F134 CJ5 engine disassembly

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staninlowerAL
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Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

F134 CJ5 engine disassembly

Postby staninlowerAL » Fri Jul 15, 2022 3:56 pm

The teardown has begun and as expected the usual problems encountered from an engine that has been sitting for a l-oooooo-g time is testing my ingenuity and resources. Decided to not remove the engine from the frame (yet, might have to do that, we'll see). The C/S is still installed and #1-#3 pistons are out, the bores look good, #1 exhaust was stuck open. C/S and all moving parts are free except #4 piston which is refusing to move except for having been able to drive it down about 1/2 inch. I've not been able to get it to move upward, even the small distance that I drove it down. So, what my choices/options to get this piston out, preferably without taking the block out of the frame? I'm willing to sacrifice the piston and rod as I have a spare, just want to get it out without damaging the block. Anyone have any experience with heating the bore? I've seen some info on putting flammable material on top of the piston and light it on fire, talked to one person who had done this and it worked. Thanks for any and all suggestions and experiences that you might share. Stan

tst
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Re: F134 CJ5 engine disassembly

Postby tst » Sat Jul 16, 2022 12:25 am

if the rings are rusted to the cylinder wall it may not help, I have done that, put some atf in the cylinder and light it with a torch so gets hot enough to burn on its own, it does warm up the block then hit that piston while its hot, also try bumping it with the starter also

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Indy4570
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Re: F134 CJ5 engine disassembly

Postby Indy4570 » Sat Jul 16, 2022 8:40 am

my lil F134 in my 61 CJ5 is still ticking thank god, the ATF/acetone soak seems to be a popular choice. good luck!
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staninlowerAL
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Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
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Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Sat Jul 30, 2022 5:40 pm

Any tips or tricks to removing the rings from the aluminum pistons after they are out of the block? They are stuck really bad!

tst
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Re: F134 CJ5 engine disassembly

Postby tst » Sat Jul 30, 2022 10:29 pm

heat, makes the piston expand

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ricky racer
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Re: F134 CJ5 engine disassembly

Postby ricky racer » Sun Jul 31, 2022 5:04 pm

staninlowerAL wrote:The teardown has begun and as expected the usual problems encountered from an engine that has been sitting for a l-oooooo-g time is testing my ingenuity and resources. Decided to not remove the engine from the frame (yet, might have to do that, we'll see). The C/S is still installed and #1-#3 pistons are out, the bores look good, #1 exhaust was stuck open. C/S and all moving parts are free except #4 piston which is refusing to move except for having been able to drive it down about 1/2 inch. I've not been able to get it to move upward, even the small distance that I drove it down. So, what my choices/options to get this piston out, preferably without taking the block out of the frame? I'm willing to sacrifice the piston and rod as I have a spare, just want to get it out without damaging the block. Anyone have any experience with heating the bore? I've seen some info on putting flammable material on top of the piston and light it on fire, talked to one person who had done this and it worked. Thanks for any and all suggestions and experiences that you might share. Stan


Why not pull the engine out and put it on a stand? Life will be so much easier......
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staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Sun Jul 31, 2022 6:31 pm

ricky racer wrote:Why not pull the engine out and put it on a stand? Life will be so much easier......

:thanx: for the suggestions. I agree that would probably be the best option. The main problem is I don't really have the capability/facilities, etc to do that, so I'm trying to get the engine unstuck and running to assess the overall condition and possibilities of this vintage jeep (estimated age 50+ years, it's about a 68 model) without having a fortune invested in it. If I can do it this way, I will determine if I want to invest in a full rebuild and/or restoration. At this point, I've got more time than funds to invest in this.

staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Thu Aug 18, 2022 4:42 pm

Update on the piston removal. I've constructed a puller from some angle, 5/8 x 12 bolts and flatbar. The angle is shaped and fitted to connect with the wristpin boss on the bottom side and welded to the 5/8 bolt, one for each side. The piston will be sacrificed by drilling a 3/4 inch hole through the top on each side at a point opposite the connecting rod next to the outside edge. It was going to be damaged in the removal process anyway and I have a spare. The 5/8 inch flatbar is drilled for the two bolts and will rest on the flat surface of the block. The plan is to assemble this contraption and by tightening the nuts will provide the force to lift the piston up and out the top. I've also constructed an extension (not shown in the picture) to bolt on the lower end of the connecting rod to allow additional hammer force to be applied while pulling from the top. The picture is a discarded piston that was used to fit this all together. Wish me luck!!
puller_#2.jpg

Bob McCarty
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Re: F134 CJ5 engine disassembly

Postby Bob McCarty » Thu Aug 18, 2022 4:55 pm

I don't think you'll need it, but GOOD LUCK!!
"We don't need to think more,
we need to think differently."
-Albert Einstein

staninlowerAL
10+ Years
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Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Thu Aug 18, 2022 5:11 pm

Bob McCarty wrote:I don't think you'll need it, but GOOD LUCK!!

Thanks Bob but I'm sure that I can use all the luck I can get. This problem has sorely tested my ingenuity skills up to this point. Cub tractors are not so complicated although I guess they could be. Certainly a lot more space to work!! :lol:

staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Wed Sep 21, 2022 2:13 pm

Update on the piston removal project. Happy to say that the effort has been successful. I drilled 2 holes 3/4 inch diameter in the piston to be removed and fitted the two 5/8 inch modified bolts from the bottom (C/S in place), extending through the 1/2 x 4 plate as shown in the first picture. With all parts in place and tightened, I started wrenching the double nuts to draw the piston up and out the top. It was a fight all the way and required readjusting the spacers as the piston neared the top. The final picture shows the piston still in the bore but well over half way out. Only about 1.5 inches of the lower skirt is still holding. Thanks for all the suggestions and encouragement.
puller_2a.jpg
puller_2b.jpg

tldec50
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Re: F134 CJ5 engine disassembly

Postby tldec50 » Wed Sep 21, 2022 7:04 pm

Good job stan,now just weld up them holes and new rings ready to reinstall,Tim

staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Wed Sep 21, 2022 7:53 pm

tldec50 wrote:.....just weld up them holes and new rings ready to reinstall,Tim

Thanks, I have several pistons from other projects so I plan to just replace it and keep it for a souvineer. This is a Grandson project so he might want to keep it for a pen/pencil holder.

staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Sat Sep 24, 2022 7:44 am

Sometimes a guy gets lucky, or blessed!! Found NOS piston .010 oversize on ebay. Ordered yesterday. :D

staninlowerAL
10+ Years
10+ Years
Posts: 4407
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (2)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (3)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: F134 CJ5 engine disassembly

Postby staninlowerAL » Tue Sep 27, 2022 4:07 pm

Found and ordered .010 replacement rings & other misc parts for reassembly. Still looking for one more piston, will use one of the old ones for now since the seller only had 3 NOS pistons.


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