Gear Pump; Disassembling The Gear Pump Housing - Yamaha E115A Service Manual

Disassembling the gear pump hous-
ing
1. Remove the bolts 1 and gear pump
housing 2.
3
3
4
1
NOTE:
Make sure that the O-rings 3, valve pin 4,
and valve seat assembly 5 are removed.
2. Remove the filters 6, down-relief valve
7, and O-ring 8 from the gear pump
housing.
6 7
8
6
6
NOTE:
Use compressed air to remove the filter deep
inside of the gear pump housing, and be
careful not to blow the filter out abruptly.
61U5H11
5
2
1
1
61U70170
61U70370
3. Remove the bolts 9, gear pump cover
0, drive gear q and driven gear w.
9
w
NOTE:
Make sure that the shuttle pistons e and
balls r are removed, so that they tend to
stick to the gear pump cover.
4. Remove the up-relief valve assembly t
and balls.
t

Gear pump

1
0
2
q
r
e
3
4
61U70180
5
6
7
8
61U70380
9
7-44