CTR 42 decksaw.

BargeMonkey · December 19, 2020, 11:20:34 PM

I hate to beg for repair advice but I'm at that point. 😆 I've slashed ALOT of wood with that saw, I knew at some point she would go down.
Bar started drifting a bit, really only when cold, now the bar goes down great, won't come up. Pop the line off the top of the cylinder and it comes up. Ive opened and chased most of the hoses, checked my couplers, took the bar up coupler right out 🤷‍♂️ which section inside that saw box controls the saw up ? Where am I best starting.

Cylinder 🤷‍♂️ I don't know. Does anyone have a good book on this saw ? I'm headed to Mass this week and buy another saw which I believe is a sister to this one just so I can get wood out till this ones fixed.

barbender · December 20, 2020, 12:27:25 AM

I can't believe with how much you're drooling all over the circle saw on that Bell's, swearing you'd never go back to a barsaw processor, and here you are slashing thousands of cords with a barsaw🤔🤔 Bar saw slashers are rarer than chain chokers up here, and for good reason. Almost everything is cut 100", that's a lot of slashing and I'm guessing a circle saw has about 3x the cut speed as the barsaw? Can you cut multiple stems at a time with the bar saw setup? I've never personally ran a slasher, but the typical method is to grab several stems, depending on the size, and slash them all at once. Most of the slashers have a sliding butt plate so you pull the stems up, and the plate pushes back to even the butts then you cut. A good operator can hammer out a LOT of wood in a day.

Haleiwa · December 20, 2020, 08:07:42 AM

Sounds like the valve is stuck. Trace the hose back that relieves the cylinder pressure when you remove it. I have known of old hoses flaking rubber off the inside and pieces jamming a valve.

Old Greenhorn · December 20, 2020, 08:23:01 AM

It's always something, isn't it Eric? Doesn't that machine have pressure sensing in the hydraulic circuit for the bar feed? Perhaps that is being fooled into thinking it's under a big load when it's not. A clog or something like that could do it, or a restricted hose. Look for a pressure adjustment someplace along that line. Did it quit all at once, or did it get gradually worse? I am surprised to see you stumped. I am no hydraulic whiz, but my troubleshooting skills earned my living for 40+ years. If you are still in a bind on this, I can't make it up until Tuesday, but I would be happy to come for the day and stare at it and piddle while you attend to other things. I searched and the best I could find was a parts manual on Ebay with good break down diagrams for 35 bucks, out of Oregon. I can't put the link here, but if you search ebay for "CTR IP Series Slasher Saw Spare Parts Catalog List Manual Book BLOUNT log tree" you should find it just fine.
Let me know if I can lend you a hand.

mike_belben · December 20, 2020, 08:33:44 AM

@kiko knows these things well and i really dont. Without seeing a plumbing schematic id just be taking guesses as how its laid out. I found a pdf sales brochure for it and it just says patented load sensing feed control. Wants 75gpm @2500psi minimum... Wow thats a lotta fluid.

Does your KB have dedicated plumbing for it or are you using outrigger valves? Call me when yer workin on it, maybe we can finger somethin out. My guess is whatever valving they use has a chunk of trash in it like haleiwa said.. thats keeping a spool in the wrong position, blocking the return path. Wild guess, itll look like a cartridge valve. Maybe bad Oring causing crossleakage of the pilot pressure. Take pics for reassembly, look for broken spring bits and stuff like that.

snowstorm · December 20, 2020, 08:38:02 AM

come a little further north and find a old hood circle saw slasher

bushmechanic · December 20, 2020, 09:25:54 AM

I'd check the bar cylinder first for bad seals. It may be "regening" that's where the oil bypasses in the cylinder and it will only do one function no matter which side gets the oil flow. If not there it must be a valving issue.

swvalogger · December 25, 2020, 01:24:59 PM

Hydraulic hoses from cylinder has metering flow valves on them to control bar speed sounds like one of them may be clogged or has gone bad . They are directional ,with arrows for flow direction, so look closely when removing and reinstalling.

kiko · December 25, 2020, 04:05:47 PM

I have the parts manual will dig it out probably Saturday. Any way the bar down pressure is teed off the saw motor pressure and routes through a pressure reducing / check valve assembly. The check is likely stuck or blocked not allowing the oil to flow out of the cylinder. There are only three hoses to the saw . Saw pressure , return and bar up. Line item 16. Pilot operated check valve.

kiko · December 26, 2020, 05:35:39 PM

So I was not aware of a standard 42 have not encountered one of those. This is the set up I am familiar with. The saw with buck board utilises the pressure reducing valve. It appears your saw does not have a buck board.

BargeMonkey · December 26, 2020, 05:59:22 PM

At onetime this saw had a hydro board. Im honestly thinking my problem is on the loader side, I dont think the coil on the bar up circuit is working right, 1999 310E.