Diaphragm Replacement

Tools or Supplies Required

♦	1/4 Allan wrench	♦	4-45-3 Pressure cap	♦	Torque Wrench	♦	3/8” Open end wrench

♦	1/8 Allan wrench	♦	H.E.R.O. hydraulic oil	♦	Rags	♦	Drip / collection tray

		D*	B*
F*	C*	C*

Items marked

with * are included in 4-22CRK Repair Kit

Small steel Plate “E”

Large steel Hub “A”

1.Tilt unit up onto its’ nose ( resting vertically on handle, ref# 130). See Fig. 1, page 27.

2.Remove the eight bolts ( ref# 17) securing the paint head ( ref# 18) to the hydraulic head ( ref# 53).

3.Remove diaphragm ( ref# 51) from the hydraulic head.

4.If the diaphragm’s metal hubs are rough or sharp, replace with complete diaphragm. Continue at step 11.

5.If the diaphragm’s hubs are smooth and unworn, replace with repair kit ( ref# 52).

6.Dismantle old diaphragm.

7.Slide “large” steel hub (A) onto new screw (B) provide in kit. The screw should fit in counter sunk hole, leaving the flat side of hub facing away from screw head.

8.Thread the small nylon disc (C), diaphragm pad (D) and second small disc (C) onto the screw. There is no correct side to the pads. They MUST be threaded on to avoid leakage due to the hole being enlarged.

9.Slide the smaller hub (E) onto the screw, being certain the beveled edge of the plate is next to the nylon pads. During operation the diaphragm flexes over the beveled edge. If reversed, ( flat edge against diaphragm ) the diaphragm will be cut on the sharp edge while in operation. Thread on and tighten nut (F), supplied in kit. DO NOT re-use old nut.

10.Fill the hydraulic head cavity with genuine H.E.R.O. hydraulic oil, before placing diaphragm onto hydraulic head.

11.Place new or repair diaphragm onto hydraulic head with the large hub facing up ( Screw head visible ). Ensure diaphragm is centered and within the hydraulic head’s recessed area.

12.Place paint head / endcap assembly onto the hydraulic head. Ensure correct orientation.

13.Install mounting bolts, and using a criss-cross pattern, tighten bolts to 30 foot pounds.

14.Purge hydraulic oil system per instructions on page 19.

♦The diaphragm will take on a wrinkled or puckered appearance almost immediately after operation begins. Do Not be concerned by this. A diaphragm requires replacement when hydraulic oil appears in the spray material. Annual replacement of the diaphragm is recommended as part of your preventive maintenance procedures.

H.E.R.O. INDUSTRIES

300S / 300SL LEGEND Owner’s Manual

300S Legend specifications

I.C.T.C. Holdings Corporation has earned a distinct reputation in the aviation industry with its flagship product, the 300S Legend. This advanced aircraft represents a significant leap forward in design and technology, combining performance, comfort, and cutting-edge features.

One of the most notable characteristics of the 300S Legend is its impressive aerodynamic efficiency. This aircraft incorporates a sleek fuselage design paired with advanced wing technologies, which contribute to enhanced stability and fuel efficiency. The wings are crafted from lightweight composite materials, enabling the 300S Legend to achieve superior lift during takeoff and landing.

The cockpit of the 300S Legend is a testament to modern aviation engineering. It is equipped with a state-of-the-art avionics suite that includes touchscreen displays, providing pilots with intuitive controls and easy access to flight data. The integration of advanced navigation systems ensures precise routing and enhanced safety, allowing pilots to operate the aircraft with confidence in various weather conditions.

In terms of performance, the 300S Legend is powered by cutting-edge engines that deliver exceptional thrust while minimizing fuel consumption. This not only extends the aircraft's range but also reduces operational costs, making it an attractive choice for commercial operators. The powerplant features advanced noise reduction technologies, ensuring compliance with stringent environmental regulations and providing a quieter cabin experience for passengers.

The interior of the 300S Legend is designed with passenger comfort in mind. The cabin boasts spacious seating arrangements, with customizable configurations to suit different missions, whether it be corporate travel or cargo transport. Large windows provide ample natural light, creating an inviting and comfortable atmosphere. The use of premium materials and finishes further enhances the overall experience, making travel not only efficient but also enjoyable.

Safety is paramount in the design of the 300S Legend, which is equipped with redundant systems and advanced safety features that meet and exceed regulatory requirements. Enhanced turbulence prediction systems and advanced autopilot functionalities contribute to a secure flying experience, ensuring that both passengers and crew are protected throughout the journey.

In conclusion, I.C.T.C. Holdings Corporation's 300S Legend combines innovative technologies with outstanding design to redefine the standards of modern aviation. Its commitment to performance, safety, and passenger comfort positions it as a leading choice for those seeking a versatile and reliable aircraft.

I.C.T.C. Holdings Corporation 300S Legend owner manual Diaphragm Replacement

Models: 300S Legend