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Tractor Talk Discussion Forum

Novice mechanic having problems with Perkins 203D

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Fargo

08-24-2003 06:56:30




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I lent my MF30 industrial backhoe loader to my neighbor. (first mistake) Now it doesn't run and he split town for good. It is a 1978 with only 2500 hours and a recent top half overhaul. In general, I love this machine.

The fuel tank was gummy so I posted on this board and got help cleaning it up, new filters and all lines are clean. When I crank it, I get no white smoke so I assume no fuel. Primed according to manual and checked the exit lines from the injector pump and they are squirting fuel. (I do not know if he screwed with the pump timing). Are my injectors clogged? If so what to do? I can't seem to check the line at the nozzle cause I can't get a wrench in there and it looks tricky to get the injectors off as well.

Really in a bind here. I need it for some work now.

As always, thanks in advance.

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Big Dean

08-24-2003 20:48:55




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 Re: Novice mechanic having problems with Perkins 2 in reply to Fargo, 08-24-2003 06:56:30  
I have to disagree here never use either on a Perkins engine it only takes a little to much one time to bust the piston in those engine. You do not have to loosen the injector lines at the injectors. Once you have the air bled at the injection pump bleeder screws You can loose one line at the pump that will bleed the air from the injection pump head that is what has to be bled then the fuel will force the air from the lines & injectors I have been bleeding them this way for 27 years & never had one that would not start doing it this way.

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Fargo

08-25-2003 01:00:38




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 Re: Re: Novice mechanic having problems with Perki in reply to Big Dean, 08-24-2003 20:48:55  
Thanks Big Dean. Your wisdom is much appreciated on this board. Have done as you said here and still no white smoke when I crank. Fuel is squirting out of the pump though.

Any more thoughts?



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Rod F.

08-25-2003 07:52:33




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 Re: Re: Re: Novice mechanic having problems with P in reply to Fargo, 08-25-2003 01:00:38  
Perkins don't like ether. You may need to crank some more to get fuel, or try at the injector. Are you getting a trickle out, or good shots from the pump? Should be a fairly good squirt of fuel.

Rod



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Fargo

08-26-2003 00:42:14




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 Re: Re: Re: Re: Novice mechanic having problems wi in reply to Rod F., 08-25-2003 07:52:33  
Thanks Rod,

Getting a good squirt of fuel at the pump.

Can't effectively loosen the line at the injector because there is hardly any room to get a wrench in there.

There is a little bolt on top of the injector. Is that for bleeding air??



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Rod F.

08-27-2003 20:47:37




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 Re: Re: Re: Re: Re: Novice mechanic having problem in reply to Fargo, 08-26-2003 00:42:14  
No, that is the leak off line, or return. It allows lubrication fuel that passes through the workings of the injector to return to the tank. If you have good fuel coming from the pump, then close the lines up, and it should eventually go, but it does help if there is any way to open the line at the injector. Good luck.

Rod



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Thanks

08-28-2003 03:45:56




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 Re: Re: Re: Re: Re: Re: Novice mechanic having pro in reply to Rod F., 08-27-2003 20:47:37  
ij



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Rod F.

08-25-2003 21:12:38




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 Re: Re: Re: Re: Re: Novice mechanic having problem in reply to bob, 08-25-2003 18:36:08  
Cool. Hope it works out well. Shouldn't be too big a project. Take care.

Rod



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bob

08-26-2003 00:40:49




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 Re: Re: Re: Re: Re: Re: Novice mechanic having pro in reply to Rod F., 08-25-2003 21:12:38  
Its supposed to be a quick-detact loader w/ 2 pieces that bolt to axle, then frame slides in & bolts w/2 humongus Allen bolts on each side, but mine have been welded solid, so you have to take roll bar & fenders off to back out of loader. Any ideas why? I'm not going to change it ; I presume something is broken or loose & its too expensive to repair. It's ok w/me to leave it on there. I just thought there might be some inherent weakness they have fixed.

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Rod F.

08-26-2003 08:07:16




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 Re: Re: Re: Re: Re: Re: Re: Novice mechanic having in reply to bob, 08-26-2003 00:40:49  
Not really familiar with how that is set up. I think the mast used to come apart on them. It did on the 777f's. Kind of a slide out arrangment. I would guess that they welded the allen head bolts just to keep them tight. It's hard to get enough torque on them without twisting the bit off. If there is room enough, just put a hex head in place instead. No problem to tighten with a socket. If not, you can just take the pins out on the arms and lift cylinders, and unplug the hoses. That loader should have a parking stand anyway. I would have to look at one again, but I thought that the q/t mounts were just a latch of some sort. mabey somebody changed that. Those things can be a bugger to shake and flex if they are loose. Where was the loader cracked? I would guess on the arm at the front cross member. Good luck.

Rod

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bob

08-26-2003 23:26:41




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 Re: Re: Re: Re: Re: Re: Re: Re: Novice mechanic ha in reply to Rod F., 08-26-2003 08:07:16  
they didnt weld the allen head bolts, they welded the slide out arrangement to make it one solid piece. Maybe they stripped the allen heads out. They are in there but loose. The parking stand stuff didnt come with it, and the stand holder was mangled anyway tho some heat would straighten that out. The cracks were where the side mounts come up to main frame. Serious weakness but buddy is great welder. They will be no problem to fix. More serious is the buckle in the slanting part going down to bucket. Looks like dozer or truck ran into it from the side. We will weld plates over that.

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rod

08-24-2003 08:32:00




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 Re: Novice mechanic having problems with Perkins 2 in reply to Fargo, 08-24-2003 06:56:30  
give it a shot of ether let the engine pull the fuel up one or two shots will not hurt it and you won't have to crack the lines. I have heard of pressurizing the fuel tank with compressed air to force fuel thru system. do you have a hand pump on it.
regards
rod



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Farmer Gene (WI)

08-24-2003 07:58:42




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 Re: Novice mechanic having problems with Perkins 2 in reply to Fargo, 08-24-2003 06:56:30  
You're going to have to get the lines loose at the injectors to get the air out. Once you get them loose, crank engine over untill fuel appears, then retighten and engine should start.



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stan

08-24-2003 07:20:10




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 Re: Novice mechanic having problems with Perkins 2 in reply to Fargo, 08-24-2003 06:56:30  
I think you should take the injectors out and have them checked.



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