CB10 Vibratory Asphalt Compactor Propel System Caterpillar

Piston Pump Neutral - Test and Adjust - Split Drum

Usage:

CB10 5B4

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Diesel engine exhaust contains products of combustion which may cause personal injury.

Always start and operate the engine in a well ventilated area, and, if in an enclosed area, vent the exhaust to the outside.

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Personal injury can result from rotating and moving parts. Stay clear of all rotating and moving parts.
Never attempt adjustments while the machine is moving or the engine is running unless otherwise specified.
The machine must be parked on a level surface and the engine stopped.

Attach a "Do Not Operate" or similar warning tag to the start switch and controls before servicing, repairing, or making adjustments to the machine.

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Personal injury or death can result from sudden machine movement.
Sudden movement of the machine can cause injury to persons on or near the machine.

To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.

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Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.

Always use a board or cardboard when checking for a leak.

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Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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Injury to personnel can result if they are not in the operator's view. Allow only essential personnel near the machine, and make sure the personnel are in the operator's view when testing, to prevent injury. Make sure checks are done in an open area.

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Hot parts or hot components can cause burns or personal injury. Do not allow hot parts or components to contact your skin. Use protective clothing or protective equipment to protect your skin.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. 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 in Caterpillar machines. Dispose of all fluids according to local regulations and mandates.

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Table 1
Required Tools
Tool	Part Number	Description	Qty
A⁽¹⁾	198-4234	Digital Indicator	1
B⁽¹⁾	198-4236	Adapter Cable As	2
C⁽¹⁾	198-4239	Pressure Sensor Gp	2
D	110-6349	Fitting As	2
E	6V-9828	Cap As	4
F	6V-9507	Plug	4
F	4J-5477	O-Ring Seal	4
G	177-7860	Hose As	1
G	6V-4143	Quick Connect Coupler	2
H	N/A	Laptop Computer with Plus+1 Software	1
J⁽²⁾	317-7485	Communication Adapter (3)(CA3)	1
K⁽²⁾	457-6114	Cable As (DATA LINK)	1
L⁽²⁾	370-4617	Cable As	1

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⁽¹⁾	Tool (A), Tool (B), and Tool (C) are part of the 198-4240 Digital Pressure Indicator Gp.
⁽²⁾	Tool (J), Tool (K), and Tool (L) are part of 466-6258 Communication Adapter Gp

Note: To perform this test and adjust, the brakes must be disconnected, or the machine must be placed on jack stands.

Drive the machine to a smooth, horizontal surface.
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Illustration 1 g06144094
Move propel lever (1) to the NEUTRAL position.
Move parking brake switch (2) to the ON position.
Place the engine in ECO mode or low idle.
1. Select "Main Menu" (3) on the machine display.
2. Select "Machine Setup" (4).
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3. Select "Engine Spd Sw" (5).
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4. Select "ECO" (6) or "Low" (7).
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Illustration 5 g06144108
Move engine start switch (8) to the OFF position.
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Illustration 6 g06143919
Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
Note: To adjust the neutral on the propel pump, disconnect the brakes or place the machine on jack stands. The weight of the machine is approximately 12160 kg (26808 lb).
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Illustration 7 g06153059

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Disconnect brake supply hose assembly (11) from all four motors. Use Tool (E) to cap the port. Use Tool (F) to plug the hose.
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Mark the electrical connections. Disconnect electrical solenoid connections (12).
Assemble Tool (G).
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Illustration 10 g06155635
Remove the plug from port "M5" (13) on the left side of the pump. Install one Tool (D) in port "M5". Tighten Tool (D) to a torque of 12 N·m (9 lb ft). Connect one end of Tool (G) to Tool (D) in port "M5".
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Illustration 11 g06155637
Remove the plug from port "M4" (14) on the right side of the pump. Install one Tool (D) in port "M4". Tighten Tool (D) to a torque of 12 N·m (9 lb ft). Connect other end of Tool (G) to Tool (D) in port "M4".
Assemble the tooling. Connect Tool (C) to Tool (B). Make two sets of Tool (C) and Tool (B).
Connect both sets of Tool (B) to Tool (A).
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Illustration 12 g06155660

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Illustration 13 g06155664
Connect one Tool (C) to port "Mb" (15) on the top of the front section of the propel pump.
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Illustration 14 g06155669
Connect one Tool (C) to port "Ma" (16) on the bottom of the front section of the propel pump.
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Illustration 15 g06155673
Connect Tool (L) and Tool (K) to Tool (J). Connect Tool (K) to diagnostic connector (17). Connect Tool (L) to USB port on Tool (H).
Move engine start switch (8) to the START position. Release the switch when the engine starts.
Move parking brake switch (2) to the OFF position.
Place the engine in high idle.
Operate the hydraulic system until the oil temperature reaches the test temperature of 45 °C (113 °F).
Place the engine in ECO mode or in low idle.
Move parking brake switch (2) to the OFF position.
Note: First time users need to perform the tasks in the Communication and Connections Wizard. This wizard allows the Windows^® operating system to recognize the USB device. Follow the on-screen instructions.
Launch the Plus+1^TM program on the computer.
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Illustration 16 g06155678
Click "Status" button (18).
Check "Active Codes". Clear any open "Active Codes".
Click "Machine Controls" (19).
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Click "Hydraulics" icon (20).
Click "Piston Pump Neutral Test" (21).
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Illustration 18 g06156175
Click "Piston Pump Neutral Test" icon (22).
Click "Enable" icon (23).
When "Piston Pump Neutral Test" (22) is in "Enabled" mode, thePlus+1^TM program is launched.
Record the differential pressure between port "Ma" and port "Mb" on Tool (A). Differential pressure should be less than 150 kPa (22 psi).
Move parking brake switch (2) to the ON position.
Move engine start switch (8) to the OFF position.
If the differential pressure measured in Step 32 is greater than 150 kPa (22 psi), remove the pump and adjust the mechanical displacement control on a hydraulic test bench. Refer to Disassembly and Assembly, "Piston Pump (Drum Propel)-Remove and Install"". Refer to Bench Test Procedure, REHS3447, "Bench Test Procedure for Hydraulic Piston Pumps". If the differential pressure is less than 150 kPa (22 psi), go to Step 36.
Remove Tool (G) from port "M4" (14) and port "M5" (13). Remove Tool (E) from port "M4" and port "M5". Install plugs in port "M4" and port "M5". Tighten plugs to a torque of 12 N·m (9 lb ft).
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Illustration 19 g06156184
Remove the plug from port "M4" (24) on the right side of the pump. Install one Tool (D) in port "M4". Tighten Tool (D) to a torque of 12 N·m (9 lb ft). Connect one end of Tool (G) to Tool (D) in port "M4".
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Illustration 20 g06156188
Remove the plug from port "M5" (25) on the left side of the pump. Install one Tool (D) in port "M5". Tighten Tool (D) to a torque of 12 N·m (9 lb ft). Connect other end of Tool (G) to Tool (D) in port "M5".
Disconnect Tool (C) from port "Mb" (15) and port "Ma" (16) on the front section of the propel pump.
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Illustration 22 g06156204
Connect one Tool (C) to port "Mc" (26) on the top of the rear section of the propel pump.
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Illustration 23 g06156207
Connect one Tool (C) to port "Md" (27) on the bottom of the rear section of the propel pump.
Move engine start switch (8) to the START position. Release the switch when the engine starts.
Move parking brake switch (2) to the OFF position.
Place the engine in ECO mode or in low idle.
Move parking brake switch (2) to the OFF position.
Launch the Plus+1^TM program on the computer to energize the parking brake.
Record the differential pressure between port "Mc" and port "Md" on Tool (A). Differential pressure should be less than 150 kPa (22 psi).
Move parking brake switch (2) to the ON position.
Move engine start switch (8) to the OFF position.
If the differential pressure measured in Step 47 is greater than 150 kPa (22 psi), remove the pump and adjust the mechanical displacement control on a hydraulic test bench. Refer to Disassembly and Assembly, "Piston Pump (Drum Propel)-Remove and Install"". Refer to Bench Test Procedure,, REHS3447, "Bench Test Procedure for Hydraulic Piston Pumps". If the differential pressure is less than 150 kPa (22 psi), go to Step 51.
Remove the tooling from port "M4" (24) and port "M5" (25). Install plugs in port "M4" and port "M5". Tighten plugs to a torque of 12 N·m (9 lb ft).
Disconnect Tool (C) from port "Mc" (26) and port "Md" (27) on the rear section of the propel pump.
Connect electrical solenoid connections (12).
Exit the Plus+1^TM program. Remove tooling from diagnostic connector (17).
Remove Tool (F) from brake supply hose assembly (11) at the drum propel motors. Remove Tool (E) from the brake inlet port at the drum propel motors. Connect the brake supply hose to the brake inlet ports on the propel motors.
Close the right engine compartment door.