ZEROTANGO
New Member
Adding oil to the cueing mechanism of a Yamaha PF-800 and PF-1000 turntable
When it came time to resolve the issue with a rapid descent of the tonearm, instructions were not available. The service manual is of little help. Here are some Instructions that I have made for others that will eventually need to do so. Method 1 is a quick way to add oil without inspection. Method two involves removing the tone arm for inspection and cleaning.
When activating the cueing mechanism a signal is sent to a solenoid which retracts a lever, a cylinder shaft drops the tonearm onto the disc. To slow this process a thick and viscous oil surrounds the shaft and decreases the rate of descent. When the cueing is activated again the solenoid is depressed the lever and a spring resurfaces the tonearm.
Tools and supplies that you will need:
3mm Allen wrench
1.5mm Allen wrench
Needle nose pliers
Empty jar to hold tonearm in place (Not needed in method 1)
30, 000WT or 50,000WT silicon diff oil (Availabe at radio controlled car shop or online)
Method one, the easy way:
Remove dust cover. Remove headshell and cartridge to prevent possible damage if the tone arm swings away while manipulation.
Attach the tone arm across the receiver, it will prevent swaying.(see picture)
To remove the Allen cap screw that holds the tone arm rest hold the shaft with needle nose pliers. With a 1.5mm allen wrench remove the screw. Set aside. (See picture)
If the cylinder reservoir is empty fill with 30,000WT silicon oil. You could also try the 50,000WT, the 30,000WT is a little fast. Fill to the mini plug level on the side. Do not Overfill. (See picture)
Depress the shaft several times to distribute the oil evenly
Wait several hours for the oil to effectively slow the rate of descent.
Re-install arm rest and screw.
Re-install headshell and cartridge
Re-install dust cover
Method two, Inspection and cleaning:
Remove the three Allen cap screws with the 3mm wrench. (See picture)
Gently Pull aside the tone arm assembly remove the ground wire. With a pair of pliers remove the two quick connections. Do not pull on the wires.
Place Tone arm assembly on top of a jar.
Now is the perfect time to clean and inpect the cavity of the deck. If the cavity of the deck is filled with oil the rubber washer may be dried out or damaged and will need to be replaced. Further dissasembly of the shaft will be required by removing the black cross lever, spring and shaft.
You can continue to dissasemble the upper tray to get to the motor, speed and pitch controls etc.
To remove the Allen cap screw that holds the tone arm rest, push the spring aside and hold the shaft with needle nose pliers. With a 1.5mm allen wrench remove the screw. Set aside. (See picture)
If the cylinder reservoir is empty fill with 30,000WT silicon oil. You could also try the 50,000WT, the 30,000WT is a little fast. Fill to the mini plug level on the side. Do not Overfill. (Same as method 1)
Depress the shaft several times to distribute the oil evenly
Wait several hours for the oil to effectively slow the rate of descent.
Re-install arm rest and screw.
Re-install ground wire and the two quick connectors
Re-install tonearm assembly
Re-install headshell and cartridge
Re-install dust cover
While you are at it, it is a good time to do other maintenance like re-lubing the idler shaft under the tray with sewing machine oil, removing dust under the tabble tray, cleaning the speed potentiometers. Dust kills electronics if a spark jumps around as the dust acts as a conductor.
When it came time to resolve the issue with a rapid descent of the tonearm, instructions were not available. The service manual is of little help. Here are some Instructions that I have made for others that will eventually need to do so. Method 1 is a quick way to add oil without inspection. Method two involves removing the tone arm for inspection and cleaning.
When activating the cueing mechanism a signal is sent to a solenoid which retracts a lever, a cylinder shaft drops the tonearm onto the disc. To slow this process a thick and viscous oil surrounds the shaft and decreases the rate of descent. When the cueing is activated again the solenoid is depressed the lever and a spring resurfaces the tonearm.
Tools and supplies that you will need:
3mm Allen wrench
1.5mm Allen wrench
Needle nose pliers
Empty jar to hold tonearm in place (Not needed in method 1)
30, 000WT or 50,000WT silicon diff oil (Availabe at radio controlled car shop or online)
Method one, the easy way:
Remove dust cover. Remove headshell and cartridge to prevent possible damage if the tone arm swings away while manipulation.
Attach the tone arm across the receiver, it will prevent swaying.(see picture)
To remove the Allen cap screw that holds the tone arm rest hold the shaft with needle nose pliers. With a 1.5mm allen wrench remove the screw. Set aside. (See picture)
If the cylinder reservoir is empty fill with 30,000WT silicon oil. You could also try the 50,000WT, the 30,000WT is a little fast. Fill to the mini plug level on the side. Do not Overfill. (See picture)
Depress the shaft several times to distribute the oil evenly
Wait several hours for the oil to effectively slow the rate of descent.
Re-install arm rest and screw.
Re-install headshell and cartridge
Re-install dust cover
Method two, Inspection and cleaning:
Remove the three Allen cap screws with the 3mm wrench. (See picture)
Gently Pull aside the tone arm assembly remove the ground wire. With a pair of pliers remove the two quick connections. Do not pull on the wires.
Place Tone arm assembly on top of a jar.
Now is the perfect time to clean and inpect the cavity of the deck. If the cavity of the deck is filled with oil the rubber washer may be dried out or damaged and will need to be replaced. Further dissasembly of the shaft will be required by removing the black cross lever, spring and shaft.
You can continue to dissasemble the upper tray to get to the motor, speed and pitch controls etc.
To remove the Allen cap screw that holds the tone arm rest, push the spring aside and hold the shaft with needle nose pliers. With a 1.5mm allen wrench remove the screw. Set aside. (See picture)
If the cylinder reservoir is empty fill with 30,000WT silicon oil. You could also try the 50,000WT, the 30,000WT is a little fast. Fill to the mini plug level on the side. Do not Overfill. (Same as method 1)
Depress the shaft several times to distribute the oil evenly
Wait several hours for the oil to effectively slow the rate of descent.
Re-install arm rest and screw.
Re-install ground wire and the two quick connectors
Re-install tonearm assembly
Re-install headshell and cartridge
Re-install dust cover
While you are at it, it is a good time to do other maintenance like re-lubing the idler shaft under the tray with sewing machine oil, removing dust under the tabble tray, cleaning the speed potentiometers. Dust kills electronics if a spark jumps around as the dust acts as a conductor.
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