joestewart
Well-Known Member
Looking for a Boom Lift forum – could not find one so I thought I would post here.
Attention Snorkel Experts: TB 60 Fast Idle Woes – Please help
We bought this TB 60 with the Deutz diesel engine about 3 years ago. It worked fine for several months. Then we began to have “idle problems” which plagued us for a period of weeks. But then spontaneously the “idle problem” fixed itself and it worked fine for a period of months. Now the “idle problem” is back again with a vengence. We have done our own investigating and “troubleshooting with money”. We even called a local company that repairs heavy equipment. They sent two guys out here but they could not figure it out. It is probably an easy fix. I will attempt to describe the problem.
We have figured out there are three engine speeds:
While standing in the platform, when you depress the “foot switch”, then engine speed increases to “high idle”, but it only stays in “high idle” mode for approximately four (4) seconds. At that time, it will return to “low idle” (it does this even though we are holding the foot pedal in the depressed position).
When you move the “drive controller” switch to the “forward” or “reverse” position, the engine speed with go to “extra high idle”, but it will only do so during the first four (4) seconds after pressing the foot switch. At four seconds, the engine speed returns to “low idle”, even though we are continuing to hold the drive controller in the “forward” or “reverse” position – this practically stalls the engine.
This TB60 exhibits the same symptoms when you are operating it from the “ground control panel”.
We are at wits end. As mentioned earlier, we hired some experts to come look at the machine. They examined the machine, but were unsuccessful in pinpointing the problem. They did not charge us anything. We have already replaced the solenoid that moves the idle control arm on the injection pump – no change. We bypassed the connections in the foot switch – no change.
There is a resin filled electrical device on the side rail (see photo) that has little green lights and red lights on it. We have discovered that during the first four (4) seconds that the foot pedal is depressed, the green light is illuminated (as photo depicts). At four (4) seconds however, the green light goes off and the red light becomes illuminated (as other photo depicts).
We have temporarily gotten around the problem by increasing the idle speed using the adjusting screw on the injection pump. This leaves it on “extra high idle” at all times – this allows us to use the machine but we noticed that there is markedly increased fuel consumption when using this approach as a patch.
I am hoping some of the boom lift experts on here can help us out. Let me know if I need to provide any additional info to get this sorted out. This has been a great machine (while it worked, that is!). Thanks in advance!
Attention Snorkel Experts: TB 60 Fast Idle Woes – Please help
We bought this TB 60 with the Deutz diesel engine about 3 years ago. It worked fine for several months. Then we began to have “idle problems” which plagued us for a period of weeks. But then spontaneously the “idle problem” fixed itself and it worked fine for a period of months. Now the “idle problem” is back again with a vengence. We have done our own investigating and “troubleshooting with money”. We even called a local company that repairs heavy equipment. They sent two guys out here but they could not figure it out. It is probably an easy fix. I will attempt to describe the problem.
We have figured out there are three engine speeds:
- “low idle” – for when machine is at rest, with no controls being operated
- “high idle” - for hydraulics to move the boom
- “extra high idle” - to run all four of the hydraulic motors when you want to propel the boom lift
While standing in the platform, when you depress the “foot switch”, then engine speed increases to “high idle”, but it only stays in “high idle” mode for approximately four (4) seconds. At that time, it will return to “low idle” (it does this even though we are holding the foot pedal in the depressed position).
When you move the “drive controller” switch to the “forward” or “reverse” position, the engine speed with go to “extra high idle”, but it will only do so during the first four (4) seconds after pressing the foot switch. At four seconds, the engine speed returns to “low idle”, even though we are continuing to hold the drive controller in the “forward” or “reverse” position – this practically stalls the engine.
This TB60 exhibits the same symptoms when you are operating it from the “ground control panel”.
We are at wits end. As mentioned earlier, we hired some experts to come look at the machine. They examined the machine, but were unsuccessful in pinpointing the problem. They did not charge us anything. We have already replaced the solenoid that moves the idle control arm on the injection pump – no change. We bypassed the connections in the foot switch – no change.
There is a resin filled electrical device on the side rail (see photo) that has little green lights and red lights on it. We have discovered that during the first four (4) seconds that the foot pedal is depressed, the green light is illuminated (as photo depicts). At four (4) seconds however, the green light goes off and the red light becomes illuminated (as other photo depicts).
We have temporarily gotten around the problem by increasing the idle speed using the adjusting screw on the injection pump. This leaves it on “extra high idle” at all times – this allows us to use the machine but we noticed that there is markedly increased fuel consumption when using this approach as a patch.
I am hoping some of the boom lift experts on here can help us out. Let me know if I need to provide any additional info to get this sorted out. This has been a great machine (while it worked, that is!). Thanks in advance!
