Operation - Section 30 OM3070 Page 30-14 Operating Instructions DISABLED TRUCK OPERATION 3. Remove the plug and install the necessary QD return fittings listed in Table 2 into the QD Return port on the bleeddown manifold. GENERAL Refer to the shop manual for repair and troubleshoot- ing procedures for the hoist system components and steering system components. Refer to the shop man- ual for repair and troubleshooting procedures for the hydraulic brake system components. : STEERING AND BRAKE SYSTEM Quick disconnect fittings (1 and 2, Figure 30-5) can be installed to allow operation of the steering and brake circuits for temporary truck operation if the steering/brake pump is not operational.
Once these fittings are installed, two hoses (supply and return) must be connected to a hydraulic source (such as an operational truck or an auxiliary power unit) to use this feature. 4. The supply jumper hose must be equipped with quick disconnect fitting PB4682. This will connect to quick disconnect fitting (1). Components Required The following parts will be needed to install quick dis- connect fittings that will allow the use of alternate hydraulic power source. 5. The return jumper hose must be equipped with fitting PB4684 to connect with return quick disconnect fitting (2). 1. Stop the truck engine and wait two minutes to allow the hydraulic system pressure to bleeddown. 2.
Remove the plug and install the necessary QD supply fittings listed in Table 1 into the QD Supply port on the bleeddown manifold. Table 2: QD Return Fittings Qty Part Number Description 1 TA2968 Dust Cover 1 PB4685 Disconnect Fitting 1 WA3568 Swivel Adapter 1 WB0599 Fitting Table 1: QD Supply Fittings Qty Part Number Description 1 PB4686 Dust Cover 1 PB4683 Disconnect Fitting 1 VN3308 Swivel Adapter 1 WB0543 Fitting