YOKE 3L8854 - Caterpillar

Improper attachment of attachments could result in injury or death.Do not operate this machine until you have positive indication that the coupler pins are fully engaged. Check for engagement by:1. Push the tilt control to tilt the attachment down.2. Put down pressure on the attachment.3. Back the machine up and make sure there is not movement between the attachment and the coupler.
Front Attachment Coupler for Tools That Do Not Require Hydraulics
Push the attachment coupler lever forward in order to disengage the coupler pins.
Tilt the coupler assembly forward.Make sure that the coupler assembly is below the level of the hooks on the attachment that will be attached.
Slowly, drive the machine forward. Align the attachment hooks with the coupler assembly.
Pull back on the lift lever in order to slightly raise the coupler. Raise the coupler until the coupler assembly contacts the attachment hooks and the attachment is lifted up slightly.Make sure that the attachment is level from one side to the other side.
Tilt back the coupler assembly until the alignment bar of the attachment contacts the coupler.
Pull back on the coupler lever in order to engage the coupler pins into the attachment retainer holes.Note: Ensure that the tool is firmly attached and continue with steps 7 through 9.
Push the tilt lever in order to tilt the attachment downward.
Push the lift lever forward in order to put down pressure on the attachment.
Back up the machine and make sure that there is no movement between the attachment and the coupler.Steps 7 through 9 indicate that the coupler pins have fully engaged into the attachment retainer holes.Attachments That Require Hydraulics
Follow the procedure that is described in "Front Attachment Coupler for Tools That Do Not Require Hydraulics".
Illustration 1 g00483725
Auxiliary quick connectors (1) with diverter valve (2) in the auxiliary position.Before you connect the quick disconnect plug or you disconnect the quick disconnect plug, follow the steps below.
Stop the engine.
Move all of the hydraulic attachment control levers in order to relieve the pressure in the hydraulic lines.
Return all of the levers to the HOLD position.Connecting Lines and Disconnecting Lines
Disconnect the hydraulic lines of the tool that will be used. Wipe off all foreign material.
Remove the plugs and connect the lines.
Install plugs on any unused connectors.