System Maintenance: Pump Cam and Bearing
49
SYSTEM MAINTENANCE
TABLE 2.
Pump Seal Kit (P/N 117-0171-657) Replacement Parts
NOTE:
section on page 44 for discharge and intake valve disassembly
and maintenance procedures.
1. Empty product from the chemical supply tank and flush the injection pump with water.
2. Disconnect the injection pump plumbing and cabling. Remove the injection pump from the implement and
take to a suitable work area to perform maintenance.
3. Separate the pump from the motor by removing the four socket head screws.
4. Loosen the four socket head screws securing each pump head to the crank case.
5. Carefully remove the pump heads. While removing the pump heads, take care not to damage the exposed
finish on the piston during disassembly.
6. Remove the slipper seals and O-rings from the pump.
NOTE:
During removal of the piston, the slipper seal and O-rings may stick within the pump housing. Be sure
to remove and inspect the slipper seal and O-rings used with the piston.
The seals and O-rings are made of a chemical resistant compound and should only be replaced with
O-rings supplied by a local Raven dealer.
7. Remove the piston from the pump.
8. Replace the piston and the piston bearings.
9. Replace the seals and O-rings into the pump housing:
NOTE:
Complete one side of the piston and head assembly before starting on the other side.
a. Install slipper seal onto the piston.
b. Using general purpose grease, lubricate the O-ring (item 9) and seat over the slipper seal.
c. Replace pump head O-rings into the pump heads. If the O-rings tend to slip before the head is installed,
use a small amount of additional grease on the O-ring to help hold it in place.
d. Install the pump head to the pump assembly.
e. Repeat the above steps to install the remaining pump head.
10. Tighten socket head screws to 17-24 inch pounds [1.9 - 2.7 Nm].
Item
Description
Raven P/N
Qty.
1
Assembly, Bearing Drive
063-0172-501
1
2
Piston, Injection Pump, 3/4”
107-0172-526
1
3
Seal, Slipper 3/4”
219-0000-125
2
4
O-ring, Buna-N, Black, 3-1/2” ID, 3-11/16” OD
219-0001-153
1
5
O-ring, Viton, Brown Color, 9/16” ID, 11/16” OD
219-0002-467
4
6
O-ring, Viton, Brown Color, 3/4” ID, 7/8” OD
219-0002-018
4
7
O-ring, Viton, Brown Color, .924” ID, 3/4” OD
219-0002-912
4
8
O-ring, Viton, 5/16” ID, 7/16” OD
219-0007-011
4
9
O-ring, Viton, 13/16” ID, 1” OD
219-0007-117
2
10
Bearing, Piston, 3/4”
325-0000-018
2
