SUPPORT AS 1534001 - Caterpillar

Illustration 5 g00479784
Operation of travel (1) Left travel motor (8) Right travel motor (57) Forward direction (58) Left travel pedal (59) Idler (60) Right travel pedal (61) Cab (62) Reverse directionThe direction of travel is relative to the position of the lower structure. For normal travel, idler (59) is positioned in front of cab (61) and travel motors (1) and (8) to the rear of the cab. With the machine in the normal position of travel, move the travel pedals (58) and (60) forward. The machine will travel in forward direction (57). This movement is called forward travel. When travel pedals (58) and (60) are moved toward the operator, the machine travels in reverse direction (62). This direction is called reverse travel.When cab (61) is turned to the opposite direction, travel motors (1) and (8) will be positioned in front of the cab. The direction of travel and the operation of travel pedals (58) and (60) are reverse when the machine is in the normal travel direction.A pivot turn is made when the travelling direction of the machine is changed. When one of the travel pedals (58) or (60) is moved forward, the respective track travels forward. The machine turns because the stationary track acts as the pivot point. This is called a pivot turn.This machine will spot turn when the travelling direction of the machine is changed in a narrow place. To complete a spot turn operation, move one travel pedal to the rear and the other travel pedal forward at the same time. One track will travel to the rear and the other track will travel forward. The machine will spot turn around the center axis of the machine.Forward Travel Operation
Illustration 6 g00479646
Main control valve compartment (38) Right travel control valve (40) Left travel control valveWhen the travel pedals are operated, pilot oil from pilot control valve (43) shifts the stem in travel control valves (40) and (38). Travel control valves (40) and (38) allow oil flow from rear pump (47) and front pump (44) to flow to swivel (33). The swivel transfers oil from the rotating upper structure to the lines in the lower structure. The oil flows to left travel motor (1) and right travel motor (8) .Note: The right and left travel controls function in the same manner. The explanation for the left travel control will be used to explain both the right and left travel controls.Pilot oil from control valve (43) flows through line (28) and into left travel control valve (40). The pilot oil shifts the stem of left travel control valve (40). Rear pump oil in passage (39) flows through passage (41) to passage (36). The pilot oil in passage (36) flows through line (35), swivel (33), line (30), and counterbalance valve (24). Pilot oil enters motor rotary group (7) through passage (6) from the counterbalance valve.Part of the rear pump oil flows through the following components: passage (20), brake pilot valve (19) and parking brake assembly (5). Parking brake assembly (5)