Procedure to Adjust the Pumps and Motors on Soil Compactors{5058, 5070, 5652} Caterpillar

Procedure to Adjust the Pumps and Motors on Soil Compactors{5058, 5070, 5652}

Usage:

Soil Compactor:: CP-533E (S/N: BZG1-UP; ASM1-UP); CS-533E (S/N: BZE1-UP; DAK1-UP; ASL1-UP)

Introduction

This special instruction is used to update the hydraulic system on the 533E when a replacement pump or a motor is installed on the 533E. This procedure can also be used to improve the cooling performance of the 533E hydraulic system.

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Table 1
Old Pumps and Motors
Part Number	Part Description
218-3160	Piston Pump Gp (Piston pump for the axle)
218-3159	Piston Pump Gp (Piston pump for the drum)
218-8490	Piston Pump Gp (Vibratory piston pump)
218-3164	Piston Motor Gp (Piston motor for the axle)
219-0616	Piston Motor Gp (Piston motor for the drum)

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Table 2
New Pumps and Motors
Part Number	Part Description
296-3329	Piston Pump Gp (Piston pump for the axle)
296-3331	Piston Pump Gp (Piston pump for the drum)
296-3332	Piston Pump Gp (Vibratory piston pump)
296-5160	Piston Motor Gp (Piston motor for the axle)
296-5159	Piston Motor Gp (Piston motor for the drum)

Note: This entire procedure must be completed on all old part numbers. Adjustments have already been completed to the new pumps and motors.

Note: This adjustment procedure may have been performed on some machines in the field.

Adjustment of the Charge Relief Valve for the Axle Propel Pump and Orifice Change

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Table 3
Required Parts
Item	Part Number	Part Description	Qty
1	197-4938	Orifices	2

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Illustration 1	g01295143
(2) Propel pump for the axle

Locate the charge relief valve and remove the charge relief valve from the propel pump for the axle (2). The propel pump for the axle is the first pump on the tandem pump. The propel pump for the axle is located closest to the engine.

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Illustration 2	g01295144
(3) Shim pack (4) Spring (5) Valve

Remove shim pack (3), spring (4), and valve (5) with a magnet.

There are three shims in shim pack (3). Remove the 1 mm (.0394 inch) shim and the 0.3 mm (.0118 inch) shim.

Assemble the remaining shim from shim pack (3), spring (4), and valve (5) .
Note: Not all charge pump relief valves will contain shim packs. No modification to the charge pump relief valve is required on these pumps.

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Illustration 3	g01295138
(6) Orifices

Remove orifices (6). Replace orifices (6) with orifices (1) .

Install the charge relief valve in the propel pump for the axle.

Adjustment of the Charge Relief Valve for the Vibratory Pump and Orifice Change

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Table 4
Required Parts
Item	Part Number	Part Description	Qty
1	239-5723	Orifices	2

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Illustration 4	g01295146
(2) Vibratory charge relief valve

Locate vibratory pump charge relief valve (2). Remove vibratory pump charge relief valve (2). The vibratory pump is the third pump in the stack of three pumps. The vibratory pump is located farthest from the engine.

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Illustration 5	g01295144
(3) Shim pack (4) Spring (5) Valve

Remove shim pack (3), spring (4), and valve (5) with a magnet.

Note: Not all charge pump relief valves will contain shim packs. No modification to the charge pump relief valve is required on these pumps.

Measure the thickness of the shims in shim pack (3). Select the thinnest shim for assembly in the charge pump relief valve.

Install the thinnest shim from shim pack (3), spring (4), and valve (5) .

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Illustration 6	g01295138
(6) Orifices

Remove orifices (6). Replace orifices (6) with orifices (1) .

Install the charge relief valve in the vibratory pump.

Adjust the Stroke Limiters for the Propel Pump

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Illustration 7	g01296119
(1) Plastic caps

Remove four plastic caps (1) from the mechanical stroke limiters.

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Illustration 8	g01296121
(2) Stroke limiter screw (3) Mechanical stroke limiter (4) Jam nut

Insert a wrench in stroke limiter screw (2) on mechanical stroke limiter (3). Loosen jam nut (4) .

Turn stroke limiter screw (2) clockwise until stroke limiter screw (2) makes contact with the servo piston. This will take approximately seven turns.

Mark this position on stroke limiter screw (2) and the pump housing. This mark will be the starting point for the limit adjustment.

Rotate the screw counterclockwise for four and one-half turns. Tighten jam nut (4) .

Repeat Step 2 through Step 5 for the other three stroke limiter screws.

Connect pressure gauges to the propel pump forward and reverse test ports. Refer to Testing and Adjusting, KENR3665 for the proper procedure.

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Illustration 9	g01296265
(5) Linkage rod (6) Manual control levers

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NOTICE

Verify the propel pump control levers are in the neutral position.

Move the propel control handle to the NEUTRAL position. Locate linkage rod (5) that connects manual control levers (6) for the propel pump and remove linkage rod (5) .

Manual control levers (6) for the propel pumps are spring centered to the NEUTRAL position.

Adjust the length of the rod in order to allow linkage rod (5) to drop into the holes of manual control levers (6) .

Install linkage rod (5) .

Move the machine to hard, flat, level ground.

Place the switch for speed control in the LOW SPEED position.

Move the propel control handle to the FULL FORWARD position.

Note the pressure readings on the gauges.

The pressure differential should not be greater than 1380 kPa (200 psi).

If the pressures do not match, adjust the stroke limiter on one of the pumps.

Repeat the process in the FULL REVERSE position.

Remove the gauges from the forward and reverse test ports.

Adjust the Travel Speed for the Axle and Drum Propel Motors

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Illustration 10	g01296274
(1) Minimum displacement adjustment screw

Locate minimum displacement adjustment screw (1) at the bottom of the drum propel motor.

Remove the steel cap from minimum displacement adjustment screw (1) .

Mark a line on the minimum displacement adjustment screw and the propel motor as a reference point.

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Illustration 11	g01296279
(2) Minimum displacement adjustment screw (3) Jam nut (A) 20 mm (.8 inch)

Insert a wrench in minimum displacement adjustment screw (1). Loosen jam nut (2) .

Rotate the minimum displacement adjustment screw (1) counterclockwise for three and one half turns from the original position of minimum displacement adjustment screw (1) .

Tighten jam nut (2) .

The length from the face of jam nut (2) to the end of minimum displacement adjustment screw (1) should be equal to dimension (A) .

Install the steel cap.

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Illustration 12	g01296299
(3) Minimum displacement adjustment screw

Locate minimum displacement adjustment screw (3) on the right side of the axle propel motor.

Remove the steel cap from the minimum displacement adjustment screw.

Mark a line on the minimum displacement adjustment screw and the propel motor as a reference starting point.

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Illustration 13	g01296552
(3) Minimum displacement adjustment screw (4) Jam nut (A) 20 mm (.8 inch)

Insert a wrench in minimum displacement adjustment screw (3). Loosen jam nut (4) .

Turn minimum displacement adjustment screw (3) counterclockwise for three and one half turns from the original position of minimum displacement adjustment screw (3) .

Tighten jam nut (4) .

The length from the face of jam nut (4) to the end of minimum displacement adjustment screw (3) should be equal to dimension (A) .

Install the steel cap.

Move the machine to hard, flat, level ground.

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

Connect pressure gauges to the propel pump forward and reverse test ports. Refer to Testing and Adjusting, KENR3665 for the proper procedure.

Move the propel control handle to the FULL FORWARD position.

Note the pressure readings on the gauges.

The pressure differential should not be greater than 1500 kPa (220 psi).

If the pressures do not match, adjust the minimum displacement adjustment screw on one of the axle motor.

Remove the gauges from the forward and reverse test ports.

Procedure to Test Machine Speed

Note: Top speed of the machine should be 11 km/h (6.8 mph). Working speed should be 6 km/h (3.7 mph).

Mark a 30.5 m (100 ft) speed trap on a flat level surface.

Run the machine in FULL FORWARD speed in WORKING mode through the speed trap.

Run the machine in FULL REVERSE speed in WORKING mode through the speed trap.

Time the machine through the speed trap. Working speed should require 19 seconds ± 1 second to drive through the speed trap in each direction.

If the working speed of the machine varies from this standard, the pump displacement needs to be corrected in both pumps. Refer to ""Adjust the Stroke Limiters for the Propel Pump" ".

Run the machine in FULL FORWARD speed in TRAVEL mode through the speed trap.

Run the machine in FULL REVERSE speed in TRAVEL mode through the speed trap.

Time the machine through the speed trap. Travel speed should require 10 seconds ± 1 second to drive through the speed trap in each direction.

If the travel speed of the machine varies from this standard, the motor displacement needs to be corrected in both motors. Refer to ""Adjust the Travel Speed for the Axle and Drum Propel Motors" ".