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The speed control is a lever that controls the speed for the HST transmission. There is a resistant attached that feeds back to the controller. These have to be adjusted to specification I don't understand the settings in the service manual. I have contacted komatsu service I am waiting for there reply. If I can figure out how to send you the page in the service manual I would.
Hello John I have a Komatsu D66S1 need some help on understanding the potentiometer adjustment numbers in the service manual. It states to get the reference voltage divide by 2=2.498. Output voltage for the speed control lever neutral position. 5Vdd+/-.03 (reference)stroke end .747Vdd +.09 -.03. What should my total voltage be for each?
Hello John, I have a Komatsu PC90 that overheats after an hour. I have changed all cooling related parts. This has not improved it. I currently do have a leaking seal in the hydraulic pump that is causing me to drain the bellhousing daily. After reading your posts, I am wondering if this leaking seal is related to my engine overheating issue. Any guidance would be appreciated. Thanks!
Hello sir I have a Komatsu pc200lc-6, boom an bucket stall the engine. I get error code e215 on the monitor the power line is good i followed from controller to the 2 stage relief solenoid, I think the ground wire does not connect with the controller so is getting ground From somewhere else. Does this affect in any way the activation of the solenoid?
Hey John, can you help me out with a PC300 that has no movements what so ever? Checked the safety solenoid, LS-EPC solenoids, and they are working. What could be the possible cause? P.S we've changed the pump and the same results.
Good evening John. Have you ever seen a pc150lc-6 with no tag at the base of the cab ? Not even holes where the rivits used to hold a tag. Strange. The only tag I can find is the one in my attachment inside the house.
Also I am replacing the Arm/Boom pin, bushings, seals & shims.
Good morning John. The question regarding my PC150lc-6 should be posted. I could see the Komatsu style quick couplings. Looking at the manifold from the compartment door there are 4 of them in a vertical line in the left vertical row. I believe it's the top 4.
Thanks John , I would sure like to have any maintaince info on this machine. It is old and much worn out. The front track idlers are shot but cant afford to replace. Any info would be greatly appreciated.