T and A

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Testing and Adjusting

CP-533E and CS-533E Vibratory Compactors Propel System

Relief Valve (Main) - Test and Adjust

SMCS - 5070-025-PV ; 5070-081-PV ; 5117-025; 5117-081

Testing and Adjusting the Pressure of the Main Relief Valve

Introduction

This test is designed to determine if the main relief valve is adjusted to the correct pressure setting.

Shutdown SIS

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Product: VIBRATORY COMPACTOR

Model: CS-533E VIBRATORY COMPACTOR ASL

Configuration:CS-533E CP-533E Vibratory Compactor ASL00001-UP (MACHINE) POWERED BY 3054C Engine

Media Number -KENR3665-01 Publication Date -01/10/2006 Date Updated -05/10/2006

i01904887

Sudden movement of the machine or release of oil under pressure can cause serious injury to persons on or near the machine.

To prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic system.

NOTICE

Care must be taken to ensure that fluids are contained during

performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

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Hydraulic test procedures may be performed using either one of the following test equipment:  Digital Pressure Indicator

 Standard tooling

Digital Pressure Indicator

Table 1 provides a list of the required tools if the 198-4240 Digital Pressure Indicator is used to perform the following test procedure.

Standard Tooling

Illustration 1 g00929269

Table 1

Required Tools Digital Pressure Indicator

Tool Item Part Number Description Qty

A

A1 198-4234 Digital Pressure Indicator 1

A2 198-4239 Pressure Sensor

0 - 69000 kPa (0 - 10000 psi) 4

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Table 2 provides a list of the required tools if standard tooling is used to perform the following test procedure.

Table 2

Required Tools (Standard Tooling)

Tool Item Part Number Description Qty

B B1 177-7860 Hose As 4 6V-4143 Coupler 8 B2 8T-0861 Pressure Gauge 0 - 60000 kPa (0 - 8700 psi) 4

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Test Procedure

The 198-4240 Digital Pressure Indicator was used in the following test.

Note: Perform the Relief Valve (Charge) - Test and Adjust before you conduct the Relief Valve

(Main) - Test and Adjust.

Before you conduct the test procedure on the main relief valves, the following steps must be performed:

 Place the propel control lever in NEUTRAL position.

 Place the machine in position against a solid, stationary object such as a loading dock. The

wheels may be blocked and the drum may be blocked instead of placing the machine against a stationary object.

 Make sure that the parking brake is applied.

1. Remove brake line (1). Use Tool (D) to plug the brake line and cap the fitting for the brake line.

D2 6V-9509 Face Seal Plug 1

E

E1 177-7860 Hose As 1

E2 6V-4143 Coupler 2

Final drive planetary

(1) Brake line

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2. Connect two Tools (A2) to pressure test ports (2) and (4) . 3. Connect two Tools (A2) to pressure test ports (7) and (9) .

Location of Propel Pumps

(2) Forward relief valve pressure tap for the axle propel pump

(3) Forward relief valve for the axle propel pump

(4) Forward relief valve pressure tap for the drum propel pump

(5) Forward relief valve for the drum propel pump

(6) Reverse relief valve for the drum propel pump

(7) Reverse relief valve pressure tap for the drum propel pump

(8) Reverse relief valve for the axle propel pump

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4. Loosen the adjusting locknut (10) on the pressure override relief valve. Turn adjuster (11) clockwise for one half of a turn. Tighten the locknut (10) .

5. Release the parking brake.

6. Move the speed selection switch to the HIGH SPEED position.

7. Start the machine and run the engine at high idle at a minimum of 2250 rpm. Check the hydraulic temperature with Tool (C) until the hydraulic oil temperature reaches 38°C (100°F). 8. Move the propel control lever to the full FORWARD position. The pressure at pressure test

port (2) should be 38000 ± 1500 kPa (5512 ± 218 psi) higher than charge pressure.

Cutaway of The Propel Pump

(3) Reverse relief valve

(8) Forward relief valve

(10) Locknut

(11) Adjuster

(12) Relief valve cartridge

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forward main relief valve (3) must be adjusted.

10. If the forward relief valve setting is correct, move the propel control lever to the full

REVERSE position. The pressure at pressure test port (2) and (5) should be 38000 ± 1500 kPa (5512 ± 218 psi) higher than charge pressure.

11. If the relief valve pressure reading on the axle propel pump is not correct, the reverse main relief valve (8) must be adjusted.

Adjusting Procedure

1. If the forward relief valve pressure is not correct, the following steps must be done in order to adjust the main relief valves:

a. Stop the engine.

b. Remove the caps on the forward relief valves.

Relief Valve Cartridge

(12) Relief valve cartridge

(13) Locking setscrew

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e. Use a 5 mm wrench to turn spindle (14). Turn the spindle clockwise in order to increase pressure. Turn the spindle counterclockwise in order to decrease pressure. One full revolution of spindle (14) equals 4400 kPa (638 psi).

f. Tighten locking setscrew (13) .

g. Remove the relief valve cartridge from the vise.

h. Reinstall the relief valve cartridge into relief valve (3). Install the caps on the relief valves. Tighten to the torque specifications.

2. Start the engine.

3. Recheck the pressure at test port (2) . 4. Stop the engine.

5. Readjust the pressure override relief valve back to the original position. To readjust the pressure override relief valve, refer to Testing and Adjusting, "Relief Valve (Pressure Override)".

6. Disconnect Tool (E) from the drum propel pump. Install Tool (E) to the X1 and X2 ports of the axle propel pump. Repeat the test.

7. When you finish the test for the axle propel pump, remove Tool (E) .

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