7
Service Procedures ______________________________________________________________
Servicing Sprinkler Mechanism
Note:
Refer to
Figure 13
for the following procedure.
1. Remove the cap screw (1) and cap (2).
Note:
During reassembly, ensure the cap is correctly installed with the Toro Logo positioned over the main nozzle (10).
2. Insert the hooked end of the multi-purpose tool (P/N 995-83) into the snap ring slot (3). Pull the snap ring inward towards the
sprinkler assembly, then upward to remove from the groove in body.
Note:
During reassembly, ensure the snap ring is correctly installed and fully seated in the sprinkler body.
3. Insert the hooked end of the tool into the slot provided in the nozzle base above the right intermediate nozzle (9). Pull the riser
assembly until enough clearance to handle. Hold onto the riser body (13) and carefully extract it from the sprinkler body.
CAUTION: The seal/retainer (4) will eject (caused by the decompressing spring [5]) as it clears the sprinkler body.
4. Three small tabs are provided on the edge of the multi-purpose tool. Insert tabs into the debris filter screen (17). Holding the
plastic base of riser assembly, turn the screen counterclockwise to remove.
5. Remove the variable stator (16) from riser assembly.
6. Loosen the drive assembly retaining screw (14) 6–7 turns and pull the drive assembly (15) using a pair of pliers. See
Figure 14
.
Note:
Do not remove the retaining screw completely as it is easily misplaced.
CAUTION: When removing or installing the drive assembly, do not use the turbine to pull the drive assembly. Use the
drive assembly body to extract it out. Failure to comply may cause separation of the drive assembly components.
Note:
During reassembly, ensure drive assembly is properly aligned with the retaining screw.
7. Using a 5/8" nut driver (P/N 995-99), unscrew main nozzle (10) from nozzle base assembly.
8. Using a 5/16" nut driver (P/N 995-105), unscrew the inner (8) and intermediate (9) nozzles.
9. Thoroughly clean and inspect all parts and replace as necessary. Reassemble in reverse order.
10. When installing the riser assembly to the sprinkler body, align the ratchet ring with the inside body rib. Use the indicator on top of
the sprinkler body to center the ratchet ring. See
Figure 15
.
2
13
15
16
17
1
3
4
5
6
12
14
8
10
11
9
7
Figure 13
Figure 14
WARNING
NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED, DURING
MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES. DIRECT
CONTACT WITH IRRIGATION SPRAY, A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR
SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY.
Figure 15
