More Newbie questions

[cqaigy2]

I tightened the filter by hand as far as I could get it - maybe I'll take a strap wrench to it, getting it extra snug. Now that I think of it, the old filter was on very tight. How could I tell if I was leaking air around the filter? Will the hydraulics become weaker? I definitely don't want to burn up a pump . . .

You'll see air bubbles when bleeding the system. Tighten the filter until that stops.

 

[ponytug]

If you have air in a hydraulic circuit, movement will be spongey. In the drive circuit, you can see/feel it as lag in starting and stopping.

You can also see foamy bubbles in the hydraulic tank if you run it for awhile and then look in the tank. If you have water in your tank and the oil heats up, you will also see some bubbles as the water comes out of the oil as vapor (steam).

When bleeding the filter, you want to make sure that the oil coming out of the bleed line into the hydraulic tank really is free of bubbles.

Hope this helps.

All the best,

Peter

 

[SpringHollow]

I stick the end of the bleed hose into a jar with oil in it, immersing end in the oil to make the air bubbles easier to see. The jar is inside a large coffee can to collect any overflows. Others stick the hose into the tank and do the same thing but I find that hard to see. If I stop the bubbles by tightening the filter, I have never subsequently seen any evidence that I later got air in my lines.

Ken

 

[BobRip]

My Robin engine has about 1100 hours on it and is using a cup of oil or more every hour of run time. I am using Mobil 1 10W30 and now will be using 10W40. Has anyone tried this and did it help with consumption? Oh, the PT422 is kept and a heated garage which never gets below 60, so it starts pretty well even when cold outside.

 

[MossRoad]

I'd be surprised if changing the grade of oil did anything for that much consumption. Sounds like rings are in your future. On that note, has anyone rebuilt one of these Robin engines? Any notes on parts availability, tech manuals, rebuildability, etc....? Just asking. I've never rebuilt a Kohler either. Just Chevy small block V8s and straight 6s.

 

[BobRip]

Terry agrees with you. I am going to run it till it gets much worse and the put in a new 25 hp engine.

 

[MossRoad]

Any plans for the old engine if you go with a new one? Rebuild it and put it on the shelf for the year 2030 perhaps?

 

[BobRip]

I have never rebuild an engine , so that would give the opportunity with little to loose. Good idea. Are parts available.

 

[MossRoad]

Parts availability was another one of the reasons I wanted a Kohler engine and went with the 425 instead of the 422 back in 2001. I looked around and there were NO Robin parts places or dealers in town back then. I think they are more common now, but haven't looked.

 

[SpringHollow]

Starts muttering expletives along with MossRoad's name as I add "rebuild an old engine for yucks" to page 203 of my list of projects that I need to do.

Ken

 

[MossRoad]

Oh man...
- I've got 2 snowblowers that I'll someday combine to make one snowblower (that's 30 years old and doesn't do such a great job, as I recall).
- A 1971 Toyota Land Cruiser that's been in a storage shed since 1996 that I'll someday put back together. Its got a Chevy 230 straight 6 in it right now that's too modified for a reliable street engine.
- A 1985 Chevy truck in the back yard since about 2005 that's an organ donor for the Toyota. Its got a 350, 4-bolt main and a 700R that only has about 4000 miles on it.
- A 292 straight 6 that's an alternative to the 350 from the 1985 Chevy for the Toyota.
- A 4L60-E transmission that's a spare for my 1993 Suburban... just in case.
- A 1977 Yamaha RD400 drag bike/cafe racer that's in little pieces (because its evil, like Christine).
- A full fiberglass body, a full metal body, two metal firewalls, two hard tops, ambulance and fold-down doors, all for 1971 Land Cruiser.
- A 350 4 bolt main block on a skid that's.... I can't remember why I'm keeping that one.
- The backhoe project that needs about 20 more hours of work to finish.
- An 8.5hp Briggs that'll do something, some day.
- A 2.5hp Briggs that'll do something, some day.
.............. and a honey-do list that's two pages long that overrides anything listed above.

And a kid in grad school, a kid going to Purdue next year, two elderly in-laws that I love dearly who need a little more assistance recently and I'd like to go fishing a couple times this winter. :confused3:

 

[woodlandfarms]

Take the land cruiser off your hands in a heartbeat.

 

[MossRoad]

Take the land cruiser off your hands in a heartbeat.

Several folks have said the same thing.... I don't know why.

 

[Red Zebra]

Oh man...
- I've got 2 snowblowers that I'll someday combine to make one snowblower (that's 30 years old and doesn't do such a great job, as I recall).
- A 1971 Toyota Land Cruiser that's been in a storage shed since 1996 that I'll someday put back together. Its got a Chevy 230 straight 6 in it right now that's too modified for a reliable street engine.
- A 1985 Chevy truck in the back yard since about 2005 that's an organ donor for the Toyota. Its got a 350, 4-bolt main and a 700R that only has about 4000 miles on it.
- A 292 straight 6 that's an alternative to the 350 from the 1985 Chevy for the Toyota.
- A 4L60-E transmission that's a spare for my 1993 Suburban... just in case.
- A 1977 Yamaha RD400 drag bike/cafe racer that's in little pieces (because its evil, like Christine).
- A full fiberglass body, a full metal body, two metal firewalls, two hard tops, ambulance and fold-down doors, all for 1971 Land Cruiser.
- A 350 4 bolt main block on a skid that's.... I can't remember why I'm keeping that one.
- The backhoe project that needs about 20 more hours of work to finish.
- An 8.5hp Briggs that'll do something, some day.
- A 2.5hp Briggs that'll do something, some day.
.............. and a honey-do list that's two pages long that overrides anything listed above.
:

Lots of parts for a serious project....just say'n. =)

 

[Raw Dodge]

Several folks have said the same thing.... I don't know why.

I had 2 land cruisers ,love them! I did chevy swaps on both of them,I had a 70,and a 77 and my dad had a 78 with a chevy steering box conversion and 350 swap..
On the oil burning,I'd stop wasting your money on synthetic oil if it's using 8oz per hr and just use fleet 15w40 diesel oil unless it's real cold there.That amount of oil usage dictates serious issues,your cylinders are likely out of round or tapered and will require over boring to restore . While these engines and the kohlers are rebuild able,it's really,not cost effective as of now.i just bored and put larger Pistons in one of my Kohler 25 commands and it cost over 500 dollars,and all we replaced was the Pistons and rings,exhaust valves and gaskets ,that's it! If I had the money I would have replaced it for about 1600.00, my engine ran great but was using about 8oz of oil every 10 hrs....it has about 4500 hrs on it,and we've always used top of the line oil from Schaeffers and Napa full synthetic. If the aftermarket ever starts supporting these engines with quality parts the situation will be different.A set of genuine kohler oversized Pistons and rings cost 300.00... I can buy 3 sets for a chevy v8 for that.....

 

[MossRoad]

Lots of parts for a serious project....just say'n. =)

View attachment 448221

OOOOOoooooo....... nice! :laughing: