5130B Excavator Hydraulic System Piston Pump (Swing) Caterpillar

Illustration 1	g00836073

Illustration 2	g00836074

The pump is a variable displacement axial piston pump. The rotation of the pump is counterclockwise when the rotation is viewed from the drive end. Use SAE 10W oil at 65°C (149°F) for testing the pump.

Test the pump at the rated speed.

Output ... 464 L/min (123 US gpm)

Pump pressure ... 1000 kPa (145 psi)

Pump speed ... 1915 rpm

Engine speed ... 1750 rpm

(1) Setting for high pressure cutoff adjustment ... 40000 kPa (5800 psi)

(2) Tighten the plug to the following torque. ... 135 ± 15 N·m (100 ± 10 lb ft)

(3) Tighten the bolts for the pump head to the following torque. ... 1000 ± 100 N·m (740 ± 75 lb ft)

(4) Shims are used to adjust the load which is applied by the spring on the barrel assembly. Use the necessary shims in order to attain dimension (C). Dimension (C) is 160.95 + 0.0 - 0.2 mm (6.337 + 0.000 - 0.008 inch). Replace the spring set with a 7.82 + 0.01 - 0.03 mm (0.308 + 0.0004 - 0.0012 inch) gauge in order to measure dimension (C) .

6E-3841 Shim ... 1.2 mm (0.047 inch)

6E-3842 Shim ... 1.0 mm (0.039 inch)

6E-3843 Shim ... 0.8 mm (0.032 inch)

6E-3844 Shim ... 0.6 mm (0.024 inch)

(5) 6E-3869 Spring

Free length ... 111.09 mm (4.374 inch)

Outside diameter ... 33.8 mm (1.331 inch)

(6) Tighten the 4 bolts to the following torque. ... 8.5 ± 2.0 N·m (6.5 ± 1.5 lb ft)

(7) 6E-3872 Spring

Free length ... 77 mm (3.03 inch)

Outside diameter ... 21.1 mm (0.831 inch)

(8) Shims are used to attain proper positioning for the impeller. Use the necessary shims in order to attain dimension (A). Dimension (A) is 22.5 ± 0.1 mm (0.886 ± 0.004 inch).

6E-3334 Shim ... 0.10 mm (0.004 inch)

6E-3335 Shim ... 0.20 mm (0.008 inch)

6E-3336 Shim ... 1.00 mm (0.039 inch)

(9) Shims are used to attain the proper clearance between the pump head assembly and the impeller blades. Check the clearance in three locations at 120 degree intervals. Use the necessary shims in order to attain dimension (B). Dimension (B) is 0.5 mm (0.020 inch).

6E-3334 Shim ... 0.10 mm (0.004 inch)

6E-3335 Shim ... 0.20 mm (0.008 inch)

6E-3336 Shim ... 1.00 mm (0.039 inch)