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 17 of 863
TM 9-2320-260-34-2
12-6. POWER STEERING TEST AND ADJUSTMENT (Contd)
e. Poppet Adjustment
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Start engine (TM 9-2320-260-10) and warm to operating temperature. Let engine idle until end
of test.
CAUTION
Do not hold steering wheel in full turn position for more than
10 seconds. Pump damage may result.
NOTE
Assistant will help with steps 2 through 12.
Rotate steering wheel (1) to full turn right position.
Loosen jamnut (5).
Turn poppet adjusting screw (4) counterclockwise until gage shows maximum pressure.
Turn poppet adjusting screw (4) clockwise until gage shows a 200-400 psi (1379-2758 kPa) drop
in pressure.
Tighten jamnut (5) 10-15 lb-ft (14-20 N•m).
Rotate steering wheel (1) to full turn left position.
Loosen jamnut (6).
Turn poppet adjusting screw (7) counterclockwise until gage shows maximum pressure.
Turn poppet adjusting screw (7) clockwise until gage shows a 200-400 psi (1379-2758 kPa) drop
in pressure.
Tighten jamnut (6) 20-25 lb-ft (27-34 N•m).
Shut down engine (TM 9-2320-260-10).
f. Sector Shaft Adjustment
1.
2.
3.
4.
5.
6.
7.
8.
Remove drag link (TM 9-2320-260-20).
NOTE
Assistant will help with step 2.
Rotate steering wheel (1) full travel in both directions and note halfway (midway) point. Position
to halfway
point.
Loosen jamnut (3).
Tighten adjusting screw (2) 15 lb-in. (2 N•m).
Turn adjusting screw (2) counterclockwise one turn.
Tighten jamnut (3) 20-25 lb-ft (27-34 N•m).
Rotate steering wheel (1) in both directions. If pulsations are felt, repeat steps 1 through 7.
If pulsations continue, refer to general troubleshooting instructions (para. 2-6).
Install drag link (TM 9-2320-260-20).
12-12
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