CW14 Pneumatic Compactor Propel System Caterpillar

Flushing Valve (Propel Motor) - Test

Usage:

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Table 1
Required Tools
Tool	Part No	Description	Qty
A ⁽¹⁾	198-4234	Digital Indicator (PRESSURE)	1
B ⁽¹⁾	198-4236	Adapter Cable As	2
C ⁽¹⁾	198-4239	Pressure Sensor Gp (0 TO 41,369-KPA (0 TO 6,000-PSI))	1
D ⁽¹⁾	198-4237	Pressure Sensor Gp (0 TO 3,445-KPA (0 TO 500-PSI))	1
E	348-5430	Multi-Tool Gp	1

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^( 1 )

Tool (A), (B), and (C) are part of 198-4240 Digital Pressure Indicator Gp

Standard Machine Configuration

Note: Verify that the charge relief valve is within specification prior to performing this procedure. Refer to Systems Operation, Testing and Adjusting,, " "Relief Valve (Charge) Test and Adjust"".

Drive the machine to a smooth, horizontal surface.

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Illustration 1	g03148936

Move propel lever (1) to the NEUTRAL position.

Move parking brake switch (2) to the ON position.

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Illustration 2	g03148937

Use throttle control switch (3) in order to operate the engine in low idle.

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Illustration 3	g03148938

Move engine start switch (4) to the OFF position.

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Illustration 4	g03148939

Unlock latches (5) and open engine hood (6) .

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Illustration 5	g03148940

Raise support bar (7) and secure the engine hood.

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Illustration 6	g03149696

Loosen set screw (9) on needle valve (8) for the parking brakes.
Note: Needle valve (8) is located in the engine compartment, on the right side of the machine.

Rotate needle valve (8) clockwise in order to close the valve. Tighten set screw (9) .

Assemble the tooling. Connect Tool (B) to Tool (C). Connect other Tool (B) to Tool (D) .

Connect both sets of Tool (B) to Tool (A) .

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Illustration 7	g03162222

Connect Tool (D) to charge pressure tap (10). Connect Tool (C) to forward pressure tap "Ma" (11) on the propel pump.

Move engine start switch (4) to the START position. Release the switch when the engine starts.

Operate the engine at low idle for a few minutes. Use throttle control switch (3) in order to operate the engine at 2250 rpm (high idle).

Monitor the hydraulic oil temperature with Tool (E). Operate the machine until the oil temperature reaches 43 ± 5.6° C (110 ± 10° F).

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Illustration 8	g03162224

Move shift switch (12) to the HIGH position.

Move parking brake switch (2) to the OFF position.

With the machine at high idle, move propel lever (1) forward until the pressure at forward pressure tap (11) reaches 10335 kPa (1500 psi).

Read the pressure at charge pressure tap (10) on Tool (A). Record this pressure as "flushing relief pressure.

Move propel lever (1) back to the NEUTRAL position. Read charge pressure on Tool (A). Record this pressure as "charge pressure".

The pressure differential between flushing relief pressure and charge pressure should be 117 ± 70 kPa (17 ± 10 psi).

Move parking brake switch (2) to the ON position.

Use throttle control switch (3) in order to operate the engine in low idle.

Move engine start switch (4) to the OFF position.

Remove the tooling from charge pressure tap (10) and forward pressure tap "Ma" (11) .

Loosen set screw (9) on needle valve (8) for the parking brake. Rotate needle valve (8) counterclockwise in order to open the valve. Tighten set screw (9) .

Remove and secure support bar (7). Close engine hood (6) .

Machines with Optional Flow Divider

Drive the machine to a smooth, horizontal surface.

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Illustration 9	g03148936

Move propel lever (1) to the NEUTRAL position.

Move parking brake switch (2) to the ON position.

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Illustration 10	g03148937

Use throttle control switch (3) in order to operate the engine in low idle.

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Illustration 11	g03148938

Move engine start switch (4) to the OFF position.

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Illustration 12	g03148939

Unlock latches (5) and open engine hood (6) .

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Illustration 13	g03148940

Raise support bar (7) and secure the engine hood.

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Illustration 14	g03149696

Loosen set screw (9) on needle valve (8) for the parking brakes.
Note: Needle valve (8) is located in the engine compartment, on the right side of the machine.

Rotate needle valve (8) clockwise in order to close the valve. Tighten set screw (9) .

Assemble the tooling. Connect Tool (B) to Tool (C). Make two sets of tooling.

Connect both sets of tooling to Tool (A) .

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Illustration 15	g03149697

Connect one Tool (C) to forward pressure tap "Ma" (11) on the propel pump. Connect other Tool (C) to reverse pressure tap "Mb" (10) on the propel pump.

Move engine start switch (4) to the START position. Release the switch when the engine starts.

Operate the engine at low idle for a few minutes. Use throttle control switch (3) in order to operate the engine at 2250 rpm (high idle).

Monitor the hydraulic oil temperature with Tool (D). Operate the machine until the oil temperature reaches 43 ± 5.6° C (110 ± 10° F).

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Illustration 16	g03151001

Move shift switch (12) to the HIGH position.

Move parking brake switch (2) to the OFF position.

With the machine at high idle, move propel lever (1) forward until the pressure at forward pressure tap (11) reaches 10335 kPa (1500 psi).

Read the pressure at reverse pressure tap (10) on Tool (A). Record this pressure as "flushing relief pressure".

Move propel lever (1) back to the NEUTRAL position. Read reverse pressure on Tool (A). Record this pressure as "charge pressure".

The pressure differential between flushing relief pressure and charge pressure should be 415 ± 207 kPa (60 ± 30 psi).

Move parking brake switch (2) to the ON position.

Use throttle control switch (3) in order to operate the engine in low idle.

Move engine start switch (4) to the OFF position.

Loosen set screw (9) on needle valve (8) for the parking brake. Rotate needle valve (8) counterclockwise in order to open the valve. Tighten set screw (9) .