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Search took 0.00 seconds. Search: Posts Made By: HorseshoeBay
Forum: Engines and Propulsion Systems 23-03-2024, 02:09
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

To polish the plunger, I wrapped the reverse side of fine sand paper anround the plunger and rotated it until a polished finish was achieved.

The Yanmar manual includes tests of the injection pump...
Forum: Engines and Propulsion Systems 22-03-2024, 02:44
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Hopefully, after 2 hours of close inspection and slow fine sanding the injection plunger and barrel and sufficiently lapped.
Forum: Engines and Propulsion Systems 21-03-2024, 04:42
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Barrel and plunger part numbers
Forum: Engines and Propulsion Systems 19-03-2024, 23:59
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Will try to find spare parts, such as the barrel and plunger.
Forum: Engines and Propulsion Systems 19-03-2024, 02:02
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

After cleaning and reassembly, the rack on the fuel injection pump moved freely as per the manual’s test.

However, after reinstalling the injection pump nd turning over the engine - disaster!
...
Forum: Engines and Propulsion Systems 14-03-2024, 02:56
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Learning by mistakes: drilled a 1/4 hole for a thread tap marked 1/4!

Had a 5/16 W18 tap, which worked in the 1/4 hole.

Now need to locate an appropriate bolt and washer.


Rewinding: the...
Forum: Engines and Propulsion Systems 13-03-2024, 20:37
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Looking for sizes of new one size up bolt and washer.
Forum: Engines and Propulsion Systems 13-03-2024, 20:07
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

The Air Bleeding Bolt is a banjo bolt isn’t it?

Looking for the size of the original bolt and then one size up?

Must the new bolt be a banjo bolt?

Also need a matching fibre washer.
Forum: Engines and Propulsion Systems 13-03-2024, 19:15
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Compass790,
Do you have experience with the air bleeding bolt on the fuel filter being stripped? Please see Wotname's post.
Forum: Engines and Propulsion Systems 13-03-2024, 05:19
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Recall, on the Air Bleeding Bolt, there was some kind of material wrapped around the threads.

It was loose, so I pulled it off.

Wonder what could replace that material, or would a new bolt be a...
Forum: Engines and Propulsion Systems 12-03-2024, 22:28
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

The Air Bleeding Bolt and washer don’t tighten down and seal against fuel, which leaks.

Fuel does flow down to the Fuel Injection Pump, however, fuel doesn’t come out of the Fuel Injection pump...
Forum: Engines and Propulsion Systems 12-03-2024, 04:15
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

The head was put on and a torque wrench was used to gradually tighten the head bolts.

The engine was manually cranked and produced and held compression.

The starter motor was used to crank the...
Forum: Engines and Propulsion Systems 10-03-2024, 01:30
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Bought a torque wrench at Repco today.


Please see the screenshot of advice about gaskets.


https://ssch.com.au/warning-on-the-use-of-hylomar/
Forum: Engines and Propulsion Systems 08-03-2024, 20:52
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

At TDC, the piston appears to protrude a little above the liner.


The head flat surface has been scrapped and sand papered, still leaving some of the original fine texture and marking.


...
Forum: Engines and Propulsion Systems 08-03-2024, 05:24
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Have a Sunity head gasket, which looks to have copper inserts.

One side has a form of embossing and the reverse side is flat.

Wonder about the orientation?

Seeking advice on how best to...
Forum: Engines and Propulsion Systems 03-03-2024, 21:44
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Wondering about the pushrods.

My memory on removing them 6 months ago is hazy, and the manual could be clearer.

Do they go through the head under the non-valve ends of the tappers?
Forum: Engines and Propulsion Systems 02-03-2024, 01:42
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

New o-rings were held into the grooves with grease and the liner was inserted.


I ran a finger around under the liner lip that projects into the crankcase for any sign of a snagged o-ring.
Forum: Engines and Propulsion Systems 01-03-2024, 09:36
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Photos after liner removal
Forum: Engines and Propulsion Systems 01-03-2024, 01:26
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Thanks Wotname!


Too tired today, and will need to remove the new liner to place the o-rings.


I couldn't understand where exactly the grooves for the o-rings are in the outside of the liner?
Forum: Engines and Propulsion Systems 29-02-2024, 23:08
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

I applied waterproof grease to the cylinder liner in accordance with the manual.

I tried to insert the cylinder liner with the o-rings around it in the grooves. However, it was a very tight fit...
Forum: Engines and Propulsion Systems 26-02-2024, 20:24
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

The rings were taken from the package and flexed just enough to get around the piston and into the recesses.

Was that approach wrong?

Can the gaps be adjusted once the rings are on the piston?
Forum: Engines and Propulsion Systems 26-02-2024, 20:17
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Yanmar Manual
Forum: Engines and Propulsion Systems 26-02-2024, 17:57
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Placed conrod in piston and inserted piston rings according to the Yanmar manual.

Compared with the original gummed up rings, the new rings stand out much more.
Forum: Engines and Propulsion Systems 26-02-2024, 04:46
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

Hi Wotname,

May I please ask about “BUT make sure the rings are in the correct order and the right way up. Set the ring gap BEFORE fitting them to the piston”?

Correct order?

Right way up?
...
Forum: Engines and Propulsion Systems 19-02-2024, 00:34
Replies: 110
Views: 10,722
Posted By HorseshoeBay
Re: Assessing a used Yanmar 8HP diesel engine

MicHughV great story. Back in 1993 in Gothenburg, old Volvo station/ranch wagons were proudly shown off along the main avenue, with some having a large sound system in the back.


Love built to...
Showing results 1 to 25 of 49
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