7. ADJUSTMENT AND REPAIR

2)Reinstallation

Reinstall the hydraulic pump in the reverse order of the removal procedure.

Notes :

•Apply heavy-duty grease to the spline shaft of the hydraulic pump.

Hydraulic pump installation bolt M12

Tightening torque57.9 to 72.3 ft•lbf (78.5 to 98.1 N•m)

•Hydraulic oil to be used :

TypeVG 46 class or its equivalent

Quantity 4.36 Gals. (16.5 L)

•After the installation of the hydraulic pump, make a test run and operate the relief valves to check for oil leak or other abnormality.

7-5-2Removal and Reinstallation of Control Valve

1)Removal

Procedure

(1)Swing the upperstructure so that the drain plug 1 of the hydraulic oil tank and the under cover (CV) 2 are positioned halfway between the right and left crawlers. Then, lower the bucket to the ground and stop the engine.

Procedure

(4)Remove the hydraulic hoses and the pilot hoses from the control valve 5

Notes :

•Remove the hydraulic hoses and the pilot hoses from the control valve in left-to-right order.

•Mark the removed hoses to identify their respective fitting positions.

(5)Remove the nuts 9 from the L-balls 8 connected to the travel (R) section 6, and the travel (L) section 7, to disconnect those sections from the links 10

(6)Remove the pins 15 to disconnect the cable 11 connected to the blade lever the cable 12 connected to the track gauge change lever, the cable 13 connected to the boom swing pedal and the cable 14 connected to the P.T.O. pedal from the spools of the control valve 6

(7)Remove the mounting bolts 16, and then remove the control valve 5 from the valve plate 17