5
C
MANUAL TILT ASSIST
90-857046R1 NOVEMBER 2001 Page 5C-1
MID-SECTION
Section 5C - Manual Tilt Assist
Table of Contents
Special Tools 5C-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Tilt Components 5C-2. . . . . . . . . . . . . . . . .
Manual Trim Flow Diagrams 5C-4. . . . . . . . . . . . . .
Up Circuit 5C-4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Down Circuit 5C-6. . . . . . . . . . . . . . . . . . . . . . . . .
Slow Tilt Down Under High Thrust 5C-8. . . . . .
Under Water Strike (Valves Open) 5C-10. . . . . .
Shock Function (Valve Closed) 5C-12. . . . . . . . .
Shock Function Return 5C-14. . . . . . . . . . . . . . . .
Hydraulic System Troubleshooting 5C-16. . . . . . . . .
Manual Tilt System Removal 5C-18. . . . . . . . . . . . . .
Manual Tilt System Disassembly 5C-20. . . . . . . . . .
Accumulator Removal 5C-20. . . . . . . . . . . . . . . . .
Shock Rod Removal 5C-21. . . . . . . . . . . . . . . . . .
Shock Rod Disassembly 5C-21. . . . . . . . . . . . . . . . .
Valve Block Removal 5C-24. . . . . . . . . . . . . . . . .
Memory Piston Removal 5C-25. . . . . . . . . . . . . .
Valve Block Disassembly 5C-26. . . . . . . . . . . . . . . . .
Reassembly - O-Ring and Seal Placement 5C-27.
Actual O-Ring Sizes 5C-28. . . . . . . . . . . . . . . . . . . . .
O-ring Description and Sizes 5C-29. . . . . . . . . . . . . .
Manual Tilt System Cleaning and Inspection 5C-29
Manual Tilt System Reassembly 5C-29. . . . . . . . . .
Valve Block Installation 5C-32. . . . . . . . . . . . . . . .
Shock Rod Reassembly 5C-33. . . . . . . . . . . . . . .
Shock Rod Installation and Fluid
Filling Procedure Option One 5C-35. . . . . . . . . .
Fluid Filling Procedure Option Two 5C-37. . . . .
Manual Tilt System Installation 5C-40. . . . . . . . . . . .
Manual Release Valve Adjustment 5C-43. . . . . .
Special Tools
1. Spanner Wrench P/N 91-74951
2. Lock-Ring Pliers P/N SRP2 (Snap-On)
3. Heat Lamp P/N 91-63209
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