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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Siezed perkins
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Topic Review (Newest First)
10-14-2012 11:57 PM
SloopJonB
Re: Siezed perkins

Quote:
Originally Posted by wph36 View Post
Thx again everyone for your input.
Well I was able to pull the injectors with little trouble, and filled all 4 cylinders with diesel, and let it sit for a couple weeks ...still no movement with starter or pipe wrench.
Removed the starter to eliminate the possibility of it binding, but still dosen't budge.
I am assuming next step would be to pull the head, unless someone knows of any other less painful steps I could take?
Winter's almost here, and I really hate the idea of waiting until spring before knowing what my options are.
If it's seized that tight it needs rebuilding anyway - even if you somehow managed to get it broken loose, imagine the state of the rings & bearings.

Yank it and if you don't know how, pay someone who does to babysit you while you rebuild it over the winter. That will be WAY cheaper than replacing it with new, you'll know every inch of it and a fresh old Perkins will probably outlive your children if properly maintained.
10-14-2012 09:36 PM
wph36
Re: Siezed perkins

Thx again everyone for your input.
Well I was able to pull the injectors with little trouble, and filled all 4 cylinders with diesel, and let it sit for a couple weeks ...still no movement with starter or pipe wrench.
Removed the starter to eliminate the possibility of it binding, but still dosen't budge.
I am assuming next step would be to pull the head, unless someone knows of any other less painful steps I could take?
Winter's almost here, and I really hate the idea of waiting until spring before knowing what my options are.
06-15-2012 12:42 AM
CarelessNavigator
Re: Siezed perkins

Quote:
Originally Posted by bljones View Post
No.
Quick way to bust flywheel teeth, and/or the bellhousing compared to the relativley mid torque applied at the crank which should already be able to deal with crank starting.
Only if you are a flaming retard, in which case you shouldn't be touching an engine in the first place. Although the crank can take the turning force the bolt the pipe wrench is being put on may not be able to, especially if the engine is seized.
06-14-2012 11:59 PM
Capt Len
Re: Siezed perkins

Pull injectors ,pour in some diesel or better liquid. Pipe wrench on crank ,not teeth of ring. ....Back and forth. back and forth, back and forth. Patience... back and forth. Later you can decide if you have to pull the head or re ring Lots of nasty stuff is possible but get her turning first.
06-14-2012 11:40 PM
bljones
Re: Siezed perkins

Quote:
Originally Posted by CarelessNavigator View Post
You got me cringing with that pipe wrench. I would try removing the starter and get a pry bar on a tooth of the flywheel. The whole fulcrum lever thing works pretty good and will generate much more turning force with much less effort than a pipe wrench the chances of damaging anything and shouting lots of cus words will be much lower to.
No.
Quick way to bust flywheel teeth, and/or the bellhousing compared to the relativley mid torque applied at the crank which should already be able to deal with crank starting.
06-14-2012 11:34 PM
CarelessNavigator
Re: Siezed perkins

You got me cringing with that pipe wrench. I would try removing the starter and get a pry bar on a tooth of the flywheel. The whole fulcrum lever thing works pretty good and will generate much more turning force with much less effort than a pipe wrench the chances of damaging anything and shouting lots of cus words will be much lower to.
06-14-2012 05:28 PM
PorFin
Re: Siezed perkins

Quote:
Originally Posted by dabnis View Post
If it has glow plugs they may be easier to pull out? If there is coolant in the cylinders it should come out the plug holes.

Paul T
Not sure about the 4.154, but do I know my 4.108 has no glow plugs.

I think pulling the injectors and having them pop tested is probably going to be a wise thing to do regardless of the cause of the engine seizure. May as well get it out of the way now while the enthusiasm and energy is relatively high.
06-14-2012 05:20 PM
dabnis
Re: Siezed perkins

If it has glow plugs they may be easier to pull out? If there is coolant in the cylinders it should come out the plug holes.

Paul T
06-14-2012 05:10 PM
Faster
Re: Siezed perkins

Googled those CAV injectors... yikes, can see the issue there. Very glad for my Bosch injectors - more like pulling a spark plug.
06-14-2012 01:16 PM
PorFin
Re: Siezed perkins

wph,

Yeah, the Perkins (CAV) injectors can give you a good fight. I recently pulled mine, the last time I had done it was four years ago -- they were reluctant to come out. The key is patience and persistence. A little PB Blaster, a little gentle leverage, and you'll be good to go.
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