3-T's RV Products, Inc



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3-T’s RV Products, Inc.

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INSTALLATION INSTRUCTIONS FOR T-3F53 ANTI-ROCK FOR THE FORD F53, 17,000 GVWR CLASS A CHASSIS

PARTS LIST: 2 746 Air cylinders

1 Top mounting bracket

1 Driver side bottom bracket

1 Passenger side bottom bracket

1 Airline kit with two air fill valve attached

2 1/2" x 1-1/2" Grade 5 bolts

2 3/8" x 1-1/2" Grade 5 bolts

4 1/2” x 3” Grade 5 bolts

6 1/2” Flange lock nut

2 3/8” Flange lock nut

8 7/16 Grade 8 Flat washers

2 1" Spacers

2 3/8" Spacer

2 5/8” Spacer

READ ALL INSTRUCTIONS BEFORE BEGINNING THIS INSTALLATION. WELDING THE TOP BRACKET TO THE FRAME VOIDS ALL WARRANTIES. THE ENGINE EXHAUST PIPE MUST COME OUT IN FRONT OF THE REAR WHEELS FOR THIS INSTALLATION.

1) Shut off propane and disconnects battery(s). Lift the vehicle at the axle using stands or hoist. Divide all parts into two groups, one for each side.

2) Locate the two holes; one is 1/2" the other 3/8", just behind the axle in the middle of the frame rail. Position the Top Mounting bracket between the frame rails so that the cylinder mounting holes are toward the lower edge of the bracket and facing the rear of the coach (See Figure 1).

3) Starting on the driver's side, place one 1/2" x 1-1/2" bolt through the Top Mounting Bracket and the large hole in the frame. Next place the 3/8" x 1-1/2" bolt through the Top Mounting Bracket and the small hole in the frame. Go to the passenger's side and place one Top Bracket Spacer between the bracket and the frame. Place bolts as stated through the holes. If the bracket is still loose between the frames, go back to the driver's side and install the second Top Bracket Spacer. Reinstall bolts and install nuts. Torque the 1/2" bolts to 75 ft. lbs. and the 3/8" bolts to 35 ft. lbs.

4) Hold the Bottom Bracket with the cylinder-mounting hole to the rear and toward the inside of the chassis (See Figure 2). Remove the rear U-bolt nuts and install the bottom bracket, torque to factory specs. Repeat on opposite side.

5) Bolt the Air Cylinder to the top and bottom brackets with the air fill port on the cylinder toward the inside of the frame rails (See Figure 3). NOTE: WITH THE AXLE AT RIDE HEIGHT MAKE SURE SHOCK BUSHING HAS NO SIDE LOAD. USE SPACERS IF NEEDED TO CORRECT. IF SPACERS ARE NOT NEEDED USE ON THE HEAD SIDE OF BOLTS.

6) Remove plastic nut and O-ring from the air cylinder as shown in Figure 4. Position the plastic nut and O-ring on the airline as shown. Tighten by hand. Route the remaining airline to the area chosen for the air fill valves. Be careful to keep the airline away from sharp edges, exhaust pipes, etc. Drill a 5/16" hole so that the air fill valve can be mounted through the body structure. Unscrew the nut and washer from the airline fill valve. Place the air fill valve through the hole, replace washer and nut. See Figure 4.

7) Inflate the units to 100 psi and check fittings for air leaks with a soapy water solution. If units fail to inflate with the air, the airline has probably become crimped where attached to the cylinder. Disassemble plastic nut and O-ring, cut off crimped section squarely and carefully reassemble. When you are satisfied there are no leaks, lower air pressure to between 40 and 60 psi. Follow the procedure in the enclosed Owner's Leaflet for setting the air pressure to obtain the best ride and handling characteristics. Attach the air pressure decals to the coach body near the air fill valves.

Reg. U.S. Patent No. 4,168,844

Recommended installation time for the T-3F53: 2.5 Hours

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FIGURE 4

FIGURE 3

FIGURE 2

FIGURE 1

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