3-15.4 Hydraulic Pump Replacement, Model 204-050-200-5 (AVUM)-Continued
Remove a Hydraulic Pump as follows:
Place drip pan under wheels assembly.
Remove hydraulic pressure from system by rapidly rotating the release valve knob counterclockwise
Disconnect both hose assemblies from tee fitting (27) installed In pump metering valve and, drain fluid into
Remove tee fitting (27) from reducer/metering valve in pump, and retain for Installation In replacement
Remove hydraulic pump (5), with part number BU0953B, using following steps
Remove four nuts (16) and four washers (17) from the U-bolts (18 & 19).
Remove two U-bolts (18 & 19) and plate spacer (20).
Grasp pump (5) and lift from cradle assembly (10).
If pump was removed as part of a disassembly procedure, retain pump and attaching hardware for
If pump was removed because it is defective, send to AVIM for disposal, replace with hydraulic pump
part number 61780.
Figure 3-5. Hydraulic Pump, Part No BU0953B
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