Yamaha F150A Service Manual

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9-37PTT unit14. Repeat steps 2–4 to check the fluid level.15. Connect the battery jumper leads to thePTT motor lead “1” to fully retract thePTT rams, and then measure the hydrau-lic pressure when the reading on thepressure gauge stabilizes.16. Reverse the connection between batteryjumper leads and the PTT motor lead “1”to fully extend the PTT rams.17. Remove the special service tools.Be careful when removing the special ser-vice tool. Fluid could be expelled force-fully from the PTT unit due to internalpressure.18. Install the main valve “1”, and thentighten it to the specified torque.TIP:Install the main valve “1” quickly before anyfluid flows out of the hole.19. Repeat steps 2–4 to check the fluid level.Bleeding the PTT unit1. Place the PTT unit in an upright position.2. Turn the manual valve “1” clockwise toclose it.PTT hydraulic gauge adapter “1”:90890-06863Hydraulic pressure gauge “2”:90890-06776/06800Hydraulic pressure (down):5.85–8.85 MPa(58.5–88.5 kgf/cm2 ,848.3–1283.3 psi)Ram PTT motor lead BatteryRetract Green (G) (+)Blue (L) (–)12LG1Ram PTT motor lead BatteryExtend Blue (L) (+)Green (G) (–)Main valve “1”:11 N·m (1.1 kgf·m, 8.1 ft·lb)L G11