TC2000. This control box is typically located in the cab of the truck and the cable runs back to the auxiliary plug at the front of the trailer.

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Harvey Berry
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ELECTRICAL TC2000 Part No: 3500128 Air Ride Control Box With 30 ft.

the front of the trailer This control is designed to operate the auxiliary/non light functions of the trailer.

Part No: 3500127 Spring Ride Control Box with 30 ft.

the trailer. To operate the control add 12 volt power and plug the cable into the auxiliary plug at the front of the trailer.

This 3 amp switch operates the air suspension dump function.

1 ELECTRICAL TC2000 Part No: Air Ride Control Box With 30 ft. Cable This control box is typically located in the cab of the truck and the cable runs back to the auxiliary reverse ground plug at the front of the trailer This control is designed to operate the auxiliary/non light functions of the trailer. To energize the control add 12 volt power and plug the cable into the auxiliary reverse ground plug on the front of the trailer. Part No: Spring Ride Control Box with 30 ft. Cable This control box is typically located in the cab of the truck and the cable runs back to the auxiliary plug at the front of the trailer. To operate the control add 12 volt power and plug the cable into the auxiliary plug at the front of the trailer. Part No: Switch Rocker For In Cab Controls In the aluminum box of the "In Cab" control. This 3 amp switch operates the air suspension dump function. Part No: Toggle Switch In the aluminum box of the "In Cab" control. This 15 amp switch operates the dump and close function of the trailer. Part No: Control Box Rear drivers side of trailer This is a hand control and is used by an operator walking alongside the trailer allowing him to open and close the clam gates in infinite settings discharging product. This control overrides the "In Cab" control.

Part No: 3500119 Contact Element Switch (green) Inside the Control Box This Contact Element

The green switch is the replacement for the open function button.

red switch is the replacement for closed function button.

switch when activated by the gate knock out pin, cuts air supply to the gate cylinders and

Part No: 3500273 Port Relay Valve This valve is attached to the brake system reservoir tank over

2 Part No: Contact Element Switch (green) Inside the Control Box This Contact Element Switch is a replacement switch for the Control box ( ). The green switch is the replacement for the open function button. Part No: Contact Element Switch (red) Inside the Control Box This Contact Element Switch is a replacement switch for the Control box ( ). The red switch is the replacement for closed function button. Part No: EGS Limit Switch Typically on the rear driver side clam gate hanger pin This switch when activated by the gate knock out pin, cuts air supply to the gate cylinders and limits the gate opening to a preset increment. Part No: Port Relay Valve This valve is attached to the brake system reservoir tank over the rear suspension. This valve controls the ABS functions the trailer. Part No: Pole Socket Split 6-Ways Front bumper of trailer This plug supplies power to the auxiliary functions of the trailer.

Part No: 3500265 Front Rear Trucklite Pole Socket Split 7 Ways Front and

3 Part No: Front Rear Trucklite Pole Socket Split 7 Ways Front and rear of trailer This plug supplies power to the trucklite harness on the trailer.

AIR Part No: 3100098 Air Tank (Large) At the rear of the clam shell trailer This tank is

Part No: 3100097 Air Tank (Medium) Over rear suspension Part No: 3100096 Air Tank (small)

valve dumps the air suspension and is equipped with a manual over ride.

4 AIR Part No: Air Tank (Large) At the rear of the clam shell trailer This tank is the reservoir for the clam shell gate cylinders. Part No: Air Tank (Medium) Over rear suspension Part No: Air Tank (small) Over rear suspension Part No: Port 4 Way Control Valve Rear drivers side This valve dumps the air suspension and is equipped with a manual over ride. This valve is normally open. Part No: Spring Brake Control Valve This valve is attached to the brake system reservoir tank over the rear suspension.

Part No: 3100314 Mac Valve At the rear driver side, bolted to the side of the body frame The Mac Valve is made up of two

This Valve provides infinite gate opening settings for the clam shell gates.

Big Mac assembly. The Top of the Big Mac Valve is connected to the Mac Valve (3100314).

the Top of the Mac Valve (3100317). This valve is an electric over air solenoid valve used to dump the air ride suspension.

Part No: 3100106 Mac Wash Down Valve At the rear driver side, bolted to the side of the body frame This Valve is part of the Mac

5 Part No: Mac Valve At the rear driver side, bolted to the side of the body frame The Mac Valve is made up of two components the Top of the Mac valve ( ) being the main component and the body. This Valve provides infinite gate opening settings for the clam shell gates. Part No: Top of the Big Mac Valve At the rear driver side, bolted to the side of the body frame This valve is part of the Big Mac assembly. The Top of the Big Mac Valve is connected to the Mac Valve ( ). This Valve provides infinite gate opening settings for the clam shell gates. Part No: Mac Pilot Valve At the rear driver side, bolted to the side of the body frame The Mac Pilot Valve is connected to the Top of the Mac Valve ( ). This valve is an electric over air solenoid valve used to dump the air ride suspension. This Valve has been replaced by the Ride Air valve on 2007/2008 trailers. Part No: Mac Wash Down Valve At the rear driver side, bolted to the side of the body frame This Valve is part of the Mac Valve assembly, it is connected to the Base of the Mac Valve ( ).. Part No: Wilkerson Lubricator At the rear driver side, bolted to the side of the body The lubricator supplies oil to the air cylinders. The flow of oil into the air stream is adjustable.

Part No: 3100101 Wilkerson Filter At the rear driver side, bolted to the side of the body This filter traps the moisture in

Part No: 3100022 SO4 Valve Rear Driver side of clam shell This electric air valve with a mechanical override operates the gate

Part No: 3100021 O-Ring Kit for SO4 Valve Rear Driver side of clam shell This seal kit is used in the SO4 Valve and contains

Part No: 3100370 8" Composite Air Cylinder Front and rear clam shell gates Starting in May 2006 Midland clam shell trailers

6 Part No: Wilkerson Filter At the rear driver side, bolted to the side of the body This filter traps the moisture in the air lines. Part No: SO4 Valve Rear Driver side of clam shell This electric air valve with a mechanical override operates the gate function of the trailer. Part No: O-Ring Kit for SO4 Valve Rear Driver side of clam shell This seal kit is used in the SO4 Valve and contains all the seals to rebuild the SO4 valve ( ). Part No: " Composite Air Cylinder Front and rear clam shell gates Starting in May 2006 Midland clam shell trailers are using tie rod style cylinder, using both steel and composite tubing. This style of cylinder is easier to rebuild or repair than the welded style. Part No: " Steel Air Cylinder Front and rear clam shell gates Starting in May 2006 Midland clam shell trailers are using a tie rod style cylinder, using both steel and composite tubing. This style of cylinder is easier to rebuild or repair than the welded style.

Part No: 3100355 8" Composite Cylinder Tube Front and rear clam shell gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders.

Part No: 3100372 8" Steel Cylinder Tube Front and rear of clam shell gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders.

7 Part No: " Composite Cylinder Tube Front and rear clam shell gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders. This composite cylinder tube bolts into the tie rod style cylinders ( ) and is interchangeable with the steel tube. Part No: " Steel Cylinder Tube Front and rear of clam shell gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders. This steel tube bolts into the tie rod style cylinder ( ) and is interchangeable with the composite tube. Part No: " Composite Cylinder Ram In the 8" Composite/Steel cylinders at the front and rear gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders using this cylinder ram. This ram is nitride (rust/pit resistant) and fits both steel ( ) and composite ( ) cylinders. Part No: " Steel Air Cylinder Ram (prior to May 2006) In the steel cylinders at the front and rear gates This cylinder ram is used in 7" and 8" steel cylinders made prior to May Anything more recent than that date is now using composite style cylinders and should use the 8" composite ram ( ) for replacement. Part No: " Composite Cylinder Piston In the 8" composite cylinders at the front and rear gates Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders ( ) using this cylinder piston. This aluminum piston fastens to the nitride cylinder ram ( ).

Part No: 3100301 8" Cylinder Piston (prior to May 2006) In the steel cylinders at the front and rear gates This cylinder piston is used in 7" and 8"

Anything more recent than that date is now using composite style cylinders and should use the 8" composite piston (3100363) for replacement.

tie rod cylinders (3100370) using this cylinder gland nut. This gland nut can be used with both composite or steel (3100371) tie rod style cylinders.

than that date is now using composite style cylinders and should use the 8" composite end caps (3100383) for replacement.

tie rod cylinders (3100370) using this end cap. This end cap can be used with both composite and steel (3100371) tie rod cylinders.

8 Part No: " Cylinder Piston (prior to May 2006) In the steel cylinders at the front and rear gates This cylinder piston is used in 7" and 8" steel cylinders made prior to May Anything more recent than that date is now using composite style cylinders and should use the 8" composite piston ( ) for replacement. Part No: " Composite Gland Nut Front and rear clam gate cylinders Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders ( ) using this cylinder gland nut. This gland nut can be used with both composite or steel ( ) tie rod style cylinders. Part No: " Block End (prior to May 2006) Front and rear clam gate cylinders This cylinder block end is used in 7" and 8" steel cylinders made prior to May Anything more recent than that date is now using composite style cylinders and should use the 8" composite end caps ( ) for replacement. Part No: " Composite End Cap Front and rear clam gate cylinders Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders ( ) using this end cap. This end cap can be used with both composite and steel ( ) tie rod cylinders. Part No: " Composite Seal Kit Front and rear clam gate cylinders Starting in May 2006 Midland clam shell trailers are equipped with composite tie rod cylinders ( ) using this seal kit. This seal kit contains all the seals to rebuild both composite and steel ( ) tie rod cylinders.

Part No: 3100297 8" Steel Cylinder Seal Kit (prior to May 2006) Front and rear clam gate cylinders This cylinder seal kit is

Anything more recent than that date is now using composite style cylinders and should use the 8" composite seal kit

This valve provides a direct air exhaust to speed up the air suspension dump function.

the clam shell gate air cylinders which in turn increases gate closing speed.

9 Part No: " Steel Cylinder Seal Kit (prior to May 2006) Front and rear clam gate cylinders This cylinder seal kit is used in 8" cylinders made prior to May Anything more recent than that date is now using composite style cylinders and should use the 8" composite seal kit ( ) for replacement. Part No: Quick Release Valve On the inside chassis, near the center of the trailer. This valve provides a direct air exhaust to speed up the air suspension dump function. Part No: Quick Exhaust Valve (3/4") On the clam shell gate air cylinders This valve provides direct air exhaust from the clam shell gate air cylinders which in turn increases gate closing speed. Part No: Mac Spool Rear drivers side, inside the Mac valve The Mac spool is connected inside the Mac valve ( ). Part No: Mac Valve Seal Kit (with spool) Rear drivers side, inside the Mac valve This spool and seal kit has all the components to rebuild the Big Mac valve ( ).

Part No: 3100147 Air Control Kit Rear suspension This air control kit is the manual dump

Part No: 3100145 Bendix Check Valve At the front of the trailer inside the chassis by the

10 Part No: Air Control Kit Rear suspension This air control kit is the manual dump valve on the trailer. Part No: Bendix Check Valve At the front of the trailer inside the chassis by the gate air reservoir tank This check valve is at the supply port on the gate reservoir air tank ( ). This valve stops air bleed back from the gate air reservoir tank.

HOPPER Part No: 6010558 Inner Drop Landing Leg Left and right front of trailer The landing gear is designed to adjust to any surface allowing

Part No: 5010355 Landing Gear Pin Left and right front of trailer This pin is used to secure the inner landing leg at desired height by being

Part No: 2100082 Hitch Pin In the landing gear legs This pin is a retainer clip for the landing gear pin (5010355) which holds the landing gear

Part No: 3900349 2 Speed Long Leg Landing Gear with Gearbox Left side, front of trailer This landing gear is designed to adjust to any surface

11 HOPPER Part No: Inner Drop Landing Leg Left and right front of trailer The landing gear is designed to adjust to any surface allowing you to move the pin up and down within the punched holes to reach your designated height. Part No: Landing Gear Pin Left and right front of trailer This pin is used to secure the inner landing leg at desired height by being placed in inner ( ) and outer ( ) landing gear holes and secured with the hitch pin ( ). Part No: Hitch Pin In the landing gear legs This pin is a retainer clip for the landing gear pin ( ) which holds the landing gear legs to your desired height. Part No: Speed Long Leg Landing Gear with Gearbox Left side, front of trailer This landing gear is designed to adjust to any surface allowing you to reach your designated height. This is done by cranking the handle ( ). Part No: Speed Long Leg Landing Gear Right side, front of trailer The landing gear is designed to adjust to any surface allowing you to reach your designated height. This is done by cranking the handle ( ) on the gearbox landing leg ( ).

Part No: 3900014 2 Speed Crank Handle On 2 speed landing gear leg This crank handle is used on the 2 speed landing gear and attaches to

Part No: 6017803 Rear EGS Adjusting Plate Drivers side rear gate pin This mounting plate is bolted to the EGS pin (3900311).

Which is usually located at the rear of the trailer unless there is not enough clearance to access the EGS system and is then put in

Part No: 6017804 Front EGS Adjusting Plate Drivers side front gate pin This mounting plate is bolted to the EGS pin (3900311).

12 Part No: Speed Crank Handle On 2 speed landing gear leg This crank handle is used on the 2 speed landing gear and attaches to the gear box landing leg ( ). Part No: Rear EGS Adjusting Plate Drivers side rear gate pin This mounting plate is bolted to the EGS pin ( ). This plate houses the gate setting decal ( ). Which is usually located at the rear of the trailer unless there is not enough clearance to access the EGS system and is then put in the front. Part No: Front EGS Adjusting Plate Drivers side front gate pin This mounting plate is bolted to the EGS pin ( ). This plate houses the gate setting decal ( ). The EGS system can be moved to the front of the trailer due to improper clearance in the rear. Part No: EGS Limit Switch Mounting Plate Drivers side rear gate pin This mounting plate mounts the EGS limit switch ( ) and attaches to the EGS pin assembly ( ). Part No: EGS pipe Drivers side, rear gate This pipe is bolted to the rear gate and activates the EGS limit switch ( ).

Part No: 6015918 EGS Bolt Assembly Drivers side rear gate pin This Bolt allows adjustment of the

Part No: 3900311 EGS Pin Assembly Drivers side rear gate pin The EGS components are attached to

Part No: 1812345 Decal - Electronic Gate Stop Setting Drivers side rear gate pin This decal is

Which is usually located at the rear of the trailer unless there is not enough clearance to access

Part No: 1812346 Decal - Electronic Gate Stop Setting Drivers side front gate pin This decal is

13 Part No: EGS Bolt Assembly Drivers side rear gate pin This Bolt allows adjustment of the EGS Limit Switch ( ) which is mounted to the EGS limit switch mounting plate ( ). Part No: EGS Pin Assembly Drivers side rear gate pin The EGS components are attached to this pin. Part No: Decal - Electronic Gate Stop Setting Drivers side rear gate pin This decal is attached to the EGS adjusting plate ( ). Which is usually located at the rear of the trailer unless there is not enough clearance to access the EGS system and is then located in the front. Part No: Decal - Electronic Gate Stop Setting Drivers side front gate pin This decal is attached to the EGS adjusting plate ( ). The EGS system can be moved to the front of the trailer due to improper clearance in which this EGS decal is used. Part No: Composite Bearing (1"x.75") At the center of the trailer on the hopper This is a greaseless bearing that is installed in the hopper.

Part No: 3912878 Composite Bearing (2.01x1.

14 Part No: Composite Bearing (2.01x1.0) Front and rear of hopper This is a greaseless bearing that is installed in the equalizer arm.

BODY Part No: 4012971 Post Type 2 Speed Mud Flap Bracket Front of landing gear legs This bracket welds to the Mud flap mounting bracket

Part No: 4025077 Left Mud Flap Mounting Bracket Front of hopper This bracket welds to the underside of the body and bolts to the mud flap

Part No: 4025078 Right Mud Flap Mounting Bracket Front of hopper This bracket welds to the underside of the body and bolts to the mud flap

brackets and to the mud flap bracket (4013316). This bracket is used on both post type and 2 speed landing gears.

15 BODY Part No: Post Type 2 Speed Mud Flap Bracket Front of landing gear legs This bracket welds to the Mud flap mounting bracket ( ) and is designed to hold the mud flaps into place. This mud flap bracket is used on both post type and 2 speed landing gears. Part No: Left Mud Flap Mounting Bracket Front of hopper This bracket welds to the underside of the body and bolts to the mud flap mounting plate ( ). This bracket is only used on post type landing gears. Part No: Right Mud Flap Mounting Bracket Front of hopper This bracket welds to the underside of the body and bolts to the mud flap mounting plate ( ). This bracket is only used on post type landing gears. Part No: Post Type 2 Speed Mud Flap Bracket Plate Front of hopper The mud flap mounting plate attaches to the mud flap mounting brackets and to the mud flap bracket ( ). This bracket is used on both post type and 2 speed landing gears. Part No: Landing Gear Bracket Front of hopper This landing gear bracket bolts to the 2 speed landing gear legs and then is welded to the side of the trailer.

Part No: 5013229 Cross Brace Pipe (63") On landing gear legs This landing gear cross brace is bolted to the bottom of the landing gear legs in an "X"

75") On landing gear legs This landing gear brace is bolted to the bottom of the landing gear legs to the bottom of the trailer for support.

Part No: 6010604 Lug Stop Assembly Drivers side front and rear of hopper This lug is used with manual gate adjustment.

16 Part No: Cross Brace Pipe (63") On landing gear legs This landing gear cross brace is bolted to the bottom of the landing gear legs in an "X" formation supporting the two legs. This brace is only used on 2 speed landing gears. Part No: Landing Gear Brace (23.75") On landing gear legs This landing gear brace is bolted to the bottom of the landing gear legs to the bottom of the trailer for support. This landing gear brace is used only on 2 speed landing gears. Part No: Lug Stop Assembly Drivers side front and rear of hopper This lug is used with manual gate adjustment. Part No: Lug Stop Pin Drivers side front and rear of hopper This pin is what secures the lug stop ( ) to the hopper. Part No: Pin Weldment Mid drivers side, by the hopper This pin is to secure the gate service position. Trailer must be drained of air and power disconnected before using service position

Part No: 3900169 Linch Pin (1/4") Mid drivers side, by the hopper

Part No: 6020020 Crank Mounting Assembly Front drivers side This

Part No: 3900318 Gate Hinge Pin Assy. (5.

clam gates. Part No: 3900290 Equalizer Pin (2.

17 Part No: Linch Pin (1/4") Mid drivers side, by the hopper This pin is what secures the Pin Weldment ( ) to the gate. Part No: Crank Mounting Assembly Front drivers side This crank is mounted on the side of the trailer and holds the crank portion of the tarp assembly. This mounting crank is only used with flip tarps. Part No: Gate Hinge Pin Assy. (5.19") At all four corners of the gate This is the hinge pin for the clam gates. Part No: Equalizer Pin (2.06") At all four corners of the gate Part No: Push Block Rear end of trailer This push block bolts to the same bolt configuration as the standard under-run bumper.

Part No: 6011225 Bolt-on Step Bumper Rear end of trailer.

This option is only used for a trailer without a push block (6017649).

bumper bolts to the underside of the push block (6020290).

18 Part No: Bolt-on Step Bumper Rear end of trailer. This bolt-on step bumper is bolted onto the rear of the chassis. This option is only used for a trailer without a push block ( ). Part No: Under-run Bumper At the rear of the trailer under the push block This under-run bumper bolts to the underside of the push block ( ). Part No: Front Aluminum Fender Left and right front side of trailer Part No: Aluminum Front Fender Left and right front side of trailer Part No: Tandem Axle Rear Aluminum Fender Left and right rear side of trailer

Part No: 5012025 Mud Flap Strip Backing On all trailer

the trailer Part No: 3900020 Black Mud Flap (24"x30") At

19 Part No: Mud Flap Strip Backing On all trailer mounted mud flaps This bracket is to secure all mud flaps to the trailer. Part No: Midland Mud Flap (24"x30") At the rear of the trailer Part No: Black Mud Flap (24"x30") At the rear or middle of the trailer Part No: Midland Mud Flap (24"x14") At the front of the trailer

SK2100. This valve operates the gates and is equipped with a manual over ride. This valve is normally closed.

SK2100. This valve operates the gates and is equipped with a manual over ride. This valve is normally closed. SK2100 Air Parts No: 3100097 Air Tank (Medium) Over rear suspension Part No: 3100096 Air Tank (Small) Over rear suspension Part No: 3100231 5 Port 4 Way Gate Valve Rear drivers side This valve operates