AIR SL4200 Parts No: 3100097 Air Tank (Medium) Over rear suspension Parts No: 3100096 Air Tank (Small) Over rear suspension Parts No: 3100231 5 Port 4 Way Gate Valve Rear drivers side This valve operates the gates and is equipped with a manual over ride. This valve is normally closed. Parts No: 3100361 5 Port 4 Way Control Valve Rear drivers side This valve dumps the air in the suspension and is equipped with a manual over ride. This valve is normally open. Parts No: 3100147 Air Control Kit Rear suspension This air control kit is the manual dump valve on the trailer.
Parts No: 3100118 Quick Release Valve On the Inside of the chassis, near the center of the trailer. This valve provides a direct air exhaust to speed up the air suspension dump function. Part No: 3100117 Spring Brake Control Valve This valve is attached to the brake system reservoir tank over the rear suspension. Part No: 3100194 6 Port ABS Relay Valve This valve is attached to the brake system reservoir tank over the rear suspension. Part No: 3100373 3" Composite Cylinder Inside gate post Starting in April 2007 Midland end dump trailers are using individual composite cylinders mounted in each gate post instead of the old style trip with the centrally mounted air pod. This is the 3" composite cylinder used in the new trip. Part No: 3100122 Brake Chamber under the body This brake chamber is part of the old style gate trip used prior to April 2007. It controls the opening of the gate.
ELECTRICAL Parts No: 3500371 PLC Select Relay Valve This valve is attached to the brake system reservoir tank over the rear suspension. This valve controls the ABS function of the trailer. Part No: 3500221 7 Wire Pole Plug This plug supplies power to the trucklite harness on the trailer. Part No: 3500022 7-Pole Plug w/ Guard This plug supplies power to all auxiliary functions on the trailer.
BODY Part No: 3900180 Tailgate Tightener Assembly This tailgate tightener are used to seal the gate closed. Part No: 3900258 Rubber seal (P Seal) This rubber seal is used to insure a water tight tailgate seal. Part No: 3900066 Rubber Spring ( LARGE ) At the base of the "A" frame in the front of the trailer. This rubber spring lifts the body off the frame during empty travel Part No: 3900307 Gate Hinge Pin Top hinge of the gate Part No: 3900315 Top Cylinder Pin (18.5") On the cylinder; at the front of the trailer This cylinder pin is used to secure the top of the cylinder.
Part No: 6021034 Hyva Cylinder Pin (18.83) On the cylinder; at the front of the trailer This cylinder pin is used to secure the top of the cylinder. It is only used on Hyva cylinders.
CHASSIS Part No: 3900194 Galvanized Fender (66") Right and left rear of trailer Part No: 3900329 Black Poly Fender Right and left rear of trailer Part No: 6021268 Left Trip Weldment Inside gate post Starting in April 2007 Midland end dump trailers are using individual composite cylinders mounted in each gate post instead of the old style trip with the spring and air pod. This is the trip weldment that this composite cylinder (3100373) mounts to. Part No: 6021269 Right Trip Weldment Inside gate post Starting in April 2007 Midland end dump trailers are using individual composite cylinders mounted in each gate post instead of the old style trip with the spring and air pod. This is the trip weldment that this composite cylinder (3100373) mounts to. Part No: 4027552 Latch Finger Inside gate post Starting in April 2007 Midland end dump trailers are using individual composite cylinders mounted in each gate post instead of the old style trip with the spring and air pod. This latch finger is used in the new trip.
Part No: 6021277 Trip Pin Inside gate post Starting in April 2007 Midland end dump trailers are using individual composite cylinders mounted in each gate post instead of the old style trip with the spring and air pod. This is the trip pin used to secure the composite cylinder (3100373) to the trip weldment. Part No: 6016854 Left Bracket Trip Weldment Inside the gate post This is the trip weldment that was used prior to April 2007 and used to mount the air pod inside the gate post. Part No: 6016856 Right Bracket Trip Weldment Inside the gate post This is the trip weldment that was used prior to April 2007 and used to mount the air pod inside the gate post. Part No: 3900117 Springs For Air Trip Inside the gate post This is the spring used in the gate trip prior to April 2007. Part No: 4024914 Latch Finger Inside the gate post This is the latch used in the gate trip prior to April 2007.
Part No: 6015876 Clevis Weldment Inside the gate post This clevis weldment is used on the trip prior to April 2007. It is used to secure the brake chamber (3100122) to the trip weldment (601854/56) Part No: 3900028 Machined Rod End (1/2") under the body This rod end is used to hold the spring in place in the old gate trip used prior to April 2007. Part No: 3900232 Clevis Pin Inside gate post This clevis pin is used to secure the latch finger (3900232) to the trip weldment (6016854/56) in the old gate trip used prior to April 2007. Part No: 6015825 Hinge Assembly Part No: 3900320 Hinge Pin (9.13") This pin is used in the hinge assembly (6015825)
Part No: 3900316 Bottom Cylinder Pin (19.75") On the cylinder This cylinder pin is used to secure the bottom of the cylinder. Part No: 4027167 Dump Valve Mounting Bracket Rear drivers side inside the frame of trailer This bracket is attached to inside rear frame and mounts the 5 port dump valve (3100363). Part No: 6019555 Hinge Bushing This bushing contains 3 composite bearings (3912877). It is used to mount the hinge assembly (6015825). Part No: 3912877 Composite Bearing (2.01 x 1.51) Inside the bushings of the hinge assembly This is a greaseless bearing that is installed in the hinge assembly bushings (6015285/6016688). Part No: 3900240 Composite Bearing (1.25" x 1.435") Inside the gate hinge assembly at the rear of the trailer This is a greaseless bearing that fits inside the gate hinge assembly welded to the body.
Part No: 6019965 Light Bar Part No: 3900335 Control Box This control box holds the dump valve (3100361) and the gate over ride valve (3100231). Part No: 4023970 Light Bar Shed This light bar shed is used to protect the light bar (6019965) at the rear of the trailer. Part No: 4023945 Light Bar Shed This light bar shed is used to protect the light bar (6019965) at the rear of the trailer. Part No: 5012025 Mud Flap Strip Backing On all trailer mounted mud flaps This bracket is to secure all mud flaps to the trailer.
Part No: 3900022 Midland Mud Flap (24" x 30") Part No: 3900020 Black Mud Flap (24" x 30") At the Front or middle of the trailer
HITCH Part No: 3900117 Hitch Springs This spring is used on the hitch of the trailer to give tension on the hitch making it easier to lift and adjust. Part No: 4011915 Washer This washer is used to secure the pintle eye (3900012) onto the hitch. Part No: 3900017 Neoprene Bushing This is the bushing used on the pintle eye (3900012). Part No: 3900012 Pintle Eye Part No: 6021213 Jack Assy. This jack is used on the hitch and is used to adjust the hitch to your desired height.