TM-9-2320-260-34-2
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2
JULY 1994
TM-9-2320-260-34-2 - Page 6 of 863
TM 9-2320-260-34-2
CHAPTER 12
STEERING SYSTEM MAINTENANCE
Section I.
Mechanical and Power Steering System Maintenance (page 12-1)
Section II. Tire Maintenance (page 12-18)
Section I. MECHANICAL AND
POWER STEERING SYSTEM MAINTENANCE
12-1. MECHANICAL AND POWER STEERING SYSTEM MAINTENANCE INDEX
PARA.
PAGE
NO.
TITLE
NO.
12-2.
Description
12-1
12-3.
Preliminary Maintenance Checklist
12-2
12-4.
Maintenance Precautions
12-2
12-5.
Power Steering Gear Replacement
12-3
12-6.
Power Steering Test and Adjustment
12-6
12-7.
Power Steering Assist Cylinder Maintenance
12-16
12-2. DESCRIPTION
This paragraph describes the power steering gear and power steering pump with oil reservoir.
a. The M809 series vehicles utilize a power steering system consisting of a power steering gear which
is a fully integral power unit incorporating a hydraulic control valve, hydraulic power cylinders, and a
mechanical steering mechanism. Now of oil from the engine-driven pump is directed to the power assist
cylinder by the control valve.
1. Power steering gear assembly
2. Poppet valve adjustment
3. Hydraulic pressure inlet
4. Poppet valve adjustment screw
5. Input shaft
6. Hydraulic oil return
7. Assist cylinder port
8. Assist cylinder port
9. Sector shaft
12-1
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