HOUSING-SPINDLE 2669716 - Caterpillar

Schematic
Illustration 1 g00555500
(1) AUTO lube tank
(2) Air tank check valves
(3) Drain valves
(4) Primary air tank
(5) Starter relay valve
(6) Attachment shutters for the left cylinder and for the right cylinder
(7) Attachment inversion valve
(8) Solenoid valve for attachment shutters
(9) Air relief valve for primary air tank
(10) Starter solenoid valve
(11) Air starting motor
(12) Brake air relay valve
(13) Air compressor with air compressor governor
(14) Air dryer with an air relief valve
(15) External air supply
(16) Parking and secondary brake valve
(17) Torque converter and front brake cooling diverter valve
(18) Brake master cylinder (front)
(19) Brake master cylinders (rear)
(20) Gauge for brake air pressure
(21) Machine autolube solenoid
(22) Air system pressure protection valve
(23) Service brake air control valve
(24) Window wiper motor
(25) Window wiper air control valve
(26) Double check valves
(27) Retarder air control valve
(28) Secondary brake air control valve
(29) Parking brake air control valve
(30) Secondary air tank
(31) Air horn
(32) Automatic Retarder Control (ARC) valve
(33) Horn valve
(34) Cab wall
(A) This is the brake cylinder overstroke limit switch (overstroke switch). The overstroke switch is normally closed. The overstroke switch opens when the pistons in the master cylinder travel too far. A brake overstroke condition can result from low brake fluid level, air in the brake hydraulic circuit, leakage in the brake hydraulic lines, and master cylinder piston seal leaks. An indicator will come on in the cab and the alarm will sound. Do not operate the machine until the cause for the overstroke has been corrected.
(B) This is the brake air pressure switch. The brake air pressure switch monitors brake air pressure. The operator will be alerted to a condition of low air pressure.
(C) This is the pressure switch for the Traction Control System (TCS). This pressure switch is normally closed. This pressure switch is opened by air pressure when the service brakes are applied. When this pressure switch is open, this switch turns off the TCS.
(D) This is the service brake and retarder pressure switch. This pressure switch is normally closed. This pressure switch is opened by air pressure when the service brakes are applied. When this pressure switch is open, the pressure switch signals the Electronic Programmable Transmission Control (EPTC II) in order to allow the transmission to perform rapid shifts. The EPTC II also indicates that higher engine rpm is needed for upshifts or for downshifts of the transmission when this pressure switch is open.
(E) This is the stop lights pressure switch. This pressure switch is normally open. This pressure switch is closed by air pressure when the service brakes are applied. When this pressure switch is closed, this pressure switch activates the stop lights.
(F) This is the retarder pressure switch. This switch is open when air pressure is in the retarder air circuit. This switch operates the indicator in the cab.
(G) Remove this line when the Automatic Retarder Control (ARC) is added as an attachment to the machine.
(H) This is the secondary brake and parking brake pressure switch. This pressure switch is normally open. The pressure switch is closed by air pressure when the parking brakes or