HEAD 2669467 - Caterpillar

Image2.1.1
3.2. Remove the bolt and clips which secure the 247-7018 and 247-7019 Hoses.
Image2.2.1
3.3. Remove 135-4557 Bracket with Valve Group Check.
4. Remove 245-3219 Hose for dead engine lower valve from main valve.
5. Remove and discard left side 244-3336 and 250-4262 Lift Hoses as well as all related seals. Discard eight of the 8T-4184 M12 Bolts (45mm long) maintaining left side lift hoses on lift tubes at their lower part. Remove right side lift hoses, store hoses and discard seals.
6. To remove tube assemblies, first remove bolts maintaining the tube on the main valve, then remove clamps at the bracket, and remove brackets. To ease disassembly, we recommend following the sequence 1 to 8 shown below. The valve shown is a 3 functions valve. For 2 functions valve, start the sequence at tube #3.
Image2.3.1
Discard 244-3322 and 244-3323 Left Side Lift Tubes, 255-8482 Bracket and seals. Store right side lift lines (tubes and hoses), right side bracket, half clamps, bolts and washers for tube reassembly.
7. To install the tubes, refer to the following procedure:
- Install tubes, and hand tight bolts on the main valve in the opposite sequence (8 to 1 for a 3 function valve, or 8 to 3 for a 2 function valve).
- Install 277-7123 and 277-7125 Brackets. Use the two upper holes on the frame thread block to install the brackets.
Image2.4.1
Bracket locations are shown below.
Image2.5.1
- Tighten bolts maintaining the bracket on the frame.
- Adjust position of the tube to have around 10 mm between the tube flange and the clamp.
Image2.6.1
This will prevent lift hose interference with the front frame.
- Tighten clamps bolts.
- Tighten bolts at the main valve.
8. Install new 344-8022 and 277-7122 Hoses, using the eight 8T-4194 M12 Bolts (50mm long) between the new lift tubes and the new hoses. Please see images for hoses location.
9. Install 245-3219 Hose for dead engine lower valve on main valve.
10. Install valve group check and bracket on the frame. Connect lines to valve group check.
11. Start the machine and adjust the hydraulic oil level. Check for leaks and interferences while raising and lowering the lift arm.
12. Separate the steering frame lock. Refer to the Disassembly and Assembly Manual, "Steering Frame Lock - Separate and Connect".