Jcb 801.4 perkins 100.30

Discuss excavators here

Jeremy Rowland
Moderator
Posts: 8667
Joined: Sun Aug 05, 2007 8:36 pm
Real name: Jeremy Rowland
Has thanked: 1867 times
Been thanked: 1688 times

Re: Jcb 801.4 perkins 100.30

Post #21 by Jeremy Rowland » Sun Feb 26, 2017 11:23 pm

Nathanrogerbailey wrote:Read somewhere that these cassette injector pumps have no bleed screw. It just plugs straight into the engine.

If i remove it will i mess the timing out?? Just 4 bolts hold it in place


Don't remove it from the engine or you could mess the timing up; if it has no bleed screw and you are 100% sure that you get a good flow of air free derv to the injection pump so that you are not sucking any air then there may be a problem with the injection pump itself; that is probably where I would look next, in which case I would seek advice from a fuel injection pump specialist, sorry I can't offer you any better advice.

Jeremy


pgplantservices
Posts: 15
Joined: Tue Jul 31, 2012 7:34 pm
Real name: paul
Location: bristol
Been thanked: 2 times
Flag: Great Britain

Re: Jcb 801.4 perkins 100.30

Post #22 by pgplantservices » Tue Feb 28, 2017 10:47 pm

hi
you won't mess the timing up if you remove the pump as the pump sits on a camshaft.
to remove the pump
1,disconect battery
2, undo all pipes connected to the pump
3;remove stop solenoid
4,remove throttle cable from pump
5,undo four bolts from around the body
6 lift pump out and be careful as the pump has athrottle control arm connected to it
7place a piece of rag in the hole left by the pump, then remove the r clip that holds the throttle arm on to the pump.{this clip is small and can drop into the engine if the rag is not in place
hope this helps


Mrsmackpaul
Posts: 1007
Joined: Mon May 06, 2013 11:02 am
Real name: Paul Griffiths
Has thanked: 384 times
Been thanked: 256 times
Flag: Australia

Re: Jcb 801.4 perkins 100.30

Post #23 by Mrsmackpaul » Wed Mar 01, 2017 1:04 am

I havent seen one of these pumps before either but they are all pretty much the same to work on

I would have thought if you pull the pump you would have to spill time it again but I stand to be corrected on this

I still believe the slide or rack is stuck

Most pumps I have worked on this can be gained access to by lifting off either top cover or the side covers and its pretty easy to see whats stuck or covered in dirt and muck
The cover were the stop solenoid is would be were I would start


Paul
Your better to die trying than live on your knees begging


Topic author
Nathanrogerbailey
Posts: 18
Joined: Sun Nov 27, 2016 10:29 am
Real name: Nathan Bailey
Has thanked: 1 time
Been thanked: 1 time
Flag: Great Britain

Re: Jcb 801.4 perkins 100.30

Post #24 by Nathanrogerbailey » Thu Mar 02, 2017 12:12 am

What's the slide or rack? And how would I go about unsticking it?


Mrsmackpaul
Posts: 1007
Joined: Mon May 06, 2013 11:02 am
Real name: Paul Griffiths
Has thanked: 384 times
Been thanked: 256 times
Flag: Australia

Re: Jcb 801.4 perkins 100.30

Post #25 by Mrsmackpaul » Thu Mar 02, 2017 1:29 am

it meters the fuel to the injectors and when you pull the stop or turn the key off the can get stuck in off position and not allow any fuel thru for the motor to run

Having never worked on your style of injector pump Im not sure what it will have but it is normally pretty easy to see whats wrong once the cover is off

If you havent done this type of work before pictures are gunna be your best chance so the people trying to help can point you in the right the direction

Paul
Your better to die trying than live on your knees begging


Topic author
Nathanrogerbailey
Posts: 18
Joined: Sun Nov 27, 2016 10:29 am
Real name: Nathan Bailey
Has thanked: 1 time
Been thanked: 1 time
Flag: Great Britain

Re: Jcb 801.4 perkins 100.30

Post #26 by Nathanrogerbailey » Fri Mar 03, 2017 12:44 am

Will upload some tomorrow


Jeremy Rowland
Moderator
Posts: 8667
Joined: Sun Aug 05, 2007 8:36 pm
Real name: Jeremy Rowland
Has thanked: 1867 times
Been thanked: 1688 times

Re: Jcb 801.4 perkins 100.30

Post #27 by Jeremy Rowland » Fri Mar 03, 2017 8:38 am

Nathanrogerbailey wrote:Will upload some tomorrow



Nathan please keep us all updated with your progress it will be interesting to see what the problem turned out to be, just wish I could be of more help but I have not had experience of this particular fuel injection pump and although many working principles are the same much technology has moved on since I wielded a spanner in anger.

Jeremy


Topic author
Nathanrogerbailey
Posts: 18
Joined: Sun Nov 27, 2016 10:29 am
Real name: Nathan Bailey
Has thanked: 1 time
Been thanked: 1 time
Flag: Great Britain

Re: Jcb 801.4 perkins 100.30

Post #28 by Nathanrogerbailey » Fri Mar 24, 2017 8:42 pm

Sorry guys been busy. Im waiting on someone to come out and have a look. Gone beyond my knowledge now.


Jeremy Rowland
Moderator
Posts: 8667
Joined: Sun Aug 05, 2007 8:36 pm
Real name: Jeremy Rowland
Has thanked: 1867 times
Been thanked: 1688 times

Re: Jcb 801.4 perkins 100.30

Post #29 by Jeremy Rowland » Sat Mar 25, 2017 8:11 pm

Nathanrogerbailey wrote:Sorry guys been busy. Im waiting on someone to come out and have a look. Gone beyond my knowledge now.


Good luck with it Nathan; let us know what the problem was. :thumbup:

Jeremy

User avatar

FOWLER MAN
Posts: 2358
Joined: Wed Dec 09, 2009 11:28 pm
Real name: fred evans
Has thanked: 1295 times
Been thanked: 1111 times
Flag: Wales

Re: Jcb 801.4 perkins 100.30

Post #30 by FOWLER MAN » Sat Mar 25, 2017 11:27 pm

Hi,
Just a few pointers which may help
On the question of spill timing. If there are shims under the pump flange when you remove it be sure to return them as you find them. The spill timing is set by adding or removing shims here but in some cases none are fitted or required.
If the rack, (slide), is free you will be able to move it back and fore with light finger pressure. The link arm at the back of the pump is secured to it with the snap pin.
As there is no bleeder on the pump you could remove a delivery valve to be sure you have full flow through the pump. To do this remove an injector pipe and take out the fitting by which it was attached to the pump. Under the fitting you will find a spring and under the spring a small plunger.
Remove the spring and plunger and replace the fitting. You should then be able to use the lift pump to obtain a free flow of fuel from the fitting. You may have to turn the engine a little to reposition the cams that operate the lift and injector pumps for this to work. Don't forget to switch on the ignition to energise the stop solenoid.
If you find fuel flowing ok here it points to the pump itself being at fault.

Image


Return to “Excavators”

Who is online

Users browsing this forum: No registered users and 14 guests