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CATEGORY LISTINGS > DEUTZ > F4L912 Injector Pump Timing [ REFRESH ]
Thread Title:

F4L912 Injector Pump Timing


Created On Saturday May 10, 2008 13:34 Diesel Talk
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sailindon
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Posts: 1
Joined: May 2008

Note Saturday May 10, 2008 13:34 View thread in raw text format
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Hello:

I'm new to this list, and I see this question has been asked before with no replies from last year.

I'm working on a F4L912 Deutz that someone had taken the injector pump off and had it overhauled by a separate shop, I will be reinstalling the pump and am not familiar with the proper timing procedure for this engine/pump. I have looked in the archives and on the web without any luck. If there is someone how could give me the procedure, I would very much appreciate the help.

Thanks, Don

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Don B
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tinkertanker
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Posts: 8
Joined: Mar 2008

Note Friday August 22, 2008 04:58 View thread in raw text format
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I just ripped off this Werkstathandbuch which I think means Workshop Manual and it looks like I'll have to learn the procedure for my own F4L912 so I'll get back to you in a few days. Right now I'm swamped with a project using this engine but now gone seriously behind sched if I have to rebuild it. In preparation you'll need a protractor decal (with more or less 30 degrees of splay either side of 0) to stick on the front pulley and (as the one tool you probably cannot hack up DIY) a manual high-pressure pump ready to statically pressurize the injector pump. Later.





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If DIY were a religion, hmmm... I just made it one.
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tinkertanker
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Posts: 8
Joined: Mar 2008

Note Saturday August 23, 2008 06:19 View thread in raw text format
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If you have a Bosch injector pump....

Set engine to TDC

Mount protractor on front pulley, set 0 to TDC mark

Back the crank about 90 deg opposite to normal direction. You
will later need to sneak up in normal direction to a fuel delivery
point.

At pump unplug cyl-1 injector line, supply line, overflow line

Close return line hole with plug (will bleed here later)

Connect handpump to fuel (FILTERED) supply and injector inlet
as appropriate. Image shows piece of vertical transparent hose
routed to show output flow/freefall-drops from injector pump
(below)

Lock fuel/throttle/power/warp lever to full power (fwd on my F4L)

Barely loosen blank plug on injector return port and work pump to
bleed out any air, close plug.

Continue pumping while slowly veering crank in normal direction
until flow "is transformed to droplets only", annunciating BOD
(beginning of delivery). I don't get this part just reading the book.
Does steady flow downgrade to droplets or does weak flow increase to
level froming droplets?

Note degrees now shown on protractor ("actual" BOD)

At this point, if reading agrees with specs, you're done.
(I have no clue what spec BOD is, gotta run to store in 5 minutes).

Else,

Turn crank to "specification" BOD

Loosen V-belt tensioner or cover

Loosen fastening bolts of advance/retard unit. According to image
you may need to weld or steal a crooked wrench.

Turn injection pump cam while working hand pump until flow
flow "is transformed to droplets only".

Tighten up and recheck BOD several times until until spec
degree mark results consistently.

use back assword if I can be of further help

gro.ratxirt@tca

confused

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If DIY were a religion, hmmm... I just made it one.
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sinodiesel
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Posts: 6
Joined: Dec 2009

Note Monday December 14, 2009 07:12 View users profile View thread in raw text format
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http://www.sinodiese.com visit our website for more infromation about the all kinds of diesel engines.

I am working in a engine trading company, and maybe i can help you with this, could you please add my MSN(sunlordjacky@live.cn)or send me mail to sunlordjacky@gmail.com. We have a close partner relationship with Deutz factory in China, so I will try my best to help you to solve the problems.

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