Form No. 3387-880 Rev B Backfill Blade Kit RT1160 or RT1200 Trencher Model No. 131-1286 Installation Instructions WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. Safety Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 130-7541 1.
Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 4 5 6 7 Description Qty. – No parts required Pivot cylinder—retracted length 41.3 cm (16.25 inch); rod diameter 38.1 mm (1.
Procedure 8 9 10 Description Use Qty. Lift cylinder extend hose (3/8 x 23 inches) Lift cylinder retract hose (3/8 x 31-1/4 inch) Tilt cylinder extend hose (3/8 x 49-1/4 inch) Tilt cylinder retract hose (3/8 x 62-1/4 inch) Clamp block (2-hose) Bolt (3/8 x 1-3/4 inch) Washer (3/8 inch) Cover plate Cable tie 1 1 1 Install the hydraulic hoses. 1 4 2 2 2 1 No parts required – Bleed the hydraulic system for the backfill blade. No parts required – Install the nose panel and side panels.
. At the front of the machine, clean the bottom of the frame plate and the front axle support as shown in Figure 3. Figure 5 Figure 3 1. Nose panel 3. Frame 2. Flanged-head bolt (10 x 30 mm) 1. Bulkhead fittings 4. Hose fittings 2. Bottom frame plate 5. Front of the machine 3. Front axle support 3. Tilt the nose panel forward and then lift it up off the machine (Figure 5). 5. Clean the bulkhead fittings and the hose fittings as shown in Figure 3. Removing the Nose Panel 1.
2 Installing the Support Frame Parts needed for this procedure: 2 Pivot cylinder—retracted length 41.3 cm (16.25 inch); rod diameter 38.1 mm (1.5 inch) 2 T-fitting (3/8 inch) 2 Cross-connect hose (1/4 x 20 inch) 1 Mounting frame 2 Bolt (1 x 3-1/2 inch) 4 Washer (1 inch) 4 Locknut (1 inch) 4 Bolt (1 x 2-1/2 inch) Preparing Pivot Cylinders Figure 6 Pivot cylinder weight: 14 kg (30 lb) 1. Extend port (pivot cylinder) 4.
Disconnecting the Hydraulic Hoses from the Bulkhead Panels 1. At the front of the machine, carefully identify and uniquely mark the position of the hoses at the left and right bulkhead panels (Figure 7). Note: The 2 hoses that are not attached to either bulkhead panel are for the pivot cylinders. Figure 8 Figure 7 1. Hoses (right bulkhead panel) 4. Drain hose (coolant reservoir) 2. Front axle support 5. Hoses (left bulkhead panel) 1. Bolt (1 x 2-1/2 inch) 5. Locknut (1 inch) 2. Washer (1 inch) 6.
3 Assembling the Pivot Cylinders to the Mounting Frame Parts needed for this procedure: Figure 10 1. Bolt (1 x 3-1/2 inch) 4. Hole (front axle support) 2 Pins (1-1/4 x 7-5/8 inch) 2. Washer (1 inch) 5. Front of the machine 4 Snap rings (1-1/8 inch) 3. Locknut (1 inch) 6. Up 4 Washers (1 x 5/16 inch) 5. Assemble 2 bolts (1 x 2-1/2 inch), 2 washers (1 inch), and 2 locknuts (1 inch) through the vertical holes in the mounting frame and the bottom frame plate (Figure 9 and Figure 11).
Figure 15 Figure 13 1. Cylinder lug (mounting frame) 3. Bushing (bottom plate of the mounting frame) 2. Gap 4. Pivot cylinder (fixed end) 6. Align the mounting fitting at the fixed end of the pivot cylinder between the bushing/washers and the mounting lug (Figure 14). Note: Align the T-fitting toward the centerline of the machine. 3.
4 Connecting the Pivot Cylinder Hoses No Parts Required Figure 17 Procedure 1. Remove the plug from the free end of the left and right pivot-cylinder hoses. 2. Connect the left pivot-cylinder hose to the T-fitting at the left pivot cylinder (Figure 16) and torque the swivel nut of the hose to 21 to 28 N-m (15 to 21 ft-lb). 1. Cross-connect hose (T-fitting—left pivot cylinder) 3. Retract port (left pivot cylinder) 2. Retract port (right pivot cylinder) 4.
5 Installing the Pivot Frame Parts needed for this procedure: 1 Pivot frame 3 Washers (1 x 5/8 inch) 1 Pivot pin (1-1/2 x 15-1/2 inch) 2 Snap ring (1-3/8 inch) 2 Pins (1-1/4 x 7-5/8 inch) 4 Snap rings (1-1/8 inch) Figure 20 Installing the Pivot Frame to the Machine Pivot frame weight: 65 kg (142 lb) 1. Upper plate (mounting frame) 3. Pivot frame 2. Pivot pin (1-1/2 x 15-1/2 inch) 4. Lower plates(mounting frame) 4.
. Insert the pivot pin (1-1/2 x 15-1/2 inch) through the mounting frame, washers, and pivot frame bushings and secure the pin with a snap ring (1-3/8 inch) as shown inFigure 25 and Figure 26. Figure 22 Figure 25 1. Pivot pin 2. Bushing-upper (mounting frame) Figure 23 9. Align the pivot frame between the upper and lower plates of the mounting frame, and align the pivot holes in the pivot and mounting frames (Figure 24).
Assembling the Pivot Cylinders to the Pivot Frame Grease type: lithium-based grease 1. Install 2 snap rings (1-1/8 inch) onto the ends of the 2 pins (1-1/4 x 7-5/8 inch) as shown in Figure 27. Figure 29 5. Repeat steps 3 and 4 for the other pivot frame mounting point and pivot cylinder. Figure 27 1. Snap ring (1-1/4 inch) 2. Pin (1-1/4 x 7-5/8 inch) 2.
6 Installing the Blade Arms Parts needed for this procedure: 1 Lift-arm assembly 2 Pin (1-1/2 x 5-1/4 inch) 4 Snap ring (1-3/8 inch) 1 Lift cylinder—retracted length 51.4 cm (20.25 inch); rod diameter 38.1 mm (1.5 inch) 2 Clevis pin (1-1/4 x 4-7/16 inch) 2 Hairpin Figure 31 1. Fitting (lift-arm assembly) 3. Lift flange (pivot frame) 2. Snap rings (1-3/8 inch) 4. Pins (1-1/2 x 5-1/4 inch) 4. Align the holes in the fittings with the holes in the flanges (Figure 31). 5.
Installing the Lift Cylinder 4. Secure the cylinder to the lug with a clevis pin (1-1/4 x 4-7/16 inch) and a hairpin (Figure 32). Lift cylinder weight 12 kg (25 lb) Note: The retracted length of the lift cylinder is 51.4 cm (20.25 inch) and the rod diameter is 38.1 mm(1.5 inch). 1. Align the holes in the rod fitting of the lift cylinder with the hole in the mounting lug for the lift-arm assembly as shown in A of Figure 32. Note: Ensure that the hydraulic ports of the cylinder are up. Figure 32 1.
7 Installing the Backfill Blade Parts needed for this procedure: 1 Backfill blade 2 Retainer plate 6 Bolt (5/8 x 1-1/2 inch) 12 Washer (5/8 inch) 8 Retained shim 1 Tilt cylinder—retracted length 51.4 cm (20.25 inch); rod diameter 44.5 mm (1.75 inch) 2 Clevis pin (1-1/4 x 4-7/16 inch) 2 Hairpin Installing the Backfill Blade onto the Lift Arms Figure 33 Backfill blade weight: 1302 kg (291 lb) 1.
Figure 34 1. Threaded hole (backfill blade) 3. Washer (5/8 inch) 2. Retainer plate 4. Bolt (5/8 x 1-1/2 inch) Figure 36 1. Threaded plate (backfill blade) 4. Washer (5/8 inch) 2. Retainer shim (use as required) 5. Bolt (5/8 x 1-1/2 inch) 3. Retainer plate 4. Check that the backfill blade has a slip fit moving the backfill blade by hand (Figure 35). Note: Take some of the lifting pressure off the lifting equipment to allow moving the backfill blade. B.
Installing the Tilt Cylinder 8 Tilt cylinder weight: 11.3 kg (25 lb) Note: The retracted length of the tilt cylinder is 51.4 cm (20.25 inch) and the rod diameter is 44.5 mm (1.75 inch). Installing the Hydraulic Hoses 1. Align the hole in the mounting fitting at the fixed end of the lift cylinder—retracted length 51.4 cm (20.25 inch); rod diameter 44.5 mm 1.75 inch) with the hole mounting lug at the lift-arm assembly as shown in A of Figure 38.
Installing the Tilt Cylinder Hoses 1. Remove the caps from the tilt cylinder extend and retract ports of the left-hydraulic panel (Figure 39). 2. Remove the shipping caps from the extend and retract ports of the tilt cylinder. 3. Connect the tilt cylinder extend hose (3/8 x 49-1/4 inch) between the bulkhead fitting for the tilt cylinder extend circuit at the left-hydraulic panel. and the extend port of the tilt cylinder (Figure 42). Figure 40 1.
5. At the tilt cylinder ports, torque the hose fittings to 31 to 39 N-m (23 to 29 ft-lb). 9 6. At the hydraulic panel, torque the swivel nuts for the hoses to 21 to 28 N-m (15 to 21 ft-lb). 7. Apply medium-grade thread-locking compound to the threads of the 2 bolts (3/8 x 1-3/4 inch). Bleeding the Hydraulic System for the Backfill Blade 8. At the weld nut on the left lift arm, secure the hoses with 2 clamp blocks, bolt (3/8 x 1-3/4 inch), washer (3/8 inch), and cover plate (Figure 44).
2. Slowly raise and lower the backfill blade by moving the right joystick rearward and forward (Figure 47 and Figure 48). Note: Move the blade up and down until the blade raises and lowers smoothly Important: Do not press the trigger to float the blade. Figure 47 Figure 45 1. Fill cap (off) 3. Hydraulic fluid level at the midpoint of the sight glass 2. Hydraulic fluid 1. Lower the blade (joystick) 5. Turn the blade left (left-thumb control) 2. Raise the blade (joystick) 6.
6. Slowly tilt the backfill blade down at the left side and then down at the right side by twisting the right joystick clockwise and counterclockwise (Figure 47 and Figure 51). Note: Tilt the blade left side down and right side down until the blade tilts smoothly. Figure 49 2. Pivot—right 1. Pivot—left 5. If the backfill blade pivots to the left, leave the backfill blade turned left and perform the following: Note: If the backfill blade swings right, skip to step 6. A.
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