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Old 12-10-2017, 10:41 AM   #1
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Lehman ID problems

I am closing on a boat this week .the listing and the surveyor say it's a 135 but from the pictures it looks like a 120 .
The listing has it's a 135 pH the survey has 2725 e . It has the flat rear manifold like a 120 .did different companies use different parts
The hp doesn't matter to me I just want to have the right spare parts. I need to move the boat 250 miles and need a few parts for the trip
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Old 12-10-2017, 11:10 AM   #2
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the serial number on my 120 block, sold to me and agreed by a surveyor as a 135, is behind the hose from the expansion tank to the heat exchanger and the fuel injection pump.
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Old 12-10-2017, 11:18 AM   #3
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Send a photo to Brian Smith at American Diesel. He can sort out anything to do with FLs.
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Old 12-10-2017, 11:35 AM   #4
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Post a pic here. It will get solved real quick. Fresh water cooling pump hose routing, and a few other differences I can think of.
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Old 12-10-2017, 11:51 AM   #5
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Old 12-10-2017, 12:21 PM   #6
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As far as I know the lehman 135 has a chrome valve cover
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Old 12-10-2017, 12:39 PM   #7
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I have seen some without the chrome cover . but they had the air intake on the top of the manifold.i have a another pic but it's too large to post
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Old 12-10-2017, 12:48 PM   #8
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and my 120 has the chrome cover....

the PO replaced the 135 block with a 120, but used many regular and adapted parts from his old 135.

always best to check the block serial number.

American Diesel was stumped quite awhile when I was I was ordering parts till we went through some of the block specific features.
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Old 12-10-2017, 01:01 PM   #9
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I really just want to get the hoses filters belt impeller and exhaust riser and gasket .I would like to leave Friday to get it.so I need to order the stuff fast.
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Old 12-10-2017, 01:06 PM   #10
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Old 12-10-2017, 01:13 PM   #11
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even with a 120, depending on water pump model changes the impeller, the alternator could change the belt, the fresh water pump may change a hose.... hate to be a downer... but need to check each.
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Old 12-10-2017, 01:25 PM   #12
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I really just want to get the hoses filters belt impeller and exhaust riser and gasket .I would like to leave Friday to get it.so I need to order the stuff fast.
Most of the Lehman parts should be the same for the 120/135. Unless someone substituted a johnson raw water pump for the original jabsco. johnson impeller is a tiny bit thicker. Check the pump cover plate.

Are you just putting together a complete set of spares? Change the filters, Check belt tensions, check each hose for squishy spots, check pump output at exhaust, if the engine was maintained you should be good for 250 mi.

Make sure your SeaTow membership is current
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Old 12-10-2017, 01:27 PM   #13
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Old 12-10-2017, 01:33 PM   #14
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Look at the front of the engine. Can you replace the belt easily? On the sp135, there are no hoses in the way.
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Old 12-10-2017, 01:36 PM   #15
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for those that havent seen one, I have read there is a strange tractor fresh water pump for a 120 that routes the hoses behind the belts.

probably rare, but you never know.....
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Old 12-10-2017, 01:51 PM   #16
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Look on your injector pump for a drain plug since that needs to get changed on a scheduled basis. There isn’t one on the pump for the 135.

Your air intake is different and I’ve never seen a SP135 with a number tag on the rocker arm cover.

The drawings are for the 135.
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Old 12-10-2017, 02:30 PM   #17
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thanks for the help and suggestions. looks like I will have to wing it . maybe the po .has some spares that go with it . I'm in too deep to back out now . my insurance has towing and I'm going to add towboat us also . they are right across from my slip.
are the oil and fuel filters the same?

thanks again
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Old 12-10-2017, 02:37 PM   #18
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Send a photo to Brian Smith at American Diesel. He can sort out anything to do with FLs.
When it comes to all things Lehman, no better place to call.
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Old 12-10-2017, 02:53 PM   #19
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yes i'm going to do that they were suppose to send me a quote(I never got it) but that was before I knew I had an id problem so the quote may have been for the wrong parts (135).I can't verify much now the boat is 5 hours away. I'm trying to put together a crew to go with me to go get it everyone wants to go until it's time to go.
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Old 12-10-2017, 05:22 PM   #20
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120 typically has rear heat exchanger, 135 has side-mount. Your pic shows a 120 exhaust manifold, with the bleed petcock at the forward end. Check the ID sticker on the valve cover; 2715e is a 120, also called a Dorset, and 2725e is a 135, called a Dover. 120s have a fan belt that reuires removal of a main water hose to change the belt
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