HOSE AS 2776402 - Caterpillar

Illustration 25 g02473416
Install the 207-9737 Bracket (51) on the top of the coupler. Use two 8T-4191 Bolts (35) and two 7X-7729 Washers (30). See Illustration 25.
Install the two 150-4034 Tees (48) on bracket (51) by using one 6V-9168 Nut (25) to secure each tee.Tighten nuts to a torque of 55 5 N m (41.0 4.0 lb ft).
Attach the 90° couplings of the two 219-4335 Hose As (55) to the two 150-4034 Tees (48) .
Install the straight couplings of the four 207-9756 Hose Assemblies (52) to the two 150-4034 Tee Assemblies (48) .
Illustration 26 g02473457
Illustration 27 g02386733
Section views for Illustration 26 (V) 17° 5° Angle (W) 90° 5° Angle
Install one 148-8325 Connector Gp (43) to each port on the two 192-2640 Coupler Cylinder Groups (1). Connect the 90 degree coupling of the 207-9756 Hose Assemblies (52) to the four connectors (43). See Illustration 26.Note: Align the hose assemblies at the angles that are specified in Illustration 27.
Illustration 28 g02473497
Use a 7G-2950 Clip (26), a 7G-2951 Clip (27), one 7X-7729 Washer (30), and one 8T-4136 Bolt (33) in order to attach the two 219-4335 Hose Assemblies (55) to the coupler. See Illustration 28.
Install the 212-6690 Guard (54). Use two 8T-4189 Bolts (34) and two 8T-4224 Hard Washers (37). Install the 124-2456 Film (42) on the front of guard (54). See Illustration 28.
Locate the unused 4-pin plug "PA-C11" that is on the 328-2350 Platform Harness As (UPPER) on the right side of the engine compartment.
Check the connector plug in order to ensure that the wiring is consistent with Table 12.
Table 12
4-Pin Plug    
Pin     Color     Wire Number    
1     WH     779    
2     BU     K927    
3     BU     K927    
4     PU     780    
Connect the 4-pin plug to the connector for the solenoid for the 233-7128 Solenoid Valve and Mounting Gp (56). Secure the connector with a 3S-2093 Cable Strap (21) .Installing the Switch
Illustration 29 g01041816
On the left-hand control panel, remove the plug from the empty position that is indicated in Illustration 29.
Illustration 30 g02386726
Install the 212-6521 Rocker Switch (53) by inserting the rocker switch into the connector that is provided behind the control panel. See Illustration 30.Operation of Work Tool Coupler Control
Illustration 31 g01041822
To disengage the coupler pins, pull red button (A) downward and press the TOP of rocker switch (B). When the rocker switch is in the UNLOCKED position, the coupler pins will be disengaged. See Illustration 21.To engage the coupler pins, press the BOTTOM of rocker switch (B). The switch should be in the LOCKED position when you are not disengaging the quick coupler pins.Note: If the coupler pins will not engage at low idle engine speed, repeat the procedure with the machine in high idle.