(a) Install elbow (18) in spray boom.
(c) Connect remaining hoses (8) together and
(b) Install nipple (17) into elbow.
attach to ball valve (2), using appropriate couplers (4)
(c) Attach nozzle (16) to nipple. Tighten
and nipples (5).
parts snug only.
(2) Remove the warning tag attached to the
Note:
engine, which reads: "Caution: Prior to starting the
engine, the spark plug shall be removed and the engine
Boom tubes have holes for 30 nozzles each.
turned over several times to eliminate possibility of
If nozzles are not required for all holes,
hydrostatic lock.
use plug (32) in holes not used.
CAUTION
(d) Position all nozzles so that spray orifices
Do not pull starter cord out to end, or let it
face down and forward.
snap back by itself.
(2) Attach synchromatic windmill assembly (24) to
(3) Remove spark plug from engine. Using the
pump and brake assembly of tank installation (29) as
starting cord, turn the engine over several times.
follows:
(a) Remove nut (21), washer (22), and bolt
CAUTION
(23) used to hold windmill assembly together for shipping
Do not allow pump engine to run for more
or storage.
than a few minutes without pumping fluid.
CAUTION
b(5) for pump priming procedures.
Do not overtighten bolts when attaching
(4) Install spark plug and start engine using steps
windmill fan to pump and brake
described in paragraph 2-5, step b.
Allow pump to
assembly.
run for about 30 seconds.
(b) Attach windmill assembly to pump and
4-3. Installation
brake assembly using three bolts (20). Use a 3/8-inch
a. Install the insecticide sprayer into the UH-1B or
socket wrench to tighten the attachment bolts. Tighten
UH-1D helicopter, using figure 4-2 and the following
bolts snug only.
steps as a guide:
b. Assemble and Test Liquid Loading System.
Note:
Assemble the liquid loading system and test run the
Installation is identical for UH-IB or UH-ID
pump engine using the following steps as a guide:
helicopter models, except where noted.
(1) Assemble the liquid loading system, using
(1) Remove tiedown lugs (28) from skid base
(13, fig. 4-1).
(a) Remove dust plugs and caps from the
(2) Place tiedown lugs on studs in cargo deck
respective valved coupler (4) and valved nipple (5).
of the helicopter. See figure 4-3 (UH-1B) or figure 4-4
(b) Attach hose (8), connected to suction pipe
(UH-1D) to find correct stud locations.
(9), to strainer assembly (11).
4-6
