Nelson Irrigation Corporation 848 Airport Road Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: [email protected] Web site: www.nelsonirrigation.com
SRNV100 BIG GUN
®
ADJUSTMENT
8/01
item
part number
description
qty.
1
8506
Nut, 7/16-14 UNC
1
2
8469
Valve Seat Assembly
1
3
8510
Nozzle Lever Assembly
1
4
6124
Cotter Pin, 3/32 x 3/4
8
5
7263
Pivot Pin
1
6
6110
Flat WasherAR
7
6110-001
Flat Washer (Thick)
AR
8
7264
Lower Toggle Pin
1
9
7265
Upper Toggle Pin
1
10
7719
Linkage Assembly
1
11
7297
Actuator Pin
1
12
7296
Jam Nut
1
13
7797
Washer1
14
7276
Actuator Assembly
1
PROBLEM:
Nozzle stopper (valve seat) continues to leak when closed.
SOLUTION:
1. Adjust valve seat to assure even contact on nozzle seal surface.
a. Disconnect actuator pin .
b. Loosen the valve seat locking nut .
c. Rotate lever assembly to closed position and hold valve seat
lightly against nozzle seal surface. Adjust valve seat by rotating the
stopper in or out as required to achieve full contact with the nozzle seal surface.
d. Tighten the locking nut .
2. Adjust linkage to assure adequate closure force.
a. Adjust linkage assembly at A so that 12-15 pounds force is required to
push link B against closure stop (disconnect and reconnect lower toggle
pin during adjustment as required to check closure).
b. Reconnect actuator pin .
PROBLEM:
Nozzle stopper wont clear stream when open.
SOLUTION:
Adjust actuator position to assure complete opening.
a. Loosen jam nut
.
b. Hold nozzle lever in the fully open rest position.
c. Rotate actuator assembly toward main elbow until rest buttons contact
and all play is removed from the linkage. Rotate further as needed until
drain hole and hose fitting port are oriented to the bottom.
d. Tighten jam nut
.
