TM 5-3825-226-24
STEERING CONTROL VALVE
(1 U327)
Pressure setting of relief valve with engine at high
idle ......... 2000 ± 25 psi (140.6 ± 1.8 kg/cm2) (13 800 ± 172 kPa)
Pressure to each steering cylinder with valve in NEUTRAL
position ................. 40 ± 10 psi (2.8 ±0.7 kg/cm2) (276 ± 69 kPa)
Permissible difference in pressures (between
steering cylinders) with valve in
NEUTRAL position .......................... 10 psi (0.7 kg/cm2) (69 kPa)
(1) Torque for plug (orifice) .... 120 ± 24 lb. in. (13.6 ± 2.7 N.m)
(2) 2J6088 Spring (outer) for flow control valve:
Length under test force .......................... 1.53 in. (38.9 mm)
Test force ................................ 22.1 ± 1.1 lb. (98.3 ± 4.9 N)
Free length after test .............................. 2.34 in. (59.4 mm)
Outside diameter ................................ .. 812 in. (20.62 mm)
(3) 4J7490 Spring (inner) for flow control valve:
Length under test force .......................... 1.63 in. (41.4 mm)
Test force ................................ .. 13.3 ± .7 lb. (59.2 ± 3.1 N)
Free length after test .............................. 2.00 in. (50.8 mm)
Outside diameter ................................ ...... 60 in. (15.2 mm)
(4) 4F71.15 Spring for pilot valve:
Length under test force .......................... 1.43 in. (36.3 mm)
Test force ............................ 67.6 ± 3.4 lb. (300.7 ± 15.1 N)
Free length after test .............................. 1.74 in. (44.2 mm)
Outside diameter ................................ ...... 49 in. (12.4 mm)
(5) 3H2549 Shims:
Thickness of one shim ............................. 010 in. (0.25 mm)
One shim changes
pressure ................................ . 40 psi (2.8 kg/cm2) (276 kPa)
(6) 7F9802 Spring (inner) for valve spool:
Length under test force ........................... 1.88 in. (47.8 mm)
Test force ............................... 23.9 ± 1.9 lb. (106.3 ± 8.5 N)
Free length after test............................... 3.31 in. (84.1 mm)
Outside diameter ................................ .... 1.25 in. (31.8 mm)
(7) 7H832 Spring (outer) for valve spool:
Length under test force ........................... 1.53 in. (38.9 mm)
Test force ................................ ... 40 ± 3 lb. (177.9 ± 13.3 N)
Free length after test .............................. 2.20 in. (55.9 mm)
Outside diameter ................................ ... 1.67 in. (42.4 mm)
(8) Thickness of 5J4776 Shim ....................... 005 in. (0.13 mm)
Thickness of 4J8224 Shim ....................... 010 in. (0.25 mm)
1-53
