Repair of Hydraulic Oil Tank
General. Remove and replace defective component following sequence indicated in figure 3-27.
Cleaning. Steam clean inside of tank and allow condensed water to drain off. Wash down outside of tank with a
cloth saturated with dry-cleaning solvent or mineral spirits paint thinner.
Inspection and Repair.
(1) Inspect welds for cracks and defects. Repair defective welds.
(2) Inspect tank surfaces for cracks, nicks, rust and corrosion. Remove nicks with a fine file and crocus cloth.
Remove rust or corrosion with crocus cloth.
Inspect painted surfaces for chipping and scraping. Clean and touch up painted surfaces that are chipped,
scraped, rusted, or corroded.
Assembly of Hydraulic Oil Tank Assembly from Subassemblies
Assemble the hydraulic oil tank in reverse order of disassembly (fig. 3-27).
Section VII. REPAIR OF SPADE SUBPLATE AND COMBINATION
CONTROL VALVE ASSEMBLY
The spade subplate and combination control valve assembly (C, fig. 1-17) is mounted to the crew compartment front
wall. The combination control valve is manually operated to include control, check, and adjustable relief for spade
Disassembly of Spade Subplate and Combination Control Valve Assembly
General. Figure 3-28, with its accompanying legend, serves to identify all parts of the spade subplate and
combination control valve assembly. The legend also provides an index to the step-by-step removal of each component
Disassembly Procedure. Disassemble the spade subplate and combination control valve assembly as shown in