div><div class="ubbcode-body">The pump is already out with the engine at TDC or maybe near TDC. The dental pick idea seems the best for me. Can you measure TDC with the glow plug out? I haven't checked the haynes manual yet. What do you mean "removing the tower"? </div></div>

Read Ziggsters timing article It will explain this all nicely with pictures

'92 F-350 Crew Cab dually,7.3 5 spd+ 3 speed Spicer 5831 Brownie, Solid Flywheel w 12 1/4" Kevlar Clutch, ATS turbo, Hypermax Cowl induction, MS Tech Fan Clutch, Custom Aluminum Rodney Red Radiator, 4" Exhaust, Air seat, Western Hauler bed.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
RLDSL is offline  
post #12 of 13 (permalink) Old 11-20-2007, 11:08 AM
Senior Member
 
Join Date: Aug 2002
Location: near Cleveland, Ohio
Posts: 5,224
My Photos: (0)
Feedback Score: 0 reviews
Re: Timing 7.3 Diesel IDI engine without removing front cover?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PowerstrokeDogg</div><div class="ubbcode-body">Mr roboto is right, pulling the top timing cover or rotating the gears will give you a serious headache. i drove mine arround for 5 months 1 tooth retarded becaue i pulled the cover off with the gear. retiming it is possible witout pulling the front cover but its a serious PITA </div></div>

Mine was the same way, it timed OK with the old IP but when I installed a new one it was retarded (I put in the IP without removing the tower so it was retarded the whole time). I ended up pulling the tower and moving the gear one tooth over and I was golden.

If you choose to pull the whole tower, just remove the little cover on the front and mark where the 3 bolts and dowel are in relation to the cover BEFORE unbolting anything. As long as you mark your position, the job is very easy.

I think the problem comes in because people are used to working on gassers where you can SEE where the distributor is pointed plus there is a lot more adjustment for a minor "oops". With the IDI's you can't really see which cylinder is firing plus the adjustment range is tiny.

1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.

Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.

*dual ASE Master Certified, Automotive, Medium & Heavy trucks*

Owner / operator, Patriot Automotive, N Ridgeville OH
Mr_Roboto is offline  
post #13 of 13 (permalink) Old 04-13-2019, 01:35 AM
Junior Member
 
Join Date: Jan 2019
Posts: 1
My Photos: (0)
Feedback Score: 0 reviews
93 Ford 7.3 idi crank marks for TDC
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > Ford Diesels > 7.3L IDI Diesels (Not Power Strokes)

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome