A brake adjuster with a housing configured to be coupled to a brake actuator push rod, and a control unit rotatably coupled to the housing. The control unit is configured to be coupled to a reference point of a vehicle and to cause adjustment of the brake as the brake actuator push rod retracts. One of the housing and the control unit has a first indicator and a second indicator, and the other of the housing and the control unit has a third indicator. The third indicator is adjacent the first indicator when the brake actuator push rod is retracted in a brake disengaged position, and the third indicator is adjacent the second indicator when the brake actuator push rod is extended to a brake over-stroke position. The indicators may be any combination of notches, protrusions, marks, or pointers.

A brake adjuster with a housing configured to be coupled to a brake actuator push rod, and a control unit rotatably coupled to the housing. The control unit is configured to be coupled to a reference point of a vehicle and to cause adjustment of the brake as the brake actuator push rod retracts. One of the housing and the control unit has a first indicator and a second indicator, and the other of the housing and the control unit has a third indicator. The third indicator is adjacent the first indicator when the brake actuator push rod is retracted in a brake disengaged position, and the third indicator is adjacent the second indicator when the brake actuator push rod is extended to a brake over-stroke position. The indicators may be any combination of notches, protrusions, marks, or pointers.

A drum brake apparatus includes: a housing; a main braking part installed on one side of the housing, and driven by hydraulic pressure so as to press a shoe during main braking; and a parking braking part installed on another side of the housing, and driven by an electromotive force of an actuator so as to press the shoe during parking braking. The housing includes: a housing part; a piston housing part formed on the housing part, having a hollow portion formed therein, and having the main braking part installed therein; and a rod housing part formed on the housing part, having a hollow portion formed therein, and having the parking braking part installed therein. The rod housing part is disposed at a location farther from a rotation center of the shoe than the piston housing part.

A drum brake apparatus includes: a housing; a main braking part installed on one side of the housing, and driven by hydraulic pressure so as to press a shoe during main braking; and a parking braking part installed on another side of the housing, and driven by an electromotive force of an actuator so as to press the shoe during parking braking. The housing includes: a housing part; a piston housing part formed on the housing part, having a hollow portion formed therein, and having the main braking part installed therein; and a rod housing part formed on the housing part, having a hollow portion formed therein, and having the parking braking part installed therein. The rod housing part is disposed at a location farther from a rotation center of the shoe than the piston housing part.

A brake adjuster with a housing configured to be coupled to a brake actuator push rod, and a control unit rotatably coupled to the housing. The control unit is configured to be coupled to a reference point of a vehicle and to cause adjustment of the brake as the brake actuator push rod retracts. One of the housing and the control unit has a first indicator and a second indicator, and the other of the housing and the control unit has a third indicator. The third indicator is adjacent the first indicator when the brake actuator push rod is retracted in a brake disengaged position, and the third indicator is adjacent the second indicator when the brake actuator push rod is extended to a brake over-stroke position. The indicators may be any combination of notches, protrusions, marks, or pointers.

A brake adjuster with a housing configured to be coupled to a brake actuator push rod, and a control unit rotatably coupled to the housing. The control unit is configured to be coupled to a reference point of a vehicle and to cause adjustment of the brake as the brake actuator push rod retracts. One of the housing and the control unit has a first indicator and a second indicator, and the other of the housing and the control unit has a third indicator. The third indicator is adjacent the first indicator when the brake actuator push rod is retracted in a brake disengaged position, and the third indicator is adjacent the second indicator when the brake actuator push rod is extended to a brake over-stroke position. The indicators may be any combination of notches, protrusions, marks, or pointers.

A drum brake apparatus includes: a housing; a main braking part installed on one side of the housing, and driven by hydraulic pressure so as to press a shoe during main braking; and a parking braking part installed on another side of the housing, and driven by an electromotive force of an actuator so as to press the shoe during parking braking. The housing includes: a housing part; a piston housing part formed on the housing part, having a hollow portion formed therein, and having the main braking part installed therein; and a rod housing part formed on the housing part, having a hollow portion formed therein, and having the parking braking part installed therein. The rod housing part is disposed at a location farther from a rotation center of the shoe than the piston housing part.

A drum brake apparatus includes: a housing; a main braking part installed on one side of the housing, and driven by hydraulic pressure so as to press a shoe during main braking; and a parking braking part installed on another side of the housing, and driven by an electromotive force of an actuator so as to press the shoe during parking braking. The housing includes: a housing part; a piston housing part formed on the housing part, having a hollow portion formed therein, and having the main braking part installed therein; and a rod housing part formed on the housing part, having a hollow portion formed therein, and having the parking braking part installed therein. The rod housing part is disposed at a location farther from a rotation center of the shoe than the piston housing part.

A drive system for an agricultural baler that includes a power take off (PTO) shaft configured for being operably connected in between an agricultural vehicle and the agricultural baler and for supplying motive power to the agricultural baler, a gearbox configured for being mounted on the agricultural baler and connected to the PTO shaft for receiving motive power from the PTO shaft, a pickup drive shaft operably connected to the gearbox and configured for being operably connected to a reel of a pickup unit of the agricultural baler, at least one sensor associated with the pickup drive shaft and configured for sensing a rotational movement of the pickup drive shaft, and an electrical processing circuit operably connected to the at least one sensor. The electrical processing circuit is configured for disconnecting motive power to the reel.

A clearance sensing vehicle brake slack adjuster includes a housing coupled to a brake actuator and supporting a driving worm wheel engaging the brake cam shaft and a driving worm screw having a threaded portion meshed with the driving worm wheel and transferring a brake actuating force, imparted by the brake actuator to the housing, to the driving worm wheel and cam shaft. A wear adjustment mechanism for the adjuster includes a control worm wheel and a clutch ring disposed about the driving worm screw and a wrap spring engaging surfaces of the control worm wheel and the clutch ring. The control worm wheel is in mesh with a control worm screw. The clutch ring is disposed on a side of the control worm wheel opposite the threaded portion of the driving worm screw and includes teeth engaging corresponding teeth on the driving worm screw.