Been real busy lately, great for the pocketbook, makes for more repair work.
Wednesday the old 6-71 in my tms300 sounded off when I tore down on a job. Not bad at full throttle/ or with no load, but under-load going up and down on the throttle, it seemed to have a miss and sounded wrong. Made a warble like sound when accelerating under load.
First thought- fuel filters, or maybe injector. Infared thermometer showed #4 cyl. 20 deg colder. Pulled injector, and it didn't look bad, and was squirting fuel. Head off and it looks like 2 valves aren't quite closing, they're sticking up just a little, carbon buildup or weak/broken spring suspected. I think it was still trying to fire, we weren't getting any fuel type smoke out the exhaust, I think those valves are just hanging up a bit.
The head has a lot of carbon buildup on it, I'm sure all our on jobsite idleing/ lack of full load when just running the pumps causes this. The head is headed to the machine shop tuesday, clean and check, I think we caught it in time before we hurt anything.
Grove Rt 730 on thursday. I was set up on a job and I went to swing and saw a huge cloud from the engine compartment. Swinging around, thinking I had blown a coolant line- no such luck- it was hydraulic fluid pouring from the back of the boom and landing on the hot pumps/ engine, making the cloud.
Racing a storm to set some I-beam poles, the customer says "Think you can just set the poles, you can fix that leak later can't you?" Nope- this was no minor drip- it was just flowing out. I ain't picking no load with fluid pouring out, back to the shop for the old 25 ton, throw two loads of rock in the horrible hole that I had to get through to get back there, (that was the reason I had the rt there in the first place). Set the poles and drug the truck crane out with a back hoe. Customer peeved that I did get it done with the truck crane, after I had told him I didn't think we could get in and out of there with the truck crane.
Two cranes down, but both jobs done.
Back at the shop late Friday, planning on pulling 110' and 4 sections of boom apart on the rt, we discovered it was one of the small 12" long 3/4"splitter hoses inside the boom had ruptured. I think we can change it through the 14" diameter access hole near the end of the boom, with it scoped 1/2 way out. No hydraulic shops open over the long weekend, so that will be tuesdays issue.
All in all it could have been much worse. They're both at the shop, and I'm thrilled I don't have to pull that boom on the rt. Have a good 4th .
Wednesday the old 6-71 in my tms300 sounded off when I tore down on a job. Not bad at full throttle/ or with no load, but under-load going up and down on the throttle, it seemed to have a miss and sounded wrong. Made a warble like sound when accelerating under load.
First thought- fuel filters, or maybe injector. Infared thermometer showed #4 cyl. 20 deg colder. Pulled injector, and it didn't look bad, and was squirting fuel. Head off and it looks like 2 valves aren't quite closing, they're sticking up just a little, carbon buildup or weak/broken spring suspected. I think it was still trying to fire, we weren't getting any fuel type smoke out the exhaust, I think those valves are just hanging up a bit.
The head has a lot of carbon buildup on it, I'm sure all our on jobsite idleing/ lack of full load when just running the pumps causes this. The head is headed to the machine shop tuesday, clean and check, I think we caught it in time before we hurt anything.
Grove Rt 730 on thursday. I was set up on a job and I went to swing and saw a huge cloud from the engine compartment. Swinging around, thinking I had blown a coolant line- no such luck- it was hydraulic fluid pouring from the back of the boom and landing on the hot pumps/ engine, making the cloud.
Racing a storm to set some I-beam poles, the customer says "Think you can just set the poles, you can fix that leak later can't you?" Nope- this was no minor drip- it was just flowing out. I ain't picking no load with fluid pouring out, back to the shop for the old 25 ton, throw two loads of rock in the horrible hole that I had to get through to get back there, (that was the reason I had the rt there in the first place). Set the poles and drug the truck crane out with a back hoe. Customer peeved that I did get it done with the truck crane, after I had told him I didn't think we could get in and out of there with the truck crane.
Two cranes down, but both jobs done.
Back at the shop late Friday, planning on pulling 110' and 4 sections of boom apart on the rt, we discovered it was one of the small 12" long 3/4"splitter hoses inside the boom had ruptured. I think we can change it through the 14" diameter access hole near the end of the boom, with it scoped 1/2 way out. No hydraulic shops open over the long weekend, so that will be tuesdays issue.
All in all it could have been much worse. They're both at the shop, and I'm thrilled I don't have to pull that boom on the rt. Have a good 4th .
Good news bad news week
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