CHAPTER 13
CARRIER STEERING REPAIR INSTRUCTIONS
Section I. CARRIER STEERING HYDRAULIC PUMP ASSEMBLY
383. Carrier Steering Hydraulic Pump Assembly
382. General
The carrier steering hydraulic pump assembly is
Removal and Disassembly
mounted on the front end of the carrier engine cylinder
a. Removal. Remove the carrier steering hydraulic
block, just behind the fan assembly. The pump is belt
pump assembly (TM 5-3810-207-20).
driven from the carrier water pump and fan pulley. The
b. Disassembly. Disassemble the carrier steering
output of the hydraulic pump is delivered to a pressure
hydraulic pump assembly in numerical sequence as
control valve which in turn supplies the hydraulic
cylinder with the necessary power for steer- ing. The
pump has a pumping element with a specially designed
384. Carrier Steering Hydraulic Pump Assembly
arrangement in which the inner and outer components
Cleaning, Inspection, and Repair
are mutually driven. The carrier of the pumping element
a. Cleaning. Clean all parts with an approved
is keyed to the shaft and revolves inside of the cam
cleaning solvent and dry thoroughly.
insert, which in turn rotates in a bore offset from the
b. Inspection and Repair. Inspect all parts for
center line of the shaft. When the pumping element is
excessive wear and damage. Replace or repair all
revolved, the six rollers, supported by the carrier and
defective parts.
retained in position by the cam insert, create a rolling
and sliding contact against each other which causes the
385. Carrier Steering Hydraulic Pump Assembly
spaces between parts to open and close. This pumping
Reassembly and Installation
action is smooth and uniform and occurs through a large
a. Reassembly. Reassemble the carrier steering
number of degrees of rotation. This assures quiet
hydraulic pump assembly in the reverse of the
operation and long life for the integral parts because of
the absence of shock loads.
b. Installation. Install the carrier steering hydraulic
pump assembly (TM 5-3810-207-20).
Section II. CARRIER STEERING HYDRAULIC CONTROL VALVE ASSEMBLY
turned, the actuator in the steering gear assembly
386. General
moves the actuating lever of the steering control valve
The carrier steering hydraulic control valve
so hydraulic oil pressure from the hydraulic steering
assembly is mounted on the rear and underside of the
pump is directed to the steering cylinder giving the
actuating housing and bushing assembly of the carrier
desired amount and direction of wheel turn.
steering gear assembly. The valve is the control center
of the hydraulic steering gear. When the steering wheel
is
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