banjodunn
Veteran Member
G'day all just had a couple of interesting ones in the workshop this week that I thought I might share it may help others out
1st a TM 125 with Pto not working went down to the property with a spare EMU and Pto switch (usual culprits) checked switch and found to be out of specs so plugged in new one, no go so replaced EMU and still no go , so went through the proccess of checking solenoids and wiring etc and after about 15 min it dawned on me to check the alternator output and what do you know no output from a 2 month old alt:duh:,EMU needs to see a voltage above 13v to know the engine is running. Fitted new alt today and old EMU and no probs, tried old switch but it was cactus just a coincidence I suppose.
2nd a 7740 with a 16x16 trans would not move in the paddock but had all hyd functions until you put it into gear and then it would lose everything, first guess was the tourque drive plate at the flywheel so got it towed into w/shop and cleaned down thought we had better just do a quick check of the pressures before we went any further and found something odd we had the correct amount of line pressure but clutch pressures down to nearly nothing. Thinking a major int leak behind valve body we pulled the valve bank off and stripped down and still nothing standing out. So after 10 min of scratching head and looking through the book we looked in at the lube control valve into the rear clutch packs and no plug, valve or springs the circlip had broken and let the valve out into the bottom of the trans. After an hour or so of fishing around with inspection camers and magnet got it all but one tip of the circlip, unfortunatelt the spool has been damaged but will let you know if this fixes it when the parts arrive.
Jon
1st a TM 125 with Pto not working went down to the property with a spare EMU and Pto switch (usual culprits) checked switch and found to be out of specs so plugged in new one, no go so replaced EMU and still no go , so went through the proccess of checking solenoids and wiring etc and after about 15 min it dawned on me to check the alternator output and what do you know no output from a 2 month old alt:duh:,EMU needs to see a voltage above 13v to know the engine is running. Fitted new alt today and old EMU and no probs, tried old switch but it was cactus just a coincidence I suppose.
2nd a 7740 with a 16x16 trans would not move in the paddock but had all hyd functions until you put it into gear and then it would lose everything, first guess was the tourque drive plate at the flywheel so got it towed into w/shop and cleaned down thought we had better just do a quick check of the pressures before we went any further and found something odd we had the correct amount of line pressure but clutch pressures down to nearly nothing. Thinking a major int leak behind valve body we pulled the valve bank off and stripped down and still nothing standing out. So after 10 min of scratching head and looking through the book we looked in at the lube control valve into the rear clutch packs and no plug, valve or springs the circlip had broken and let the valve out into the bottom of the trans. After an hour or so of fishing around with inspection camers and magnet got it all but one tip of the circlip, unfortunatelt the spool has been damaged but will let you know if this fixes it when the parts arrive.
Jon
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