6
Fig.11
Fig.13
Fig.12
Fig.14
Fig.15
[Assembling the lower pump]
- Assembling the intake valve
11) Insert the ball into the piston. Insert the spring into the union.
Put the washer between the piston and the union, and then
connect each other. This time keep the both edge of the
washer right-angled position against the side of the hexagon
part of the union. Then screw the union with a spanner and fix
to the piston firmly. Bend the both edge of the washer to the
direction to the union. This plays a role of stopper. (Fig.11)
- Assembling the foot valve
12) Insert the intake valve assembly to the suction tube.
(Fig.12)
13) Insert the valve ring, the foot valve and the valve seat in
order of it. Be sure the direction of each part is correct.
(Fig.12)
14) Screw the valve adapter and the tube.
Install the plate with the nut. (Fig.12)
15) Insert the suction tube from opposite side of valve adapter.
Pull out the union from the suction tube and screw it to the
connecting rod of the motor side. Adjust the position of
pin-hole of both the suction and the union, and insert the pin.
(Fig. 6)
16) Screw the suction tube into the crankcase of the upper motor
with hands. Then fix it firmly by a spanner.
[Disassembling the upper motor]
(Fig.13)
17) Remove the packing retainer with tweezers.
18) Remove the packing and the back up ring with tweezers.
19) When replace these to new parts, put little grease on the
packing and install with correct direction.
[Adjusting the relief valve]
(Fig.14)
The relief valve is adjusted its pressure to 28 MPa and fixed in
assembling at factory. Basically adjusting is not necessity.
If the relief valve is loosened by some reason, adjust with the
procedure shown below.
CAUTION
If the following points are not defended, the accident resulting
In injury or death and damage might be caused.
1. Remove the delivery hose and the valve kit, and then install
high-pressure ball vale with pressure gauge (Max. 50 MPa)
instead of the hose and the valve kit.
2. Operate the pump. After checking grease discharge, shut
off the high-pressure ball valve. Adjust the relief valve to
make the pressure gauge points 28 MPa. Tighten the nut
and fix the relief valve firmly.
3.
[Adjusting method without pressure gauge]
One revolution from the position where the bolt touched the
guide increases relief pressure approx 26 MPa. Screw the
bolt 30 degree more, then tighten the nut and fix the bolt.
(Fig.15)