I have a 14 liter detroit and the connecting rods are larger than the liners so I can't take the pistons out to pull the liners. But I want to replace the liners.
Also the liners show very little ridge or wear that I can see from the inside but the truck does have 830,000 miles on it. Shouldn't it have quite a bit of ridge if the liners were wore?
Help with piston liners
Discussion in 'Volvo Forum' started by Flightline, Oct 4, 2011.
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never been in a new detroit but no ridge is normal crosshatches on liners gone then yea worn. does the connecting rods have bolts on the wrist pins if so take them off there then pull the rods. or pull the whole assembly, rod piston and liner.
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Nice to know about the ridge and the crosshatches.
Only couple cylinders still showing the cross hatches.
I don't beleive I can get to the piston pins to remove the bolts, though it should be the old style. Tomorrow I'm thinking of trying to push the rods up against the liners, hoping to push the liners out. A DD mechanic told me he had heard of that and that it doesn't take a lot of pressure to get the liners out. Said that the liners are mostly just held in by the head sitting on top. -
Found from a company called Apex. It looks like a rubber oil filler cap but 5 inch diameter. Squeezes the sizes of the liner before pulling. I just can see paying over a $1000 for it.
If my idea from the bottom doesn't work, then maybe I can find one for rent somewhere. -
is the rod caps to big or is it the piston ring hiting the carbon ridge on the liner why you cant get them out?
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If I could get to the wrist pins and unbolt them, then maybe I can get the pistons out the top, but I don't think one can get enough room in the bottom of the cylinder. Going to check tomorrow. I've been told they will only come out with the sleeves but I don't beleive everything I'm told.
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I apparently have the newer style pistons which connect the wristpins on the side with C clips.
So the pistons have to go up with the liners so to remove the out the bottom.
So far only way I can see is to order a special liner puller J-45876 at a cost of $948 plus shipping.
Did try using the crankshaft to push against the pistons which didn't work. Was able to hold postion but I think the crank was trying to push more sideways because with tremdous force on the front of the crank it didn't budge. -
be careful dont scratch crank. one way to push them out is the poormans way take a bottlejack and a pcs of wood cut to the right length and jack up on the liner be real careful and not jack to much because when it goes you could damage the block. you wont have to jack it up much just enough to put pressure on it and then just wait let gravity do the rest.Flightline Thanks this.
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tried using the crank against the rod while using hammer and punch against the rod (two person job) but still wouldn't budge the liner.
Now letting it set overnight with a bottle jack pushing up against the rod to the liner. Just enough pressure so lifting the engine approx. 1 inch in the front. And I on #2 cylinder. Though this is the 1st liner trying to get out. -
LOL.......Im a mechanic and Im currently overhauling a 14L detroit. The tool mentioned above by Apex is a MUST!! You have to have it to pull liners from these engines. The liners come together and liner/piston must be set in engine as one unit. You have to press them in and be sure not to cut the new o-rings. Make sure you install them with the numbers on the caps on the same side as well.
KB3MMX Thanks this.
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