PUMP GP-MAIN HYDRAULIC 3228732 - Caterpillar

Table 2
"Relief Valve (Main) - Test and Adjust"
Date Machine Serial Number
Machine Settings Engine Speed
HIGH idle
Item Relief Valve Function Stall Specification Actual
Main Relief Valve Pressure P1 Boom, Bucket, Left Travel 19995kPa (2900 psi)
P2 Stick, Right Travel, Auxiliary, Boom Swing
P3 Blade, Telescoping Gauge, Swing 19995kPa (2900 psi)
Pressure Drop Range (10%) P1 Boom, Bucket, Left Travel 19995kPa (2900 psi) to 17995 kPa (2610 psi)
P2 Stick, Right Travel, Auxiliary, Boom Swing
P3 Blade, Telescoping Gauge, Swing 19995kPa (2900 psi) to 17995 kPa (2610 psi)
Table 3
"Relief Valve (Line) - Test and Adjust"
Date
Machine Settings Engine Speed Main Relief Pressure(1)
HIGH idle P1, P2, and P3 19995kPa (2900 psi)
Cylinder Cylinder Position Relief Pressure Setting Actual
Boom Extended 24497 kPa (3553 psi)
Retracted
Stick Extended 24497 kPa (3553 psi)
Retracted
Bucket Extended 24497 kPa (3553 psi)
Retracted
(1) System pressure setting before temporary setting adjustment
Table 4
"Relief Valve - Test and Adjust (Swing)"
Date Machine Serial Number
Machine Settings Engine Speed Main Relief Pressure(1)
HIGH Idle 19995kPa (2900 psi)
Item Specification Actual
Swing Stall Swing Right Cannot be adjusted
Swing Left
(1) System pressure setting before temporary setting adjustmentEngine
Table 5
Engine Specifications
Output 13.4 kW (18 hp) at 2200 rpm
Max. Torque 65.6N m (48.4 lb ft) at 1600 rpm
High Idle
(without load) 2375 25 rpm
Low Idle 1300 25 rpm
Valve Tip Clearance
(intake = outlet) 0.15 mm to 0.25 mm
(0.006inch) to (0.01 inch)
Compression 34.3 1 bar (497 15 psi) at 250 rpm
Engine Oil Pressure
(at specified output) 2.9 bar to 4.4 bar
(42 psi) to (64 psi)
Pressure Switch
(engine oil pump) 0.5 0.1 bar (7.25 1.45 psi)
Thermostat
(open temperature) 80.5° C to 83.5° C
(176.9° F) to (182.3° F)
Thermostat
(fully open temperature) 95° C
(203° F)
Thermal Switch 107° C to 113° C
(225° F) to (235° F)
Firing Order 1 - 3 - 2