AIR CONDITIONER GP 4237175 - Caterpillar

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Pump body
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Pump cover (4) Bearing junction (5) Position of bearing joint from the centerline through bearing bores ... 30 15 degrees (6) Face AInstall the bearings so the bearings are even with the outside of the pump body. Also, install the bearings even with "FACE A" of the pump cover.Two-Section Gear
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Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand or damage to parts can be the result.
(A) Body assemblyTest on test stand with SAE 10W oil at 49 °C (120 °F) Rotation from the drive end ... counterclockwise Pump rpm ... 2550 rpm Output ... 193 L/min (51 US gpm) (1) Drive shaft Diameter of the drive shaft (new) ... 20.320 0.005 mm (.8000 .0002 inch) Bore in bearings for drive shaft (new) ... 20.361 0.008 mm (.8016 .0003 inch) (2) Idler shaft Diameter of idler shaft (new) ... 20.320 0.005 mm (.8000 .0002 inch) Bore in bearings for idler shaft (new) ... 20.361 0.008 mm (.8016 .0003 inch) (3) pump gears Length of gears (new) ... 57.158 0.025 mm (2.2503 .0010 inch) Depth of bores for gears ... 57.285 0.020 mm (2.2553 .0008 inch) (B) Body assemblyTest on test stand with SAE 10W oil at 49 °C (120 °F) Rotation from the drive end ... counterclockwise Pump rpm ... 2550 rpmFlow specifications for low pressure Output ... 272 L/min (72 US gpm) Pressure ... 310 kPa (45 psi)Flow specifications for high pressure Output ... 144 L/min (38 US gpm) Pressure ... 560 kPa (81 psi) (4) Drive shaft Diameter of drive shaft (new) ... 22.217 0.005 mm (.8747 .0002 inch) Bore in bearings for drive shaft (new) ... 22.258 0.008 mm (.8763 .0003 inch) (5) Idler shaft Diameter of idler shaft (new) ... 22.217 0.005 mm (.8747 .0002 inch) Bore in bearings for idler shaft (new) ... 22.258 0.008 mm (.8763 .0003 inch) (6) Gears Length of gears (new) ... 79.375 0.025 mm (3.1250 .0010 inch) Depth of bores for gears (new) ... 79.502 0.020 mm (3.1300 .0008 inch) (7) Drive shaft Diameter of drive shaft (new) ... 22.217 0.005 mm (.8747 .0002 inch) Bore in bearings for drive shaft (new) ... 22.258 0.008 mm (.8763 .0003 inch) (8) Idler shaft Diameter of idler shaft (new) ... 22.217 0.005 mm (.8747 .0002 inch) Bore in bearings for idler shaft (new) ... 22.258 0.008 mm (.8763 .0003 inch)
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Oil pressure relief valve (9) 2S-2760 Spring Test force ... 489 24 N (110.0 5.5 lb) Length under test force ... 117.9 mm (4.64 inch) Free length after test ... 152.9 mm (6.02 inch) Outside diameter ... 27 mm (1.063 inch)
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Pump body (10) Bearing installation depth ... 1.52 mm (.060 inch) (11) The position of the bearing joint from the