9-58
PTT gear pump
0
1
2
3
4
5
6
7
8
9
10
A
A. Up-relief valve
B. Down-relief valve
2.
Remove the bracket “1” and O-rings “2”
and “3”.
3.
Remove the gear housing “1”, and then
remove the drive gear “2”, driven gear
“3”, balls “4”, and pins “5”.
4.
Remove the valve seat “1” and O-ring “2”.
Checking the gear pump
1.
Check the drive gear and driven gear.
Replace the gear pump assembly if dam-
aged or worn.
2.
Check the up-relief valve and down-relief
valve. Clean if there is dirt or residue.
Checking the gear pump housing
1.
Check the PTT body. Replace if corroded
or cracked.
Checking the valve seal
1.
Check the main valves and the shuttle
piston. Replace if damaged.
2.
Check the manual valve, manual valve
seat, adapter, and springs. Replace if
damaged.
Checking the filter
1.
Check the filters. Clean if there is dirt or
residue.
A
B
1
2
a
b
2
1
3
4
5
6
7
8
1
2
3
1
2
3
4
5
5
1
2
Summary of Contents for F150A
Page 1: ...SERVICE MANUAL 63P 28197 3P 12 F150A FL150A F150B FL150B ...
Page 4: ......
Page 48: ...2 3 Electronic control system Engine ECM component 2 3 4 6 5 1 8 7 10 9 11 12 14 15 16 13 17 ...
Page 110: ...3 41 Propeller selection MEMO ...
Page 129: ...4 18 Outboard motor troubleshooting MEMO ...
Page 175: ...5 44 PTT system 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 247: ...7 22 Starter motor Terminal nut 3 9 N m 0 9 kgf m 6 6 ft lb ...
Page 385: ...8 78 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 449: ...9 62 PTT gear pump 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 474: ...i 8 Index 0 1 2 3 5 6 7 8 9 10 10 A MEMO ...
Page 475: ......
Page 476: ...Oct 2011 2 ABE E ...