TANDEM PUMP REPLACEMENT 2.10 Upon reassembly, inspect the outside area of the tandem pump housing for damage that may have occurred in tran- sit or handling. 1 Attach a lifting device to the tandem pump. 2 Install the lower charge pressure inlet fitting to the tandem pump and attach the brake valve hose. (fig. C2069) Follow the torque chart on page 2 - 53. 3 Install the tandem pump to the loader. 2 WARNING To prevent personal injury, do not attempt to lift heavy objects without assistance. C2069 Charge pressure inlet fitting Line up pump spline to u-joint yoke 4 Line up the u-joint to the tandem pump input splined shaft as you guide the pump into it’s mounting location. ( fig.
C2070) 5 Install the 2 rear mounting bolts. 6 Line up the front mounting brace holes and install the bolt. (fig. C2068) 7 Torque the 2 rear mounting bolts to 60 ft lbs. (82 Nm) Torque the front pump bracket mounting bolt to 50ft lbs (68 Nm) Torque the front lower mounting bracket bolt at 20 to 25 ft lbs. (32 Nm) Remove the lifting device. C2070 8 Connecting the 4 high pressure drive hoses and fit- tings to the tandem pump can only be accomplished in a certain sequence. (fig. C2071) Follow the Torque Chart in Section 2.13, page 2 - 53 when tightening fittings and hoses. If you have removed the hoses completely use the following pattern to reconnect: A Hose no.
1 connects to the bottom port of the left hand drive motor. B Hose no. 2 connects to the top port of the left hand drive motor. C Hose no. 3 connects to the top port of the right hand drive motor. D. Hose no. 4 connects to the bottom port of the right hand drive motor. Front mounting brace Bolt Lower mounting bolt C2068 High pressure hose layout 9 Connect the charge inlet hose from the oil filter to the tandem pump. Torque the fittings and hoses according to the Torque Chart in Section 2.13 page 2 - 53. 4 3 IMPORTANT 1 2 When making repairs to the hydraulic system, keep the work area and parts clean. Use caps and plugs on all open line and ports. C2071 2-18