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

  TM-9-2320-260-34-2 - Page 7 of 863

12-2. DESCRIPTION (Contd)
b. The power steering pump and reservoir are incorporated into a single assembly. The oil reservoir
encloses the pump housing and provides a reserve supply of oil to assure complete filling of hydraulic sys-
tem. Atmospheric pressure in the reservoir is maintained through a breather near filler neck of reservoir.
A filter is installed near intake of pump to prevent dirt and other foreign matter from entering hydraulic
system. Two V-belts transfer power from the engine accessory drive to a double pulley which drives the
power steering pump.
1. Power steering pump pulley
2. Breather
3. Reservoir cap
4. Reservoir return line tube
5. Power steering pump reservoir
6. Power steering pump
7. Reservoir inlet port
12-3. PRELIMINARY MAINTENANCE CHECKLIST
1. Check steering linkage and components for wear before performing hydraulic tests and adjustments.
2. Check tire pressures. Ensure pressures are correct and equal (TM 9-2320-260-10).
3. Check slip joint on steering column. Ensure it is free and lubricated. A tight slip joint can cause
steering problems.
4. Check oil reservoir for proper oil level. (LO 9-2320-260-12).
5. Check oil pump drivebelts for tightness, wear, and slippage (TM 9-2320-260-20).
6. If problems cannot be determined during the preliminary check, you will have to test the hydraulic
system.
12-4. MAINTENANCE PRECAUTIONS
1. Always use a puller to remove steering arms. Never use a torch or hammer.
2. Do not weld any broken steering components. Replace defective or broken parts.
3. Do not cold straighten, hot straighten, or bend any steering system part.
4. Excessive heat will develop if power steering is held in extreme right or left turns longer than a few
seconds. This heat will damage seals and/or pump.
5. Prevent dirt and foreign matter from entering hydraulic steering system. Always clean around filler
caps, hose, and fitting connections before removing.
12-2
TM 9-2320-260-34-2


Back to Top