Assembling The Gear Pump Housing - Yamaha F150A Service Manual

9
8
6
5
7
A
a
9
A. Up-relief valve
B. Down-relief valve
Installation height "a" (reference data):
1.63–1.83 mm (0.064–0.072 in)
Installation depth "b" (reference data):
1.77–2.27 mm (0.070–0.089 in)

Assembling the gear pump housing

Lubricate the parts using ATF Dexron II dur-
ing assembly.
When assembling the PTT unit, do not use
a rag. Otherwise, dust and particles could
get on the PTT unit components, causing
poor performance.
1. Install new O-rings "1", "2", and "3" to the
main valves "4".
2. Install a new O-ring "5" to the shuttle pis-
ton "6".
3. Install the shuttle piston "6" and main
valves "4", and then tighten the main
valves "4" to the specified torque.
4
3
2
1
B
b
4
9-60
4
1
2
3
Main valve "4":
11 N·m (1.1 kgf·m, 8.1 ft·lb)
4. Install the manual valve seat "1", spring
"2", adapter "3", spring "4", and manual
valve seat "5".
5. Install a new O-ring "6" to the manual
valve "7", and then install a new O-ring
"8", manual valve "7", and circlip "9".
6. Tighten the manual valve "7" to the spec-
ified torque.
8
6
7
9
1
2
3
4
5
Manual valve "7":
3 N·m (0.3 kgf·m, 2.2 ft·lb)
7. Install the ball "1" and plug "2", and then
tighten the plug "2" to the specified
torque.
PTT gear pump
4
5
6
3
1
2
0
1
2
3
4
5
6
7
8
9
10
A