TIP-PENETRATION 6Y7409 - Caterpillar

Excavator:
324D (S/N: CJX1-UP)
324D L (S/N: LAB1-UP; T2D1-UP; JJG1-UP; SYM1-UP; DFP1-UP)
324D LN (S/N: EJC1-UP)
324D FM (S/N: JKR1-UP; JLS1-UP)
325D (S/N: KDG1-UP; DBH1-UP)
325D L (S/N: GPB1-UP; KBE1-UP; MCL1-UP; PAL1-UP; AZP1-UP; A3R1-UP; GBR1-UP; SCR1-UP; T2S1-UP; CYW1-UP)
325D LN (S/N: PKE1-UP)
325D MH (S/N: C4H1-UP; RJK1-UP; LWR1-UP)
M325D L MH (S/N: EDF1-UP; KGG1-UP; KAY1-UP)
328D LCR (S/N: GTN1-UP; MKR1-UP)
330D (S/N: EAH1-UP; MEY1-UP)
330D L (S/N: GBC1-UP; NBD1-UP; B6H1-UP; THJ1-UP; FFK1-UP; ERN1-UP; JLP1-UP; MWP1-UP; HAS1-UP; RAS1-UP; EDX1-UP; T2Y1-UP)
330D LN (S/N: GGE1-UP)
Testing and Adjusting, RENR9619, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR7373.Testing and Adjusting, KENR5755, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, KENR5750.Testing and Adjusting, RENR9585, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR7450.Testing and Adjusting, RENR9679, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR9680.Testing and Adjusting, RENR7235, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR7230.Testing and Adjusting, RENR9595, "Relief Valve (Main) - Test and Adjust". This module is part of Service Manual, RENR9590.Testing and Adjusting, RENR7255, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR7250 and Service Manual, RENR9910.Testing and Adjusting, RENR7385, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR7380.Testing and Adjusting, RENR9905, "Relief Valve (Main) - Test and Adjust (Heavy Lift)". This module is part of Service Manual, RENR9900.The procedure to test the main relief valve on machines that are equipped with heavy lift has been corrected. Use the information that follows for the revision of your books. The correct information is also available on SIS.Relief Valve (Main) - Test and Adjust (Heavy Lift)
Position the machine on level ground and stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 1 g01266656
Pump compartment (typical example) (1) Pressure tap (pressure for drive pump) (2) Pressure tap (pressure for idler pump) (3) Pressure tap (power shift pressure)
Attach a 60000 kPa (8700 psi) pressure gauge to pressure tap (1) .
Start the engine.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Illustration 2 g01267081
Set heavy lift switch (A) to the ON setting. Make sure that the indicator light is on.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Raise the boom until the boom cylinder rods are at full extension.
Check the pressure setting of the heavy lift at pressure tap (1) .
Return the joystick for the boom to the NEUTRAL position.
Illustration 3 g01241161
Typical example (4) Main relief valve (5) Locknut for the heavy lift (6) Adjustment screw for the heavy lift (7) Locknut for the main relief valve (8) Adjustment screw for the main relief valve
The heavy lift relief valve pressure setting should be 36000 500 kPa (5220