NOZZLE AS-FUEL V 0R3590 - Caterpillar

1 If adjustments are to be made to a valve mounted on the tractor, do not remove the valve. Be sure that housing (2) does not touch cover plate (3). Housing (2) must be 0.25 0.13 mm (.010" .005") above plate (3). If a new steering and brake control valve is to be installed, remove steering control valve (1) from the machine. Thoroughly clean plate (3) under the steering valve. Install new seals in the plate, and install the new steering clutch hydraulic control valve (see page 1 for the part number) where the former control valve was removed. Be sure housing (2) is above the machined mounting surface for the control valve; see the dimensions above. Tighten the four bolts that hold the valve body to a torque of 45 7 N m (32 5 lb-ft). Install elbows (4) after the four bolts have been tightened.2 Adjust the steering clutch control linkage to the specifications shown in the Service Manual. Adjust length (B) of rod (5) to 555.0 mm (21.85"). 3 Install 0-4150 kPa (0-600 psi) pressure gauges at locations (X) to check the steering clutch pressure, and at locations (Y) to check the brake pressure. Operate the machine to warm the transmission oil to the normal temperature for operation. With the steering clutch control lever held in the maximum travel position, the brake pressure must be as shown in the chart above. Be sure the engine R/Min (RPM) is adjusted to the correct specification. 4 Put a mark on steering clutch control lever (6) at the edge of the dash group at location (W). Pull the lever out to the limit of its travel, and put a mark on the lever at the edge of the dash at (V). Put four marks (R), (S), (T) and (U) on the lever at the locations shown.5 With the engine at high idle, pull control lever (6) out until each mark is even with the dash. Make a record of the steering clutch and brake pressures at each mark. The parking brake or foot brake pedal must not be applied during the pressure test. Measure the distance between marks (V) and (W).6 If the measurement between marks (V) and (W) is not 177.8 mm (7.0"), the formula that follows must be used to figure the correct ratio between the actual rod travel and the dimensions on the chart. This ratio will be the pressure chart displacement. Example: If the total rod travel is 190.5 mm (7.5") [dimension (V) to (W)] and the steering clutch pressure is taken at 57.0 mm (2.25") mark (S), find the correct pressure chart displacement as follows: 7 If needed, use this formula to determine the correct pressure chart displacement for each reading at (R), (S), (T) and (U). The pressure reading can be used without any conversion. Use the correct chart, for your machine (pages 7 and 8), and mark the two points for steering clutch pressure