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Restored d17 project
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Topic: Restored d17 project
    Posted: 17 Aug 2025 at 7:45am
Blessed Sunday morning
Just got this d17 in that does not turn over at all and I’m guessing that it’s the crank seals are the culprit due to that being the last thing that was done to it.
It has been fully redone inside out supposedly.
I thought that I’d post on here from the start to finish so that it’s on the record.
Btw the rear crank seal is still leaking…..


Edited by 55allis - 10 hours 56 minutes ago at 5:55pm
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21815 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Aug 2025 at 7:57am
That's a bad deal. I figured he'd have someone else (competent) fix it right and keep it after all the $$$$$ spent on it.
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 50 minutes ago at 6:01pm
Update: found that all 8 push rods are bent and I call shot…
The rear crank seal leak ended up being the gasket had fell into the oil pan.
Anything else I should check?
I’m going to re-torque everything just to be safe.
What are the common problems that cause pushrod bending? Don’t want it to do it again…
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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plummerscarin View Drop Down
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Joined: 22 Jun 2015
Location: ia
Points: 3901 		Post Options Post Options   Thanks (0) Thanks(0)   Quote plummerscarin Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 28 minutes ago at 6:23pm
In my case, the valves hung up in the head. Bent pushrods, bent valves, and left a mark in the piston where they made contact. Might even consider having the rods inspected as well.
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 19 minutes ago at 6:32pm
Here is the original thread about it. https://www.allischalmers.com/forum/topic207217_post1773954.html#1773954
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 87561 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 1 minutes ago at 6:50pm
hard to believe that EVERY VALVE was stuck.. but possible... I would check the CAM TIMING... that would effect ALL valves  hitting the pistons.... checking the rods for any BEND would be a good idea.
Like them all, but love the "B"s.
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Les Kerf View Drop Down
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Joined: 08 May 2020
Location: Idaho
Points: 1243 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 22 minutes ago at 8:29pm
Originally posted by steve(ill) steve(ill) wrote:

hard to believe that EVERY VALVE was stuck.. but possible... I would check the CAM TIMING... that would effect ALL valves  hitting the pistons.... checking the rods for any BEND would be a good idea.

X2
The previous thread linked above gave no indication as to whether or not this engine ever ran at all and no clues as to what type of 'overhaul' was done. Wrong pistons? Increased stroke? Shaved head? High-lift cam? Timing gears thrown in there haphazardly? Confused
I dunno, I wonder who does?
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 54 minutes ago at 8:57pm
Funny thing is I don’t see any damage to the pistons or valves…
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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Bingo8 View Drop Down
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Joined: 04 May 2017
Location: Iowa
Points: 18 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bingo8 Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 49 minutes ago at 9:02pm
Oh, I am keeping it. 55Allis is helping me out. It was an unfortunate situation. Unfortunately, I am not sure what I could have done differently when choosing him to restore it. He came highly recommended, has his work in magazines, and put clinics on for tractor restoration. Seemed like the right guy at the time. Hindsight is 20/20 but I am moving on with someone who hopefully can get it fixed up.
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 28 minutes ago at 9:23pm
Found these numbers on on piston; AE 233

Maybe a brand and part number?
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8609 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 48 minutes ago at 11:03pm
Bout have to be cam out of time unless they're all stuck
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 937 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 11 minutes ago at 11:40pm
I’ll remove the timing gears cover and check it out.
Think I’m still going to have to split the tractor due to a hydraulic leak in the clutch housing.

Thanks!!
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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